Megatest

Changes On Branch 5e8db5c53d6af8be
Login

Changes In Branch v2.0001 Through [5e8db5c53d] Excluding Merge-Ins

This is equivalent to a diff from e80ba42389 to 5e8db5c53d

2023-01-24
17:55
Semi-speculative 'fixes' for transient communications problems. check-in: 490ba0207e user: matt tags: v2.0001
14:32
Work and return direct Leaf check-in: 6dacc1f970 user: mrwellan tags: v2.001-direct
08:59
Put changes to ulex-full into ulex check-in: 5e8db5c53d user: matt tags: v2.0001
08:16
Fixed dashboard updater issues. check-in: 51ee5bb785 user: matt tags: v2.0001
2021-12-26
20:14
Attempt to switch from nng to ulex check-in: 6c52169286 user: matt tags: v2.0001
2021-12-23
20:16
get host name automatically in test Leaf check-in: e80ba42389 user: matt tags: v2.001, Uses-nng-nanomsg
19:36
Fixed typo, added a bit to the test check-in: a0652877c1 user: matt tags: v2.001

Modified Makefile from [89e357068d] to [bd818b60a3].

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SHELL=/bin/bash
PREFIX=$(PWD)
CSCOPTS=
INSTALL=install
SRCFILES =

# all : $(PREFIX)/bin/.$(ARCHSTR) mtest dboard mtut ndboard
all : $(PREFIX)/bin/.$(ARCHSTR) mtest
# add dboard mtut and tcmt back later









# module source files
MSRCFILES = autoload.scm dbi.scm ducttape-lib.scm pkts.scm stml2.scm	\
            cookie.scm mutils.scm mtargs.scm apimod.scm			\
            configfmod.scm commonmod.scm dbmod.scm rmtmod.scm		\
            debugprint.scm mtver.scm csv-xml.scm servermod.scm		\
            hostinfo.scm adjutant.scm processmod.scm testsmod.scm	\
            itemsmod.scm keysmod.scm mtmod.scm rmtmod.scm		\
            tasksmod.scm pgdb.scm launchmod.scm runsmod.scm		\
            portloggermod.scm archivemod.scm ezstepsmod.scm		\
            subrunmod.scm bigmod.scm testsmod.scm

# GUISRCF = 

GUIMODFILES = tree.scm dashboard-tests.scm  vgmod.scm \
              dashboard-context-menu.scm dcommon.scm 

# dashboard-guimonitor.scm 

mofiles/dashboard-context-menu.o : mofiles/dcommon.o
mofiles/dashboard-tests.o : mofiles/dcommon.o
# mofiles/dcommon.o mofiles/tree.o : mofiles/gutils.o

OFILES   = $(SRCFILES:%.scm=%.o)
# GOFILES  = $(GUISRCF:%.scm=%.o)

MOFILES = $(addprefix mofiles/,$(MSRCFILES:%.scm=%.o))
GMOFILES = $(addprefix mofiles/,$(GUIMODFILES:%.scm=%.o))

# compiled import files
MOIMPFILES = $(MSRCFILES:%.scm=%.import.o)
GMOIMPFILES = $(GUIMODFILES:%.scm=%.import.o)







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SHELL=/bin/bash
PREFIX=$(PWD)
CSCOPTS=
INSTALL=install
SRCFILES =

# all : $(PREFIX)/bin/.$(ARCHSTR) mtest dboard mtut ndboard
all : $(PREFIX)/bin/.$(ARCHSTR) mtest dboard mtserve
# add dboard mtut and tcmt back later

# Configuration stuff
transport-flavor :
	@echo Creating transport-flavor with full as flavor. Options include: full, simple
	echo full > transport-flavor

ulex.scm dbmgrmod.scm : ulex.scm.template dbmgrmod.scm.template transport-flavor ulex-*/*scm
	./configure

# module source files
MSRCFILES = autoload.scm dbi.scm ducttape-lib.scm pkts.scm stml2.scm	\
            cookie.scm mutils.scm mtargs.scm apimod.scm	ulex.scm	\
            configfmod.scm commonmod.scm dbmod.scm rmtmod.scm		\
            debugprint.scm mtver.scm csv-xml.scm servermod.scm		\
            adjutant.scm processmod.scm testsmod.scm	\
            itemsmod.scm keysmod.scm mtmod.scm rmtmod.scm		\
            tasksmod.scm pgdb.scm launchmod.scm runsmod.scm		\
            portloggermod.scm archivemod.scm ezstepsmod.scm		\
            subrunmod.scm bigmod.scm testsmod.scm dbmgrmod.scm



GUIMODFILES = tree.scm dashboard-tests.scm  vgmod.scm \
              dashboard-context-menu.scm dcommon.scm 



mofiles/dashboard-context-menu.o : mofiles/dcommon.o
mofiles/dashboard-tests.o : mofiles/dcommon.o


OFILES   = $(SRCFILES:%.scm=%.o)


MOFILES = $(addprefix mofiles/,$(MSRCFILES:%.scm=%.o))
GMOFILES = $(addprefix mofiles/,$(GUIMODFILES:%.scm=%.o))

# compiled import files
MOIMPFILES = $(MSRCFILES:%.scm=%.import.o)
GMOIMPFILES = $(GUIMODFILES:%.scm=%.import.o)
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mofiles/bigmod.o : mofiles/configfmod.o
mofiles/bigmod.o : mofiles/dbmod.o
mofiles/bigmod.o : mofiles/rmtmod.o
# mofiles/clientmod.o : mofiles/servermod.oibpq-dev
mofiles/commonmod.o : megatest-fossil-hash.scm
mofiles/commonmod.o : mofiles/configfmod.o
mofiles/commonmod.o : mofiles/debugprint.o
mofiles/commonmod.o : mofiles/hostinfo.o
mofiles/commonmod.o : mofiles/keysmod.o
mofiles/commonmod.o : mofiles/mtargs.o
mofiles/commonmod.o : mofiles/mtver.o
mofiles/commonmod.o : mofiles/processmod.o
mofiles/configfmod.o : mofiles/keysmod.o
mofiles/dbimod.o : mofiles/autoload.o
mofiles/dbmod.o : mofiles/commonmod.o







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mofiles/bigmod.o : mofiles/configfmod.o
mofiles/bigmod.o : mofiles/dbmod.o
mofiles/bigmod.o : mofiles/rmtmod.o
# mofiles/clientmod.o : mofiles/servermod.oibpq-dev
mofiles/commonmod.o : megatest-fossil-hash.scm
mofiles/commonmod.o : mofiles/configfmod.o
mofiles/commonmod.o : mofiles/debugprint.o

mofiles/commonmod.o : mofiles/keysmod.o
mofiles/commonmod.o : mofiles/mtargs.o
mofiles/commonmod.o : mofiles/mtver.o
mofiles/commonmod.o : mofiles/processmod.o
mofiles/configfmod.o : mofiles/keysmod.o
mofiles/dbimod.o : mofiles/autoload.o
mofiles/dbmod.o : mofiles/commonmod.o
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mofiles/launchmod.o : mofiles/bigmod.o
mofiles/launchmod.o : mofiles/ezstepsmod.o
mofiles/launchmod.o : mofiles/rmtmod.o mofiles/servermod.o
mofiles/mtmod.o : mofiles/debugprint.o
mofiles/portloggermod.o : mofiles/tasksmod.o
mofiles/rmtmod.o : mofiles/apimod.o
mofiles/rmtmod.o : mofiles/commonmod.o mofiles/portloggermod.o
mofiles/rmtmod.o : mofiles/itemsmod.o # mofiles/clientmod.o

mofiles/runsmod.o : mofiles/rmtmod.o mofiles/archivemod.o
mofiles/servermod.o : mofiles/commonmod.o
mofiles/stml2.o : mofiles/cookie.o mofiles/dbi.o
mofiles/tasksmod.o : mofiles/pgdb.o mofiles/dbmod.o
mofiles/testsmod.o : mofiles/commonmod.o
mofiles/testsmod.o : mofiles/itemsmod.o mofiles/rmtmod.o mofiles/tasksmod.o




dashboard.o megatest.o : db_records.scm megatest-fossil-hash.scm


ADTLSCR=mt_laststep mt_runstep mt_ezstep
HELPERS=$(addprefix $(PREFIX)/bin/,$(ADTLSCR))
DEPLOYHELPERS=$(addprefix deploytarg/,$(ADTLSCR))
MTESTHASH=$(shell fossil info|grep checkout:| awk '{print $$2}')

ifeq ($(MTESTHASH),)







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mofiles/launchmod.o : mofiles/bigmod.o
mofiles/launchmod.o : mofiles/ezstepsmod.o
mofiles/launchmod.o : mofiles/rmtmod.o mofiles/servermod.o
mofiles/mtmod.o : mofiles/debugprint.o
mofiles/portloggermod.o : mofiles/tasksmod.o
mofiles/rmtmod.o : mofiles/apimod.o
mofiles/rmtmod.o : mofiles/commonmod.o mofiles/portloggermod.o
mofiles/rmtmod.o : mofiles/itemsmod.o mofiles/ulex.o
mofiles/rmtmod.o : mofiles/dbmgrmod.o
mofiles/runsmod.o : mofiles/rmtmod.o mofiles/archivemod.o
mofiles/servermod.o : mofiles/commonmod.o
mofiles/stml2.o : mofiles/cookie.o mofiles/dbi.o
mofiles/tasksmod.o : mofiles/pgdb.o mofiles/dbmod.o
mofiles/testsmod.o : mofiles/commonmod.o
mofiles/testsmod.o : mofiles/itemsmod.o mofiles/rmtmod.o mofiles/tasksmod.o

# split modules. Note: we can switch between ulex and ulex simple.
mofiles/ulex.o : ulex/ulex.scm ulex-simple/ulex.scm

dashboard.o megatest.o : db_records.scm megatest-fossil-hash.scm


ADTLSCR=mt_laststep mt_runstep mt_ezstep
HELPERS=$(addprefix $(PREFIX)/bin/,$(ADTLSCR))
DEPLOYHELPERS=$(addprefix deploytarg/,$(ADTLSCR))
MTESTHASH=$(shell fossil info|grep checkout:| awk '{print $$2}')

ifeq ($(MTESTHASH),)
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ARCHSTR=$(shell if [[ -e /usr/bin/sw_vers ]]; then /usr/bin/sw_vers -productVersion; else lsb_release -sr; fi)
# ARCHSTR=$(shell bash -c "echo \$$MACHTYPE")

PNGFILES = $(shell cd docs/manual;ls *png)

mtest: megatest.scm $(MOFILES) megatest-fossil-hash.scm
	csc $(CSCOPTS) $(MOFILES) megatest.scm -o mtest




#  $(MOIMPFILES) removed

showmtesthash:
	@echo $(MTESTHASH)

dboard : dashboard.scm $(MOFILES) $(GMOFILES) megatest-fossil-hash.scm







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ARCHSTR=$(shell if [[ -e /usr/bin/sw_vers ]]; then /usr/bin/sw_vers -productVersion; else lsb_release -sr; fi)
# ARCHSTR=$(shell bash -c "echo \$$MACHTYPE")

PNGFILES = $(shell cd docs/manual;ls *png)

mtest: megatest.scm $(MOFILES) megatest-fossil-hash.scm
	csc $(CSCOPTS) $(MOFILES) megatest.scm -o mtest

mtserve: mtserve.scm $(MOFILES) megatest-fossil-hash.scm
	csc $(CSCOPTS) $(MOFILES) mtserve.scm -o mtserve

#  $(MOIMPFILES) removed

showmtesthash:
	@echo $(MTESTHASH)

dboard : dashboard.scm $(MOFILES) $(GMOFILES) megatest-fossil-hash.scm
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	csc $(CSCOPTS) -c $< $(MOFILES)

$(PREFIX)/bin/.$(ARCHSTR)/mtest : mtest utils/mk_wrapper
	@echo Installing to PREFIX=$(PREFIX)
	$(INSTALL) mtest $(PREFIX)/bin/.$(ARCHSTR)/mtest
	utils/mk_wrapper $(PREFIX) mtest $(PREFIX)/bin/megatest
	chmod a+x $(PREFIX)/bin/megatest







$(PREFIX)/bin/.$(ARCHSTR)/ndboard : ndboard
	$(INSTALL) ndboard $(PREFIX)/bin/.$(ARCHSTR)/ndboard

$(PREFIX)/bin/newdashboard : $(PREFIX)/bin/.$(ARCHSTR)/ndboard utils/mk_wrapper
	utils/mk_wrapper $(PREFIX) ndboard $(PREFIX)/bin/newdashboard
	chmod a+x $(PREFIX)/bin/newdashboard







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	csc $(CSCOPTS) -c $< $(MOFILES)

$(PREFIX)/bin/.$(ARCHSTR)/mtest : mtest utils/mk_wrapper
	@echo Installing to PREFIX=$(PREFIX)
	$(INSTALL) mtest $(PREFIX)/bin/.$(ARCHSTR)/mtest
	utils/mk_wrapper $(PREFIX) mtest $(PREFIX)/bin/megatest
	chmod a+x $(PREFIX)/bin/megatest

$(PREFIX)/bin/.$(ARCHSTR)/mtserve : mtserve utils/mk_wrapper
	@echo Installing to PREFIX=$(PREFIX)
	$(INSTALL) mtserve $(PREFIX)/bin/.$(ARCHSTR)/mtserve
	utils/mk_wrapper $(PREFIX) mtserve $(PREFIX)/bin/mtserver
	chmod a+x $(PREFIX)/bin/mtserver

$(PREFIX)/bin/.$(ARCHSTR)/ndboard : ndboard
	$(INSTALL) ndboard $(PREFIX)/bin/.$(ARCHSTR)/ndboard

$(PREFIX)/bin/newdashboard : $(PREFIX)/bin/.$(ARCHSTR)/ndboard utils/mk_wrapper
	utils/mk_wrapper $(PREFIX) ndboard $(PREFIX)/bin/newdashboard
	chmod a+x $(PREFIX)/bin/newdashboard
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#          $(PREFIX)/bin/.$(ARCHSTR)/mtexec $(PREFIX)/bin/mtexec $(PREFIX)/bin/serialize-env \
#  $(PREFIX)/bin/viewscreen  $(PREFIX)/bin/mtutil \
#          $(PREFIX)/bin/.$(ARCHSTR)/lib/libpangox-1.0.so \
#          $(PREFIX)/bin/.$(ARCHSTR)/lib/libpangox-1.0.so.0 \
#          $(PREFIX)/bin/.$(ARCHSTR)/lib/libxcb-xlib.so.0
#  $(PREFIX)/bin/tcmt




install : $(PREFIX)/bin/.$(ARCHSTR) $(PREFIX)/bin/.$(ARCHSTR)/mtest $(PREFIX)/bin/megatest \

          $(HELPERS) $(PREFIX)/bin/nbfake \
	  $(PREFIX)/bin/serialize-env \
	  $(PREFIX)/bin/nbfind $(PREFIX)/bin/mtrunner $(PREFIX)/bin/mt_xterm \
	  $(PREFIX)/share/docs/megatest_manual.html $(PREFIX)/bin/remrun \
	  $(PREFIX)/share/db/mt-pg.sql \
          $(PREFIX)/share/js/jquery-3.1.0.slim.min.js \
	  $(PREFIX)/bin/.$(ARCHSTR)/dboard $(PREFIX)/bin/dashboard \







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#          $(PREFIX)/bin/.$(ARCHSTR)/mtexec $(PREFIX)/bin/mtexec $(PREFIX)/bin/serialize-env \
#  $(PREFIX)/bin/viewscreen  $(PREFIX)/bin/mtutil \
#          $(PREFIX)/bin/.$(ARCHSTR)/lib/libpangox-1.0.so \
#          $(PREFIX)/bin/.$(ARCHSTR)/lib/libpangox-1.0.so.0 \
#          $(PREFIX)/bin/.$(ARCHSTR)/lib/libxcb-xlib.so.0
#  $(PREFIX)/bin/tcmt

$(PREFIX)/bin/megatest : $(PREFIX)/bin/.$(ARCHSTR)/mtest
$(PREFIX)/bin/mtserver : $(PREFIX)/bin/.$(ARCHSTR)/mtserve

install : $(PREFIX)/bin/.$(ARCHSTR) $(PREFIX)/bin/.$(ARCHSTR)/mtest \
	  $(PREFIX)/bin/megatest $(PREFIX)/bin/mtserver \
          $(HELPERS) $(PREFIX)/bin/nbfake \
	  $(PREFIX)/bin/serialize-env \
	  $(PREFIX)/bin/nbfind $(PREFIX)/bin/mtrunner $(PREFIX)/bin/mt_xterm \
	  $(PREFIX)/share/docs/megatest_manual.html $(PREFIX)/bin/remrun \
	  $(PREFIX)/share/db/mt-pg.sql \
          $(PREFIX)/share/js/jquery-3.1.0.slim.min.js \
	  $(PREFIX)/bin/.$(ARCHSTR)/dboard $(PREFIX)/bin/dashboard \

Modified TODO from [1f8790aebc] to [8c7ba74ce3].

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#     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

TODO
====

Loose ends
----------




. -list-servers not correct
. move *remotedat* into bigdata
. add back server stats on exit (look in rmt:run in rmtmod.scm)


WW15







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#     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

TODO
====

Loose ends
----------

15:09:29 error in calling find-and-mark-incomplete for run-id 5, exn=#<condition: (exn type)>
         might be related to initial conditions in the db. (no run entry in runs table?).

. -list-servers not correct
. move *remotedat* into bigdata
. add back server stats on exit (look in rmt:run in rmtmod.scm)


WW15

Modified apimod.scm from [f47a08f057] to [e1bfe096ff].

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(module apimod
  (
api:run-server-process
api:start-server
api:dispatch-cmd
api:execute-requests
api:process-request
)
	
(import scheme
	chicken.base
	chicken.process-context.posix
	chicken.string
	chicken.time







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(module apimod
  (
api:run-server-process
api:start-server
api:dispatch-cmd
api:execute-requests
;; api:process-request
)
	
(import scheme
	chicken.base
	chicken.process-context.posix
	chicken.string
	chicken.time
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	 (logd        (conc apath "/logs")) 
	 (logf        (conc logd "/server-launch-";;(current-process-id)
			    (seconds->year-work-week/day-time-fname (current-seconds))
			    "-"cleandbname".log"))
	 (logf2       (conc logd "/server-"
			    (seconds->year-work-week/day-time-fname (current-seconds))
			    "-"cleandbname"-"))
	 (cmd  (conc "nbfake megatest -server - -area "apath
		     " -db "dbname" -autolog "logf2)))

    (if (not (directory-exists? logd))
	(create-directory logd #t))
    (system (conc "NBFAKE_LOG="logf" "cmd))))

;; special function to get server
;; look up in db
;; if found -> return it







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	 (logd        (conc apath "/logs")) 
	 (logf        (conc logd "/server-launch-";;(current-process-id)
			    (seconds->year-work-week/day-time-fname (current-seconds))
			    "-"cleandbname".log"))
	 (logf2       (conc logd "/server-"
			    (seconds->year-work-week/day-time-fname (current-seconds))
			    "-"cleandbname"-"))
	 (cmd  (conc "nbfake mtserver -server - -area "apath" -db "dbname)
		     ;; " -autolog "logf2 ;; the side log did not help. Ended up with two logs and the pid in the name was not that useful.
		     ))
    (if (not (directory-exists? logd))
	(create-directory logd #t))
    (system (conc "NBFAKE_LOG="logf" "cmd))))

;; special function to get server
;; look up in db
;; if found -> return it
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    ((have-incompletes?)            (apply db:have-incompletes? dbstruct params))
    ((login)                        (apply db:login dbstruct params))
    ((general-call)                 (let ((stmtname   (car params))
					  (run-id     (cadr params))
					  (realparams (cddr params)))
				      (db:general-call dbstruct stmtname run-id realparams)))
    ((sdb-qry)                      (apply sdb:qry params))
    ((ping)                         (current-process-id))
    ((get-changed-record-ids)       (apply db:get-changed-record-ids dbstruct params))
    ((get-run-record-ids) 	   (apply db:get-run-record-ids dbstruct params))	
    ;; TESTMETA
    ((testmeta-get-record)       (apply db:testmeta-get-record dbstruct params))

    ;; TASKS 
    ((find-task-queue-records)   (apply tasks:find-task-queue-records dbstruct params))







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    ((have-incompletes?)            (apply db:have-incompletes? dbstruct params))
    ((login)                        (apply db:login dbstruct params))
    ((general-call)                 (let ((stmtname   (car params))
					  (run-id     (cadr params))
					  (realparams (cddr params)))
				      (db:general-call dbstruct stmtname run-id realparams)))
    ((sdb-qry)                      (apply sdb:qry params))
    ((ping)                         `(#t ,(current-process-id) ,(cadr params))) ;; (current-process-id))
    ((get-changed-record-ids)       (apply db:get-changed-record-ids dbstruct params))
    ((get-run-record-ids) 	   (apply db:get-run-record-ids dbstruct params))	
    ;; TESTMETA
    ((testmeta-get-record)       (apply db:testmeta-get-record dbstruct params))

    ;; TASKS 
    ((find-task-queue-records)   (apply tasks:find-task-queue-records dbstruct params))
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;; http-server  send-response
;;                 api:process-request
;;                    db:*
;;
;; NB// Runs on the server as part of the server loop
;;
(define (api:process-request dbstruct indat) ;; the $ is the request vars proc
  (let* ((cmd-in  (alist-ref 'cmd indat)) ;; ($ 'cmd))
	 (cmd     (if (string? cmd-in)(string->symbol cmd-in) cmd-in))
	 (params  (alist-ref 'params indat))
         (key     (alist-ref 'key indat))    ;; TODO - add this back
	 ;; (doprint (apply common:low-noise-print 10 params))
	 )
    ;; (if doprint (debug:print 0 *default-log-port* "cmd: " cmd " with params: " params ", key: " key))







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;; http-server  send-response
;;                 api:process-request
;;                    db:*
;;
;; NB// Runs on the server as part of the server loop
;;
#;(define (api:process-request dbstruct indat) ;; the $ is the request vars proc
  (let* ((cmd-in  (alist-ref 'cmd indat)) ;; ($ 'cmd))
	 (cmd     (if (string? cmd-in)(string->symbol cmd-in) cmd-in))
	 (params  (alist-ref 'params indat))
         (key     (alist-ref 'key indat))    ;; TODO - add this back
	 ;; (doprint (apply common:low-noise-print 10 params))
	 )
    ;; (if doprint (debug:print 0 *default-log-port* "cmd: " cmd " with params: " params ", key: " key))

Added attic/configure version [08e182d3ee].











































































































































































































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#!/bin/bash

#  Copyright 2006-2017, Matthew Welland.
# 
# This file is part of Megatest.
# 
#     Megatest is free software: you can redistribute it and/or modify
#     it under the terms of the GNU General Public License as published by
#     the Free Software Foundation, either version 3 of the License, or
#     (at your option) any later version.
# 
#     Megatest is distributed in the hope that it will be useful,
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#     GNU General Public License for more details.
# 
#     You should have received a copy of the GNU General Public License
#     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

# Configure the build

if [[ "$1"x == "x" ]];then
    PREFIX=$PWD
else
    PREFIX=$1
fi


#======================================================================
# Configure stuff needed for eggs
#======================================================================

function configure_dependencies () {

    #======================================================================
    # libnanomsg
    #======================================================================

    if [[ ! $(ls /usr/lib/*/libnanomsg*) ]];then
	echo "libnanomsg build needed."
	echo "BUILD_NANOMSG=yes" >> makefile.inc
    fi

    #======================================================================
    # postgresql libraries
    #======================================================================

    if [[ ! $(ls /usr/lib/*/libpq.*) ]];then
	echo "Postgresql build needed."
	echo "BUILD_POSTGRES=yes" >> makefile.inc
    fi

    if [[ ! $(ls /usr/lib/*/libsqlite3.*) ]];then
    echo "Sqlite3 build needed."
	echo "BUILD_SQLITE3=yes" >> makefile.inc
    fi

}

#======================================================================
# Initialize makefile.inc
#======================================================================

echo "" > makefile.inc

#======================================================================
# Do we need Chicken?
#======================================================================

if [[ -e /usr/bin/sw_vers ]]; then
    ARCHSTR=$(/usr/bin/sw_vers -productVersion)
else
    ARCHSTR=$(lsb_release -sr)
fi

echo "CHICKEN_PREFIX=$PREFIX/.$ARCHSTR" >> makefile.inc
CHICKEN_PREFIX=$PREFIX/bin/.$ARCHSTR

if [[ ! $(type csi) ]];then
    echo "Chicken build needed."
    echo "BUILD_CHICKEN=yes" >> makefile.inc
    configure_dependencies
    echo "include chicken.makefile" >> makefile.inc
else
    echo "CSIPATH=$(which csi)" >> makefile.inc
    CSIPATH=$(which csi)
    echo "CKPATH=$(dirname $(dirname $CSIPATH))" >> makefile.inc
fi

# Make setup scripts
echo "#!/bin/bash" > setup.sh
echo "export PATH=$CHICKEN_PREFIX/bin:\$PATH" >> setup.sh
echo "export LD_LIBRARY_PATH=$CHICKEN_PREFIX/lib" >> setup.sh
echo 'exec "$@"' >> setup.sh
chmod a+x setup.sh

echo "setenv PATH $CHICKEN_PREFIX/bin:\$PATH" > setup.csh
echo "setenv LD_LIBRARY_PATH $CHICKEN_PREFIX/lib" >> setup.csh

echo "All done creating makefile.inc, feel free to edit it!"
echo "run \"setup.sh bash\" or source setup.csh to get PATH and LD_LIBRARY_PATH adjusted"

Modified build-assist/README from [d108fc0f5b] to [ac3067734e].

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Here is how I like to install chicken for building Megatest.

This guide assumes you have the Megatest fossil and are in the build-assist directory and
that you have the opensrc fossil with uv synced:

fossil clone https://www.kiatoa.com/fossils/megatest
fossil clone https://www.kiatoa.com/fossils/opensrc;cd opensrc;fossil uv sync

Make a build directory and go to it:

mkdir build;cd build

Make a destination directory and set PREFIX

export PREFIX=/opt/chicken/5.3.0; mkdir -p $PREFIX

Get chicken:

wget https://code.call-cc.org/releases/5.3.0/chicken-5.3.0.tar.gz

Extract, build, and install chicken:

tar xf chicken-5.3.0.tar.gz; cd chicken-5.3.0; make PLATFORM=linux PREFIX=$PREFIX install; cd ..

Install all needed eggs.
for egg in $(cat ../ck5-egg.list);do echo $egg;ck5 chicken-install $egg;done

Now run the script ../iup-compile.sh for remaining instructions
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README for IUP





  IUP is a portable toolkit for building graphical user interfaces. It offers a configuration API in three basic languages: C, Lua and LED. IUP's purpose is to allow a program to be executed in different systems without any modification, therefore it is highly portable. Its main advantages are:

    * high performance, due to the fact that it uses native interface elements.

    * fast learning by the user, due to the simplicity of its API.



  Build instructions and usage are available in the IUP documentation.



  For complete information, visit IUP's web site at http://www.tecgraf.puc-rio.br/iup

  or access its documentation in the HTML folder.




(end of README)

Modified build-assist/ck5-eggs.list from [339d250117] to [da39a3ee5e].

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csm
address-info
ansi-escape-sequences
apropos
base64
crypt
csv-abnf
directory-utils
dot-locking
filepath
fmt
format
http-client
itemsmod
json
linenoise
mailbox
md5
message-digest
nanomsg
postgresql
queues
regex
regex-case
rfc3339
s11n
sha1
simple-exceptions
slice
sparse-vectors
spiffy
spiffy-directory-listing
spiffy-request-vars
sql-de-lite
sqlite3
sql-null
srfi-1
srfi-13
srfi-19
sxml-modifications
sxml-serializer
sxml-transforms
system-information
tcp6
test
typed-records
uri-common
z3
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Added build-assist/ck5-full-eggs.list version [3bac908752].



































































































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csm
address-info
ansi-escape-sequences
apropos
base64
breadline
crypt
csv-abnf
directory-utils
dot-locking
filepath
fmt
format
http-client
itemsmod
json
linenoise
mailbox
md5
message-digest
nanomsg
postgresql
queues
regex
regex-case
rfc3339
s11n
sha1
simple-exceptions
slice
sparse-vectors
spiffy
spiffy-directory-listing
spiffy-request-vars
sql-de-lite
sqlite3
sql-null
srfi-1
srfi-13
srfi-19
sxml-modifications
sxml-serializer
sxml-transforms
system-information
tcp6
test
typed-records
uri-common
z3

Modified build-assist/iup-compile.sh from [f2fe37f920] to [8fc93bba73].

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echo " rsync -av include/ $PREFIX/include/"
echo " or (depending on versions and what you see in the iup tars - they seem to vary"
echo "     cp *.a *.so $PREFIX/lib"
echo "     cp include/*.h $PREFIX/include"
echo "  4. run the chicken-install like this:"

echo "If you use a wrapper (e.g. ck5) to create the chicken environment:"
echo "CSC_OPTIONS=\"-I$PREFIX/include -I$PREFIX/include/im -I$PREFIX/include/cd -I$PREFIX/include/iup -L$PREFIX/lib -C -std=gnu99\" ck5 chicken-install iup -feature disable-iup-matrixex"
echo "else:"
echo "CSC_OPTIONS=\"-I$PREFIX/include -I$PREFIX/include/im -I$PREFIX/include/cd -I$PREFIX/include/iup -L$PREFIX/lib -C -std=gnu99\" chicken-install iup"
echo "Then repeat for canvas-draw"

# (export PREFIX=/home/matt/data/buildall/ck5.2;CSC_OPTIONS="-I/home/matt/data/buildall/ck5.2/include -I/home/matt/data/buildall/ck5.2/include/im -I/home/matt/data/buildall/ck5.2/include/cd -I/home/matt/data/buildall/ck5.2/include/iup -L/home/matt/data/buildall/ck5.2/lib -C -std=gnu99" ck5 chicken-install iup -feature disable-iup-matrixex)
 







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echo " rsync -av include/ $PREFIX/include/"
echo " or (depending on versions and what you see in the iup tars - they seem to vary"
echo "     cp *.a *.so $PREFIX/lib"
echo "     cp include/*.h $PREFIX/include"
echo "  4. run the chicken-install like this:"

echo "If you use a wrapper (e.g. ck5) to create the chicken environment:"
echo "CSC_OPTIONS=\"-I$PREFIX/include -I$PREFIX/include/im -I$PREFIX/include/cd -I$PREFIX/include/iup -L$PREFIX/lib -C -std=gnu99\" ck5 chicken-install iup canvas-draw -feature disable-iup-matrixex"
echo "else:"
echo "CSC_OPTIONS=\"-I$PREFIX/include -I$PREFIX/include/im -I$PREFIX/include/cd -I$PREFIX/include/iup -L$PREFIX/lib -C -std=gnu99\" chicken-install iup canvas-draw"


# (export PREFIX=/home/matt/data/buildall/ck5.2;CSC_OPTIONS="-I/home/matt/data/buildall/ck5.2/include -I/home/matt/data/buildall/ck5.2/include/im -I/home/matt/data/buildall/ck5.2/include/cd -I/home/matt/data/buildall/ck5.2/include/iup -L/home/matt/data/buildall/ck5.2/lib -C -std=gnu99" ck5 chicken-install iup -feature disable-iup-matrixex)
 

Modified commonmod.scm from [787a13f0a3] to [143f1164e0].

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(declare (uses mtver))
(declare (uses debugprint))
(declare (uses stml2))
(declare (uses pkts))
(declare (uses processmod))
(declare (uses mtargs))
(declare (uses configfmod))
(declare (uses hostinfo))
(declare (uses keysmod))

;; odd but it works?
;; (declare (uses itemsmod))

(module commonmod
	   (







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(declare (uses mtver))
(declare (uses debugprint))
(declare (uses stml2))
(declare (uses pkts))
(declare (uses processmod))
(declare (uses mtargs))
(declare (uses configfmod))
;; (declare (uses hostinfo))
(declare (uses keysmod))

;; odd but it works?
;; (declare (uses itemsmod))

(module commonmod
	   (
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runs:runrec-mconfig
runs:runrec-runconfig
runs:runrec-serverdat
runs:runrec-transport
runs:runrec-db
runs:runrec-top-path
runs:runrec-run_id

test:get-id
test:get-run_id
test:get-test-name
test:get-state
test:get-status
test:get-item-path
test:test-get-fullname
make-and-init-bigdata
call-with-environment-variables
common:simple-file-lock
common:simple-file-lock-and-wait
common:simple-file-release-lock

common:fail-safe
get-file-descriptor-count
common:get-this-exe-fullpath
common:get-sync-lock-filepath
common:find-local-megatest
common:logpro-exit-code->status-sym
common:worse-status-sym







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runs:runrec-runconfig
runs:runrec-serverdat
runs:runrec-transport
runs:runrec-db
runs:runrec-top-path
runs:runrec-run_id
test:testdat?
test:get-id
test:get-run_id
test:get-test-name
test:get-state
test:get-status
test:get-item-path
test:test-get-fullname
make-and-init-bigdata
call-with-environment-variables
common:simple-file-lock
common:simple-file-lock-and-wait
common:simple-file-release-lock
common:with-simple-file-lock
common:fail-safe
get-file-descriptor-count
common:get-this-exe-fullpath
common:get-sync-lock-filepath
common:find-local-megatest
common:logpro-exit-code->status-sym
common:worse-status-sym
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*task-db*
*db-access-allowed*
*db-access-mutex*
*db-transaction-mutex*
*db-cache-path*
*db-with-db-mutex*
*db-api-call-time*

*no-sync-db*
*my-signature*
*transport-type*
*logged-in-clients*
*server-info*
*server-run*
*run-id*
*server-kind-run*
*home-host*
*heartbeat-mutex*
*api-process-request-count*
*max-api-process-requests*







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*task-db*
*db-access-allowed*
*db-access-mutex*
*db-transaction-mutex*
*db-cache-path*
*db-with-db-mutex*
*db-api-call-time*
*didsomething*
*no-sync-db*
*my-signature*
*transport-type*
*logged-in-clients*

*server-run*
*run-id*
*server-kind-run*
*home-host*
*heartbeat-mutex*
*api-process-request-count*
*max-api-process-requests*
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runs:gendat-inc-results-last-update-set!
runs:gendat-inc-results-fmt-set!
runs:gendat-run-info-set!
runs:gendat-runname-set!
runs:gendat-target-set!

megatest-fossil-hash




)

	
(import scheme
	chicken.base
	chicken.condition
	chicken.file







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runs:gendat-inc-results-fmt-set!
runs:gendat-run-info-set!
runs:gendat-runname-set!
runs:gendat-target-set!

megatest-fossil-hash

rmt:mk-signature
rmt:get-signature

)

	
(import scheme
	chicken.base
	chicken.condition
	chicken.file
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	chicken.io
	chicken.string
	chicken.sort
	chicken.time.posix
	
	(prefix base64 base64:)
	(prefix sqlite3 sqlite3:)


	directory-utils
	matchable
	md5
	message-digest
	regex
	regex-case
	sparse-vectors







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	chicken.io
	chicken.string
	chicken.sort
	chicken.time.posix
	
	(prefix base64 base64:)
	(prefix sqlite3 sqlite3:)

	address-info
	directory-utils
	matchable
	md5
	message-digest
	regex
	regex-case
	sparse-vectors
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	stml2
	pkts
	processmod
	(prefix mtargs args:)
	configfmod
	keysmod
	;; itemsmod
	hostinfo
	)

;;======================================================================
;; CONTENTS
;;
;;  config file utils
;;  misc conversion, data manipulation functions







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	stml2
	pkts
	processmod
	(prefix mtargs args:)
	configfmod
	keysmod
	;; itemsmod
	;; hostinfo
	)

;;======================================================================
;; CONTENTS
;;
;;  config file utils
;;  misc conversion, data manipulation functions
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(define (test:get-id vec)       (vector-ref vec 0))
(define (test:get-run_id vec)   (vector-ref vec 1))
(define (test:get-test-name vec)(vector-ref vec 2))
(define (test:get-state vec)    (vector-ref vec 3))
(define (test:get-status vec)   (vector-ref vec 4))
(define (test:get-item-path vec)(vector-ref vec 5))





(define (test:test-get-fullname test)
   (conc (db:test-get-testname test)
	 (if (equal? (db:test-get-item-path test) "")
	     ""
	     (conc "(" (db:test-get-item-path test) ")"))))

;;======================================================================







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(define (test:get-id vec)       (vector-ref vec 0))
(define (test:get-run_id vec)   (vector-ref vec 1))
(define (test:get-test-name vec)(vector-ref vec 2))
(define (test:get-state vec)    (vector-ref vec 3))
(define (test:get-status vec)   (vector-ref vec 4))
(define (test:get-item-path vec)(vector-ref vec 5))

(define (test:testdat? testdat)
  (and (vector? testdat)
       (>= (vector-length testdat) 6)))

(define (test:test-get-fullname test)
   (conc (db:test-get-testname test)
	 (if (equal? (db:test-get-item-path test) "")
	     ""
	     (conc "(" (db:test-get-item-path test) ")"))))

;;======================================================================
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;; (define *watchdog* #f)
;; A hash table that can be accessed by #{scheme ...} calls in
;; config files. Allows communicating between confgs
;;
(define *user-hash-data* (make-hash-table))

(define *db-keys* #f)


(define *pkts-info*    (make-hash-table)) ;; store stuff like the last parent here
(define *configinfo*   #f)   ;; raw results from setup, includes toppath and table from megatest.config
(define *runconfigdat* #f)   ;; run configs data
(define *configdat*    #f)   ;; megatest.config data ==> moved to configfmod
(define *configstatus* #f)   ;; status of data; 'fulldata : all processing done, #f : no data yet, 'partialdata : partial read done
(define *toppath*      #f)







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;; (define *watchdog* #f)
;; A hash table that can be accessed by #{scheme ...} calls in
;; config files. Allows communicating between confgs
;;
(define *user-hash-data* (make-hash-table))

(define *db-keys* #f)
(define *didsomething* #f)

(define *pkts-info*    (make-hash-table)) ;; store stuff like the last parent here
(define *configinfo*   #f)   ;; raw results from setup, includes toppath and table from megatest.config
(define *runconfigdat* #f)   ;; run configs data
(define *configdat*    #f)   ;; megatest.config data ==> moved to configfmod
(define *configstatus* #f)   ;; status of data; 'fulldata : all processing done, #f : no data yet, 'partialdata : partial read done
(define *toppath*      #f)
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(define *my-signature* #f)
(define *transport-type*    'http)             ;; override with [server] transport http|rpc|nmsg
;; replaced by *rmt:remote*
;; (define *runremote*         #f)                ;; if set up for server communication this will hold <host port>
;; (define *max-cache-size*    0)
(define *logged-in-clients* (make-hash-table))
;; (define *server-id*         #f)
(define *server-info*       #f)  ;; good candidate for easily convert to non-global
;; (define *time-to-exit*      #f)
(define *server-run*        #t)
(define *run-id*            #f)
(define *server-kind-run*   (make-hash-table))
(define *home-host*         #f)
;; (define *total-non-write-delay* 0)
(define *heartbeat-mutex*   (make-mutex))
(define *api-process-request-count* 0)







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(define *my-signature* #f)
(define *transport-type*    'http)             ;; override with [server] transport http|rpc|nmsg
;; replaced by *rmt:remote*
;; (define *runremote*         #f)                ;; if set up for server communication this will hold <host port>
;; (define *max-cache-size*    0)
(define *logged-in-clients* (make-hash-table))
;; (define *server-id*         #f)


(define *server-run*        #t)
(define *run-id*            #f)
(define *server-kind-run*   (make-hash-table))
(define *home-host*         #f)
;; (define *total-non-write-delay* 0)
(define *heartbeat-mutex*   (make-mutex))
(define *api-process-request-count* 0)
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;; (define db:dbfile-path common:get-db-tmp-area)
(define *global-db-store* (make-hash-table))


;;======================================================================
;; end globals
;;======================================================================


















;;                       0           1              2              3
(defstruct launch:einf (pid #t)(exit-status #t)(exit-code #t)(rollup-status 0))

;; copied from egg call-with-environment-variables
;;
(define (call-with-environment-variables variables thunk)







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;; (define db:dbfile-path common:get-db-tmp-area)
(define *global-db-store* (make-hash-table))


;;======================================================================
;; end globals
;;======================================================================

;; Generate a unique signature for this process, used at both client and
;; server side
(define (rmt:mk-signature)
  (message-digest-string (md5-primitive) 
			 (with-output-to-string
			   (lambda ()
			     (write (list (current-directory)
                                          (current-process-id)
					  (argv)))))))

(define (rmt:get-signature) 
  (if *my-signature* *my-signature*
      (let ((sig (rmt:mk-signature)))
        (set! *my-signature* sig)
        *my-signature*)))


;;                       0           1              2              3
(defstruct launch:einf (pid #t)(exit-status #t)(exit-code #t)(rollup-status 0))

;; copied from egg call-with-environment-variables
;;
(define (call-with-environment-variables variables thunk)
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	      #f)))))

(define (common:simple-file-release-lock fname)
  (handle-exceptions
      exn
      #f ;; I don't really care why this failed (at least for now)
    (delete-file* fname)))








;;======================================================================
;; PUlled below from common.scm
;;======================================================================

;; execute thunk, return value.  If exception thrown, trap exception, return #f, and emit nonfatal condition note to *default-log-port* .
;; arguments - thunk, message







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	      #f)))))

(define (common:simple-file-release-lock fname)
  (handle-exceptions
      exn
      #f ;; I don't really care why this failed (at least for now)
    (delete-file* fname)))

(define (common:with-simple-file-lock fname proc)
  (let* ((lkfname (conc fname ".lock")))
    (common:simple-file-lock-and-wait lkfname)
    (let ((res (proc)))
      (common:simple-file-release-lock lkfname)
      res)))

;;======================================================================
;; PUlled below from common.scm
;;======================================================================

;; execute thunk, return value.  If exception thrown, trap exception, return #f, and emit nonfatal condition note to *default-log-port* .
;; arguments - thunk, message
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		      (loop (car tal)(cdr tal) loads proc-num phys-num core-num)))))))))))

(define (common:unix-ping hostname)
  (let ((res (system (conc "ping -c 1 " hostname " > /dev/null"))))
    (eq? res 0)))

(define (launch:is-test-alive host pid)




  (if (and host pid (not (equal? host "n/a")))
      (let* ((cmd (conc "ssh " host " pstree -A " pid))
	     (output (with-input-from-pipe cmd read-lines)))
	(debug:print 2 *default-log-port* "Running " cmd " received " output)
	(if (eq? (length output) 0)
	   #f
	   #t))
      #t))


(define (common:get-num-cpus remote-host)
  (let* ((actual-host (or remote-host (get-host-name))))
    ;; hosts had better not be changing the number of cpus too often!
    (or (hash-table-ref/default *numcpus-cache* actual-host #f)
	(let* ((numcpus (or (common:get-cached-info actual-host "num-cpus" age: (+ 2592000 (pseudo-random-integer 3600)))
			    (let* ((proc   (lambda ()







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		      (loop (car tal)(cdr tal) loads proc-num phys-num core-num)))))))))))

(define (common:unix-ping hostname)
  (let ((res (system (conc "ping -c 1 " hostname " > /dev/null"))))
    (eq? res 0)))

(define (launch:is-test-alive host pid)
  (let* ((same-host (equal? host (get-host-name)))
	 (cmd (conc 
	       (if same-host "" (conc "ssh "host" "))
	       "pstree -A "pid)))
    (if (and host pid
	     (not (equal? host "n/a")))
	(let* ((output (with-input-from-pipe cmd read-lines)))
	  (debug:print 2 *default-log-port* "Running " cmd " received " output)
	  (if (eq? (length output) 0)
	      #f
	      #t))

	#t))) ;; assuming bad query is about a live test is likely not the right thing to do?

(define (common:get-num-cpus remote-host)
  (let* ((actual-host (or remote-host (get-host-name))))
    ;; hosts had better not be changing the number of cpus too often!
    (or (hash-table-ref/default *numcpus-cache* actual-host #f)
	(let* ((numcpus (or (common:get-cached-info actual-host "num-cpus" age: (+ 2592000 (pseudo-random-integer 3600)))
			    (let* ((proc   (lambda ()
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		  d
		  (begin
		    ;; (if (common:low-noise-print 60 "tests:get-tests-search-path" d)
		    ;;	(debug:print 0 *default-log-port* "WARNING: problem with directory " d ", dropping it from tests path"))
		    #f)))
	    (append paths (list (conc *toppath* "/tests"))))))





(define (server:get-best-guess-address hostname)
  (let ((res #f))
    (for-each 
     (lambda (adr)
       (if (not (eq? (u8vector-ref adr 0) 127))
	   (set! res adr)))
     ;; NOTE: This can fail when there is no mention of the host in /etc/hosts. FIXME
     (vector->list (hostinfo-addresses (hostname->hostinfo hostname))))
    (string-intersperse 
     (map number->string
	  (u8vector->list
	   (if res res (hostname->ip hostname)))) ".")))

































(define (tests:readlines filename)
  (call-with-input-file filename
    (lambda (p)
      (let loop ((line (read-line p))
                 (result '()))
        (if (eof-object? line)







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		  d
		  (begin
		    ;; (if (common:low-noise-print 60 "tests:get-tests-search-path" d)
		    ;;	(debug:print 0 *default-log-port* "WARNING: problem with directory " d ", dropping it from tests path"))
		    #f)))
	    (append paths (list (conc *toppath* "/tests"))))))

;;======================================================================
;; network utilities
;;======================================================================

#;(define (server:get-best-guess-address hostname)
  (let ((res #f))
    (for-each 
     (lambda (adr)
       (if (not (eq? (u8vector-ref adr 0) 127))
	   (set! res adr)))
     ;; NOTE: This can fail when there is no mention of the host in /etc/hosts. FIXME
     (vector->list (hostinfo-addresses (hostname->hostinfo hostname))))
    (string-intersperse 
     (map number->string
	  (u8vector->list
	   (if res res (hostname->ip hostname)))) ".")))

;; NOTE: Look at address-info egg as alternative to some of this

(define (rate-ip ipaddr)
  (regex-case ipaddr
    ( "^127\\..*" _ 0 )
    ( "^(10\\.0|192\\.168)\\..*" _ 1 )
    ( else 2 ) ))

;; Change this to bias for addresses with a reasonable broadcast value?
;;
(define (ip-pref-less? a b)
  (> (rate-ip a) (rate-ip b)))

(define (server:get-best-guess-address hostname)
  (let ((all-addresses (get-all-ips hostname)))
    (cond
     ((null? all-addresses)
      hostname #;(get-host-name))                                          ;; no interfaces?
     ((eq? (length all-addresses) 1)
      (car all-addresses))                      ;; only one to choose from, just go with it
     (else
      (car (sort all-addresses ip-pref-less?))))))

(define (get-all-ips-sorted)
  (sort (get-all-ips) ip-pref-less?))

(define (get-all-ips hostname)
  (map address-info-host
       (filter (lambda (x)
		 (equal? (address-info-type x) 'tcp))
	       (address-infos hostname))))

(define (tests:readlines filename)
  (call-with-input-file filename
    (lambda (p)
      (let loop ((line (read-line p))
                 (result '()))
        (if (eof-object? line)

Modified configfmod.scm from [b4853bf0ef] to [0b2cdbe191].

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;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(declare (unit configfmod))
(declare (uses mtargs))


(declare (uses debugprint))
(declare (uses keysmod))

(module configfmod
	(
	 common:get-fields
	 common:nice-path







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;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(declare (unit configfmod))
(declare (uses mtargs))
(declare (uses commonmod))
(declare (uses rmtmod))
(declare (uses debugprint))
(declare (uses keysmod))

(module configfmod
	(
	 common:get-fields
	 common:nice-path
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	 configf:set-section-var
	 configf:var-is?
	 configf:write-alist
	 configf:write-config
	 find-config
	 getenv
	 mytarget

	 nice-path
	 process:cmd-run->list
	 runconfig:read
	 runconfigs-get
	 safe-setenv
	 setenv
	 configf:eval-string-in-environment







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	 configf:set-section-var
	 configf:var-is?
	 configf:write-alist
	 configf:write-config
	 find-config
	 getenv
	 mytarget
	 my-with-lock
	 nice-path
	 process:cmd-run->list
	 runconfig:read
	 runconfigs-get
	 safe-setenv
	 setenv
	 configf:eval-string-in-environment
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	(prefix dbi dbi:)
	(prefix sqlite3 sqlite3:)
	(srfi 18)
	directory-utils
	dot-locking
	format
	matchable

	md5
	message-digest
	regex
	regex-case
	sparse-vectors
	srfi-1
	srfi-13







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	(prefix dbi dbi:)
	(prefix sqlite3 sqlite3:)
	(srfi 18)
	directory-utils
	dot-locking
	format
	matchable
	mtargs
	md5
	message-digest
	regex
	regex-case
	sparse-vectors
	srfi-1
	srfi-13
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;;======================================================================
;; parameters
;;======================================================================

;; while targets are Megatest specific they are a useful concept
(define mytarget (make-parameter #f))




;; locking is optional, many environments don't care (e.g. running on one machine)
;; NOTE: the locker must follow the same syntax as with-dot-lock*


;;
(define my-with-lock (make-parameter with-dot-lock*))

;;======================================================================
;; move debug stuff to separate module then put these back where they belong
;;======================================================================
;;======================================================================
;; lookup routines - replicated from configf
;;======================================================================







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;;======================================================================
;; parameters
;;======================================================================

;; while targets are Megatest specific they are a useful concept
(define mytarget (make-parameter #f))

;; fake locker
(define (fake-locker fname proc)(proc))

;; locking is optional, many environments don't care (e.g. running on one machine)
;; NOTE: the locker must follow the same syntax as with-dot-lock*
;;       with-dot-lock* has problems if /tmp and the file being
;;       locked are not on the same filesystem
;;
(define my-with-lock (make-parameter fake-locker)) ;; with-dot-lock*))

;;======================================================================
;; move debug stuff to separate module then put these back where they belong
;;======================================================================
;;======================================================================
;; lookup routines - replicated from configf
;;======================================================================
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      (let (;; (env-to-use (if env-to-use env-to-use (module-environment 'configfmod)))
	    (inp        (if (string? path)
			    (open-input-file path)
			      path)) ;; we can be handed a port
	    (res        (let ((ht-in (if (not ht)
					 (make-hash-table)
					 ht)))
			  (if (not (configf:lookup ht-in "" "toppath"))
			      (configf:set-section-var ht-in "" "toppath" path))
			  ht-in))
	    (metapath   (if (or (debug:debug-mode 9)
				keep-filenames)
			    path #f))
            (process-wildcards  (lambda (res curr-section-name)
                                  (if (and apply-wildcards
                                           (or (string-contains curr-section-name "%")   ;; wildcard
                                               (string-match "/.*/" curr-section-name))) ;; regex
                                      (begin
                                        (configf:apply-wildcards res curr-section-name)
                                        (hash-table-delete! res curr-section-name))))))  ;; NOTE: if the section is a wild card it will be REMOVED from res 
	(let loop ((inl               (configf:read-line inp res (calc-allow-system allow-system curr-section sections) settings env-to-use)) ;; (read-line inp))
		   (curr-section-name (if curr-section curr-section "default"))
		   (var-flag #f);; turn on for key-var-pr and cont-ln-rx, turn off elsewhere
		   (lead     #f))
	  (debug:print-info 8 *default-log-port* "curr-section-name: " curr-section-name " var-flag: " var-flag "\n   inl: \"" inl "\"")
	  (if (eof-object? inl) 
	      (begin
                ;; process last section for wildcards
                (process-wildcards res curr-section-name)
		(if (string? path) ;; we received a path, not a port, thus we are responsible for closing it.
		    (close-input-port inp))
		(if (list? sections) ;; delete all sections except given when sections is provided
		    (for-each
		     (lambda (section)
		       (if (not (member section sections))
			   (hash-table-delete! res section))) ;; we are using "" as a dumping ground and must remove it before returning the ht
		     (hash-table-keys res)))


		(debug:print 9 *default-log-port* "END: " path)
                res
                ) ;; retval
	      (regex-case 
	       inl 
	       (configf:comment-rx _                  (loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings env-to-use)
                                                            curr-section-name #f #f))







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      (let (;; (env-to-use (if env-to-use env-to-use (module-environment 'configfmod)))
	    (inp        (if (string? path)
			    (open-input-file path)
			      path)) ;; we can be handed a port
	    (res        (let ((ht-in (if (not ht)
					 (make-hash-table)
					 ht)))
			  (if (not (configf:lookup ht-in "toppath" "toppath"))
			        (configf:set-section-var ht-in "toppath" "toppath" (pathname-directory path)))
			  ht-in))
	    (metapath   (if (or (debug:debug-mode 9)
				keep-filenames)
			    path #f))
            (process-wildcards  (lambda (res curr-section-name)
                                  (if (and apply-wildcards
                                           (or (string-contains curr-section-name "%")   ;; wildcard
                                               (string-match "/.*/" curr-section-name))) ;; regex
                                      (begin
                                        (configf:apply-wildcards res curr-section-name)
                                        (hash-table-delete! res curr-section-name))))))  ;; NOTE: if the section is a wild card it will be REMOVED from res 
	(let loop ((inl               (configf:read-line inp res (calc-allow-system allow-system curr-section sections) settings env-to-use)) ;; (read-line inp))
		   (curr-section-name (if curr-section curr-section "default"))
		   (var-flag #f);; turn on for key-var-pr and cont-ln-rx, turn off elsewhere
		   (lead     #f))

	  (if (eof-object? inl) 
	      (begin
                ;; process last section for wildcards
                (process-wildcards res curr-section-name)
		(if (string? path) ;; we received a path, not a port, thus we are responsible for closing it.
		    (close-input-port inp))
		(if (list? sections) ;; delete all sections except given when sections is provided
		    (for-each
		     (lambda (section)
		       (if (not (member section sections))
			   (hash-table-delete! res section))) ;; we are using "" as a dumping ground and must remove it before returning the ht
		     (hash-table-keys res)))


		(debug:print 9 *default-log-port* "END: " path)
                res
                ) ;; retval
	      (regex-case 
	       inl 
	       (configf:comment-rx _                  (loop (configf:read-line inp res (calc-allow-system allow-system curr-section-name sections) settings env-to-use)
                                                            curr-section-name #f #f))
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		      (print var " " val)))
		  section-dat))))) ;;       (print "section-dat: " section-dat))
   (hash-table->alist data)))

(define (runconfig:read fname target environ-patt)
  (let ((ht (make-hash-table)))
    (if target (hash-table-set! ht target '()))
    (configf:read-config fname ht #t environ-patt: environ-patt sections: (if target (list "default" target) #f))))

;;======================================================================
;; Config file handling
;;======================================================================

;; convert to param?

(define configf:std-imports "(import big-chicken configfmod commonmod rmtmod (prefix mtargs args:))")
(define (configf:process-one matchdat l ht allow-system env-to-use linenum)
  (let* ((prestr  (list-ref matchdat 1))
	 (cmdtype (list-ref matchdat 2)) ;; eval, system, shell, getenv
	 (cmd     (list-ref matchdat 3))
	 (quotedcmd (conc "\""cmd"\""))
	 (poststr (list-ref matchdat 4))
	 (result  #f)
	 (start-time (current-seconds))
	 (cmdsym  (string->symbol cmdtype))
	 (fullcmd
	  (if (member cmdsym '(scheme scm))
	      `(eval-needed
		,(conc  "(lambda (ht)"
			configf:std-imports

			cmd ")"))
	      (case cmdsym
		((system)     `(noeval-needed  ,(conc (configf:system ht cmd))))
		;; ((shell sh)   `(noeval-needed  ,(conc (string-translate (shell quotedcmd) "\n" " "))))
		((shell sh)   `(noeval-needed  ,(conc (string-translate (shell cmd) "\n" " "))))
		((realpath rp)`(noeval-needed  ,(conc (common:nice-path quotedcmd))))
		((getenv gv)  `(noeval-needed  ,(conc (get-environment-variable cmd))))
		((mtrah)      `(noeval-needed  ,(configf:lookup ht "" "toppath")))
		((get g)   
		 (match
		  (string-split cmd)
		  ((sect var) `(noeval-needed ,(configf:lookup ht sect var)))
		  (else
		   (debug:print-error 0 *default-log-port* "#{get ...} used with only one parameter, \"" cmd "\", two needed.")
		   '(bad-param ,(conc "#{get ...} used with only one parameter, \"" cmd "\", two needed.")))))
		((runconfigs-get rget) `(noeval-needed ,(runconfigs-get ht quotedcmd))) ;; (conc "(lambda (ht)(runconfigs-get ht \"" cmd "\"))"))

		(else `(#f ,(conc "cmd: " cmd " not recognised")))))))

    (match
     fullcmd
     (('eval-needed newres)







      (handle-exceptions
	 exn
	 (begin
	   (debug:print 0 *default-log-port* "WARNING: failed to process config input \"" l "\", fullcmd="fullcmd", exn=" exn)
	   (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
	   ;; (print "exn=" (condition->list exn))
	   (set! result (conc "#{( " cmdtype ") " cmd "}, full expansion: " fullcmd)))
	 (if (or allow-system
		 (not (member cmdtype '("system" "shell" "sh"))))
	     (with-input-from-string newres
	       (lambda ()
		 (set! result (if env-to-use

				  ((eval (read) env-to-use) ht)
				  ((eval (read)) ht)
				  ))))
	     (set! result (conc "#{(" cmdtype ") "  cmd "}")))))


     (('noeval-needed newres)(set! result newres))

     (else ;; (#f errres)
      (debug:print 0 *default-log-port* "WARNING: failed to process config input \""l"\", fullcmd="fullcmd".")))

    ;; we process as a result
    (let ((delta (- (current-seconds) start-time)))
      (debug:print-info (if (> delta 2) 0 9) *default-log-port* "for line \"" l "\"\n command:  " cmd " took " delta " seconds to run with output:\n   " result))
    (conc prestr result poststr)))
	      
(define (configf:process-line l ht allow-system env-to-use #!key (linenum #f))
  (let loop ((res l))
    (if (string? res)
	(let ((matchdat (string-search configf:var-expand-regex res)))
	  (if matchdat
	      (let ((result (configf:process-one matchdat l ht allow-system env-to-use linenum)))
		(loop result))
	      res))
	  res)))

(define (configf:process-line-old l ht allow-system env-to-use #!key (linenum #f))
  (let loop ((res l))
    (if (string? res)
	(let ((matchdat (string-search configf:var-expand-regex res)))
	  (if matchdat
	      (let* ((prestr  (list-ref matchdat 1))
		     (cmdtype (list-ref matchdat 2)) ;; eval, system, shell, getenv
		     (cmd     (list-ref matchdat 3))
		     (poststr (list-ref matchdat 4))
		     (result  #f)
		     (start-time (current-seconds))
		     (cmdsym  (string->symbol cmdtype))
		     (fullcmd
		      (conc  configf:std-imports
			     "(import chicken.process-context.posix)"
			     "(define setenv set-environment-variable)"
			     (case cmdsym
			       ((scheme scm) (conc "(lambda (ht)" cmd ")"))
			       ((system)     (conc "(lambda (ht)(configf:system ht \"" cmd "\"))"))
			       ((shell sh)   (conc "(lambda (ht)(string-translate (shell \""  cmd "\") \"\n\" \" \"))"))
			       ((realpath rp)(conc "(lambda (ht)(common:nice-path \"" cmd "\"))"))
			       ((getenv gv)  (conc "(lambda (ht)(get-environment-variable \"" cmd "\"))"))
			       ((mtrah)      (conc "(lambda (ht)"







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		      (print var " " val)))
		  section-dat))))) ;;       (print "section-dat: " section-dat))
   (hash-table->alist data)))

(define (runconfig:read fname target environ-patt)
  (let ((ht (make-hash-table)))
    (if target (hash-table-set! ht target '()))
    (configf:read-config fname ht #t environ-patt: environ-patt sections: (if target (list "toppath" "default" target) #f))))

;;======================================================================
;; Config file handling
;;======================================================================

;; convert to param?
(define configf:std-imports "(import scheme big-chicken system-information simple-exceptions big-chicken configfmod commonmod rmtmod testsmod srfi-69 chicken.process-context.posix)(import (prefix mtargs args:))(define getenv get-environment-variable)")

(define (configf:process-one matchdat l ht allow-system env-to-use linenum)
  (let* ((prestr  (list-ref matchdat 1))
	 (cmdtype (list-ref matchdat 2)) ;; eval, system, shell, getenv
	 (cmd     (list-ref matchdat 3))
	 (quotedcmd (conc "\""cmd"\""))
	 (poststr (list-ref matchdat 4))
	 (result  #f)
	 (start-time (current-seconds))
	 (cmdsym  (string->symbol cmdtype))
	 (fullcmd
	  (if (member cmdsym '(scheme scm))
	      `(eval-needed
		,(conc  "(lambda (ht)"
			configf:std-imports
			;; "(set! *toppath* \""(configf:lookup ht "toppath" "toppath")"\")"
			cmd ")"))
	      (case cmdsym
		((system)     `(noeval-needed  ,(conc (configf:system ht cmd))))
		;; ((shell sh)   `(noeval-needed  ,(conc (string-translate (shell quotedcmd) "\n" " "))))
		((shell sh)   `(noeval-needed  ,(conc (string-translate (shell cmd) "\n" " "))))
		((realpath rp)`(noeval-needed  ,(conc (common:nice-path quotedcmd))))
		((getenv gv)  `(noeval-needed  ,(conc (get-environment-variable cmd))))
		((mtrah)      `(noeval-needed  ,(configf:lookup ht "toppath" "toppath")))
		((get g)   
		 (match
		  (string-split cmd)
		  ((sect var) `(noeval-needed ,(configf:lookup ht sect var)))
		  (else
		   (debug:print-error 0 *default-log-port* "#{get ...} used with only one parameter, \"" cmd "\", two needed.")
		   '(bad-param ,(conc "#{get ...} used with only one parameter, \"" cmd "\", two needed.")))))
		;;((runconfigs-get rget) `(noeval-needed ,(runconfigs-get ht quotedcmd))) ;; (conc "(lambda (ht)(runconfigs-get ht \"" cmd "\"))"))
		((runconfigs-get rget) `(noeval-needed ,(runconfigs-get ht cmd))) ;; (conc "(lambda (ht)(runconfigs-get ht \"" cmd "\"))"))
		(else `(#f ,(conc "cmd: " cmd " not recognised")))))))
     
     (match
     fullcmd
     (('eval-needed newres)
	 (if (or allow-system
		 (not (member cmdtype '("system" "shell" "sh"))))
	     (begin
	       ;; (debug:print 0 *default-log-port* "eval: "newres)
	       (with-input-from-string newres
		 (lambda ()
		   (set! result
			 (handle-exceptions
	       		  exn
	       		  (begin
	       		    (debug:print 0 *default-log-port* "WARNING: failed to process config input \"" l "\", eval-needed, newres="newres", exn="(condition->list exn))
	       		    (debug:print 0 *default-log-port* " message1: " ((condition-property-accessor 'exn 'message) exn))

	       		    (set! result (conc "#{( " cmdtype ") " cmd "}, full expansion: " newres)))




			  (if env-to-use
			      ;; ((eval (read) env-to-use) ht) disable until we fix this. 2/10/22 Martin
			      ((eval (read)) ht)
			      ((eval (read)) ht)
			      ))))))
	     (set! result (conc "#{(" cmdtype ") "  cmd "}"))
           )
     )
     (('noeval-needed newres)
        (set! result newres))
     (else ;; (#f errres)
       (debug:print 0 *default-log-port* "WARNING: failed to process config input \""l"\", fullcmd="fullcmd".")))

    ;; we process as a result
    (let ((delta (- (current-seconds) start-time)))
      (debug:print-info (if (> delta 2) 0 9) *default-log-port* "for line \"" l "\"\n command:  " cmd " took " delta " seconds to run with output:\n   " result))
    (conc prestr result poststr)))
	      
(define (configf:process-line l ht allow-system env-to-use #!key (linenum #f))
  (let loop ((res l))
    (if (string? res)
	(let ((matchdat (string-search configf:var-expand-regex res)))
	  (if matchdat
	      (let ((result (configf:process-one matchdat l ht allow-system env-to-use linenum)))
		(loop result))
	      res))
	  res)))

#;(define (configf:process-line-old l ht allow-system env-to-use #!key (linenum #f))
  (let loop ((res l))
    (if (string? res)
	(let ((matchdat (string-search configf:var-expand-regex res)))
	  (if matchdat
	      (let* ((prestr  (list-ref matchdat 1))
		     (cmdtype (list-ref matchdat 2)) ;; eval, system, shell, getenv
		     (cmd     (list-ref matchdat 3))
		     (poststr (list-ref matchdat 4))
		     (result  #f)
		     (start-time (current-seconds))
		     (cmdsym  (string->symbol cmdtype))
		     (fullcmd
		      (conc  configf:std-imports

			     ;;"(define setenv set-environment-variable)"
			     (case cmdsym
			       ((scheme scm) (conc "(lambda (ht)" cmd ")"))
			       ((system)     (conc "(lambda (ht)(configf:system ht \"" cmd "\"))"))
			       ((shell sh)   (conc "(lambda (ht)(string-translate (shell \""  cmd "\") \"\n\" \" \"))"))
			       ((realpath rp)(conc "(lambda (ht)(common:nice-path \"" cmd "\"))"))
			       ((getenv gv)  (conc "(lambda (ht)(get-environment-variable \"" cmd "\"))"))
			       ((mtrah)      (conc "(lambda (ht)"
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			       ;; ((rget)           (conc "(lambda (ht)(runconfigs-get ht \"" cmd "\"))"))
			       (else "(lambda (ht)(print \"ERROR\") \"ERROR\")")))))
		;; (print "fullcmd=" fullcmd)
		(handle-exceptions
		 exn
		 (begin
		   (debug:print 0 *default-log-port* "WARNING: failed to process config input \"" l "\", exn=" exn)
		   (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
		   ;; (print "exn=" (condition->list exn))
		   (set! result (conc "#{( " cmdtype ") " cmd "}, full expansion: " fullcmd)))
		 (if (or allow-system
			 (not (member cmdtype '("system" "shell" "sh"))))
		     (with-input-from-string fullcmd
		       (lambda ()
			 (set! result (if env-to-use







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			       ;; ((rget)           (conc "(lambda (ht)(runconfigs-get ht \"" cmd "\"))"))
			       (else "(lambda (ht)(print \"ERROR\") \"ERROR\")")))))
		;; (print "fullcmd=" fullcmd)
		(handle-exceptions
		 exn
		 (begin
		   (debug:print 0 *default-log-port* "WARNING: failed to process config input \"" l "\", exn=" exn)
		   (debug:print 0 *default-log-port* " message2: " ((condition-property-accessor 'exn 'message) exn))
		   ;; (print "exn=" (condition->list exn))
		   (set! result (conc "#{( " cmdtype ") " cmd "}, full expansion: " fullcmd)))
		 (if (or allow-system
			 (not (member cmdtype '("system" "shell" "sh"))))
		     (with-input-from-string fullcmd
		       (lambda ()
			 (set! result (if env-to-use
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    (configf:alist->config
     (with-input-from-file fname read))))

;;======================================================================
;; DO THE LOCKING AROUND THE CALL
;;======================================================================
;;
(define (configf:write-alist cdat fname)
  ;; (if (not (common:faux-lock fname))
  ;; (debug:print 0 *default-log-port* "INFO: NEED LOCKING ADDED HERE " fname)
  ((my-with-lock)
   fname
   (lambda ()
     (let* ((dat  (configf:config->alist cdat))
            (res
             (begin
               (with-output-to-file fname ;; first write out the file
		 (lambda ()
                   (pp dat)))
               ;; I don't like this. It makes write-alist opaque and complicated. -mrw-


               (if (file-exists? fname)   ;; now verify it is readable
                   (if (configf:read-alist fname)
                       #t ;; data is good.
                       (begin
			 (handle-exceptions
			  exn
			  (begin
			    (debug:print 0 *default-log-port* "deleting " fname " failed, exn=" exn)
			    #f)

			  (debug:print 0 *default-log-port* "WARNING: content " dat " for cache " fname " is not readable. Deleting generated file.")
			  (delete-file fname))
			 #f))

                   #f))))
       res))))
  
(define (common:get-fields cfgdat)
  (let ((fields (hash-table-ref/default cfgdat "fields" '())))
    (map car fields)))

)







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    (configf:alist->config
     (with-input-from-file fname read))))

;;======================================================================
;; DO THE LOCKING AROUND THE CALL
;;======================================================================
;;
(define (configf:write-alist cdat fname #!optional (check-written #f))
  ;; (if (not (common:faux-lock fname))
  ;; (debug:print 0 *default-log-port* "INFO: NEED LOCKING ADDED HERE " fname)
  ((my-with-lock)
   fname
   (lambda ()
     (let* ((dat  (configf:config->alist cdat))
            (res
             (begin
               (with-output-to-file fname ;; first write out the file
		 (lambda ()
                   (pp dat)))
               ;; I don't like this. It makes write-alist complicated
	       ;; move to something like write-and-verify-alist. -mrw-
               (if check-written
		   (if (file-exists? fname)   ;; now verify it is readable
		       (if (configf:read-alist fname)
			   'data-good ;; data is good.

			   (handle-exceptions
			       exn
			       (begin
				 (debug:print 0 *default-log-port* "deleting " fname " failed, exn=" exn)

				 'data-bad)
			     (debug:print 0 *default-log-port* "WARNING: content " dat " for cache " fname " is not readable. Deleting generated file.")
			     (delete-file fname)))

		       'data-not-there)
		   'data-not-checked))))
       res))))
  
(define (common:get-fields cfgdat)
  (let ((fields (hash-table-ref/default cfgdat "fields" '())))
    (map car fields)))

)

Modified configure from [08e182d3ee] to [8c62b68887].

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#     but WITHOUT ANY WARRANTY; without even the implied warranty of
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#     GNU General Public License for more details.
# 
#     You should have received a copy of the GNU General Public License
#     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

# Configure the build

if [[ "$1"x == "x" ]];then
    PREFIX=$PWD
else
    PREFIX=$1
fi


#======================================================================
# Configure stuff needed for eggs
#======================================================================

function configure_dependencies () {

    #======================================================================
    # libnanomsg
    #======================================================================

    if [[ ! $(ls /usr/lib/*/libnanomsg*) ]];then
	echo "libnanomsg build needed."
	echo "BUILD_NANOMSG=yes" >> makefile.inc
    fi

    #======================================================================
    # postgresql libraries
    #======================================================================

    if [[ ! $(ls /usr/lib/*/libpq.*) ]];then
	echo "Postgresql build needed."
	echo "BUILD_POSTGRES=yes" >> makefile.inc
    fi

    if [[ ! $(ls /usr/lib/*/libsqlite3.*) ]];then
    echo "Sqlite3 build needed."
	echo "BUILD_SQLITE3=yes" >> makefile.inc
    fi

}

#======================================================================
# Initialize makefile.inc
#======================================================================

echo "" > makefile.inc

#======================================================================
# Do we need Chicken?
#======================================================================

if [[ -e /usr/bin/sw_vers ]]; then
    ARCHSTR=$(/usr/bin/sw_vers -productVersion)
else
    ARCHSTR=$(lsb_release -sr)
fi

echo "CHICKEN_PREFIX=$PREFIX/.$ARCHSTR" >> makefile.inc
CHICKEN_PREFIX=$PREFIX/bin/.$ARCHSTR

if [[ ! $(type csi) ]];then
    echo "Chicken build needed."
    echo "BUILD_CHICKEN=yes" >> makefile.inc
    configure_dependencies
    echo "include chicken.makefile" >> makefile.inc
else
    echo "CSIPATH=$(which csi)" >> makefile.inc
    CSIPATH=$(which csi)
    echo "CKPATH=$(dirname $(dirname $CSIPATH))" >> makefile.inc
fi

# Make setup scripts
echo "#!/bin/bash" > setup.sh
echo "export PATH=$CHICKEN_PREFIX/bin:\$PATH" >> setup.sh
echo "export LD_LIBRARY_PATH=$CHICKEN_PREFIX/lib" >> setup.sh
echo 'exec "$@"' >> setup.sh
chmod a+x setup.sh

echo "setenv PATH $CHICKEN_PREFIX/bin:\$PATH" > setup.csh
echo "setenv LD_LIBRARY_PATH $CHICKEN_PREFIX/lib" >> setup.csh

echo "All done creating makefile.inc, feel free to edit it!"
echo "run \"setup.sh bash\" or source setup.csh to get PATH and LD_LIBRARY_PATH adjusted"







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#     but WITHOUT ANY WARRANTY; without even the implied warranty of
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#     GNU General Public License for more details.
# 
#     You should have received a copy of the GNU General Public License
#     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.


# Flavors include: simple, full and none






# look at build.config (not a version controlled file and



# create ulex.scm and dbmgr.scm





if [[ -e transport-flavor ]];then




    FLAVOR=$(cat transport-flavor)




























else


    FLAVOR=simple












fi







sed -e "s/FLAVOR/$FLAVOR/" ulex.scm.template > ulex.scm


sed -e "s/FLAVOR/$FLAVOR/" dbmgrmod.scm.template > dbmgrmod.scm


Modified dashboard.scm from [feba132a9c] to [ff9b120b1b].

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	srfi-1
	regex regex-case srfi-69
	typed-records
	sparse-vectors
	format
	srfi-4
	srfi-14

	)

;; (include "common_records.scm")
;; (include "db_records.scm")
;; (include "run_records.scm")
;; (include "task_records.scm")
;; (include "megatest-version.scm")







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	srfi-1
	regex regex-case srfi-69
	typed-records
	sparse-vectors
	format
	srfi-4
	srfi-14
	srfi-18
	)

;; (include "common_records.scm")
;; (include "db_records.scm")
;; (include "run_records.scm")
;; (include "task_records.scm")
;; (include "megatest-version.scm")
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	subrunmod
	tasksmod
	testsmod
	tree
	vgmod
        ducttape-lib
	)





(define help (conc 
	      "Megatest Dashboard, documentation at http://www.kiatoa.com/fossils/megatest
  version " megatest-version "
  license GPL, Copyright (C) Matt Welland 2012-2017

Usage: dashboard [options]







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	subrunmod
	tasksmod
	testsmod
	tree
	vgmod
        ducttape-lib
	)

;; globals to dashboard module
(define *updaters-running* #f)
(define *updaters-thread*  #f)

(define help (conc 
	      "Megatest Dashboard, documentation at http://www.kiatoa.com/fossils/megatest
  version " megatest-version "
  license GPL, Copyright (C) Matt Welland 2012-2017

Usage: dashboard [options]
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			(exit 1))))
		'("MT_RUN_AREA_HOME" "MT_MEGATEST" "MT_CMDINFO" "MT_TEST_RUN_DIR" "MT_LINKTREE" "MT_TESTSUITENAME"))
      (print ". Done. All ok.")))

(if (not (null? remargs))
    (begin
      (print "Unrecognised arguments: " (string-intersperse remargs " "))
      (exit)))

(if (args:get-arg "-h")
    (begin
      (print help)
      (exit)))

(if (args:get-arg "-start-dir")







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			(exit 1))))
		'("MT_RUN_AREA_HOME" "MT_MEGATEST" "MT_CMDINFO" "MT_TEST_RUN_DIR" "MT_LINKTREE" "MT_TESTSUITENAME"))
      (print ". Done. All ok.")))

(if (not (null? remargs))
    (begin
      (print "Unrecognised arguments: " (string-intersperse remargs " "))
      ))

(if (args:get-arg "-h")
    (begin
      (print help)
      (exit)))

(if (args:get-arg "-start-dir")
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;;(debug:print-info 13 *default-log-port* "After common:watchdog spawn")
;; (if (not (args:get-arg "-use-db-cache"))
;;     (begin
;;       (debug:print-info 0 *default-log-port* "Forcing db-cache mode due to read-only access to megatest.db")
;;       (hash-table-set! args:arg-hash "-use-db-cache" #t)));;;)
;;)

;; data common to all tabs goes here
;;
(defstruct dboard:commondat
  ((curr-tab-num 0) : number)
  please-update  
  tabdats
  update-mutex
  updaters 
  updating
  uidat ;; needs to move to tabdat at some time
  hide-not-hide-tabs
  )


(define (dboard:commondat-make)
  (make-dboard:commondat
   curr-tab-num:         0
   tabdats:              (make-hash-table)
   please-update:        #t
   update-mutex:         (make-mutex)
   updaters:             (make-hash-table)
   updating:             #f
   hide-not-hide-tabs:   #f
   ))

;;======================================================================
;; buttons color using image
;;======================================================================

(define *images* (make-hash-table))








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;;(debug:print-info 13 *default-log-port* "After common:watchdog spawn")
;; (if (not (args:get-arg "-use-db-cache"))
;;     (begin
;;       (debug:print-info 0 *default-log-port* "Forcing db-cache mode due to read-only access to megatest.db")
;;       (hash-table-set! args:arg-hash "-use-db-cache" #t)));;;)
;;)

;;;; data common to all tabs goes here
;;;;
;;(defstruct dboard:commondat
;;  ((curr-tab-num 0) : number)
;;  please-update  
;;  tabdats
;;  update-mutex
;;  updaters 
;;  updating
;;  uidat ;; needs to move to tabdat at some time
;;  hide-not-hide-tabs

;;  )
;;
;;(define (dboard:commondat-make)
;;  (make-dboard:commondat
;;   curr-tab-num:         0
;;   tabdats:              (make-hash-table)
;;   please-update:        #t
;;   update-mutex:         (make-mutex)
;;   updaters:             (make-hash-table)
;;   updating:             #f
;;   hide-not-hide-tabs:   #f
;;   ))

;;======================================================================
;; buttons color using image
;;======================================================================

(define *images* (make-hash-table))

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		      (> elapsed-time 2)) ;; stop loading data after 5 seconds, on the next call more data *should* be loaded since get-tests-for-run uses last update
		  (begin
		    (when (> elapsed-time 2)   
                      (debug:print 0 *default-log-port* "NOTE: updates are taking a long time, " elapsed-time "s elapsed.")
                      (let* ((old-val (iup:attribute *tim* "TIME"))
                             (new-val (number->string (inexact->exact (floor (* 2  (string->number old-val)))))))
                        (if (< (string->number new-val) 5000)

                            ((debug:print 0 *default-log-port* "NOTE: increasing poll interval from "old-val" to "new-val)
                            (iup:attribute-set! *tim* "TIME" new-val))))


                      )
		    (dboard:tabdat-allruns-set! tabdat new-res)
		    maxtests)
		  (if (> (dboard:rundat-run-data-offset run-struct) 0)
		      (loop run tal new-res newmaxtests) ;; not done getting data for this run
		      (loop (car tal)(cdr tal) new-res newmaxtests)))))))
    (dboard:tabdat-filters-changed-set! tabdat #f)
    (dboard:update-tree tabdat runs-hash header tb)))







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		      (> elapsed-time 2)) ;; stop loading data after 5 seconds, on the next call more data *should* be loaded since get-tests-for-run uses last update
		  (begin
		    (when (> elapsed-time 2)   
                      (debug:print 0 *default-log-port* "NOTE: updates are taking a long time, " elapsed-time "s elapsed.")
                      (let* ((old-val (iup:attribute *tim* "TIME"))
                             (new-val (number->string (inexact->exact (floor (* 2  (string->number old-val)))))))
                        (if (< (string->number new-val) 5000)
                            (begin
			      (debug:print 0 *default-log-port* "NOTE: increasing poll interval from "old-val" to "new-val)
                              (iup:attribute-set! *tim* "TIME" new-val)))))



		    (dboard:tabdat-allruns-set! tabdat new-res)
		    maxtests)
		  (if (> (dboard:rundat-run-data-offset run-struct) 0)
		      (loop run tal new-res newmaxtests) ;; not done getting data for this run
		      (loop (car tal)(cdr tal) new-res newmaxtests)))))))
    (dboard:tabdat-filters-changed-set! tabdat #f)
    (dboard:update-tree tabdat runs-hash header tb)))
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	 (all-test-names (make-hash-table))
	 (use-bgcolor (equal? (configf:lookup *configdat* "dashboard" "use-bgcolor") "yes")) ;; doesn't work
	 )
    ;; create a concise list of test names
    ;;
    (for-each
     (lambda (rundat)
       (if rundat
	   (let* ((testdats  (dboard:rundat-tests rundat))
		  (testnames (map test:test-get-fullname (hash-table-values testdats))))
	     (dcommon:rundat-copy-tests-to-by-name rundat)
	     ;; for the normalized list of testnames (union of all runs)
	     (if (not (and (dboard:tabdat-hide-empty-runs tabdat)
			   (null? testnames)))
		 (for-each (lambda (testname)







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	 (all-test-names (make-hash-table))
	 (use-bgcolor (equal? (configf:lookup *configdat* "dashboard" "use-bgcolor") "yes")) ;; doesn't work
	 )
    ;; create a concise list of test names
    ;;
    (for-each
     (lambda (rundat)
       (if (dboard:rundat? rundat)
	   (let* ((testdats  (dboard:rundat-tests rundat))
		  (testnames (map test:test-get-fullname (hash-table-values testdats))))
	     (dcommon:rundat-copy-tests-to-by-name rundat)
	     ;; for the normalized list of testnames (union of all runs)
	     (if (not (and (dboard:tabdat-hide-empty-runs tabdat)
			   (null? testnames)))
		 (for-each (lambda (testname)
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	  val
	  (if (not (null? values))
	      (let ((newval (car values)))
		(iup:attribute-set! lb "VALUE" newval)
		newval))))))

(define (dashboard:update-target-selector tabdat #!key (action-proc #f))
  (let* ((runconf-targs (common:get-runconfig-targets *configdat*))
	 (key-lbs       (dboard:tabdat-key-listboxes tabdat))
	 (db-target-dat (rmt:get-targets))
	 (header        (vector-ref db-target-dat 0))
	 (db-targets    (vector-ref db-target-dat 1))
	 (munge-target  (lambda (x)            ;; create a target vector from a string. Pad with na if needed.
			  (list->vector
			   (take (append (string-split x "/")







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	  val
	  (if (not (null? values))
	      (let ((newval (car values)))
		(iup:attribute-set! lb "VALUE" newval)
		newval))))))

(define (dashboard:update-target-selector tabdat #!key (action-proc #f))
  (let* ((runconf-targs (common:get-runconfig-targets *runconfigdat*))
	 (key-lbs       (dboard:tabdat-key-listboxes tabdat))
	 (db-target-dat (rmt:get-targets))
	 (header        (vector-ref db-target-dat 0))
	 (db-targets    (vector-ref db-target-dat 1))
	 (munge-target  (lambda (x)            ;; create a target vector from a string. Pad with na if needed.
			  (list->vector
			   (take (append (string-split x "/")
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	(dboard:tabdat-run-name-set! tabdat curr-runname))
    (dashboard:update-run-command tabdat)))

;; used by run-controls
;;
(define (dashboard:update-tree-selector tabdat #!key (action-proc #f))
  (let* ((tb            (dboard:tabdat-runs-tree tabdat))
	 (runconf-targs (common:get-runconfig-targets *configdat*))
	 (db-target-dat (rmt:get-targets))
         (runs-tree-ht  (dboard:tabdat-runs-tree-ht tabdat))
	 (header        (vector-ref db-target-dat 0))
	 (db-targets    (vector-ref db-target-dat 1))
	 (munge-target  (lambda (x)            ;; create a target vector from a string. Pad with na if needed.
			  (take (append (string-split x "/")
					(make-list (length header) "na"))







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	(dboard:tabdat-run-name-set! tabdat curr-runname))
    (dashboard:update-run-command tabdat)))

;; used by run-controls
;;
(define (dashboard:update-tree-selector tabdat #!key (action-proc #f))
  (let* ((tb            (dboard:tabdat-runs-tree tabdat))
	 (runconf-targs (common:get-runconfig-targets *runconfigdat*))
	 (db-target-dat (rmt:get-targets))
         (runs-tree-ht  (dboard:tabdat-runs-tree-ht tabdat))
	 (header        (vector-ref db-target-dat 0))
	 (db-targets    (vector-ref db-target-dat 1))
	 (munge-target  (lambda (x)            ;; create a target vector from a string. Pad with na if needed.
			  (take (append (string-split x "/")
					(make-list (length header) "na"))
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			 (zeroth-point   (conc "SELECT " timef "," varfn "," valfn " FROM " tablen " WHERE " varfn "='" fieldname "' AND " timef " < " tstart " LIMIT 1")))
		     (hash-table-set! res-ht fieldname ;; (fetch-rows (sql db qrystr)))))
				      (reverse
				       (sqlite3:fold-row
					(lambda (res t var val)
					  (cons (vector t var val) res))
					'() db all-dat-qrystr)))
		     (let ((zeropt (handle-exceptions
				    exn
				    #f
				    (sqlite3:first-row db all-dat-qrystr))))


		       (if zeropt ;; NOTE: Add zeropt to the beginning of the list as the list was reversed above.
			   (hash-table-set! res-ht
					    fieldname
					    (cons
					     (apply vector tstart (cdr zeropt))						    
					     (hash-table-ref/default res-ht fieldname '())))))))
		 fields)







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			 (zeroth-point   (conc "SELECT " timef "," varfn "," valfn " FROM " tablen " WHERE " varfn "='" fieldname "' AND " timef " < " tstart " LIMIT 1")))
		     (hash-table-set! res-ht fieldname ;; (fetch-rows (sql db qrystr)))))
				      (reverse
				       (sqlite3:fold-row
					(lambda (res t var val)
					  (cons (vector t var val) res))
					'() db all-dat-qrystr)))
		     (let ((zeropt (condition-case 


				       (sqlite3:first-row db all-dat-qrystr)
				     (exn (busy)(db:generic-error-printout exn "ERROR: database " dbdef
                                     " is locked. Try copying to another location, remove original and copy back.")))))
		       (if zeropt ;; NOTE: Add zeropt to the beginning of the list as the list was reversed above.
			   (hash-table-set! res-ht
					    fieldname
					    (cons
					     (apply vector tstart (cdr zeropt))						    
					     (hash-table-ref/default res-ht fieldname '())))))))
		 fields)
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				      (begin
					(if (dboard:tabdat-layout-update-ok tabdat)
					    (runloop (car runtal)(cdr runtal) (+ run-num 1) newdoneruns)
					    (escapeloop #t) ;; (dboard:tabdat-layout-update-ok tabdat)
					    ))))))))) ;;  new-run-start-row
		)))
	(debug:print 2 *default-log-port* "no tabdat for run-times-tab-updater"))))

















;; handy trick for printing a record
;;
;;   (pp (dboard:tabdat->alist tabdat))
;; 
;;  removing the tabdat-values proc 
;;
;; (define (tabdat-values tabdat)

;; runs update-rundat using the various filters from the gui
;;
(define (dashboard:do-update-rundat tabdat)
  (dboard:update-rundat
   tabdat
   (hash-table-ref/default (dboard:tabdat-searchpatts tabdat) "runname" "%")
   (dboard:tabdat-numruns tabdat)
   (hash-table-ref/default (dboard:tabdat-searchpatts tabdat) "test-name" "%/%")
   ;; generate key patterns from the target stored in tabdat
   (let* ((dbkeys (dboard:tabdat-dbkeys tabdat)))
     (let ((fres   (if (dboard:tabdat-target tabdat)
                       (let ((ptparts (append (dboard:tabdat-target tabdat)(make-list (length dbkeys) "%"))))
                         (map (lambda (k v)(list k v)) dbkeys ptparts))
                       (let ((res '()))
                         (for-each (lambda (key)
                                     (if (not (equal? key "runname"))
                                         (let ((val (hash-table-ref/default (dboard:tabdat-searchpatts tabdat) key #f)))
                                           (if val (set! res (cons (list key val) res))))))
                                   dbkeys)

                         res))))
       fres))))

(define (dashboard:runs-tab-updater commondat tab-num)
  (debug:catch-and-dump 
   (lambda ()
     (let* ((tabdat (dboard:common-get-tabdat commondat tab-num: tab-num))
	    (dbkeys (dboard:tabdat-dbkeys tabdat)))
       (dashboard:do-update-rundat tabdat)
       (let ((uidat (dboard:commondat-uidat commondat)))
	 (update-buttons tabdat uidat (dboard:tabdat-numruns tabdat) (dboard:tabdat-num-tests tabdat)))
       ))
   "dashboard:runs-tab-updater"))

;;======================================================================
;; The heavy lifting starts here
;;======================================================================

(define (dashboard-main)
  (let ((mtdb-path (conc *toppath* "/megatest.db"))) ;; not used for now, update for .db area and use for write access detection







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				      (begin
					(if (dboard:tabdat-layout-update-ok tabdat)
					    (runloop (car runtal)(cdr runtal) (+ run-num 1) newdoneruns)
					    (escapeloop #t) ;; (dboard:tabdat-layout-update-ok tabdat)
					    ))))))))) ;;  new-run-start-row
		)))
	(debug:print 2 *default-log-port* "no tabdat for run-times-tab-updater"))))

(define (dashboard:calc-key-patterns tabdat)
  ;; generate key patterns from the target stored in tabdat
  (let* ((dbkeys  (dboard:tabdat-dbkeys tabdat)))
    (let ((fres   (if (dboard:tabdat-target tabdat)
		      (let ((ptparts (append (dboard:tabdat-target tabdat)(make-list (length dbkeys) "%"))))
			(map (lambda (k v)(list k v)) dbkeys ptparts))
		      (let ((res '()))
			(for-each (lambda (key)
				    (if (not (equal? key "runname"))
					(let ((val (hash-table-ref/default (dboard:tabdat-searchpatts tabdat) key #f)))
					  (if val (set! res (cons (list key val) res))))))
				  dbkeys)
			res))))
      fres)))


;; handy trick for printing a record
;;
;;   (pp (dboard:tabdat->alist tabdat))
;; 
;;  removing the tabdat-values proc 
;;
;; (define (tabdat-values tabdat)

;; runs update-rundat using the various filters from the gui
;;
(define (dashboard:do-update-rundat tabdat)


  (let* ((runnamepatt (hash-table-ref/default (dboard:tabdat-searchpatts tabdat) "runname" "%"))
	 (numruns     (dboard:tabdat-numruns tabdat))
	 (testnamepatt (hash-table-ref/default (dboard:tabdat-searchpatts tabdat) "test-name" "%/%"))
	 (keypatts     (dashboard:calc-key-patterns tabdat)))
    (dboard:update-rundat
     tabdat




     runnamepatt



     numruns
     testnamepatt
     keypatts)))

(define (dashboard:runs-tab-updater commondat tab-num)
  ;; (debug:catch-and-dump 
  ;;  (lambda ()
     (let* ((tabdat (dboard:common-get-tabdat commondat tab-num: tab-num))
	    (dbkeys (dboard:tabdat-dbkeys tabdat)))
       (dashboard:do-update-rundat tabdat)
       (let ((uidat (dboard:commondat-uidat commondat)))
	 (update-buttons tabdat uidat (dboard:tabdat-numruns tabdat) (dboard:tabdat-num-tests tabdat)))
       ))
   ;; "dashboard:runs-tab-updater"))

;;======================================================================
;; The heavy lifting starts here
;;======================================================================

(define (dashboard-main)
  (let ((mtdb-path (conc *toppath* "/megatest.db"))) ;; not used for now, update for .db area and use for write access detection
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	 tab-num: 1)
        ;; may not want this alive (manually merged it from v1.66)
	(dboard:commondat-add-updater 
	 commondat 
	 (lambda ()
	   (dashboard:runs-tab-updater commondat 1))
	 tab-num: 2)

	(iup:callback-set! *tim*
			   "ACTION_CB"
			   (lambda (time-obj)
			     (let ((update-is-running #f))
			     (mutex-lock! (dboard:commondat-update-mutex commondat))
			     (set! update-is-running (dboard:commondat-updating commondat))
			     (if (not update-is-running)
			     (dboard:commondat-updating-set! commondat #t))
			     (mutex-unlock! (dboard:commondat-update-mutex commondat))
			     (if (not update-is-running) ;; we know that the update was not running and we now have a lock on doing an update
			     (begin




			     (dboard:common-run-curr-updaters commondat) ;; (dashboard:run-update commondat)
			     (mutex-lock! (dboard:commondat-update-mutex commondat))


			     (dboard:commondat-updating-set! commondat #f)






			     (mutex-unlock! (dboard:commondat-update-mutex commondat)))

				   ))
			     1))))
      
      (let ((th1 (make-thread (lambda ()
				(thread-sleep! 1)
				(dboard:common-run-curr-updaters commondat 0) ;; force update of summary tab 
				) "update buttons once"))
	    (th2 (make-thread iup:main-loop "Main loop")))
	(thread-start! th2)
	(thread-join! th2)))))




(define (get-debugcontrolf)
  (let ((debugcontrolf (conc (get-environment-variable "HOME") "/.dashboardrc")))
    (if (common:file-exists? debugcontrolf)
	debugcontrolf
	#f)))








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	 tab-num: 1)
        ;; may not want this alive (manually merged it from v1.66)
	(dboard:commondat-add-updater 
	 commondat 
	 (lambda ()
	   (dashboard:runs-tab-updater commondat 1))
	 tab-num: 2)
	
	(iup:callback-set! *tim*
			   "ACTION_CB"
			   (lambda (time-obj)



			     (if (not *updaters-thread*)



				 (begin
				   ;; (debug:print-info 0 *default-log-port* "Updater started...")
				   (set! *updaters-thread*
					 (make-thread
					  (lambda ()
					    (dboard:common-run-curr-updaters commondat))))
				   (thread-start! *updaters-thread*))
				 (begin
				   (debug:print-info 0 *default-log-port* "Updater restarted...")
				   (thread-resume! *updaters-thread*)))
			     (thread-sleep! 0.25)
			     (if (eq? (thread-state *updaters-thread*) 'running)
				 (begin
				   (debug:print-info 0 *default-log-port* "Updater suspended...")
				   (thread-suspend! *updaters-thread*))
				 (begin
				   (set! *updaters-thread* #f)
				   ;; (debug:print-info 0 *default-log-port* "Updater done...")
				   ))
			     1))))
      
      ;; (let ((th1 (make-thread (lambda ()
      ;; 				(thread-sleep! 1)
      ;; 				(dboard:common-run-curr-updaters commondat 0) ;; force update of summary tab 
      ;; 				) "update buttons once"))
      ;; 	    (th2 (make-thread iup:main-loop "Main loop")))
      ;; 	(thread-start! th2)
      ;; 	(thread-join! th2))
      
      (iup:main-loop)
      )))

(define (get-debugcontrolf)
  (let ((debugcontrolf (conc (get-environment-variable "HOME") "/.dashboardrc")))
    (if (common:file-exists? debugcontrolf)
	debugcontrolf
	#f)))

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(import dashboard)

;; ease debugging by loading ~/.dashboardrc
(let ((debugcontrolf (get-debugcontrolf)))
  (if debugcontrolf
      (load debugcontrolf)))


(main)












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(import dashboard)

;; ease debugging by loading ~/.dashboardrc
(let ((debugcontrolf (get-debugcontrolf)))
  (if debugcontrolf
      (load debugcontrolf)))

(import srfi-18)

(thread-join!
 (thread-start!
  (make-thread main "main")))


Added dbmgrmod.scm.template version [0337085312].











































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;;======================================================================
;; Copyright 2022, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(include "ulex-FLAVOR/dbmgr.scm")

Modified dbmod.scm from [f6dcc2b111] to [edbdd74654].

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;; open or create the disk db file
;; create and fill the inmemory db
;; assemble into dbr:dbdat struct and return
;; 
(define (db:open-dbdat apath dbfile dbinit-proc)
  (let* ((db       (db:open-run-db dbfile dbinit-proc))
	 ;; (inmem    (db:open-inmem-db dbinit-proc))
	 (dbdat    (make-dbr:dbdat
		    db:     #f ;; db
		    inmem:  db ;; inmem
		    ;; run-id: run-id  ;; no can do, there are many run-id values that point to single db
		    fname:  dbfile)))


    ;; now sync the disk file data into the inmemory db
    ;; (db:sync-tables (db:sync-all-tables-list) '("last_update" . 0) db inmem)
    ;; (sqlite3:finalize! db) ;; open and close every sync
    dbdat))
;; (define (db:open-dbdat apath dbfile dbinit-proc)
;;   (let* ((db       (db:open-run-db dbfile dbinit-proc))
;; 	 (inmem    (db:open-inmem-db dbinit-proc))
;; 	 (dbdat    (make-dbr:dbdat
;; 		    db:     #f ;; db
;; 		    inmem:  inmem
;; 		    ;; run-id: run-id  ;; no can do, there are many run-id values that point to single db
;; 		    fname:  dbfile)))
;;     ;; now sync the disk file data into the inmemory db
;;     (db:sync-tables (db:sync-all-tables-list) '("last_update" . 0) db inmem)
;;     (sqlite3:finalize! db) ;; open and close every sync
;;     dbdat))

;; open the disk database file
;; NOTE: May need to add locking to file create process here
;; returns an sqlite3 database handle
;;
(define (db:open-run-db dbfile dbinit-proc)
  (let* ((parent-dir (pathname-directory dbfile)))







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;; open or create the disk db file
;; create and fill the inmemory db
;; assemble into dbr:dbdat struct and return
;; 
(define (db:open-dbdat apath dbfile dbinit-proc)
  (let* ((db       (db:open-run-db dbfile dbinit-proc))
	 (inmem    (db:open-inmem-db dbinit-proc))
	 (dbdat    (make-dbr:dbdat
		    db:     db
		    inmem:  inmem
		    ;; run-id: run-id  ;; no can do, there are many run-id values that point to single db
		    fname:  dbfile)))
    (assert (and (sqlite3:database? db)(sqlite3:database? inmem))
	    "FATAL: should have both inmem and on-disk db at this time.")
    ;; now sync the disk file data into the inmemory db
    (db:sync-tables (db:sync-all-tables-list) '("last_update" . 0) db inmem)
    ;; (sqlite3:finalize! db) ;; open and close every sync
    dbdat))













;; open the disk database file
;; NOTE: May need to add locking to file create process here
;; returns an sqlite3 database handle
;;
(define (db:open-run-db dbfile dbinit-proc)
  (let* ((parent-dir (pathname-directory dbfile)))
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;; called in http-transport and replicated in rmt.scm for *local* access. 
;;
(define (db:setup db-file) ;; run-id)
  (assert *toppath* "FATAL: db:setup called before toppath is available.")
  (let* ((dbstruct (or *dbstruct-db* (make-dbr:dbstruct))))
    (db:get-dbdat dbstruct *toppath* db-file)
    (if (not *dbstruct-db*)(set! *dbstruct-db* dbstruct))

    dbstruct))









;;======================================================================
;; setting/getting a lock on the db for only one server per db
;;
;;  NOTE:
;;       These operate directly on the disk file, NOT on the inmemory db
;;       The lockname is the filename (can have many to one, run-id to fname 







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;; called in http-transport and replicated in rmt.scm for *local* access. 
;;
(define (db:setup db-file) ;; run-id)
  (assert *toppath* "FATAL: db:setup called before toppath is available.")
  (let* ((dbstruct (or *dbstruct-db* (make-dbr:dbstruct))))
    (db:get-dbdat dbstruct *toppath* db-file)
    (if (not *dbstruct-db*)(set! *dbstruct-db* dbstruct))
    (assert (db:check-setup dbstruct *toppath* db-file) "FATAL: db:setup did NOT complete properly")
    dbstruct))

(define (db:check-setup dbstruct apath dbfile)
  (let* ((dbdat       (db:get-dbdat dbstruct apath dbfile))
	 (dbfullname  (conc apath "/" dbfile))
	 (db          (dbr:dbdat-db dbdat)) ;; (db:open-run-db dbfullname db:initialize-db)) ;; 
	 (inmem       (dbr:dbdat-inmem dbdat)))
    (and (sqlite3:database? db)
	 (sqlite3:database? inmem))))

;;======================================================================
;; setting/getting a lock on the db for only one server per db
;;
;;  NOTE:
;;       These operate directly on the disk file, NOT on the inmemory db
;;       The lockname is the filename (can have many to one, run-id to fname 
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;; ;;     (mutex-unlock! *db-multi-sync-mutex*)
;; ;;     (stack-push! (dbr:dbstruct-dbstack dbstruct) tmpdb)))

;; NOTE: touched logic is disabled/not done
;; sync run to disk if touched
;;
(define (db:sync-inmem->disk dbstruct apath dbfile #!key (force-sync #f))
  #f) ;; disabled
;;   (let* ((dbdat       (db:get-dbdat dbstruct apath dbfile))
;; 	 (dbfullname  (conc apath "/" dbfile))
;; 	 (db          (db:open-run-db dbfullname db:initialize-db)) ;; (dbr:dbdat-db dbdat))
;; 	 (inmem       (dbr:dbdat-inmem dbdat))
;; 	 (start-t     (current-seconds))
;; 	 (last-update (dbr:dbdat-last-write dbdat))
;; 	 (last-sync   (dbr:dbdat-last-sync dbdat)))



;;     (debug:print-info 0 *default-log-port* "Syncing for dbfile: "dbfile", last-update: "last-update", last-sync: "last-sync)
;;     (mutex-lock! *db-multi-sync-mutex*)
;;     (let* ((update_info (cons "last_update" (if force-sync 0 last-update))) ;;  "last_update"))
;;     	   (need-sync   (or force-sync (>= last-update last-sync))))
;;       (if need-sync
;; 	  (begin
;; 	    (db:sync-tables (db:sync-all-tables-list) update_info inmem db)
;; 	    (dbr:dbdat-last-sync-set! dbdat start-t))
;; 	  (debug:print 0 *default-log-port* "Skipping sync as nothing touched.")))
;;     (sqlite3:finalize! db)
;;     (mutex-unlock! *db-multi-sync-mutex*)))


;; TODO: Add final sync to this
;;
#;(define (db:safely-close-sqlite3-db db stmt-cache #!key (try-num 3))
  (if (<= try-num 0)
      #f
      (handle-exceptions
	  exn
	(begin
	  (print "Attempt to safely close sqlite3 db failed. Trying again. exn=" exn)
	  (thread-sleep! 3)
	  (sqlite3:interrupt! db)
	  (db:safely-close-sqlite3-db db stmt-cache try-num: (- try-num 1)))
	(if (sqlite3:database? db)
	    (let* ((stmts (and stmt-cache (hash-table-ref/default stmt-cache db #f))))
	      (if stmts (map sqlite3:finalize! (hash-table-values stmts)))
	      (sqlite3:finalize! db)
	      #t)
	    #f))))

;; close all opened run-id dbs
#;(define (db:close-all dbstruct)
  (assert (dbr:dbstruct? dbstruct) "FATAL: db:close-all called with dbstruct not set up.")
  (handle-exceptions
   exn
   (begin
     (debug:print 0 *default-log-port* "WARNING: Finalizing failed, "  ((condition-property-accessor 'exn 'message) exn) ", note - exn=" exn)
     (print-call-chain *default-log-port*))
   ;; (db:sync-touched dbstruct 0 force-sync: #t) ;; NO. Do not do this here. Instead we rely on a server to be started when there are writes, even if the server itself is not going to be used as a server.







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;; ;;     (mutex-unlock! *db-multi-sync-mutex*)
;; ;;     (stack-push! (dbr:dbstruct-dbstack dbstruct) tmpdb)))

;; NOTE: touched logic is disabled/not done
;; sync run to disk if touched
;;
(define (db:sync-inmem->disk dbstruct apath dbfile #!key (force-sync #f))

  (let* ((dbdat       (db:get-dbdat dbstruct apath dbfile))
	 (dbfullname  (conc apath "/" dbfile))
	 (db          (dbr:dbdat-db dbdat)) ;; (db:open-run-db dbfullname db:initialize-db)) ;; 
	 (inmem       (dbr:dbdat-inmem dbdat))
	 (start-t     (current-seconds))
	 (last-update (dbr:dbdat-last-write dbdat))
	 (last-sync   (dbr:dbdat-last-sync dbdat)))
    (if (and (sqlite3:database? db)
	     (sqlite3:database? inmem))
	(begin
	  (debug:print-info 0 *default-log-port* "Syncing for dbfile: "dbfile", last-update: "last-update", last-sync: "last-sync)
	  (mutex-lock! *db-multi-sync-mutex*)
	  (let* ((update_info (cons "last_update" (if force-sync 0 last-update))) ;;  "last_update"))
   		 (need-sync   (or force-sync (>= last-update last-sync))))
	    (if need-sync
		(begin
		  (db:sync-tables (db:sync-all-tables-list) update_info inmem db)
		  (dbr:dbdat-last-sync-set! dbdat start-t))
		(debug:print 0 *default-log-port* "Skipping sync as nothing touched.")))
	  ;; (sqlite3:finalize! db)
	  (mutex-unlock! *db-multi-sync-mutex*))
	(debug:print-info 0 *default-log-port* "Skipping sync due to databases not being open."))))
    
;; TODO: Add final sync to this
;;
(define (db:safely-close-sqlite3-db db stmt-cache #!key (try-num 3))
  (if (<= try-num 0)
      #f
      (handle-exceptions
	  exn
	(begin
	  (print "Attempt to safely close sqlite3 db failed. Trying again. exn=" exn)
	  (thread-sleep! 3)
	  (sqlite3:interrupt! db)
	  (db:safely-close-sqlite3-db db stmt-cache try-num: (- try-num 1)))
	(if (sqlite3:database? db)
	    (let* ((stmts (and stmt-cache (hash-table-ref/default stmt-cache db #f))))
	      (if stmts (map sqlite3:finalize! (hash-table-values stmts)))
	      (sqlite3:finalize! db)
	      #t)
	    #f))))

;; close all opened run-id dbs
(define (db:close-all dbstruct)
  (assert (dbr:dbstruct? dbstruct) "FATAL: db:close-all called with dbstruct not set up.")
  (handle-exceptions
   exn
   (begin
     (debug:print 0 *default-log-port* "WARNING: Finalizing failed, "  ((condition-property-accessor 'exn 'message) exn) ", note - exn=" exn)
     (print-call-chain *default-log-port*))
   ;; (db:sync-touched dbstruct 0 force-sync: #t) ;; NO. Do not do this here. Instead we rely on a server to be started when there are writes, even if the server itself is not going to be used as a server.
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	(all-stmts   '())              ;; ( ( stmt1 value1 ) ( stml2 value2 ))
	(numrecs     (make-hash-table))
	(start-time  (current-milliseconds))
	(tot-count   0))

    (for-each ;; table
     (lambda (tabledat)

       (db:sync-one-table fromdb todb tabledat last-update numrecs))



     tbls)

    (let* ((runtime      (- (current-milliseconds) start-time))
	   (should-print (or (debug:debug-mode 12)
			     (common:low-noise-print 120 "db sync" (> runtime 500))))) ;; low and high sync times treated as separate.
      (if should-print (debug:print 3 *default-log-port* "INFO: db sync, total run time " runtime " ms"))
      (for-each 







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	(all-stmts   '())              ;; ( ( stmt1 value1 ) ( stml2 value2 ))
	(numrecs     (make-hash-table))
	(start-time  (current-milliseconds))
	(tot-count   0))

    (for-each ;; table
     (lambda (tabledat)
       (condition-case
	   (db:sync-one-table fromdb todb tabledat last-update numrecs)
	 ;; if db is busy, take a break and try one more time
	 (exn (busy)(thread-sleep! 0.5)
	      (db:sync-one-table fromdb todb tabledat last-update numrecs))))
     tbls)

    (let* ((runtime      (- (current-milliseconds) start-time))
	   (should-print (or (debug:debug-mode 12)
			     (common:low-noise-print 120 "db sync" (> runtime 500))))) ;; low and high sync times treated as separate.
      (if should-print (debug:print 3 *default-log-port* "INFO: db sync, total run time " runtime " ms"))
      (for-each 
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                              id           INTEGER PRIMARY KEY,
                              test_id      INTEGER,
                              state        TEXT DEFAULT 'new',
                              status       TEXT DEFAULT 'n/a',
                              archive_type TEXT DEFAULT 'bup',
                              du           INTEGER,
                              archive_path TEXT);")))
         (print "creating triggers from init") 
        (db:create-triggers db)    
     db)) ;; )

;;======================================================================
;; A R C H I V E S
;;======================================================================

;; dneeded is minimum space needed, scan for existing archives that 
;; are on disks with adequate space and already have this test/itempath







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                              id           INTEGER PRIMARY KEY,
                              test_id      INTEGER,
                              state        TEXT DEFAULT 'new',
                              status       TEXT DEFAULT 'n/a',
                              archive_type TEXT DEFAULT 'bup',
                              du           INTEGER,
                              archive_path TEXT);")))
    (debug:print 0 *default-log-port* "creating triggers from init")
    (db:create-triggers db)    
    db)) ;; )

;;======================================================================
;; A R C H I V E S
;;======================================================================

;; dneeded is minimum space needed, scan for existing archives that 
;; are on disks with adequate space and already have this test/itempath
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       (if (and (null? incompleted)
                (null? oldlaunched)
                (null? toplevels))
           #f
           #t)))))

(define (db:get-status-from-final-status-file run-dir)
  (let ((infile (conc run-dir "/.final-status")))

    ;; first verify we are able to write the output file



    (if (not (file-readable? infile))
        (begin 
	  (debug:print 0 *default-log-port* "ERROR: cannot read " infile)
          (debug:print 0 *default-log-port* "ERROR: run-dir is " run-dir)
          #f
          )


        (with-input-from-file infile read-lines)




	)))

;;  select end_time-now from
;;      (select testname,item_path,event_time+run_duration as
;;                          end_time,strftime('%s','now') as now from tests where state in
;;      ('RUNNING','REMOTEHOSTSTART','LAUNCHED'));

(define (db:find-and-mark-incomplete dbstruct run-id ovr-deadtime)
  (let* ((incompleted '())







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       (if (and (null? incompleted)
                (null? oldlaunched)
                (null? toplevels))
           #f
           #t)))))

(define (db:get-status-from-final-status-file run-dir)
  (let* ((infile (conc run-dir "/.final-status"))
	 (found  (file-exists? infile)))
    ;; first verify we are able to write the output file
    (cond
     ((not found) #f)
     ((and (file-exists? infile)
	   (not (file-readable? infile)))

      (debug:print 0 *default-log-port* "ERROR: cannot read " infile)
      (debug:print 0 *default-log-port* "ERROR: run-dir is " run-dir)
      #f)

     (else
      (let ((res (condition-case
		  (with-input-from-file infile read-lines)
		  (exn (i/o file) #f))))
	(cond
	 ((equal? res "#!eof") #f)
	 ((eof-object? res)    #f)
	 (else res)))))))
     
;;  select end_time-now from
;;      (select testname,item_path,event_time+run_duration as
;;                          end_time,strftime('%s','now') as now from tests where state in
;;      ('RUNNING','REMOTEHOSTSTART','LAUNCHED'));

(define (db:find-and-mark-incomplete dbstruct run-id ovr-deadtime)
  (let* ((incompleted '())
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;; look up values in a header/data structure
(define (db:get-value-by-header row header field)
  (if (or (null? header) (not row))
      #f
      (let loop ((hed (car header))
                 (tal (cdr header))
                 (n   0))
        (if (equal? hed field)
            (handle-exceptions

             exn
             (begin
               (debug:print 0 *default-log-port* "WARNING: attempt to read non-existant field, row="
			    row " header=" header " field=" field ", exn=" exn)
               #f)
             (vector-ref row n))
	    (if (null? tal) #f (loop (car tal)(cdr tal)(+ n 1)))))))

;; Accessors for the header/data structure
;; get rows and header from 
(define (db:get-header vec)(vector-ref vec 0))
(define (db:get-rows   vec)(vector-ref vec 1))








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;; look up values in a header/data structure
(define (db:get-value-by-header row header field)
  (if (or (null? header) (not row))
      #f
      (let loop ((hed (car header))
                 (tal (cdr header))
                 (n   0))
        (if (equal? hed field);;(condition-case (vector-ref #(1 2 3) 3)(exn (bounds)(print "out of bounds")))
            (condition-case
		(vector-ref row n)
	      (exn (bounds)

		   (debug:print 0 *default-log-port* "WARNING: attempt to read non-existant field, row="
				row " header=" header " field=" field ", exn=" exn)
		   #f))

	    (if (null? tal) #f (loop (car tal)(cdr tal)(+ n 1)))))))

;; Accessors for the header/data structure
;; get rows and header from 
(define (db:get-header vec)(vector-ref vec 0))
(define (db:get-rows   vec)(vector-ref vec 1))

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;; use (get-value-by-header (db:get-header runinfo)(db:get-rows runinfo))
;; NOTE: Does NOT return a list of rows (or one row) for the first slot of the vector
;;       this is inconsistent with get-runs but it makes some sense.
;;
(define (db:get-run-info dbstruct run-id)
  ;;(if (hash-table-ref/default *run-info-cache* run-id #f)
  ;;    (hash-table-ref *run-info-cache* run-id)
  (let* ((res       (vector #f #f #f #f))
	 (keys      (db:get-keys dbstruct))
	 (remfields (list "id" "runname" "state" "status" "owner" "event_time" "comment" "fail_count" "pass_count" "contour" "last_update")) ;;  "area_id"))
	 (header    (append keys remfields))
	 (keystr    (conc (keys->keystr keys) ","
			  (string-intersperse remfields ","))))
    (debug:print-info 11 *default-log-port* "db:get-run-info run-id: " run-id " header: " header " keystr: " keystr)
    







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;; use (get-value-by-header (db:get-header runinfo)(db:get-rows runinfo))
;; NOTE: Does NOT return a list of rows (or one row) for the first slot of the vector
;;       this is inconsistent with get-runs but it makes some sense.
;;
(define (db:get-run-info dbstruct run-id)
  ;;(if (hash-table-ref/default *run-info-cache* run-id #f)
  ;;    (hash-table-ref *run-info-cache* run-id)
  (let* ((res       (make-vector 11 #f))
	 (keys      (db:get-keys dbstruct))
	 (remfields (list "id" "runname" "state" "status" "owner" "event_time" "comment" "fail_count" "pass_count" "contour" "last_update")) ;;  "area_id"))
	 (header    (append keys remfields))
	 (keystr    (conc (keys->keystr keys) ","
			  (string-intersperse remfields ","))))
    (debug:print-info 11 *default-log-port* "db:get-run-info run-id: " run-id " header: " header " keystr: " keystr)
    
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         (sqlite3:execute db "UPDATE runs SET status=? WHERE id=?;" status run-id)))))

(define (db:set-run-state-status dbstruct run-id state status )
  (db:with-db
   dbstruct #f #f
   (lambda (db)
          (sqlite3:execute db "UPDATE runs SET status=?,state=? WHERE id=?;" status state run-id))))



(define (db:get-run-status dbstruct run-id)
  (let ((res "n/a"))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (sqlite3:for-each-row 







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         (sqlite3:execute db "UPDATE runs SET status=? WHERE id=?;" status run-id)))))

(define (db:set-run-state-status dbstruct run-id state status )
  (db:with-db
   dbstruct #f #f
   (lambda (db)
          (sqlite3:execute db "UPDATE runs SET status=?,state=? WHERE id=?;" status state run-id))))



(define (db:get-run-status dbstruct run-id)
  (let ((res "n/a"))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (sqlite3:for-each-row 
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      ;; "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND run_id NOT IN (SELECT id FROM runs WHERE state='deleted') AND NOT (uname = 'n/a' AND item_path = '');")
      "SELECT count(id) FROM tests WHERE state in ('RUNNING','REMOTEHOSTSTART','LAUNCHED') AND run_id=?;" 
      run-id)))) ;; NOT IN (SELECT id FROM runs WHERE state='deleted');")

;; NEW BEHAVIOR: Look only at single run with run-id
;; 
;; (define (db:get-running-stats dbstruct run-id)
(define (db:get-count-tests-running-for-run-id dbstruct run-id) ;; fastmode)
  (let* ((qry ;; (if fastmode
		 ;;  "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND run_id=? LIMIT 1;"
		  "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND run_id=?;")) ;; )
    (db:with-db
     dbstruct
     run-id
     #f
     (lambda (db)
       (let* ((stmth (db:get-cache-stmth dbstruct db qry)))
	 (sqlite3:first-result stmth run-id))))))



;; For a given testname how many items are running? Used to determine
;; probability for regenerating html
;;
(define (db:get-count-tests-running-for-testname dbstruct run-id testname)
  (db:with-db
   dbstruct







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      ;; "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND run_id NOT IN (SELECT id FROM runs WHERE state='deleted') AND NOT (uname = 'n/a' AND item_path = '');")
      "SELECT count(id) FROM tests WHERE state in ('RUNNING','REMOTEHOSTSTART','LAUNCHED') AND run_id=?;" 
      run-id)))) ;; NOT IN (SELECT id FROM runs WHERE state='deleted');")

;; NEW BEHAVIOR: Look only at single run with run-id
;; 
;; (define (db:get-running-stats dbstruct run-id)
(define (db:get-count-tests-running-for-run-id dbstruct run-id) 


  (let* ((qry  "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND run_id=?;")) ;; )
    (db:with-db
     dbstruct
     run-id
     #f
     (lambda (db)
       (let* (#;(stmth (db:get-cache-stmth dbstruct db qry)))
	 #;(sqlite3:first-result stmth run-id)
	 (sqlite3:first-result db qry run-id)
	 )))))

;; For a given testname how many items are running? Used to determine
;; probability for regenerating html
;;
(define (db:get-count-tests-running-for-testname dbstruct run-id testname)
  (db:with-db
   dbstruct
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	 (item-path    (db:test-get-item-path testdat))
         (tl-testdat   (db:get-test-info dbstruct run-id test-name ""))
         (tl-test-id   (if tl-testdat
			   (db:test-get-id tl-testdat)
			   #f)))
    (if (member state '("LAUNCHED" "REMOTEHOSTSTART")) 
	(db:general-call dbstruct 'set-test-start-time run-id (list test-id)))
    ;; (mutex-lock! *db-transaction-mutex*)
    (db:with-db
     dbstruct run-id #f
     (lambda (db)

       (let ((tr-res
              (sqlite3:with-transaction
               db
               (lambda ()
                 ;; NB// Pass the db so it is part fo the transaction
		  ;; this call sets the item state/status
                 (db:db-test-set-state-status db run-id test-id state status comment)







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	 (item-path    (db:test-get-item-path testdat))
         (tl-testdat   (db:get-test-info dbstruct run-id test-name ""))
         (tl-test-id   (if tl-testdat
			   (db:test-get-id tl-testdat)
			   #f)))
    (if (member state '("LAUNCHED" "REMOTEHOSTSTART")) 
	(db:general-call dbstruct 'set-test-start-time run-id (list test-id)))

    (db:with-db
     dbstruct run-id #f
     (lambda (db)
       (mutex-lock! *db-transaction-mutex*)
       (let ((tr-res
              (sqlite3:with-transaction
               db
               (lambda ()
                 ;; NB// Pass the db so it is part fo the transaction
		  ;; this call sets the item state/status
                 (db:db-test-set-state-status db run-id test-id state status comment)
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                     (conc
		      (with-output-to-string (lambda () (pp (dbr:counts->alist x)))) " | "))
		       state-status-counts))); end debug:print
		       
                       (if tl-test-id
			   (db:db-test-set-state-status db run-id tl-test-id newstate newstatus #f)) ;; we are still in the transaction - must access the db and not the dbstruct
		       ))))))
         ;; (mutex-unlock! *db-transaction-mutex*)
         (if (and test-id state status (equal? status "AUTO")) 
             (db:test-data-rollup dbstruct run-id test-id status))
         tr-res)))
    ;; this was moved out of test-set-state-status
    (mt:process-triggers dbstruct run-id test-id state status)))









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                     (conc
		      (with-output-to-string (lambda () (pp (dbr:counts->alist x)))) " | "))
		       state-status-counts))); end debug:print
		       
                       (if tl-test-id
			   (db:db-test-set-state-status db run-id tl-test-id newstate newstatus #f)) ;; we are still in the transaction - must access the db and not the dbstruct
		       ))))))
         (mutex-unlock! *db-transaction-mutex*)
         (if (and test-id state status (equal? status "AUTO")) 
             (db:test-data-rollup dbstruct run-id test-id status))
         tr-res)))
    ;; this was moved out of test-set-state-status
    (mt:process-triggers dbstruct run-id test-id state status)))


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			  "\n--> newstatus            "newstatus
			  "\n\n")

	;; NB// Pass the db so it is part of the transaction
	(list newstate newstatus))))

(define (db:set-state-status-and-roll-up-run dbstruct run-id curr-state curr-status)
  ;; (mutex-lock! *db-transaction-mutex*)
    (db:with-db
     dbstruct #f #f
     (lambda (db)

       (let ((tr-res
              (sqlite3:with-transaction
               db
               (lambda ()
                 (let* ((state-status-counts  (db:get-all-state-status-counts-for-run dbstruct run-id))
			(state-statuses       (db:roll-up-rules state-status-counts #f #f ))
                        (newstate             (car state-statuses))
                        (newstatus            (cadr state-statuses))) 
                   (if (or (not (eq? newstate curr-state)) (not (eq?  newstatus curr-status)))

                       (db:set-run-state-status dbstruct run-id newstate newstatus )))))))



         ;; (mutex-unlock! *db-transaction-mutex*)
         tr-res))))


(define (db:get-all-state-status-counts-for-run dbstruct run-id)
 (let* ((test-count-recs (db:with-db
                          dbstruct #f #f
                          (lambda (db)
                            (sqlite3:map-row
                             (lambda (state status count)







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			  "\n--> newstatus            "newstatus
			  "\n\n")

	;; NB// Pass the db so it is part of the transaction
	(list newstate newstatus))))

(define (db:set-state-status-and-roll-up-run dbstruct run-id curr-state curr-status)

  (db:with-db
   dbstruct #f #f
   (lambda (db)
     (mutex-lock! *db-transaction-mutex*)
     (let ((tr-res
	    (sqlite3:with-transaction
	     db
	     (lambda ()
	       (let* ((state-status-counts  (db:get-all-state-status-counts-for-run dbstruct run-id))
		      (state-statuses       (db:roll-up-rules state-status-counts #f #f ))
		      (newstate             (car state-statuses))
		      (newstatus            (cadr state-statuses))) 
		 (if (or (not (eq? newstate curr-state)) (not (eq?  newstatus curr-status)))
		     (begin
		       (db:set-run-state-status dbstruct run-id newstate newstatus)
		       #t) ;; changes made
		     #f) ;; no changes
		 )))))
       (mutex-unlock! *db-transaction-mutex*)
       tr-res))))


(define (db:get-all-state-status-counts-for-run dbstruct run-id)
 (let* ((test-count-recs (db:with-db
                          dbstruct #f #f
                          (lambda (db)
                            (sqlite3:map-row
                             (lambda (state status count)
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			    (begin
                              (handle-exceptions
                               exn
                               (begin
                                  (debug:print 0 *default-log-port*
                                  "WARNING: itemmap has problem \"" itemmap "\", patt: " patt ", repl: " repl ", exn=" exn)
                                 res)
                              (string-substitute patt repl res))


                              )
			    (begin
                              (debug:print 0 *default-log-port*
                               "WARNING: itemmap has problem \"" itemmap "\", patt: " patt ", repl: " repl)
			      res))))
	    (if (null? tal)
		newr
		(loop (car tal)(cdr tal) newr)))))))







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			    (begin
                              (handle-exceptions
                               exn
                               (begin
                                  (debug:print 0 *default-log-port*
                                  "WARNING: itemmap has problem \"" itemmap "\", patt: " patt ", repl: " repl ", exn=" exn)
                                 res)
                              (string-substitute patt repl res)))



			    (begin
                              (debug:print 0 *default-log-port*
                               "WARNING: itemmap has problem \"" itemmap "\", patt: " patt ", repl: " repl)
			      res))))
	    (if (null? tal)
		newr
		(loop (car tal)(cdr tal) newr)))))))
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;; run this one in a transaction where first check if host:port is taken
(define (db:register-server dbstruct host port servkey pid ipaddr apath dbname)
  (db:with-db
   dbstruct
   #f #f
   (lambda (db)

     (sqlite3:with-transaction
      db
      (lambda ()
	(let* ((sinfo      (db:get-server-info dbstruct apath dbname)))
	  (if sinfo
	      (begin
		(debug:print-info 0 *default-log-port* "Server already running at "sinfo ", while trying to register server " host":"port)
		#f) ;; server already registered
	      (begin
		(sqlite3:execute db "INSERT INTO servers (host,port,servkey,pid,ipaddr,apath,dbname) VALUES (?,?,?,?,?,?,?);"
				 host port servkey pid ipaddr apath dbname)
		(db:get-server-info dbstruct apath dbname)))))))))


  
;; run this one in a transaction where first check if host:port is taken
(define (db:deregister-server dbstruct host port servkey pid ipaddr apath dbname)
  (db:with-db
   dbstruct
   #f #f
   (lambda (db)

     (sqlite3:with-transaction
      db
      (lambda ()
	(let* ((sinfo      (db:get-server-info dbstruct apath dbname)))
	  (if (not sinfo)
	      (begin
		(debug:print-info 0 *default-log-port* "Server already removed for "apath", "dbname) ;; at "sinfo ", while trying to register server " host":"port)
		#f) ;; server already deregistered
	      (begin
		(sqlite3:execute db "DELETE FROM servers WHERE apath=? AND dbname=?;" ;; (host,port,servkey,pid,ipaddr,apath,dbname) VALUES (?,?,?,?,?,?,?);"
				 ;; host port servkey pid ipaddr
				 apath dbname)
		#;(db:get-server-info dbstruct apath dbname)
		'done))))))))



(define (db:get-server-info dbstruct apath dbname)
  (db:with-db
   dbstruct
   #f #f
   (lambda (db)
     (sqlite3:fold-row







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;; run this one in a transaction where first check if host:port is taken
(define (db:register-server dbstruct host port servkey pid ipaddr apath dbname)
  (db:with-db
   dbstruct
   #f #f
   (lambda (db)
     (mutex-lock! *db-transaction-mutex*)
     (sqlite3:with-transaction
      db
      (lambda ()
	(let* ((sinfo      (db:get-server-info dbstruct apath dbname))
	       (res 	   (if sinfo
			       (begin
				 (debug:print-info 0 *default-log-port* "Server already running at "sinfo ", while trying to register server " host":"port)
				 #f) ;; server already registered
			       (begin
				 (sqlite3:execute db "INSERT INTO servers (host,port,servkey,pid,ipaddr,apath,dbname) VALUES (?,?,?,?,?,?,?);"
						  host port servkey pid ipaddr apath dbname)
				 (db:get-server-info dbstruct apath dbname)))))
	  (mutex-unlock! *db-transaction-mutex*)
	  res))))))
  
;; run this one in a transaction where first check if host:port is taken
(define (db:deregister-server dbstruct host port servkey pid ipaddr apath dbname)
  (db:with-db
   dbstruct
   #f #f
   (lambda (db)
     (mutex-lock! *db-transaction-mutex*)
     (let ((res (sqlite3:with-transaction
		 db
		 (lambda ()
		   (let* ((sinfo      (db:get-server-info dbstruct apath dbname)))
		     (if (not sinfo)
			 (begin
			   (debug:print-info 0 *default-log-port* "Server already removed for "apath", "dbname) ;; at "sinfo ", while trying to register server " host":"port)
			   #f) ;; server already deregistered
			 (begin
			   (sqlite3:execute db "DELETE FROM servers WHERE apath=? AND dbname=?;" ;; (host,port,servkey,pid,ipaddr,apath,dbname) VALUES (?,?,?,?,?,?,?);"
					    ;; host port servkey pid ipaddr
					    apath dbname)
			   #;(db:get-server-info dbstruct apath dbname)
			   'done)))))))
       (mutex-unlock! *db-transaction-mutex*)
       res))))

(define (db:get-server-info dbstruct apath dbname)
  (db:with-db
   dbstruct
   #f #f
   (lambda (db)
     (sqlite3:fold-row

Modified dcommon.scm from [217250003b] to [c806284f28].

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(declare (uses mtver))
(declare (uses debugprint))
(declare (uses commonmod))
(declare (uses configfmod))
(declare (uses rmtmod))
(declare (uses mtargs))
(declare (uses testsmod))


(module dcommon
	*

 (import scheme
	 chicken.base
	 chicken.condition







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(declare (uses mtver))
(declare (uses debugprint))
(declare (uses commonmod))
(declare (uses configfmod))
(declare (uses rmtmod))
(declare (uses mtargs))
(declare (uses testsmod))
(declare (uses dbmgrmod))

(module dcommon
	*

 (import scheme
	 chicken.base
	 chicken.condition
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	 srfi-69
	 sparse-vectors
	 srfi-1
	 )

(import mtver
	dbmod

	commonmod
	debugprint
	configfmod
	rmtmod
	;; gutils
	(prefix mtargs args:)
	testsmod)

;; (include "megatest-version.scm")
(include "common_records.scm")
;; (include "db_records.scm")
;; (include "key_records.scm")
;; (include "run_records.scm")

;; yes, this is non-ideal 
(define dashboard:update-summary-tab #f)
(define dashboard:update-servers-table #f)

(define *last-monitor-update-time* 0)
(define *exit-started* #f)


;;======================================================================
;; C O M M O N   D A T A   S T R U C T U R E
;;======================================================================
;; 
;; data common to all tabs goes here
;;







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	 srfi-69
	 sparse-vectors
	 srfi-1
	 )

(import mtver
	dbmod
	dbmgrmod
	commonmod
	debugprint
	configfmod
	rmtmod
	;; gutils
	(prefix mtargs args:)
	testsmod)

;; (include "megatest-version.scm")
(include "common_records.scm")
;; (include "db_records.scm")
;; (include "key_records.scm")
;; (include "run_records.scm")

;; yes, this is non-ideal 
(define dashboard:update-summary-tab #f)
(define dashboard:update-servers-table #f)

(define *last-monitor-update-time* 0)
(define *exit-started* #f)


;;======================================================================
;; C O M M O N   D A T A   S T R U C T U R E
;;======================================================================
;; 
;; data common to all tabs goes here
;;
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  (let ((src-ht (dboard:rundat-tests rundat))
	(trg-ht (dboard:rundat-tests-by-name rundat)))
    (if (and (hash-table? src-ht)(hash-table? trg-ht))
	(begin
	  (hash-table-clear! trg-ht)
	  (for-each
	   (lambda (testdat)

	     (hash-table-set! trg-ht (test:test-get-fullname testdat) testdat))

	   (hash-table-values src-ht)))
	(debug:print 0 *default-log-port* "WARNING: src-ht " src-ht " trg-ht " trg-ht))))
  

;;======================================================================
;; TESTS DATA
;;======================================================================







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  (let ((src-ht (dboard:rundat-tests rundat))
	(trg-ht (dboard:rundat-tests-by-name rundat)))
    (if (and (hash-table? src-ht)(hash-table? trg-ht))
	(begin
	  (hash-table-clear! trg-ht)
	  (for-each
	   (lambda (testdat)
	     (if (test:testdat? testdat)
		 (hash-table-set! trg-ht (test:test-get-fullname testdat) testdat)
		 (debug:print 0 *default-log-port* "WARNING: invalid testdat record: "testdat)))
	   (hash-table-values src-ht)))
	(debug:print 0 *default-log-port* "WARNING: src-ht " src-ht " trg-ht " trg-ht))))
  

;;======================================================================
;; TESTS DATA
;;======================================================================

Modified debugprint.scm from [2f3aa7f0ad] to [03faa79da0].

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(declare (unit debugprint))
(declare (uses mtargs))

(module debugprint
	*
	
;;(import scheme chicken data-structures extras files ports)
(import scheme
	chicken.base
	chicken.string


	chicken.port
	chicken.process-context
	chicken.process-context.posix
	
	(prefix mtargs args:)
	srfi-1
	system-information
	)

;;======================================================================
;; debug stuff
;;======================================================================

(define verbosity (make-parameter '()))
(define *default-log-port*  (current-error-port))
(define debug:print-logger (make-parameter #f)) ;; se to a proc to call on every logging print
	 
(define (debug:setup)
  (let ((debugstr (or (args:get-arg "-debug")
      		      (args:get-arg "-debug-noprop")
      		      (get-environment-variable "MT_DEBUG_MODE"))))
    (verbosity (debug:calc-verbosity debugstr 'q))
    (debug:check-verbosity (verbosity) debugstr)
    ;; if we were handed a bad verbosity rule then we will override it with 1 and continue
    (if (verbosity)(verbosity 1))
    (if (and (not (args:get-arg "-debug-noprop"))
      	     (or (args:get-arg "-debug")
      		 (not (get-environment-variable "MT_DEBUG_MODE"))))
      	(set-environment-variable! "MT_DEBUG_MODE" (if (list? (verbosity))
      				    (string-intersperse (map conc (verbosity)) ",")
      				    (conc (verbosity)))))))











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(declare (unit debugprint))
(declare (uses mtargs))

(module debugprint
	*
	
;;(import scheme chicken data-structures extras files ports)
(import scheme
	chicken.base
	chicken.string
	chicken.time
	chicken.time.posix
	chicken.port
	chicken.process-context
	chicken.process-context.posix
	
	(prefix mtargs args:)
	srfi-1
	system-information
	)

;;======================================================================
;; debug stuff
;;======================================================================

(define verbosity (make-parameter '()))
(define *default-log-port*  (current-error-port))
(define debug:print-logger (make-parameter #f)) ;; set to a proc to call on every logging print
	 
(define (debug:setup)
  (let ((debugstr (or (args:get-arg "-debug")
      		      (args:get-arg "-debug-noprop")
      		      (get-environment-variable "MT_DEBUG_MODE"))))
    (verbosity (debug:calc-verbosity debugstr 'q))
    (debug:check-verbosity (verbosity) debugstr)
    ;; if we were handed a bad verbosity rule then we will override it with 1 and continue
    (if (not (verbosity))(verbosity 1))
    (if (and (not (args:get-arg "-debug-noprop"))
      	     (or (args:get-arg "-debug")
      		 (not (get-environment-variable "MT_DEBUG_MODE"))))
      	(set-environment-variable! "MT_DEBUG_MODE" (if (list? (verbosity))
      				    (string-intersperse (map conc (verbosity)) ",")
      				    (conc (verbosity)))))))

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(define (debug:handle-remote-logging params)
  (if (debug:print-logger) ;; NOTE: turn params into string to keep things simple for now
      ((debug:print-logger)(conc "REMOTE ("(get-host-name)", pid="(current-process-id)") "
				 (string-intersperse (map conc params) " ") "; "
				 (string-intersperse (command-line-arguments) " ")))))









(define (debug:print n e . params)
  (if (debug:debug-mode n)
      (with-output-to-port (or e (current-error-port))
	(lambda ()
	  ;; (if *logging*
	      ;; (db:log-event (apply conc params))
	  (apply print params)
	  (debug:handle-remote-logging params)
	  )))
  #t ;; only here to make remote stuff happy. It'd be nice to fix that ...
  )

(define (debug:print-error n e . params)
  ;; normal print
  (if (debug:debug-mode n)
      (with-output-to-port (if (port? e) e (current-error-port))
	(lambda ()
	  (apply print "ERROR: " params)
	  (debug:handle-remote-logging (cons "ERROR: " params))
	  )))
  ;; pass important messages to stderr
  (if (and (eq? n 0)(not (eq? e (current-error-port)))) 
      (with-output-to-port (current-error-port)
	(lambda ()
	  (apply print "ERROR: " params)
	  ))))

(define (debug:print-info n e . params)
  (if (debug:debug-mode n)
      (with-output-to-port (if (port? e) e (current-error-port))
	(lambda ()
	  (apply print "INFO: (" n ") " params) ;; res)
	  (debug:handle-remote-logging (cons "INFO: " params))
	  ))))

(define (debug:print-warn n e . params)
  (if (debug:debug-mode n)
      (with-output-to-port (if (port? e) e (current-error-port))
	(lambda ()
	  (apply print "WARN: (" n ") " params) ;; res)
	  (debug:handle-remote-logging (cons "WARN: " params))
	  ))))
)







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(define (debug:handle-remote-logging params)
  (if (debug:print-logger) ;; NOTE: turn params into string to keep things simple for now
      ((debug:print-logger)(conc "REMOTE ("(get-host-name)", pid="(current-process-id)") "
				 (string-intersperse (map conc params) " ") "; "
				 (string-intersperse (command-line-arguments) " ")))))

(define debug:enable-timestamp (make-parameter #t))

(define (debug:timestamp)
  (if (debug:enable-timestamp)
      (conc (time->string 
	     (seconds->local-time (current-seconds)) "%H:%M:%S") " ")
      ""))

  (define (debug:print n e . params)
  (if (debug:debug-mode n)
      (with-output-to-port (or e (current-error-port))
	(lambda ()
	  ;; (if *logging*
	      ;; (db:log-event (apply conc params))
	  (apply print (debug:timestamp) params)
	  ;; (debug:handle-remote-logging params)
	  )))
  #t ;; only here to make remote stuff happy. It'd be nice to fix that ...
  )

(define (debug:print-error n e . params)
  ;; normal print
  (if (debug:debug-mode n)
      (with-output-to-port (if (port? e) e (current-error-port))
	(lambda ()
	  (apply print "ERROR: " (debug:timestamp) params)
	  ;; (debug:handle-remote-logging (cons "ERROR: " params))
	  )))
  ;; pass important messages to stderr
  (if (and (eq? n 0)(not (eq? e (current-error-port)))) 
      (with-output-to-port (current-error-port)
	(lambda ()
	  (apply print "ERROR: " (debug:timestamp) params)
	  ))))

(define (debug:print-info n e . params)
  (if (debug:debug-mode n)
      (with-output-to-port (if (port? e) e (current-error-port))
	(lambda ()
	  (apply print "INFO: (" n ") "(debug:timestamp) params) ;; res)
	  ;; (debug:handle-remote-logging (cons "INFO: " params))
	  ))))

(define (debug:print-warn n e . params)
  (if (debug:debug-mode n)
      (with-output-to-port (if (port? e) e (current-error-port))
	(lambda ()
	  (apply print "WARN: (" n ") " (debug:timestamp) params) ;; res)
	  ;; (debug:handle-remote-logging (cons "WARN: " params))
	  ))))
)

Deleted hostinfo.scm version [e131d5b66f].

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;;======================================================================
;; Copyright 2019, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(declare (unit hostinfo))

(include "hostinfo/hostinfo.scm")
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Deleted hostinfo/hostinfo.h version [4f39d60970].

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#ifdef _WIN32
# include <winsock2.h>
# include <ws2tcpip.h>

const char *inet_ntop(int af, const void *src, char *dst, socklen_t cnt)
{
        if (af == AF_INET)
        {
                struct sockaddr_in in;
                memset(&in, 0, sizeof(in));
                in.sin_family = AF_INET;
                memcpy(&in.sin_addr, src, sizeof(struct in_addr));
                getnameinfo((struct sockaddr *)&in, sizeof(struct
sockaddr_in), dst, cnt, NULL, 0, NI_NUMERICHOST);
                return dst;
        }
        else if (af == AF_INET6)
        {
                struct sockaddr_in6 in;
                memset(&in, 0, sizeof(in));
                in.sin6_family = AF_INET6;
                memcpy(&in.sin6_addr, src, sizeof(struct in_addr6));
                getnameinfo((struct sockaddr *)&in, sizeof(struct
sockaddr_in6), dst, cnt, NULL, 0, NI_NUMERICHOST);
                return dst;
        }
        return NULL;
}

int inet_pton(int af, const char *src, void *dst)
{
        struct addrinfo hints, *res, *ressave;

        memset(&hints, 0, sizeof(struct addrinfo));
        hints.ai_family = af;

        if (getaddrinfo(src, NULL, &hints, &res) != 0)
        {
                return -1;
        }

        ressave = res;

        while (res)
        {
                memcpy(dst, res->ai_addr, res->ai_addrlen);
                res = res->ai_next;
        }

        freeaddrinfo(ressave);
        return 0;
}

#else
 # include <sys/types.h>
 # include <sys/socket.h>
 # include <netinet/in.h>  /* in_addr */
# include <arpa/inet.h>   /* inet_ntop, ... */
# include <netdb.h>       /* hostent, gethostby* */
# include <unistd.h>
#endif
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Deleted hostinfo/hostinfo.meta version [90c3b6c82d].

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;;; hostinfo.meta -*- Hen -*-
((synopsis "Look up host, protocol, and service information")
 (author "Jim Ursetto")
 (needs vector-lib foreigners)
 (egg "hostinfo.egg")
 (files "hostinfo.h" "hostinfo.meta" "hostinfo.scm" "hostinfo.setup")
 (license "BSD")
 (doc-from-wiki)
 (category net))
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Deleted hostinfo/hostinfo.scm version [15139d566b].

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;;; hostinfo extension to Chicken Scheme
;;; Description: Look up host, service, and protocol information

;; Copyright (c) 2005-2008, Jim Ursetto.  All rights reserved.
;;
;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions are met:
;;
;;   Redistributions of source code must retain the above copyright notice,
;;   this list of conditions and the following disclaimer. Redistributions in
;;   binary form must reproduce the above copyright notice, this list of
;;   conditions and the following disclaimer in the documentation and/or
;;   other materials provided with the distribution. Neither the name of the
;;   author nor the names of its contributors may be used to endorse or
;;   promote products derived from this software without specific prior
;;   written permission.
;;
;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
;; IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
;; THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
;; PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
;; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
;; EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
;; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
;; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

;;;

;; This extension performs host, protocol and service information lookups
;; via underlying calls to gethostbyname(3), getprotobyname(3), and
;; getservbyname(3).  Depending on your system, this may consult DNS,
;; NIS, /etc/hosts, /etc/services, /etc/protocols, and so on.

;; A simple interface is provided for the most commmon queries. Also
;; provided is a more comprehensive interface using records, which
;; contain all data available in a lookup.

;; IP addresses are represented by 4 (IPv4) or 16 (IPv6) byte
;; u8vectors. The interface requires, and returns, addresses in this
;; format; functions are provided to convert between the string and
;; u8vector representations. However, the "do what I want" procedures
;; (e.g. host-information) will do the conversion for you.

;; Caveats:
;; - IPv6 addresses can be converted to and from strings, and the underlying structure
;;   supports IPv6, but lookup of IPv6 addresses and records is not currently implemented.
;; - array0->string-vector and array0->bytevector-vector contain redundant code.
;; - host, services, and protocol-information check their argument types, even
;;   though the underlying code already does it.

(declare
 (fixnum))

(cond-expand [paranoia]
             [else
              (declare (no-bound-checks))])

#> #include "../hostinfo/hostinfo.h" <#

;; (require-extension srfi-4 lolevel posix)

(module hostinfo
;;; Short and sweet lookups
  (current-hostname
   hostname->ip ip->hostname
   protocol-name->number protocol-number->name
   service-port->name service-name->port
;;; Entire host, protocol or service record lookup
   hostname->hostinfo ip->hostinfo
   protocol-name->protoinfo protocol-number->protoinfo
   service-port->servinfo service-name->servinfo
;;; Record accessors and predicates
   hostinfo? hostinfo-name hostinfo-aliases hostinfo-addresses
   hostinfo-address hostinfo-type hostinfo-length
   protoinfo? protoinfo-name protoinfo-aliases protoinfo-number
   servinfo? servinfo-name servinfo-aliases servinfo-port servinfo-protocol
;;; One-stop shops -- does what you want
   host-information protocol-information service-information
;;; Utilities
   string->ip ip->string)

  (import chicken.fixnum chicken.string chicken.blob srfi-2 scheme
          typed-records srfi-9 chicken.foreign srfi-4 chicken.base
	  foreigners system-information
	  chicken.format)

  (define (vector-map p v0)   ; to avoid linking in vector-lib
    (let* ((len (vector-length v0))
           (v (make-vector len)))
      (do ((i 0 (+ i 1)))
          ((>= i len) v)
        (vector-set! v i
                     (p i (vector-ref v0 i))))))

  (cond-expand [unsafe
                (eval-when (compile)
                           (define-inline (##sys#check-string . r)
                             (##core#undefined))) ]
               [else])

;;; C data structure conversions

  (define (c-pointer->blob ptr len)
    (let ((bv (make-blob len))
          (memcpy (foreign-lambda bool "C_memcpy" blob c-pointer integer)))
      (memcpy bv ptr len)
      bv))

;; Convert from null-terminated array of c-strings to vector of strings.
;; These functions use C_alloc and so are not suitable for large datasets.
;; Note: get_argv_2 of runtime.c shows how to build a list instead of a vector (in reverse).
  (define array0->string-vector
    (foreign-primitive scheme-object (((c-pointer "char *") list)) "
    char **p; int len = 0;
    C_word *a, vec, *elt;

    for (p = list; *p; ++p, ++len);

    a = C_alloc(C_SIZEOF_VECTOR(len));
    vec = (C_word)a;
    *a++ = C_make_header(C_VECTOR_TYPE, len);

    for (p = list; *p; ++p) {
       len = strlen(*p);
       elt = C_alloc(C_SIZEOF_STRING(len));
       /* Both C_mutate and *a++ =  seem to work fine here. */
       C_mutate(a++, C_string(&elt, len, *p));
    }
    return(vec);"
                       ))

  ;; Convert from null-terminated array of IP addresses to vector of strings.
  (define array0->bytevector-vector
    (foreign-primitive scheme-object (((c-pointer "char *") list) (integer addrlen)) "
    char **p; int len = 0;
    C_word *a, vec, *elt;

    for (p = list; *p; ++p, ++len);

    a = C_alloc(C_SIZEOF_VECTOR(len));
    vec = (C_word)a;
    *a++ = C_make_header(C_VECTOR_TYPE, len);

    for (p = list; *p; ++p) {
       elt = C_alloc(C_SIZEOF_STRING(addrlen));
       C_mutate(a++, C_bytevector(&elt, addrlen, *p));
    }
    return(vec);"
                       ))

  ;; Not currently used.  Could make the array0-> stuff somewhat cleaner.
  ;; (define array0-length
  ;;   (foreign-lambda* integer (((pointer "void *") list)) #<<EOF
  ;;     void **p; int len = 0;
  ;;     for (p = list; *p; ++p, ++len);
  ;;     return(len);
  ;; EOF
  ;; ))

;;; string->ip conversion

  ;; inet_pton does not like "127.1", nor "0", nor any other non-standard
  ;; representation of IP addresses.  This is specified by RFC2553.
  ;; inet_aton resolves these addresses.  We use inet_pton here.

  (define-foreign-variable inet4-addrstrlen integer "INET_ADDRSTRLEN")
  (define-foreign-variable inet6-addrstrlen integer "INET6_ADDRSTRLEN")
  (define-foreign-variable af-inet  integer "AF_INET")
  (define-foreign-variable af-inet6 integer "AF_INET6")

  (define inet-ntop (foreign-lambda c-string "inet_ntop" integer u8vector c-string integer))
  (define inet-pton (foreign-lambda* bool ((integer type) (c-string src) (blob dest))
                                     "return(inet_pton(type, src, dest) == 1);"))

  (define (string->ip4 str)
    (##sys#check-string str 'string->ip4)
    (let ((bv (make-blob 4)))
      (and (inet-pton af-inet str bv)
           (blob->u8vector bv))))

  (define (string->ip6 str)
    (##sys#check-string str 'string->ip6)
    (let ((bv (make-blob 16)))
      (and (inet-pton af-inet6 str bv)
           (blob->u8vector bv))))

  (define (string->ip str)
    (or (string->ip4 str)
        (string->ip6 str)))

;;; ip->string conversion

  (define (ip4->string addr)
    (let ((len inet4-addrstrlen))
      (inet-ntop af-inet addr (make-string len) len)))

  (define (ip6->string addr)
    (let ((len inet6-addrstrlen))
      (inet-ntop af-inet6 addr (make-string len) len)))

  ;; Take an IPv4 or IPv6 u8vector and convert it into the
  ;; appropriate string representation, via inet_ntop.
  (define (ip->string addr)
    (let ((len (u8vector-length addr)))
      (cond ((fx= len 4)  (ip4->string addr))
            ((fx= len 16) (ip6->string addr))
            (else
             (error "Invalid IP address length" addr)))))

;;; hostent raw structure

  (define-foreign-record-type (hostent "struct hostent")
    (c-string h_name hostent-name)
    (c-pointer h_aliases hostent-h_aliases)
    (integer h_addrtype hostent-addrtype)
    (integer h_length hostent-length)
    (c-pointer h_addr_list hostent-addr-list))

  ;; Some convenient accessors for the raw hostent structure--with raw c pointers
  ;; converted to the appropriate scheme objects.  We only use these once or twice
  ;; below, so their main advantage is clarity.
  (define (hostent-aliases h)
    (array0->string-vector (hostent-h_aliases h)))
  (define (hostent-address h)
    (let* ((get-addr (foreign-lambda* c-pointer ((hostent h)) "return(h->h_addr_list[0]);"))
           (addr (get-addr h)))
      (blob->u8vector
       (c-pointer->blob addr (hostent-length h)))))
  (define (hostent-addresses h)
    (vector-map (lambda (i x) (blob->u8vector x))
                (array0->bytevector-vector (hostent-addr-list h)
                                           (hostent-length h))))
  ;; The IPv6 equivalents of these are getipnodebyname and
  ;; getipnodebyaddr.
  (define gethostent/name (foreign-lambda hostent "gethostbyname" c-string))

  (define (gethostent/addr addr)
    (if (fx= (u8vector-length addr) 4)
        (gethostent/addr/bv (u8vector->blob addr))
        (error "invalid IP address length; only IPv4 supported" addr)))

  ;; Warning: handle IPv6!!
  (define gethostent/addr/bv (foreign-lambda* hostent ((blob addr))
                                              "return(gethostbyaddr((const char *)addr, 4, AF_INET));"))

  ;; This was originally made a macro so we could easily return multiple
  ;; values -- but we're now returning a hostinfo structure.  Eh.
  (define (hostent->hostinfo h)
    (make-hostinfo (hostent-name h)
                   (hostent-addresses h)
                   (hostent-aliases h)))

;;; hostinfo and host information

  ;; The standard host name for the current processor.
  ;; Gets & Sets, error otherwise.

  (define set-host-name!
    (foreign-lambda* int ((c-string name))
                     "return(sethostname(name, strlen(name)));"))

  (define (current-hostname . args)
    (if (null? args)
        (get-host-name)
        (and (zero? (set-host-name! (->string (car args))))
             (error 'current-hostname "cannot set hostname"))))

  ;; Structure accessors created by define-foreign-record do not intercept
  ;; NULL pointer input, including #f.
  (define (hostname->ip host)
    (and-let* ((h (gethostent/name host)))
      (hostent-address h)))

  (define (hostname->hostinfo host)
    (and-let* ((h (gethostent/name host)))
      (hostent->hostinfo h)))

  (define (ip->hostname addr)
    (and-let* ((h (gethostent/addr addr)))
      (hostent-name h)))

  (define (ip->hostinfo addr)
    (and-let* ((h (gethostent/addr addr)))
      (hostent->hostinfo h)))

  ;; A simple hostinfo structure.
  (define-record-type hostinfo
    (make-hostinfo name addresses aliases)
    hostinfo?
    (name hostinfo-name)
    (addresses hostinfo-addresses)
    (aliases hostinfo-aliases))

  ;; "Accessors" for phantom fields.
  ;; We don't need to store length or type, as these are artifacts
  ;; of the C implementation, and can be derived from the address itself.
  (define (hostinfo-address h) (vector-ref (hostinfo-addresses h) 0))
  (define (hostinfo-length h) (u8vector-length (hostinfo-address h)))
  (define (hostinfo-type h)
    (let ((len (u8vector-length (hostinfo-address h))))
      (cond ((fx= len 4)  'AF_INET)   ;; Kind of a dummy implementation--
            ((fx= len 16) 'AF_INET6)  ;; not sure what value would be appropriate
            (else
             (error "Invalid IP address length" (hostinfo-address h))))))

  ;; Format the structure for easy interactive viewing--should be possible to
  ;; add a ctor for this representation, though it's not clear why you'd want to.
  (define-record-printer (hostinfo h port)
    (fprintf port "#,(hostinfo name: ~S addresses: ~S aliases: ~S)"
             (hostinfo-name h) (hostinfo-addresses h) (hostinfo-aliases h)))

  ;; Warning:  lookup of an IP address which is invalid yet numeric will
  ;; return a false positive.  Bug in gethostbyname?
  ;; E.g.  (hostname->hostinfo "1") => #,(hostinfo name: "1" addresses: (#u8(0 0 0 1)))
  ;; ** If we used inet_aton for string->ip, then these cases would
  ;; be transformed into u8vector IPs, and the lookup would correctly fail.

  ;; Return a hostinfo record.  HOST is a u8vector IP address, a string
  ;; hostname, or a string numeric IP address.
  (define (host-information host)
    (if (u8vector? host)
        (ip->hostinfo host)
        (begin
          (##sys#check-string host 'host-information)
          (cond ((string->ip host) => ip->hostinfo)
                (else (hostname->hostinfo host))))))

;;; protocols

  (define-foreign-record-type (protoent "struct protoent")
    (c-string p_name protoent-name)
    (c-pointer p_aliases protoent-p_aliases)
    (integer p_proto protoent-proto))

  (define getprotoent/name   (foreign-lambda protoent "getprotobyname" c-string))
  (define getprotoent/number (foreign-lambda protoent "getprotobynumber" integer))

  ;; Raw structure -> scheme-object accessors
  (define (protoent-aliases p)
    (array0->string-vector (protoent-p_aliases p)))

  (define-record-type protoinfo
    (make-protoinfo name number aliases)
    protoinfo?
    (name protoinfo-name)
    (number protoinfo-number)
    (aliases protoinfo-aliases))

  (define-record-printer (protoinfo p port)
    (fprintf port "#,(protoinfo name: ~S number: ~S aliases: ~S)"
             (protoinfo-name p) (protoinfo-number p) (protoinfo-aliases p)))

  (define (protocol-name->number name)
    (and-let* ((p (getprotoent/name name)))
      (protoent-proto p)))
  (define (protocol-number->name nr)
    (and-let* ((p (getprotoent/number nr)))
      (protoent-name p)))

  (define (protoent->protoinfo p)
    (make-protoinfo (protoent-name p)
                    (protoent-proto p)
                    (protoent-aliases p)))

  (define (protocol-name->protoinfo name)
    (and-let* ((p (getprotoent/name name)))
      (protoent->protoinfo p)))
  (define (protocol-number->protoinfo nr)
    (and-let* ((p (getprotoent/number nr)))
      (protoent->protoinfo p)))

  (define (protocol-information proto)
    (if (fixnum? proto)
        (protocol-number->protoinfo proto)
        (begin
          (##sys#check-string proto 'protocol-information)
          (protocol-name->protoinfo proto))))

;;; services

  (define-foreign-type port-number int
    (foreign-lambda int "htons" int)
    (foreign-lambda int "ntohs" int) )

  (define-foreign-record-type (servent "struct servent")
    (c-string s_name servent-name)
    (c-pointer s_aliases servent-s_aliases)
    (port-number s_port servent-port)
    (c-string s_proto servent-proto))

  (define (servent->servinfo s)
    (make-servinfo (servent-name s)
                   (servent-port s)
                   (array0->string-vector
                    (servent-s_aliases s))
                   (servent-proto s)))

  (define getservent/name (foreign-lambda servent "getservbyname" c-string c-string))
  (define getservent/port (foreign-lambda servent "getservbyport" port-number c-string))

  (define-record-type servinfo
    (make-servinfo name port aliases protocol)
    servinfo?
    (name servinfo-name)
    (port servinfo-port)
    (aliases servinfo-aliases)
    (protocol servinfo-protocol))

  (define-record-printer (servinfo s port)
    (fprintf port "#,(servinfo name: ~S port: ~S aliases: ~S protocol: ~S)"
             (servinfo-name s) (servinfo-port s) (servinfo-aliases s) (servinfo-protocol s)))

  ;; If provided with the optional protocol argument (a string), these will
  ;; restrict their search to that protocol.
  (define (service-name->port name . pr)
    (let-optionals pr ((proto #f))
                   (and-let* ((s (getservent/name name proto)))
                     (servent-port s))))
  (define (service-port->name port . pr)
    (let-optionals pr ((proto #f))
                   (and-let* ((s (getservent/port port proto)))
                     (servent-name s))))
  (define (service-name->servinfo name . pr)
    (let-optionals pr ((proto #f))
                   (and-let* ((s (getservent/name name proto)))
                     (servent->servinfo s))))
  (define (service-port->servinfo port . pr)
    (let-optionals pr ((proto #f))
                   (and-let* ((s (getservent/port port proto)))
                     (servent->servinfo s))))

  ;; Return service information given a service name or port, and an
  ;; optional protocol name or number to restrict the search to.
  ;; Note: if the protocol-number->name lookup fails,
  ;; an error is thrown, as this was probably not intended.
  (define (service-information service . pr)
    (let-optionals pr ((proto #f))
                   (let ((proto (if (fixnum? proto)
                                    (or (protocol-number->name proto)
                                        (error 'service-information "illegal protocol number" proto))
                                    proto)))
                     (if (fixnum? service)
                         (service-port->servinfo service proto)
                         (begin
                           (##sys#check-string service 'service-information)
                           (service-name->servinfo service proto))))))
)   ; end module

;;; Tests
(cond-expand
 [testing
  (import hostinfo)
  (current-hostname)
  (host-information "www.call-with-current-continuation.org")
  (host-information '#u8(194 97 107 133))
  (host-information "194.97.107.133")
                                        ; =>  #,(hostinfo name: "www003.lifemedien.de" addresses: #(#u8(194 97 107 133))
                                        ;        aliases: #("www.call-with-current-continuation.org"))
  (ip->hostname '#u8(194 97 107 133)) ; "www003.lifemedien.de"
  (string->ip "0708::0901")  ;  #u8(7 8 0 0 0 0 0 0 0 0 0 0 0 0 9 1)
  (ip->string '#u8(127 0 0 1))        ;  "127.0.0.1"
  (hostinfo-aliases
   (hostname->hostinfo
    (ip->hostname (hostname->ip
                   (hostinfo-name
                    (host-information "www.call-with-current-continuation.org"))))))
                                        ; => #("www.call-with-current-continuation.org")

  (protocol-information 17) ; => #,(protoinfo name: "udp" number: 17 aliases: #("UDP"))
  (protoinfo-name (protocol-information 2)) ; => "igmp"
  (protoinfo-aliases (protocol-name->protoinfo
                      (protocol-number->name
                       (protoinfo-number
                        (protocol-information "ospf"))))) ; => #("OSPFIGP")
  (protocol-name->number "OSPFIGP") ; 89 (you can look up aliases, too)

  (servinfo-protocol (service-name->servinfo
                      (service-port->name
                       (servinfo-port (service-information "ssh"))))) ; => "udp" (yes, really)
  (service-information "ssh" "tcp") ; => #,(servinfo name: "ssh" port: 22 aliases: #() protocol: "tcp")
  (service-information "ssh" "tco")   ; => #f
  (service-information 512 "tcp") ; #,(servinfo name: "exec" port: 512 aliases: #() protocol: "tcp")
  (service-information 512 "udp") ; #,(servinfo name: "comsat" port: 512 aliases: #("biff") protocol: "udp")
  (service-information 512 17)        ; same as previous
  (service-information 512 170000)   ; Error: (service-information) illegal protocol number: 170000
  ] [else])
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Deleted hostinfo/hostinfo.setup version [94d320c0dc].

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(define libs
  (if (eq? (build-platform) 'msvc)
      "-lws2_32"
      "") )

(compile -s -O2 -d2 hostinfo.scm ,libs -j hostinfo)
(compile -s -O2 -d0 hostinfo.import.scm)
(install-extension
 'hostinfo 
 '("hostinfo.so" "hostinfo.import.so")
 '((version "1.4.1")))
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Modified launchmod.scm from [26d43d79a0] to [03e715c08b].

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	  ;; (db:test-remove-steps db run-id testname itemdat)
	  ;; now is also a good time to write the .testconfig file
	  (let* ((tconfig-fname   (conc work-area "/.testconfig"))
		 (tconfig-tmpfile (conc tconfig-fname ".tmp"))
		 (tconfig         (tests:get-testconfig test-name item-path tconfigreg #t force-create: #t)) ;; 'return-procs)))
		 (scripts (configf:get-section tconfig "scripts")))
	    ;; create .testconfig file
	    (configf:write-alist tconfig tconfig-tmpfile)

	    (move-file tconfig-tmpfile tconfig-fname #t)
	    (delete-file* ".final-status")

	    ;; extract scripts from testconfig and write them to files in test run dir
	    (for-each
	     (lambda (scriptdat)
	       (match scriptdat







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	  ;; (db:test-remove-steps db run-id testname itemdat)
	  ;; now is also a good time to write the .testconfig file
	  (let* ((tconfig-fname   (conc work-area "/.testconfig"))
		 (tconfig-tmpfile (conc tconfig-fname ".tmp"))
		 (tconfig         (tests:get-testconfig test-name item-path tconfigreg #t force-create: #t)) ;; 'return-procs)))
		 (scripts (configf:get-section tconfig "scripts")))
	    ;; create .testconfig file
	    (configf:write-alist tconfig tconfig-tmpfile #t) ;; the #t forces a check of the written data
	    (assert (file-exists? tconfig-tmpfile) "FATAL: We just wrote the dang file, how can it not exist?")
	    (move-file tconfig-tmpfile tconfig-fname #t)
	    (delete-file* ".final-status")

	    ;; extract scripts from testconfig and write them to files in test run dir
	    (for-each
	     (lambda (scriptdat)
	       (match scriptdat
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					(list 'target    mt_target)
					(list 'contour   contour)
					(list 'runtlim   (if run-time-limit (common:hms-string->seconds run-time-limit) #f))
					(list 'env-ovrd  (hash-table-ref/default *configdat* "env-override" '())) 
					(list 'set-vars  (if params (hash-table-ref/default params "-setvars" #f)))
					(list 'runname   runname)
					(list 'mt-bindir-path mt-bindir-path))))))))


      
      ;; clean out step records from previous run if they exist
      ;; (rmt:delete-test-step-records run-id test-id)
      ;; if the dir does not exist we may have a itempath where individual variables are a path, launch anyway
      (if (common:file-exists? work-area)
	  (change-directory work-area)) ;; so that log files from the launch process don't clutter the test dir
      (cond







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					(list 'target    mt_target)
					(list 'contour   contour)
					(list 'runtlim   (if run-time-limit (common:hms-string->seconds run-time-limit) #f))
					(list 'env-ovrd  (hash-table-ref/default *configdat* "env-override" '())) 
					(list 'set-vars  (if params (hash-table-ref/default params "-setvars" #f)))
					(list 'runname   runname)
					(list 'mt-bindir-path mt-bindir-path))))))))

      (setenv "MT_CMDINFO" cmdparms)  ;; setting this for use in nblauncher
      
      ;; clean out step records from previous run if they exist
      ;; (rmt:delete-test-step-records run-id test-id)
      ;; if the dir does not exist we may have a itempath where individual variables are a path, launch anyway
      (if (common:file-exists? work-area)
	  (change-directory work-area)) ;; so that log files from the launch process don't clutter the test dir
      (cond
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;; > 3 RUNNING with not test_dead do nothing (run should already be RUNNING/ na
;; > 0 RUNNING and test_dead then send KILLREQ ==> COMPLETED
;; 0 RUNNING ==> this is actually the first condition, should not get here

(define (runs:end-of-run-check run-id )
  (let* ((not-completed-cnt (rmt:get-not-completed-cnt run-id))  
	 (running-cnt (rmt:get-count-tests-running-for-run-id run-id))
	 (all-test-launched (rmt:get-var run-id (conc "lunch-complete-" run-id)))
	 (current-state (rmt:get-run-state run-id))
	 (current-status (rmt:get-run-status run-id)))
    ;;get-vars run-id to query metadata table to check if all completed. if all-test-launched = yes then only not-completed-cnt = 0 means everyting is completed if no entry found in the table do nothing 
    (debug:print 0 *default-log-port* "Running test cnt :" running-cnt)                      
    (rmt:set-state-status-and-roll-up-run  run-id current-state current-status)
    (runs:update-junit-test-reporter-xml run-id) 
    (cond 
     ((and all-test-launched (eq? not-completed-cnt 0) (equal? all-test-launched "yes" ))
      (if (and (equal? (rmt:get-var run-id (conc "end-of-run-" run-id)) "no") (common:simple-lock (conc "endOfRun" run-id)))
	  (begin
	    (debug:print 4 *default-log-port* "look for  post hook. currseconds: " (current-seconds) " EOR " (rmt:get-var run-id (conc "end-of-run-" run-id)))
	    (debug:print 0 *default-log-port* "End of Run Detected.")
	    (rmt:set-var run-id (conc "end-of-run-" run-id) "yes")
					;(thread-sleep! 10)
	    (runs:run-post-hook run-id)
	    (debug:print 4 *default-log-port* "currseconds: " (current-seconds)" eor: " (rmt:get-var run-id (conc "end-of-run-" run-id)))
	    (common:simple-unlock (conc "endOfRun" run-id)))
	  (debug:print 0 *default-log-port* "End of Run Detected but not running post hook. This should happen when eor is set to yes. This will happen only when 2 tests exit at smae time. eor= " (rmt:get-var run-id (conc "end-of-run-" run-id)))))
     ((> running-cnt 3) 
      (debug:print 0 *default-log-port* "There are " running-cnt " tests running." ))
     ((> running-cnt 0)
      (debug:print 0 *default-log-port* "running cnt > 0 but <= 3 kill-running-tests-if-dead" )
      (let ((kill-cnt (launch:kill-tests-if-dead run-id)))
	(if (and all-test-launched  (equal? all-test-launched "yes") (eq? kill-cnt running-cnt))
	    (runs:end-of-run-check run-id)))) ;;todo







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;; > 3 RUNNING with not test_dead do nothing (run should already be RUNNING/ na
;; > 0 RUNNING and test_dead then send KILLREQ ==> COMPLETED
;; 0 RUNNING ==> this is actually the first condition, should not get here

(define (runs:end-of-run-check run-id )
  (let* ((not-completed-cnt (rmt:get-not-completed-cnt run-id))  
	 (running-cnt (rmt:get-count-tests-running-for-run-id run-id))
	 (all-test-launched (rmt:get-var run-id (conc "launch-complete-" run-id)))
	 (current-state (rmt:get-run-state run-id))
	 (current-status (rmt:get-run-status run-id)))
    ;;get-vars run-id to query metadata table to check if all completed. if all-test-launched = yes then only not-completed-cnt = 0 means everyting is completed if no entry found in the table do nothing 
    (debug:print 0 *default-log-port* "Running test cnt :" running-cnt)                      
    (rmt:set-state-status-and-roll-up-run  run-id current-state current-status)
    (runs:update-junit-test-reporter-xml run-id) 
    (cond 
     ((and all-test-launched (eq? not-completed-cnt 0) (equal? all-test-launched "yes" ))
      (if (and (equal? (rmt:get-var run-id (conc "end-of-run-" run-id)) "no") (common:simple-lock (conc "endOfRun" run-id)))
	  (begin
	    (debug:print 4 *default-log-port* "look for  post hook. currseconds: " (current-seconds) " EOR " (rmt:get-var run-id (conc "end-of-run-" run-id)))
	    (debug:print 0 *default-log-port* "End of Run Detected.")
	    (rmt:set-var run-id (conc "end-of-run-" run-id) "yes")
					;(thread-sleep! 10)
	    (runs:run-post-hook run-id)
	    (debug:print 4 *default-log-port* "currseconds: " (current-seconds)" eor: " (rmt:get-var run-id (conc "end-of-run-" run-id)))
	    (common:simple-unlock (conc "endOfRun" run-id)))
	  (debug:print 0 *default-log-port* "End of Run Detected but not running post hook. This should happen when eor is set to yes. This will happen only when 2 tests exit at same time. eor= " (rmt:get-var run-id (conc "end-of-run-" run-id)))))
     ((> running-cnt 3) 
      (debug:print 0 *default-log-port* "There are " running-cnt " tests running." ))
     ((> running-cnt 0)
      (debug:print 0 *default-log-port* "running cnt > 0 but <= 3 kill-running-tests-if-dead" )
      (let ((kill-cnt (launch:kill-tests-if-dead run-id)))
	(if (and all-test-launched  (equal? all-test-launched "yes") (eq? kill-cnt running-cnt))
	    (runs:end-of-run-check run-id)))) ;;todo
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		      (if (not (null? tal))
			  (loop (car tal) (cdr tal)))))))))))

(define (runs:find-and-mark-incomplete-and-check-end-of-run run-id ovr-deadtime)
  (rmt:find-and-mark-incomplete run-id ovr-deadtime)
  (runs:end-of-run-check run-id))



(define (launch:kill-tests-if-dead run-id)
  (let* ((running-tests (rmt:get-tests-for-run run-id "%" `("RUNNING" "LAUNCHED" "REMOTEHOSTSTART") `() #f #f #f #f #f #f #f #f)))
       (let loop ((running-test (car running-tests))
			     (tal    (cdr running-tests))
			     (kill-cnt 0))
		       (let* ((test-name (vector-ref running-test 2))
                 (item-path (vector-ref running-test 11))
								 (test-id (vector-ref running-test 0))
                 (host (vector-ref running-test 6))
                 (pid  (rmt:test-get-top-process-pid run-id test-id))   
                 (event-time (vector-ref running-test 5))
                 (duration (vector-ref running-test 12))
                 (flag 0)   
                 (curr-time (current-seconds)))

       (if (and (< (+ event-time duration 600) curr-time) (not (launch:is-test-alive host pid))) ;;test has not updated duration in last 10 min then likely its not running but confirm before marking it as killed
           (begin    
			       	(debug:print 0 *default-log-port* "test " test-name "/" item-path " needs to be killed")
              (set! flag 1) 
              (rmt:set-state-status-and-roll-up-items run-id test-name item-path "KILLREQ" "n/a" #f)))
               (if (not (null? tal))
				  (loop (car tal) (cdr tal) (+ kill-cnt flag))
                 (+ kill-cnt flag))))))


(define (runs:run-post-hook run-id)
    (let* ((run-post-hook   (configf:lookup *configdat* "runs" "post-hook"))
           (existing-tests (if run-post-hook
                               (rmt:get-tests-for-run run-id "%" '() '() ;; run-id testpatt states statuses
                                                      #f #f ;; offset limit







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		      (if (not (null? tal))
			  (loop (car tal) (cdr tal)))))))))))

(define (runs:find-and-mark-incomplete-and-check-end-of-run run-id ovr-deadtime)
  (rmt:find-and-mark-incomplete run-id ovr-deadtime)
  (runs:end-of-run-check run-id))

;; only called if there are more than zero running tests

(define (launch:kill-tests-if-dead run-id)
  (let* ((running-tests (rmt:get-tests-for-run run-id "%" `("RUNNING" "LAUNCHED" "REMOTEHOSTSTART") `() #f #f #f #f #f #f #f #f)))
    (let loop ((running-test (car running-tests))
	       (tal          (cdr running-tests))
	       (kill-cnt     0))
      (let* ((test-name  (vector-ref running-test 2))
             (item-path  (vector-ref running-test 11))
	     (test-id    (vector-ref running-test 0))
             (host       (vector-ref running-test 6))
             (pid        (rmt:test-get-top-process-pid run-id test-id))   
             (event-time (vector-ref running-test 5))
             (duration   (vector-ref running-test 12))
             (flag       0)   
             (curr-time  (current-seconds)))
	(if (and (< (+ event-time duration 600) curr-time)
		 (not (launch:is-test-alive host pid))) ;;test has not updated duration in last 10 min then likely its not running but confirm before marking it as killed
            (begin    
	      (debug:print 0 *default-log-port* "test " test-name "/" item-path " needs to be killed")
              (set! flag 1) 
              (rmt:set-state-status-and-roll-up-items run-id test-name item-path "KILLREQ" "n/a" #f)))
        (if (not (null? tal))
	    (loop (car tal) (cdr tal) (+ kill-cnt flag))
            (+ kill-cnt flag))))))


(define (runs:run-post-hook run-id)
    (let* ((run-post-hook   (configf:lookup *configdat* "runs" "post-hook"))
           (existing-tests (if run-post-hook
                               (rmt:get-tests-for-run run-id "%" '() '() ;; run-id testpatt states statuses
                                                      #f #f ;; offset limit

Modified megatest.scm from [c1c08ee586] to [17b2f9374a].

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;;

(declare (uses dbi))
(declare (uses pkts))
(declare (uses stml2))
(declare (uses cookie))
(declare (uses csv-xml))
(declare (uses hostinfo))

(declare (uses adjutant))
(declare (uses archivemod))
(declare (uses apimod))
(declare (uses autoload))
(declare (uses bigmod))
(declare (uses commonmod))







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;;

(declare (uses dbi))
(declare (uses pkts))
(declare (uses stml2))
(declare (uses cookie))
(declare (uses csv-xml))
;; (declare (uses hostinfo))

(declare (uses adjutant))
(declare (uses archivemod))
(declare (uses apimod))
(declare (uses autoload))
(declare (uses bigmod))
(declare (uses commonmod))
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(declare (uses mtver))
(declare (uses mutils))
(declare (uses processmod))
(declare (uses rmtmod))
(declare (uses runsmod))
(declare (uses servermod))
(declare (uses testsmod))


;; needed for configf scripts, scheme etc.
;; (declare (uses apimod.import))
;; (declare (uses debugprint.import))
;; (declare (uses mtargs.import))
;; (declare (uses commonmod.import))
;; (declare (uses configfmod.import))
;; (declare (uses bigmod.import))
;; (declare (uses dbmod.import))
;; (declare (uses rmtmod.import))
;; (declare (uses servermod.import))
;; (declare (uses launchmod.import))

;; (include "call-with-environment-variables/call-with-environment-variables.scm")

(module megatest-main
	*

  (import scheme
	  chicken.base
	  chicken.bitwise
	  chicken.condition
	  ;; chicken.csi







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(declare (uses mtver))
(declare (uses mutils))
(declare (uses processmod))
(declare (uses rmtmod))
(declare (uses runsmod))
(declare (uses servermod))
(declare (uses testsmod))
(declare (uses dbmgrmod))

;; needed for configf scripts, scheme etc.
;; (declare (uses apimod.import))
;; (declare (uses debugprint.import))
;; (declare (uses mtargs.import))
;; (declare (uses commonmod.import))
;; (declare (uses configfmod.import))
;; (declare (uses bigmod.import))
;; (declare (uses dbmod.import))
;; (declare (uses rmtmod.import))
;; (declare (uses servermod.import))
;; (declare (uses launchmod.import))

;; (include "call-with-environment-variables/call-with-environment-variables.scm")

(module megatest
	*

  (import scheme
	  chicken.base
	  chicken.bitwise
	  chicken.condition
	  ;; chicken.csi
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	  srfi-98
	  srfi-69

	  ;; local modules
	  autoload
	  adjutant
	  csv-xml
	  hostinfo
	  mtver
	  mutils
	  cookie
	  csv-xml
	  ducttape-lib
	  (prefix mtargs args:)
	  pkts







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	  srfi-98
	  srfi-69

	  ;; local modules
	  autoload
	  adjutant
	  csv-xml
	  ;; hostinfo
	  mtver
	  mutils
	  cookie
	  csv-xml
	  ducttape-lib
	  (prefix mtargs args:)
	  pkts
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	  launchmod
	  processmod
	  rmtmod
	  runsmod
	  servermod
	  tasksmod
	  testsmod

	  

	  )
	










;; fake out readline usage of toplevel-command
(define (toplevel-command . a) #f)

(define *db* #f) ;; this is only for the repl, do not use in general!!!!

;; (include "common_records.scm")
;; (include "key_records.scm")
;; (include "db_records.scm")
(include "run_records.scm")
;; (include "test_records.scm")

;; (include "common.scm")
(include "db.scm")
;; (include "server.scm")
(include "tests.scm")
(include "genexample.scm")
(include "tdb.scm")
(include "env.scm")
(include "diff-report.scm")
(include "ods.scm")

(define *usage-log-file* #f)    ;; put path to file for logging usage in this var in the ~/.megatestrc file
(define *usage-use-seconds* #t) ;; for Epoc seconds in usage logging change this to #t in ~/.megatestrc file



;;======================================================================
;; Test commands (i.e. for use inside tests)
;;======================================================================

(define (megatest:step step state status logfile msg)
  (if (not (get-environment-variable "MT_CMDINFO"))







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	  launchmod
	  processmod
	  rmtmod
	  runsmod
	  servermod
	  tasksmod
	  testsmod
	  dbmgrmod
	  
	  ulex
	  )

;;   ;; ulex parameters
;;   (work-method 'direct)
;;   (return-method 'direct)
  
  ;; ulex parameters
  ;; (work-method   'mailbox)
  ;; (return-method 'mailbox)

(my-with-lock common:with-simple-file-lock)
  
;; fake out readline usage of toplevel-command
(define (toplevel-command . a) #f)
(define *didsomething* #f)  
(define *db* #f) ;; this is only for the repl, do not use in general!!!!

;; (include "common_records.scm")
;; (include "key_records.scm")
;; (include "db_records.scm")
(include "run_records.scm")
;; (include "test_records.scm")

;; (include "common.scm")
(include "db.scm")
;; (include "server.scm")
(include "tests.scm")
(include "genexample.scm")
(include "tdb.scm")
(include "env.scm")
(include "diff-report.scm")
(include "ods.scm")

(define *usage-log-file* #f)    ;; put path to file for logging usage in this var in the ~/.megatestrc file
(define *usage-use-seconds* #t) ;; for Epoc seconds in usage logging change this to #t in ~/.megatestrc file

(set! *toppath* (get-environment-variable "PWD"))

;;======================================================================
;; Test commands (i.e. for use inside tests)
;;======================================================================

(define (megatest:step step state status logfile msg)
  (if (not (get-environment-variable "MT_CMDINFO"))
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     			 status: #f
     			 new-state-status: "NOT_STARTED,n/a")))
  (let* ((config-reruns      (let ((x (configf:lookup *configdat* "setup" "reruns")))
     			       (if x (string->number x) #f)))
     	 (rerun-cnt (if config-reruns
     			config-reruns
     			1)))
    
    (runs:run-tests target
     		    runname
     		    #f ;; (common:args-get-testpatt #f)
     		    ;; (or (args:get-arg "-testpatt")
     		    ;;     "%")
     		    (bdat-user *bdat*)
     		    args:arg-hash







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     			 status: #f
     			 new-state-status: "NOT_STARTED,n/a")))
  (let* ((config-reruns      (let ((x (configf:lookup *configdat* "setup" "reruns")))
     			       (if x (string->number x) #f)))
     	 (rerun-cnt (if config-reruns
     			config-reruns
     			1)))
    (debug:print 0 *default-log-port* "handle-run-requests *toppath* = " *toppath*) 
    (runs:run-tests target
     		    runname
     		    #f ;; (common:args-get-testpatt #f)
     		    ;; (or (args:get-arg "-testpatt")
     		    ;;     "%")
     		    (bdat-user *bdat*)
     		    args:arg-hash
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     			 newlogf)
     		       logpath-in)))
     (if (not (directory-exists? log-dir))
	 (system (conc "mkdir -p " log-dir)))
     (open-output-file logpath))
   (exn ()
	(debug:print-error 0 *default-log-port* "Could not open log file for write: "logpath-in)
	(define *didsomething* #t)  
	(exit 1))))

;; Disabled help items
;;  -rollup                 : (currently disabled) fill run (set by :runname)  with latest test(s)
;;                            from prior runs with same keys
;;  -daemonize              : fork into background and disconnect from stdin/out








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     			 newlogf)
     		       logpath-in)))
     (if (not (directory-exists? log-dir))
	 (system (conc "mkdir -p " log-dir)))
     (open-output-file logpath))
   (exn ()
	(debug:print-error 0 *default-log-port* "Could not open log file for write: "logpath-in)
	(set! *didsomething* #t)
	(exit 1))))

;; Disabled help items
;;  -rollup                 : (currently disabled) fill run (set by :runname)  with latest test(s)
;;                            from prior runs with same keys
;;  -daemonize              : fork into background and disconnect from stdin/out

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Called as " (string-intersperse (argv) " ") "
Version " megatest-version ", built from " megatest-fossil-hash ))
     
(define (main)
  (make-and-init-bigdata)

  
  ;; set up the functions in http transport
  (hash-table-set! *http-functions* 'api:process-request          api:process-request)
  (hash-table-set! *http-functions* 'http-transport:main-page     http-transport:main-page)
  (hash-table-set! *http-functions* 'http-transport:show-jquery   http-transport:show-jquery)
  (hash-table-set! *http-functions* 'http-transport:html-test-log http-transport:html-test-log)
  (hash-table-set! *http-functions* 'http-transport:html-dboard   http-transport:html-dboard)
  
;; load the ~/.megatestrc file, put (use trace)(trace-call-sites #t)(trace function-you-want-to-trace) in this file
;;
(let ((debugcontrolf (conc (get-environment-variable "HOME") "/.megatestrc")))
  (if (common:file-exists? debugcontrolf)
      (load debugcontrolf)))

;; usage logging, careful with this, it is not designed to deal with all real world challenges!







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Called as " (string-intersperse (argv) " ") "
Version " megatest-version ", built from " megatest-fossil-hash ))
     
(define (main)
  (make-and-init-bigdata)









;; load the ~/.megatestrc file, put (use trace)(trace-call-sites #t)(trace function-you-want-to-trace) in this file
;;
(let ((debugcontrolf (conc (get-environment-variable "HOME") "/.megatestrc")))
  (if (common:file-exists? debugcontrolf)
      (load debugcontrolf)))

;; usage logging, careful with this, it is not designed to deal with all real world challenges!
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     ;; before doing anything else change to the start-dir if provided
     ;;
     (if (args:get-arg "-start-dir")
         (if (common:file-exists? (args:get-arg "-start-dir"))
             (let ((fullpath (common:real-path (args:get-arg "-start-dir"))))
               (set-environment-variable! "PWD" fullpath)
               (change-directory fullpath))

     	(begin
     	  (debug:print-error 0 *default-log-port* "non-existant start dir " (args:get-arg "-start-dir") " specified, exiting.")
     	  (exit 1))))
     




     ;; immediately set MT_TARGET if -reqtarg or -target are available
     ;;
     (let ((targ (or (args:get-arg "-reqtarg")(args:get-arg "-target"))))


       (if targ (set-environment-variable! "MT_TARGET" targ)))




     
     ;; The watchdog is to keep an eye on things like db sync etc.
     ;;
;; (init-watchdog)
  
;;      (define (debug:debug-mode n)
;;        (cond







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     ;; before doing anything else change to the start-dir if provided
     ;;
     (if (args:get-arg "-start-dir")
         (if (common:file-exists? (args:get-arg "-start-dir"))
             (let ((fullpath (common:real-path (args:get-arg "-start-dir"))))
               (set-environment-variable! "PWD" fullpath)
               (change-directory fullpath)
               (set! *toppath* fullpath))
     	(begin
     	  (debug:print-error 0 *default-log-port* "non-existant start dir " (args:get-arg "-start-dir") " specified, exiting.")
     	  (exit 1))))
    
     (set! *toppath* (get-environment-variable "PWD"))
     


     ;; immediately set MT_TARGET if -reqtarg or -target are available
     ;;
     (let ((targ (or (args:get-arg "-reqtarg")(args:get-arg "-target"))))
       (if targ 
        (begin
          (set-environment-variable! "MT_TARGET" targ)
          (mytarget targ)
        )
        )
       )
     
     ;; The watchdog is to keep an eye on things like db sync etc.
     ;;
;; (init-watchdog)
  
;;      (define (debug:debug-mode n)
;;        (cond
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           (exit)))
     
     (if (args:get-arg "-version")
         (begin
           (print (common:version-signature)) ;; (print megatest-version)
           (exit)))
     
     (define *didsomething* #f)
     
     ;; Overall exit handling setup immediately
     ;;
     (if (or (args:get-arg "-process-reap"))
             ;; (args:get-arg "-runtests")
     	;; (args:get-arg "-execute")
     	;; (args:get-arg "-remove-runs")
     	;; (args:get-arg "-runstep"))







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           (exit)))
     
     (if (args:get-arg "-version")
         (begin
           (print (common:version-signature)) ;; (print megatest-version)
           (exit)))
     


     ;; Overall exit handling setup immediately
     ;;
     (if (or (args:get-arg "-process-reap"))
             ;; (args:get-arg "-runtests")
     	;; (args:get-arg "-execute")
     	;; (args:get-arg "-remove-runs")
     	;; (args:get-arg "-runstep"))
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     				       sheetname sectionname varname val)))
     		   (sqlite3:finalize! db)))
     		(else
     		 (pp data))))))
           (if out-file (close-output-port out-port))
           (exit) ;; yes, bending the rules here - need to exit since this is a utility
           ))
     


     (if (args:get-arg "-ping")
         (let* ((server-id     (string->number (args:get-arg "-ping"))) ;; extract run-id (i.e. no ":"
     	   (host:port     (args:get-arg "-ping")))
           (server:ping (or server-id host:port) #f do-exit: #t)))
     
     ;;======================================================================
     ;; Capture, save and manipulate environments
     ;;======================================================================
     
     ;; NOTE: Keep these above the section where the server or client code is setup
     







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     				       sheetname sectionname varname val)))
     		   (sqlite3:finalize! db)))
     		(else
     		 (pp data))))))
           (if out-file (close-output-port out-port))
           (exit) ;; yes, bending the rules here - need to exit since this is a utility
           ))

  ;; disabled for now
  
     #;(if (args:get-arg "-ping")
         (let* ((server-id     (string->number (args:get-arg "-ping"))) ;; extract run-id (i.e. no ":"
     	   (host:port     (args:get-arg "-ping")))
           (server-ready? (or server-id host:port) #f do-exit: #t)))
     
     ;;======================================================================
     ;; Capture, save and manipulate environments
     ;;======================================================================
     
     ;; NOTE: Keep these above the section where the server or client code is setup
     
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         (bdat-time-to-exit-set! *bdat* #t)
         )
     ;;(debug:print-info 13 *default-log-port* "thread-join! watchdog")
     
     ;; join the watchdog thread if it has been thread-start!ed  (it may not have been started in the case of a server that never enters running state)
     ;;   (symbols returned by thread-state: created ready running blocked suspended sleeping terminated dead)
     ;; TODO: for multiple areas, we will have multiple watchdogs; and multiple threads to manage
     (let* ((watchdog (bdat-watchdog *bdat*)))
       (if (thread? watchdog)
	   (case (thread-state watchdog)
	     ((ready running blocked sleeping terminated dead)
	      (thread-join! watchdog)))))
     
     (bdat-time-to-exit-set! *bdat* #t)
     
     (if (not (eq? *globalexitstatus* 0))
         (if (or (args:get-arg "-run")(args:get-arg "-runtests")(args:get-arg "-runall"))
             (begin
	       (debug:print 0 *default-log-port* "NOTE: Subprocesses with non-zero exit code detected: " *globalexitstatus*)
	       (exit 0))
             (case *globalexitstatus*
	       ((0)(exit 0))
	       ((1)(exit 1))
	       ((2)(exit 2))
	       (else (exit 3)))))
     )



)




(import megatest-main)
(import commonmod)
(main)









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         (bdat-time-to-exit-set! *bdat* #t)
         )
     ;;(debug:print-info 13 *default-log-port* "thread-join! watchdog")
     
     ;; join the watchdog thread if it has been thread-start!ed  (it may not have been started in the case of a server that never enters running state)
     ;;   (symbols returned by thread-state: created ready running blocked suspended sleeping terminated dead)
     ;; TODO: for multiple areas, we will have multiple watchdogs; and multiple threads to manage
     #;(let* ((watchdog (bdat-watchdog *bdat*)))
       (if (thread? watchdog)
	   (case (thread-state watchdog)
	     ((ready running blocked sleeping terminated dead)
	      (thread-join! watchdog)))))
     
     (bdat-time-to-exit-set! *bdat* #t)
     
     (if (not (eq? *globalexitstatus* 0))
         (if (or (args:get-arg "-run")(args:get-arg "-runtests")(args:get-arg "-runall"))
             (begin
	       (debug:print 0 *default-log-port* "NOTE: Subprocesses with non-zero exit code detected: " *globalexitstatus*)
	       (exit 0))
             (case *globalexitstatus*
	       ((0)(exit 0))
	       ((1)(exit 1))
	       ((2)(exit 2))
	       (else (exit 3)))))
     )

;; (import megatest-main commonmod)
;; (import srfi-18)

(thread-join!
 (thread-start!
  (make-thread main)))




)

Modified mtargs/mtargs.scm from [40b7a0d6eb] to [30504e2303].

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  (if (> (length args) 0)
      (apply print "ERROR: " args))
  (if (string? help)
      (print help)
      (print "Usage: " (car (argv)) " ... "))
  (exit 0))











(define (get-args args params switches arg-hash num-needed)
  (let* ((numtargs (length args))
	 (adj-num-needed (if num-needed (+ num-needed 2) #f)))
    (if (< numtargs (if adj-num-needed adj-num-needed 2))
	(if (>= num-needed 1)
	    (usage "No arguments provided")
	    '())







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  (if (> (length args) 0)
      (apply print "ERROR: " args))
  (if (string? help)
      (print help)
      (print "Usage: " (car (argv)) " ... "))
  (exit 0))

 ;; one-of args defined
(define (any-defined? . param)
  (let ((res #f))
    (for-each 
     (lambda (arg)
       (if (get-arg arg)(set! res #t)))
     param)
    res))

;; args: 
(define (get-args args params switches arg-hash num-needed)
  (let* ((numtargs (length args))
	 (adj-num-needed (if num-needed (+ num-needed 2) #f)))
    (if (< numtargs (if adj-num-needed adj-num-needed 2))
	(if (>= num-needed 1)
	    (usage "No arguments provided")
	    '())

Added mtserve.scm version [8e967876ca].


























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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;; Copyright 2006-2017, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.
;;

;; (declare (uses dbi))
(declare (uses pkts))
;; (declare (uses stml2))
;; (declare (uses cookie))
;; (declare (uses csv-xml))
;; (declare (uses hostinfo))

(declare (uses adjutant))
;; (declare (uses archivemod))
(declare (uses apimod))
;; (declare (uses autoload))
;; (declare (uses bigmod))
(declare (uses commonmod))
(declare (uses configfmod))
(declare (uses dbmod))
(declare (uses debugprint))
;; (declare (uses ducttape-lib))
;; (declare (uses ezstepsmod))
(declare (uses launchmod))
(declare (uses mtargs))
(declare (uses mtver))
;; (declare (uses mutils))
(declare (uses processmod))
(declare (uses rmtmod))
;; (declare (uses runsmod))
;; (declare (uses servermod))
;; (declare (uses testsmod))
(declare (uses dbmgrmod))

;; needed for configf scripts, scheme etc.
;; (declare (uses apimod.import))
;; (declare (uses debugprint.import))
;; (declare (uses mtargs.import))
;; (declare (uses commonmod.import))
;; (declare (uses configfmod.import))
;; (declare (uses bigmod.import))
;; (declare (uses dbmod.import))
;; (declare (uses rmtmod.import))
;; (declare (uses servermod.import))
;; (declare (uses launchmod.import))

;; (include "call-with-environment-variables/call-with-environment-variables.scm")

(module mtserve
	*

  (import scheme

	  chicken.base
;;	  chicken.bitwise
;;	  chicken.condition
;;	  ;; chicken.csi
;;	  chicken.eval
;;	  chicken.file
;;	  chicken.file.posix
;;	  chicken.format
;;	  chicken.io
;;	  chicken.irregex
;;	  chicken.pathname
;;	  chicken.port
;;	  chicken.pretty-print
;;	  chicken.process
	  chicken.process-context
;;	  chicken.process-context.posix
;;	  chicken.process.signal
;;	  chicken.random
;;	  chicken.repl
;;	  chicken.sort
	  chicken.string
;;	  chicken.tcp
;;	  chicken.time
;;	  chicken.time.posix
;;	  
;;	  (prefix base64 base64:)
;;	  (prefix sqlite3 sqlite3:)
;;	  (prefix sxml-modifications sxml-)
;;	  address-info
;;	  csv-abnf
;;	  directory-utils
;;	  fmt
;;	  format
;;	  http-client
;;	  intarweb
;;	  json
;;	  linenoise
;;	  matchable
;;	  md5
;;	  message-digest
;;	  queues
;;	  regex
;;	  regex-case
;;	  s11n
;;	  sparse-vectors
;;	  spiffy
;;	  spiffy-directory-listing
;;	  spiffy-request-vars
;;	  sql-de-lite
;;	  stack
;;	  sxml-modifications
;;	  sxml-serializer
;;	  sxml-transforms
;;	  system-information
;;	  typed-records
;;	  uri-common
;;	  z3
;;	  
;;	  srfi-1
;;	  srfi-4
	  srfi-18
;;	  srfi-13
;;	  srfi-98
;;	  srfi-69
;;
;;	  ;; local modules
;;	  autoload
;;	  adjutant
;;	  csv-xml
;;	  ;; hostinfo
;;	  mtver
;;	  mutils
;;	  cookie
;;	  csv-xml
;;	  ducttape-lib
	  (prefix mtargs args:)
;;	  pkts
;;	  stml2
;;	  (prefix dbi dbi:)
;;
;;	  apimod
;;	  archivemod
;;	  bigmod
	  commonmod
;;	  configfmod
;;	  dbmod
	  debugprint
;;	  ezstepsmod
	  launchmod
;;	  processmod
;;	  rmtmod
;;	  runsmod
;;	  servermod
;;	  tasksmod
;;	  testsmod
	  dbmgrmod
;;	  
;;	  ulex
	  )

;;   ;; ulex parameters
;;   (work-method 'direct)
;;   (return-method 'direct)
  
  ;; ulex parameters
  ;; (work-method   'mailbox)
  ;; (return-method 'mailbox)

;; (my-with-lock common:with-simple-file-lock)
;;   
;; ;; fake out readline usage of toplevel-command
;; (define (toplevel-command . a) #f)
;; (define *didsomething* #f)  
;; (define *db* #f) ;; this is only for the repl, do not use in general!!!!
;; 
;; ;; (include "common_records.scm")
;; ;; (include "key_records.scm")
;; ;; (include "db_records.scm")
;; (include "run_records.scm")
;; ;; (include "test_records.scm")
;; 
;; ;; (include "common.scm")
;; (include "db.scm")
;; ;; (include "server.scm")
;; (include "tests.scm")
;; (include "genexample.scm")
;; (include "tdb.scm")
;; (include "env.scm")
;; (include "diff-report.scm")
;; (include "ods.scm")
;; 

  ;; process args
  (define remargs (args:get-args 
      		   (argv)
      		   (list  ;; "-runtests"  ;; run a specific test
      			  ;; "-config"    ;; override the config file name
      			  ;; "-append-config"
      			  ;; "-execute"   ;; run the command encoded in the base64 parameter
      			  ;; "-step"
      			  ;; "-target"
      			  ;; "-reqtarg"
      			  ;; ":runname"
      			  ;; "-runname"
      			  ;; ":state"  
      			  ;; "-state"
      			  ;; ":status"
      			  ;; "-status"
      			  ;; "-list-runs"
 			  ;; "-testdata-csv"
      			  ;; "-testpatt"
 			  ;; "--modepatt"
 			  ;; "-modepatt"
 			  ;; "-tagexpr"
      			  ;; "-itempatt"
      			  ;; "-setlog"
      			  ;; "-set-toplog"
      			  ;; "-runstep"
      			  ;; "-logpro"
      			  ;; "-m"
      			  ;; "-rerun"
			  ;; 
      			  ;; "-days"
      			  ;; "-rename-run"
      			  ;; "-to"
      			  ;; "-dest"
 			  ;; "-source" 
 			  ;; "-time-stamp" 
      			  ;; ;; values and messages
      			  ;; ":category"
      			  ;; ":variable"
      			  ;; ":value"
      			  ;; ":expected"
      			  ;; ":tol"
      			  ;; ":units"
			  ;; 
      			  ;; ;; misc
      			  ;; "-start-dir"
 			  ;; "-run-patt"
 			  ;; "-target-patt"   
      			  ;; "-contour"
 			  ;; "-area-tag"  
 			  ;; "-area"  
      			  ;; "-run-tag"
      			  "-server"
 			  "-db"            ;; file name for setting up a server
      			  ;; "-adjutant"
      			  ;; "-transport"
      			  ;; "-port"
      			  ;; "-extract-ods"
      			  ;; "-pathmod"
      			  ;; "-env2file"
      			  ;; "-envcap"
      			  ;; "-envdelta"
      			  ;; "-setvars"
      			  ;; "-set-state-status"
 			  ;; 
 			  ;; ;; move runs stuff here
 			  ;; "-remove-keep"           
      			  ;; "-set-run-status"
      			  ;; "-age"
			  ;; 
      			  ;; ;; archive 
      			  ;; "-archive"
      			  ;; "-actions"
      			  ;; "-precmd"
      			  ;; "-include"
      			  ;; "-exclude-rx"
      			  ;; "-exclude-rx-from"
      			  ;; 
      			  "-debug" ;; for *verbosity* > 2
      			  ;; "-debug-noprop"
      			  ;; "-create-test"
      			  ;; "-override-timeout"
      			  ;; "-test-files"  ;; -test-paths is for listing all
      			  ;; "-load"        ;; load and exectute a scheme file
      			  ;; "-section"
      			  ;; "-var"
      			  ;; "-dumpmode"
      			  ;; "-run-id"
      			  ;; "-ping"
      			  ;; "-refdb2dat"
      			  ;; "-o"
      			  ;; "-log"
 			  ;; "-autolog"
 			  ;; "-sync-log"
      			  ;; "-since"
      			  ;; "-fields"
      			  ;; "-recover-test" ;; run-id,test-id - used internally to recover a test stuck in RUNNING state
      			  ;; "-sort"
      			  ;; "-target-db"
      			  ;; "-source-db"
      			  ;; "-prefix-target"
			  ;; 
 			  ;; "-src-target"
 			  ;; "-src-runname"
 			  ;; "-diff-email"
      			  ;; "-sync-to"			
      			  ;; "-pgsync"
      			  ;; "-kill-wait"    ;; wait this long before removing test (default is 10 sec)
 			  ;; "-diff-html"
			  ;; 
      			  ;; ;; wizards, area capture, setup new ...
      			  ;; "-extract-skeleton"
      			  )
       		   (list  "-h" "-help" "--help"
      			  ;; "-manual"
      			  "-version"
      		          ;; "-force"
      		          ;; "-xterm"
      		          ;; "-showkeys"
      		          ;; "-show-keys"
      		          ;; "-test-status"
      			  ;; "-set-values"
      			  ;; "-load-test-data"
      			  ;; "-summarize-items"
      		          ;; "-gui"
      			  ;; "-daemonize"
      			  ;; "-preclean"
      			  ;; "-rerun-clean"
      			  ;; "-rerun-all"
      			  ;; "-clean-cache"
      			  ;; "-no-cache"
      			  ;; "-cache-db"
      			  ;; "-cp-eventtime-to-publishtime"
                          ;; "-use-db-cache"
                          ;; "-prepend-contour"
			  ;; 
			  ;; 
      			  ;; ;; misc
      			  ;; "-repl"
      			  ;; "-lock"
      			  ;; "-unlock"
      			  ;; "-list-servers"
      			  ;; "-kill-servers"
 			  ;; "-run-wait"      ;; wait on a run to complete (i.e. no RUNNING)
      			  ;; "-one-pass"      ;;
      			  ;; "-local"         ;; run some commands using local db access
      			  ;; "-generate-html"
      			  ;; "-generate-html-structure" 
      			  ;; "-list-run-time"
                          ;; "-list-test-time"
      			  ;; 
      			  ;; ;; misc queries
      			  ;; "-list-disks"
      			  ;; "-list-targets"
      			  ;; "-list-db-targets"
      			  ;; "-show-runconfig"
      			  ;; "-show-config"
      			  ;; "-show-cmdinfo"
      			  ;; "-get-run-status"
      			  ;; "-list-waivers"
			  ;; 
      			  ;; ;; queries
      			  ;; "-test-paths" ;; get path(s) to a test, ordered by youngest first
			  ;; 
      			  ;; "-runall"    ;; run all tests, respects -testpatt, defaults to %
      			  ;; "-run"       ;; alias for -runall
      			  ;; "-remove-runs"
                          ;; "-kill-runs"
                          ;; "-kill-rerun"
                          ;; "-keep-records" ;; use with -remove-runs to remove only the run data
      			  ;; "-rebuild-db"
      			  ;; "-cleanup-db"
      			  ;; "-rollup"
      			  ;; "-update-meta"
      			  ;; "-create-megatest-area"
      			  ;; "-mark-incompletes"
			  ;; 
      			  ;; "-convert-to-norm"
      			  ;; "-convert-to-old"
      			  ;; "-import-megatest.db"
      			  ;; "-sync-to-megatest.db"
 			  ;; "-sync-brute-force"
      			  ;; "-logging"
      			  ;; "-v" ;; verbose 2, more than normal (normal is 1)
      			  ;; "-q" ;; quiet 0, errors/warnings only
			  ;; 
                          ;; "-diff-rep"
			  ;; 
      			  ;; "-syscheck"
      			  ;; "-obfuscate"
      			  ;; junk placeholder
      			  ;; "-:p"
      			  
                          )
      		   args:arg-hash
      		   0))
  
  ;; Add args that use remargs here
  ;;
  (if (not (null? remargs))
      (debug:print-error 0 *default-log-port* "Unrecognised arguments: " (string-intersperse (if (list? remargs) remargs (argv))  " ")))
  
  ;; load the ~/.megatestrc file, put (use trace)(trace-call-sites #t)(trace function-you-want-to-trace) in this file
  ;;
  (let ((debugcontrolf (conc (get-environment-variable "HOME") "/.mtserverc")))
    (if (common:file-exists? debugcontrolf)
	(load debugcontrolf)))
  
  ;; before doing anything else change to the start-dir if provided
  ;;
  (if (args:get-arg "-start-dir")
      (if (common:file-exists? (args:get-arg "-start-dir"))
          (let ((fullpath (common:real-path (args:get-arg "-start-dir"))))
            (set-environment-variable! "PWD" fullpath)
            (change-directory fullpath))
      	  (begin
      	    (debug:print-error 0 *default-log-port* "non-existant start dir " (args:get-arg "-start-dir") " specified, exiting.")
      	    (exit 1))))
  

  (define (main)
    (debug:setup)
    (make-and-init-bigdata) 
    (let ((tl        (launch:setup))
 	  (dbname    (args:get-arg "-db")))
      (if dbname
	  (rmt:server-launch dbname)
	  (debug:print 0 *default-log-port* "Usage: mtserve -db <dbpath/file>.db"))))
  #;(set! *didsomething* #t)
  
  
  (thread-join!
   (thread-start!
    (make-thread main)))

)

;; (define *usage-log-file* #f)    ;; put path to file for logging usage in this var in the ~/.megatestrc file
;; (define *usage-use-seconds* #t) ;; for Epoc seconds in usage logging change this to #t in ~/.megatestrc file
;; 
;; ;;======================================================================
;; ;; Test commands (i.e. for use inside tests)
;; ;;======================================================================
;; 
;; (define (megatest:step step state status logfile msg)
;;   (if (not (get-environment-variable "MT_CMDINFO"))
;;       (begin
;;      	(debug:print-error 0 *default-log-port* "MT_CMDINFO env var not set, -step must be called *inside* a megatest invoked environment!")
;;      	(exit 5))
;;       (let* ((cmdinfo   (common:read-encoded-string (get-environment-variable "MT_CMDINFO")))
;;      	     (transport (assoc/default 'transport cmdinfo))
;;      	     (testpath  (assoc/default 'testpath  cmdinfo))
;;      	     (test-name (assoc/default 'test-name cmdinfo))
;;      	     (runscript (assoc/default 'runscript cmdinfo))
;;      	     (db-host   (assoc/default 'db-host   cmdinfo))
;;      	     (run-id    (assoc/default 'run-id    cmdinfo))
;;      	     (test-id   (assoc/default 'test-id   cmdinfo))
;;      	     (itemdat   (assoc/default 'itemdat   cmdinfo))
;;      	     (work-area (assoc/default 'work-area cmdinfo))
;;      	     (db        #f))
;;      	(change-directory testpath)
;;      	(if (not (launch:setup))
;;      	    (begin
;;      	      (debug:print 0 *default-log-port* "Failed to setup, exiting")
;;      	      (exit 1)))
;;      	(if (and state status)
;;      	    (let ((comment (launch:load-logpro-dat run-id test-id step)))
;;      	      ;; (rmt:test-set-log! run-id test-id (conc stepname ".html"))))
;;      	      (rmt:teststep-set-status! run-id test-id step state status (or comment msg) logfile))
;;      	    (begin
;;      	      (debug:print-error 0 *default-log-port* "You must specify :state and :status with every call to -step")
;;      	      (exit 6))))))
;; 
;; ;;======================================================================
;; ;; full run
;; ;;======================================================================
;; 
;; (define (handle-run-requests target runname keys keyvals need-clean)	 
;;   (if (or (args:get-arg "-kill-rerun") (args:get-arg "-rerun-clean")) ;; first set states/statuses correct
;;       ;; For rerun-clean do we or do we not support the testpatt?
;;       (let ((states   (or (configf:lookup *configdat* "validvalues" "cleanrerun-states")
;;      			  "KILLREQ,KILLED,UNKNOWN,INCOMPLETE,STUCK,NOT_STARTED"))
;;      	    (statuses (or (configf:lookup *configdat* "validvalues" "cleanrerun-statuses")
;;      			  "FAIL,INCOMPLETE,ABORT,CHECK,DEAD,PREQ_FAIL,PREQ_DISCARDED")))
;;      	(hash-table-set! args:arg-hash "-preclean" #t)
;;      	(runs:operate-on 'set-state-status
;;      			 target
;;      			 (common:args-get-runname)  ;; (or (args:get-arg "-runname")(args:get-arg ":runname"))
;;      			 ;; "%" ;; (common:args-get-testpatt #f) ;; (args:get-arg "-testpatt")
;;      			 (common:args-get-testpatt #f) ;; (args:get-arg "-testpatt")
;;      			 state:  states
;;      			 ;; status: statuses
;;      			 new-state-status: "NOT_STARTED,n/a")
;;      	(runs:clean-cache target runname *toppath*)
;;      	(runs:operate-on 'set-state-status
;;      			 target
;;      			 (common:args-get-runname)  ;; (or (args:get-arg "-runname")(args:get-arg ":runname"))
;;      			 ;; "%" ;; (common:args-get-testpatt #f) ;; (args:get-arg "-testpatt")
;;      			 (common:args-get-testpatt #f) ;; (args:get-arg "-testpatt")
;;      			 ;; state:  states
;;      			 status: statuses
;;      			 new-state-status: "NOT_STARTED,n/a")))
;;   ;; RERUN ALL
;;   (if (args:get-arg "-rerun-all") ;; first set states/statuses correct
;;       (let* ((rconfig (full-runconfigs-read)))
;;      	(hash-table-set! args:arg-hash "-preclean" #t)
;;      	(runs:operate-on 'set-state-status
;;      			 target
;;      			 (common:args-get-runname)  ;; (or (args:get-arg "-runname")(args:get-arg ":runname"))
;;      			 (common:args-get-testpatt rconfig) ;; (args:get-arg "-testpatt")
;;      			 state:  #f
;;      			 ;; status: statuses
;;      			 new-state-status: "NOT_STARTED,n/a")
;;      	(runs:clean-cache target runname *toppath*)
;;      	(runs:operate-on 'set-state-status
;;      			 target
;;      			 (common:args-get-runname)  ;; (or (args:get-arg "-runname")(args:get-arg ":runname"))
;;      			 (common:args-get-testpatt rconfig) ;; (args:get-arg "-testpatt")
;;      			 ;; state:  states
;;      			 status: #f
;;      			 new-state-status: "NOT_STARTED,n/a")))
;;   (let* ((config-reruns      (let ((x (configf:lookup *configdat* "setup" "reruns")))
;;      			       (if x (string->number x) #f)))
;;      	 (rerun-cnt (if config-reruns
;;      			config-reruns
;;      			1)))
;;     
;;     (runs:run-tests target
;;      		    runname
;;      		    #f ;; (common:args-get-testpatt #f)
;;      		    ;; (or (args:get-arg "-testpatt")
;;      		    ;;     "%")
;;      		    (bdat-user *bdat*)
;;      		    args:arg-hash
;;      		    run-count: rerun-cnt)))
;; 
;; ;; csv processing record
;; (define (make-refdb:csv)
;;   (vector 
;;    (make-sparse-array)
;;    (make-hash-table)
;;    (make-hash-table)
;;    0
;;    0))
;; (define-inline (refdb:csv-get-svec     vec)    (vector-ref  vec 0))
;; (define-inline (refdb:csv-get-rows     vec)    (vector-ref  vec 1))
;; (define-inline (refdb:csv-get-cols     vec)    (vector-ref  vec 2))
;; (define-inline (refdb:csv-get-maxrow   vec)    (vector-ref  vec 3))
;; (define-inline (refdb:csv-get-maxcol   vec)    (vector-ref  vec 4))
;; (define-inline (refdb:csv-set-svec!    vec val)(vector-set! vec 0 val))
;; (define-inline (refdb:csv-set-rows!    vec val)(vector-set! vec 1 val))
;; (define-inline (refdb:csv-set-cols!    vec val)(vector-set! vec 2 val))
;; (define-inline (refdb:csv-set-maxrow!  vec val)(vector-set! vec 3 val))
;; (define-inline (refdb:csv-set-maxcol!  vec val)(vector-set! vec 4 val))
;; 
;; (define (get-dat results sheetname)
;;   (or (hash-table-ref/default results sheetname #f)
;;       (let ((tmp-vec  (make-refdb:csv)))
;;      	(hash-table-set! results sheetname tmp-vec)
;;      	tmp-vec)))
;; 
;; ;; bracket open-output-file with code to make leading directory if it does not exist and handle exceptions
;; (define (open-logfile logpath-in)
;;   (condition-case
;;    (let* ((log-dir (or (pathname-directory logpath-in) "."))
;;      	  (fname   (pathname-strip-directory logpath-in))
;;      	  (logpath (if (> (string-length fname) 250)
;;      		       (let ((newlogf (conc log-dir "/" (common:get-signature fname) ".log")))
;;      			 (debug:print 0 *default-log-port* "WARNING: log file " logpath-in " path too long, converted to " newlogf)
;;      			 newlogf)
;;      		       logpath-in)))
;;      (if (not (directory-exists? log-dir))
;; 	 (system (conc "mkdir -p " log-dir)))
;;      (open-output-file logpath))
;;    (exn ()
;; 	(debug:print-error 0 *default-log-port* "Could not open log file for write: "logpath-in)
;; 	(set! *didsomething* #t)
;; 	(exit 1))))
;; 
;; ;; Disabled help items
;; ;;  -rollup                 : (currently disabled) fill run (set by :runname)  with latest test(s)
;; ;;                            from prior runs with same keys
;; ;;  -daemonize              : fork into background and disconnect from stdin/out
;; 
;; (define help (conc "
;; Megatest, documentation at http://www.kiatoa.com/fossils/megatest
;;   version " megatest-version "
;;   license GPL, Copyright Matt Welland 2006-2017
;;  
;; Usage: megatest [options]
;;   -h                      : this help
;;   -manual                 : show the Megatest user manual
;;   -version                : print megatest version (currently " megatest-version ")
;; 
;; Launching and managing runs
;;   -run                    : run all tests or as specified by -testpatt
;;   -remove-runs            : remove the data for a run, requires -runname and -testpatt
;;                             Optionally use :state and :status, use -keep-records to remove only
;;                             the run data. Use -kill-wait to override the 10 second
;;                             per test wait after kill delay (e.g. -kill-wait 0). 
;;   -kill-runs              : kill existing run(s) (all incomplete tests killed)
;;   -kill-rerun             : kill an existing run (all incomplete tests killed and run is rerun)
;;   -set-state-status X,Y   : set state to X and status to Y, requires controls per -remove-runs
;;   -rerun FAIL,WARN...     : force re-run for tests with specificed status(s)
;;   -rerun-clean            : set all tests not COMPLETED+PASS,WARN,WAIVED to NOT_STARTED,n/a
;;                             and then run the specified testpatt with -preclean
;;   -rerun-all              : set all tests to NOT_STARTED,n/a and run with -preclean
;;   -lock                   : lock run specified by target and runname
;;   -unlock                 : unlock run specified by target and runname
;;   -set-run-status status  : sets status for run to status, requires -target and -runname
;;   -get-run-status         : gets status for run specified by target and runname
;;   -run-wait               : wait on run specified by target and runname
;;   -preclean               : remove the existing test directory before running the test
;;   -clean-cache            : remove the cached megatest.config and runconfigs.config files
;;   -no-cache               : do not use the cached config files. 
;;   -one-pass               : launch as many tests as you can but do not wait for more to be ready
;;   -remove-keep N          : remove all but N most recent runs per target; use '-actions, -age, -precmd'
;;   -age <age>              : 120d,3h,20m to apply only to runs older than the 
;;                                  specified age. NB// M=month, m=minute
;;   -actions <action>[,...] : actions to take; print,remove-runs,archive,kill-runs
;;   -precmd                 : insert a wrapper command in front of the commands run
;; 
;; Selectors (e.g. use for -runtests, -remove-runs, -set-state-status, -list-runs etc.)
;;   -target key1/key2/...   : run for key1, key2, etc.
;;   -reqtarg key1/key2/...  : run for key1, key2, etc. but key1/key2 must be in runconfigs
;;   -testpatt patt1/patt2,patt3/...  : % is wildcard
;;   -runname                : required, name for this particular test run
;;   -state                  : Applies to runs, tests or steps depending on context
;;   -status                 : Applies to runs, tests or steps depending on context
;;   -modepatt key           : load testpatt from <key> in runconfigs instead of default TESTPATT if -testpatt and -tagexpr are not specified
;;   -tagexpr tag1,tag2%,..  : select tests with tags matching expression
;;   
;; 
;; Test helpers (for use inside tests)
;;   -step stepname
;;   -test-status            : set the state and status of a test (use :state and :status)
;;   -setlog logfname        : set the path/filename to the final log relative to the test
;;                             directory. may be used with -test-status
;;   -set-toplog logfname    : set the overall log for a suite of sub-tests
;;   -summarize-items        : for an itemized test create a summary html 
;;   -m comment              : insert a comment for this test
;; 
;; Test data capture
;;   -set-values             : update or set values in the testdata table
;;   :category               : set the category field (optional)
;;   :variable               : set the variable name (optional)
;;   :value                  : value measured (required)
;;   :expected               : value expected (required)
;;   :tol                    : |value-expect| <= tol (required, can be <, >, >=, <= or number)
;;   :units                  : name of the units for value, expected_value etc. (optional)
;;   -load-test-data         : read test specific data for storage in the test_data table
;;                             from standard in. Each line is comma delimited with four
;;                             fields category,variable,value,comment
;; 
;; Queries
;;   -list-runs patt         : list runs matching pattern \"patt\", % is the wildcard
;;   -show-keys              : show the keys used in this megatest setup
;;   -test-files targpatt    : get the most recent test path/file matching targpatt e.g. %/% or '*.log'
;;                             returns list sorted by age ascending, see examples below
;;   -test-paths             : get the test paths matching target, runname, item and test
;;                             patterns.
;;   -list-disks             : list the disks available for storing runs
;;   -list-targets           : list the targets in runconfigs.config
;;   -list-db-targets        : list the target combinations used in the db
;;   -show-config            : dump the internal representation of the megatest.config file
;;   -show-runconfig         : dump the internal representation of the runconfigs.config file
;;   -dumpmode MODE          : dump in MODE format instead of sexpr, MODE=json,ini,sexp etc. (add -debug 0,9 to see which file contributes each line)
;;   -show-cmdinfo           : dump the command info for a test (run in test environment)
;;   -section sectionName
;;   -var varName            : for config and runconfig lookup value for sectionName varName
;;   -since N                : get list of runs changed since time N (Unix seconds)
;;   -fields fieldspec       : fields to include in json dump; runs:id,runame+tests:testname+steps
;;   -sort fieldname         : in -list-runs sort tests by this field
;;   -testdata-csv [categorypatt/]varpatt  : dump testdata for given category
;; 
;; Misc 
;;   -start-dir path         : switch to this directory before running megatest
;;   -contour cname          : add a level of hierarcy to the linktree and run paths
;;   -area-tag tagname       : add a tag to an area while syncing to pgdb
;;   -run-tag tagname        : add a tag to a run while syncing to pgdb
;;   -rebuild-db             : bring the database schema up to date
;;   -cleanup-db             : remove any orphan records, vacuum the db
;;   -import-megatest.db     : push data from megatest.db to cache db files in /tmp/$USER
;;   -sync-to-megatest.db    : pull data from cache files in /tmp/$USER to megatest.db
;;   -sync-to dest           : sync to new postgresql central style database
;;   -update-meta            : update the tests metadata for all tests
;;   -setvars VAR1=val1,VAR2=val2 : Add environment variables to a run NB// these are
;;                                  overwritten by values set in config files.
;;   -server -|hostname      : start the server (reduces contention on megatest.db), use
;;                             - to automatically figure out hostname
;;   -adjutant C,M           : start the server/adjutant with allocated cores C and Mem M (Gig), 
;;                             use 0,0 to auto use full machine
;;   -transport http|rpc     : use http or rpc for transport (default is http) 
;;   -log logfile            : send stdout and stderr to logfile
;;   -autolog logfilebase    : appends pid and host to logfilebase for logfile
;;   -list-servers           : list the servers 
;;   -kill-servers           : kill all servers
;;   -repl                   : start a repl (useful for extending megatest)
;;   -load file.scm          : load and run file.scm
;;   -mark-incompletes       : find and mark incomplete tests
;;   -ping run-id|host:port  : ping server, exit with 0 if found
;;   -debug N|N,M,O...       : enable debug 0-N or N and M and O ...
;;   -debug-noprop N|M,M,O...: enable debug but do not propagate to subprocesses via MT_DEBUG
;;   -config fname           : override the megatest.config file with fname
;;   -append-config fname    : append fname to the megatest.config file
;; 
;; Utilities
;;   -env2file fname         : write the environment to fname.csh and fname.sh
;;   -envcap a               : save current variables labeled as context 'a' in file envdat.db
;;   -envdelta a-b           : output enviroment delta from context a to context b to -o fname
;;                             set the output mode with -dumpmode csh, bash or ini
;;                             note: ini format will use calls to use curr and minimize path
;;   -refdb2dat refdb        : convert refdb to sexp or to format specified by s-dumpmode
;;                             formats: perl, ruby, sqlite3, csv (for csv the -o param
;;                             will substitute %s for the sheet name in generating 
;;                             multiple sheets)
;;   -o                      : output file for refdb2dat (defaults to stdout)
;;   -archive cmd            : archive runs specified by selectors to one of disks specified
;;                             in the [archive-disks] section.
;;                             cmd: keep-html, restore, save, save-remove, get, replicate-db (use 
;;                             -dest to set destination), -include path1,path2... to get or save specific files
;;   -generate-html          : create a simple html dashboard for browsing your runs
;;   -generate-html-structure  : create a top level html veiw to list targets/runs and a Run view within each run directory.  
;;   -list-run-time          : list time requered to complete runs. It supports following switches
;;                             -run-patt <patt> -target-patt <patt> -dumpmode <csv,json,plain-text>
;;   -list-test-time	  : list time requered to complete each test in a run. It following following arguments
;;                             -runname <patt> -target <patt> -dumpmode <csv,json,plain-text>
;;   -syscheck               : do some very basic checks; write access and space in tmp, home, runs, links and 
;;                             is $DISPLAY valid 
;;   -list-waivers           : dump waivers for specified target, runname, testpatt to stdout
;; 
;; Diff report
;;   -diff-rep               : generate diff report (must include -src-target, -src-runname, -target, -runname
;;                                                   and either -diff-email or -diff-html)
;;   -src-target <target>
;;   -src-runname <target>
;;   -diff-email <emails>    : comma separated list of email addresses to send diff report
;;   -diff-html  <rep.html>  : path to html file to generate
;; 
;; Spreadsheet generation
;;   -extract-ods fname.ods  : extract an open document spreadsheet from the database
;;   -pathmod path           : insert path, i.e. path/runame/itempath/logfile.html
;;                             will clear the field if no rundir/testname/itempath/logfile
;;                             if it contains forward slashes the path will be converted
;;                             to windows style
;; Getting started
;;   -create-megatest-area   : create a skeleton megatest area. You will be prompted for paths
;;   -create-test testname   : create a skeleton megatest test. You will be prompted for info
;; 
;; Examples
;; 
;; # Get test path, use '.' to get a single path or a specific path/file pattern
;; megatest -test-files 'logs/*.log' -target ubuntu/n%/no% -runname w49% -testpatt test_mt%
;; 
;; Called as " (string-intersperse (argv) " ") "
;; Version " megatest-version ", built from " megatest-fossil-hash ))
;;      
;; (define (main)
;;   (make-and-init-bigdata)
;; 
;; ;; load the ~/.megatestrc file, put (use trace)(trace-call-sites #t)(trace function-you-want-to-trace) in this file
;; ;;
;; (let ((debugcontrolf (conc (get-environment-variable "HOME") "/.megatestrc")))
;;   (if (common:file-exists? debugcontrolf)
;;       (load debugcontrolf)))
;; 
;; ;; usage logging, careful with this, it is not designed to deal with all real world challenges!
;; ;;
;; (if (and *usage-log-file*
;; 	 (file-writable? *usage-log-file*))
;;     (with-output-to-file
;; 	*usage-log-file*
;;       (lambda ()
;; 	(print
;; 	 (if *usage-use-seconds*
;; 	     (current-seconds)
;; 	     (time->string
;; 	      (seconds->local-time (current-seconds))
;; 	      "%Yww%V.%w %H:%M:%S"))
;; 	 " "
;; 	 (current-user-name) " "
;; 	 (current-directory) " "
;; 	 "\"" (string-intersperse (argv) " ") "\""))
;;       #:append))
;; 
;;      ;;  -gui                    : start a gui interface
;;      ;;  -config fname           : override the runconfigs file with fname
;;      
;;      ;; process args
;;      (define remargs (args:get-args 
;;      		 (argv)
;;      		 (list  "-runtests"  ;; run a specific test
;;      			"-config"    ;; override the config file name
;;      			"-append-config"
;;      			"-execute"   ;; run the command encoded in the base64 parameter
;;      			"-step"
;;      			"-target"
;;      			"-reqtarg"
;;      			":runname"
;;      			"-runname"
;;      			":state"  
;;      			"-state"
;;      			":status"
;;      			"-status"
;;      			"-list-runs"
;; 			"-testdata-csv"
;;      			"-testpatt"
;; 			"--modepatt"
;; 			"-modepatt"
;; 			"-tagexpr"
;;      			"-itempatt"
;;      			"-setlog"
;;      			"-set-toplog"
;;      			"-runstep"
;;      			"-logpro"
;;      			"-m"
;;      			"-rerun"
;;      
;;      			"-days"
;;      			"-rename-run"
;;      			"-to"
;;      			"-dest"
;; 			"-source" 
;; 			"-time-stamp" 
;;      			;; values and messages
;;      			":category"
;;      			":variable"
;;      			":value"
;;      			":expected"
;;      			":tol"
;;      			":units"
;;      
;;      			;; misc
;;      			"-start-dir"
;; 			"-run-patt"
;; 			"-target-patt"   
;;      			"-contour"
;; 			"-area-tag"  
;; 			"-area"  
;;      			"-run-tag"
;;      			"-server"
;; 			"-db"            ;; file name for setting up a server
;;      			"-adjutant"
;;      			"-transport"
;;      			"-port"
;;      			"-extract-ods"
;;      			"-pathmod"
;;      			"-env2file"
;;      			"-envcap"
;;      			"-envdelta"
;;      			"-setvars"
;;      			"-set-state-status"
;; 			
;; 			;; move runs stuff here
;; 			"-remove-keep"           
;;      			"-set-run-status"
;;      			"-age"
;;      
;;      			;; archive 
;;      			"-archive"
;;      			"-actions"
;;      			"-precmd"
;;      			"-include"
;;      			"-exclude-rx"
;;      			"-exclude-rx-from"
;;      			
;;      			"-debug" ;; for *verbosity* > 2
;;      			"-debug-noprop"
;;      			"-create-test"
;;      			"-override-timeout"
;;      			"-test-files"  ;; -test-paths is for listing all
;;      			"-load"        ;; load and exectute a scheme file
;;      			"-section"
;;      			"-var"
;;      			"-dumpmode"
;;      			"-run-id"
;;      			"-ping"
;;      			"-refdb2dat"
;;      			"-o"
;;      			"-log"
;; 			"-autolog"
;; 			"-sync-log"
;;      			"-since"
;;      			"-fields"
;;      			"-recover-test" ;; run-id,test-id - used internally to recover a test stuck in RUNNING state
;;      			"-sort"
;;      			"-target-db"
;;      			"-source-db"
;;      			"-prefix-target"
;;      
;; 			"-src-target"
;; 			"-src-runname"
;; 			"-diff-email"
;;      			"-sync-to"			
;;      			"-pgsync"
;;      			"-kill-wait"    ;; wait this long before removing test (default is 10 sec)
;; 			"-diff-html"
;;      
;;      			;; wizards, area capture, setup new ...
;;      			"-extract-skeleton"
;;      			)
;;       		 (list  "-h" "-help" "--help"
;;      			"-manual"
;;      			"-version"
;;      		        "-force"
;;      		        "-xterm"
;;      		        "-showkeys"
;;      		        "-show-keys"
;;      		        "-test-status"
;;      			"-set-values"
;;      			"-load-test-data"
;;      			"-summarize-items"
;;      		        "-gui"
;;      			"-daemonize"
;;      			"-preclean"
;;      			"-rerun-clean"
;;      			"-rerun-all"
;;      			"-clean-cache"
;;      			"-no-cache"
;;      			"-cache-db"
;;      			"-cp-eventtime-to-publishtime"
;;                              "-use-db-cache"
;;                              "-prepend-contour"
;;      
;;      
;;      			;; misc
;;      			"-repl"
;;      			"-lock"
;;      			"-unlock"
;;      			"-list-servers"
;;      			"-kill-servers"
;; 			"-run-wait"      ;; wait on a run to complete (i.e. no RUNNING)
;;      			"-one-pass"      ;;
;;      			"-local"         ;; run some commands using local db access
;;      			"-generate-html"
;;      			"-generate-html-structure" 
;;      			"-list-run-time"
;;                              "-list-test-time"
;;      			
;;      			;; misc queries
;;      			"-list-disks"
;;      			"-list-targets"
;;      			"-list-db-targets"
;;      			"-show-runconfig"
;;      			"-show-config"
;;      			"-show-cmdinfo"
;;      			"-get-run-status"
;;      			"-list-waivers"
;;      
;;      			;; queries
;;      			"-test-paths" ;; get path(s) to a test, ordered by youngest first
;;      
;;      			"-runall"    ;; run all tests, respects -testpatt, defaults to %
;;      			"-run"       ;; alias for -runall
;;      			"-remove-runs"
;;                              "-kill-runs"
;;                              "-kill-rerun"
;;                              "-keep-records" ;; use with -remove-runs to remove only the run data
;;      			"-rebuild-db"
;;      			"-cleanup-db"
;;      			"-rollup"
;;      			"-update-meta"
;;      			"-create-megatest-area"
;;      			"-mark-incompletes"
;;      
;;      			"-convert-to-norm"
;;      			"-convert-to-old"
;;      			"-import-megatest.db"
;;      			"-sync-to-megatest.db"
;; 			"-sync-brute-force"
;;      			"-logging"
;;      			"-v" ;; verbose 2, more than normal (normal is 1)
;;      			"-q" ;; quiet 0, errors/warnings only
;;      
;;                              "-diff-rep"
;;      
;;      			"-syscheck"
;;      			"-obfuscate"
;;      			;; junk placeholder
;;      			;; "-:p"
;;      			
;;                              )
;;      		 args:arg-hash
;;      		 0))
;;      
;;      ;; Add args that use remargs here
;;      ;;
;;      (if (and (not (null? remargs))
;;      	 (not (or
;;      	       (args:get-arg "-runstep")
;;      	       (args:get-arg "-envcap")
;;      	       (args:get-arg "-envdelta")
;;      	       )
;;      	      ))
;;          (debug:print-error 0 *default-log-port* "Unrecognised arguments: " (string-intersperse (if (list? remargs) remargs (argv))  " ")))
;;      
;;      ;; before doing anything else change to the start-dir if provided
;;      ;;
;;      (if (args:get-arg "-start-dir")
;;          (if (common:file-exists? (args:get-arg "-start-dir"))
;;              (let ((fullpath (common:real-path (args:get-arg "-start-dir"))))
;;                (set-environment-variable! "PWD" fullpath)
;;                (change-directory fullpath))
;;      	(begin
;;      	  (debug:print-error 0 *default-log-port* "non-existant start dir " (args:get-arg "-start-dir") " specified, exiting.")
;;      	  (exit 1))))
;;      
;;      ;; immediately set MT_TARGET if -reqtarg or -target are available
;;      ;;
;;      (let ((targ (or (args:get-arg "-reqtarg")(args:get-arg "-target"))))
;;        (if targ (set-environment-variable! "MT_TARGET" targ)))
;;      
;;      ;; The watchdog is to keep an eye on things like db sync etc.
;;      ;;
;; ;; (init-watchdog)
;;   
;; ;;      (define (debug:debug-mode n)
;; ;;        (cond
;; ;;         ((and (number? *verbosity*)   ;; number number
;; ;;      	 (number? n))
;; ;;          (<= n *verbosity*))
;; ;;         ((and (list? *verbosity*)     ;; list   number
;; ;;      	 (number? n))
;; ;;          (member n *verbosity*))
;; ;;         ((and (list? *verbosity*)     ;; list   list
;; ;;      	 (list? n))
;; ;;          (not (null? (lset-intersection! eq? *verbosity* n))))
;; ;;         ((and (number? *verbosity*)
;; ;;      	 (list? n))
;; ;;          (member *verbosity* n))))
;; 
;;      ;; this segment will run launch:setup only if -log is not set. This is fairly safe as servers are not
;;      ;; manually started and thus should never be started in a non-megatest area. Thus no need to handle situation
;;      ;; where (launch:setup) returns #f?
;;      ;;
;;      (if (or (args:get-arg "-log") ;;(args:get-arg "-server") ;; redirect the log always when a server
;; 	     (args:get-arg "-autolog"))
;;          (handle-exceptions
;;      	exn
;;      	(begin
;;      	  (print "ERROR: Failed to switch to log output. " ((condition-property-accessor 'exn 'message) exn) ", exn=" exn)
;;      	  )
;;         (let* ((tl   (or (args:get-arg "-log")
;; 			 (args:get-arg "-autolog") ;; autolog provides the basename .../logs/something- for the logfile
;; 			 (launch:setup)))   ;; run launch:setup if -server, ensure we do NOT run launch:setup if -log specified
;;      	       (logf (or (args:get-arg "-log") ;; use -log unless we are a server, then craft a logfile name
;; 			 (conc tl (current-process-id)"-"(get-host-name)".log")
;;      			 (conc tl "/logs/server-" (current-process-id) "-" (get-host-name) ".log")))
;;      	       (oup  (open-logfile logf)))
;;      	(if (not (args:get-arg "-log"))
;;      	    (hash-table-set! args:arg-hash "-log" logf)) ;; fake out future queries of -log
;;      	(debug:print-info 0 *default-log-port* "Sending log output to " logf)
;;      	(set! *default-log-port* oup))))
;;      
;;      (if (or (args:get-arg "-h")
;;      	(args:get-arg "-help")
;;      	(args:get-arg "--help"))
;;          (begin
;;            (print help)
;;            (exit)))
;;      
;;      (if (args:get-arg "-manual")
;;          (let* ((htmlviewercmd (or (configf:lookup *configdat* "setup" "htmlviewercmd")
;;      			      (common:which '("firefox" "arora"))))
;;      	   (install-home  (common:get-install-area))
;;      	   (manual-html   (conc install-home "/share/docs/megatest_manual.html")))
;;            (if (and install-home
;;      	       (common:file-exists? manual-html))
;;      	  (system (conc "(" htmlviewercmd " " manual-html " ) &"))
;;      	  (system (conc "(" htmlviewercmd " http://www.kiatoa.com/cgi-bin/fossils/megatest/doc/tip/docs/manual/megatest_manual.html ) &")))
;;            (exit)))
;;      
;;      (if (args:get-arg "-version")
;;          (begin
;;            (print (common:version-signature)) ;; (print megatest-version)
;;            (exit)))
;;      
;;      ;; Overall exit handling setup immediately
;;      ;;
;;      (if (or (args:get-arg "-process-reap"))
;;              ;; (args:get-arg "-runtests")
;;      	;; (args:get-arg "-execute")
;;      	;; (args:get-arg "-remove-runs")
;;      	;; (args:get-arg "-runstep"))
;;          (let ((original-exit (exit-handler)))
;;            (exit-handler (lambda (#!optional (exit-code 0))
;;      		      (printf "Preparing to exit with exit code ~A ...\n" exit-code)
;;      		      (for-each
;;      		       
;;      		       (lambda (pid)
;;      			 (handle-exceptions
;;      			     exn
;;      			   (begin
;;      			     (printf "process reap failed. exn=~A\n" exn)
;;      			     #t)
;;      			  (let-values (((pid-val exit-status exit-code) (process-wait pid #t)))
;;      				      (if (or (eq? pid-val pid)
;;      					      (eq? pid-val 0))
;;      					  (begin
;;      					    (printf "Sending signal/term to ~A\n" pid)
;;      					    (process-signal pid signal/term))))))
;;      		       (process:children #f))
;;      		      (original-exit exit-code)))))
;;      
;;      ;; for some switches always print the command to stderr
;;      ;;
;;      (if (args:any-defined? "-run" "-runall" "-remove-runs" "-set-state-status" "-kill-runs" "-kill-rerun")
;;          (debug:print 0 *default-log-port* (string-intersperse (argv) " ")))
;;      
;;      ;; some switches imply homehost. Exit here if not on homehost
;;      ;;
;;      #;(let ((homehost-required  (list "-cleanup-db" "-server")))
;;        (if (apply args:any-defined? homehost-required)
;;            (if (not (common:on-homehost?))
;;      	  (for-each
;;      	   (lambda (switch)
;;      	     (if (args:get-arg switch)
;;      		 (begin
;;      		   (debug:print 0 *default-log-port* "ERROR: you must be on the homehost to run with " switch
;;      				", you can move homehost by removing the .homehost file but this will disrupt any runs in progress.")
;;      		   (exit 1))))
;;      	   homehost-required))))
;;      
;;      ;;======================================================================
;;      ;; Misc setup stuff
;;      ;;======================================================================
;;      
;;      (debug:setup)
;;      
;;      (if (args:get-arg "-logging")(set! *logging* #t))
;;      
;;      ;;(if (debug:debug-mode 3) ;; we are obviously debugging
;;      ;;    (set! open-run-close open-run-close-no-exception-handling))
;;      
;;      (if (args:get-arg "-itempatt")
;;          (let ((newval (conc (args:get-arg "-testpatt") "/" (args:get-arg "-itempatt"))))
;;            (debug:print 0 *default-log-port* "WARNING: -itempatt has been deprecated, please use -testpatt testpatt/itempatt method, new testpatt is "newval)
;;            (hash-table-set! args:arg-hash "-testpatt" newval)
;;            (hash-table-delete! args:arg-hash "-itempatt")))
;;      
;;      (if (args:get-arg "-runtests")
;;          (debug:print 0 *default-log-port* "WARNING: \"-runtests\" is deprecated. Use \"-run\" with \"-testpatt\" instead"))
;; 
;;      ;; (debug:print 0 *default-log-port* "on-exit disabled. Please re-enable")
;;      (on-exit std-exit-procedure)
;;      
;;      ;;======================================================================
;;      ;; Misc general calls
;;      ;;======================================================================
;; 
;; ;; TODO: Restore this functionality
;; 
;;      #; (if (and (args:get-arg "-cache-db")
;;               (args:get-arg "-source-db"))
;;          (let* ((temp-dir (or (args:get-arg "-target-db") (create-directory (conc "/tmp/" (get-environment-variable "USER") "/" (string-translate (current-directory) "/" "_")))))
;;                 (target-db (conc temp-dir "/cached.db"))
;;                 (source-db (args:get-arg "-source-db")))        
;;            (db:cache-for-read-only source-db target-db)
;;            (set! *didsomething* #t)))
;;      
;;      ;; handle a clean-cache request as early as possible
;;      ;;
;;      (if (args:get-arg "-clean-cache")
;;          (let ((toppath  (launch:setup)))
;;            (set! *didsomething* #t) ;; suppress the help output.
;;            (runs:clean-cache (common:args-get-target)
;;      			(args:get-arg "-runname")
;;      			toppath)))
;;      	  
;;      (if (args:get-arg "-env2file")
;;          (begin
;;            (save-environment-as-files (args:get-arg "-env2file"))
;;            (set! *didsomething* #t)))
;;      
;;      (if (args:get-arg "-list-disks")
;;          (let ((toppath (launch:setup)))
;;            (print 
;;             (string-intersperse 
;;      	(map (lambda (x)
;;      	       (string-intersperse 
;;      		x
;;      		" => "))
;;      	     (common:get-disks *configdat*))
;;      	"\n"))
;;            (set! *didsomething* #t)))
;;      
;;      
;;   (if (args:get-arg "-refdb2dat")
;;          (let* ((input-db (args:get-arg "-refdb2dat"))
;;      	   (out-file (args:get-arg "-o"))
;;      	   (out-fmt  (or (args:get-arg "-dumpmode") "scheme"))
;;      	   (out-port (if (and out-file 
;;      			      (not (member out-fmt '("sqlite3" "csv"))))
;;      			 (open-output-file out-file)
;;      			 (current-output-port)))
;;      	   (res-data (configf:read-refdb input-db))
;;      	   (data     (car res-data))
;;      	   (msg      (cadr res-data)))
;;            (if (not data)
;;      	  (debug:print 0 *default-log-port* "Bad input? data=" data) ;; some error occurred
;;      	  (with-output-to-port out-port
;;      	    (lambda ()
;;      	      (case (string->symbol out-fmt)
;;      		((scheme)(pp data))
;;      		((perl)
;;      		 ;; (print "%hash = (")
;;      		 ;;        key1 => 'value1',
;;      		 ;;        key2 => 'value2',
;;      		 ;;        key3 => 'value3',
;;      		 ;; );
;;      		 (configf:map-all-hier-alist 
;;      		  data 
;;      		  (lambda (sheetname sectionname varname val)
;;      		    (print "$data{\"" sheetname "\"}{\"" sectionname "\"}{\"" varname "\"} = \"" val "\";"))))
;;      		((python ruby)
;;      		 (print "data={}")
;;      		 (configf:map-all-hier-alist
;;      		  data
;;      		  (lambda (sheetname sectionname varname val)
;;      		    (print "data[\"" sheetname "\"][\"" sectionname "\"][\"" varname "\"] = \"" val "\""))
;;      		  initproc1:
;;      		  (lambda (sheetname)
;;      		    (print "data[\"" sheetname "\"] = {}"))
;;      		  initproc2:
;;      		  (lambda (sheetname sectionname)
;;      		    (print "data[\"" sheetname "\"][\"" sectionname "\"] = {}"))))
;;      		((csv)
;;      		 (let* ((results  (make-hash-table)) ;; (make-sparse-array)))
;;      			(row-cols (make-hash-table))) ;; hash of hashes where section => ht { row-<name> => num or col-<name> => num
;;      		   ;; (print "data=")
;;      		   ;; (pp data)
;;      		   (configf:map-all-hier-alist
;;      		    data
;;      		    (lambda (sheetname sectionname varname val)
;;      		      ;; (print "sheetname: " sheetname ", sectionname: " sectionname ", varname: " varname ", val: " val)
;;      		      (let* ((dat      (get-dat results sheetname))
;;      			     (vec      (refdb:csv-get-svec dat))
;;      			     (rownames (refdb:csv-get-rows dat))
;;      			     (colnames (refdb:csv-get-cols dat))
;;      			     (currrown (hash-table-ref/default rownames varname #f))
;;      			     (currcoln (hash-table-ref/default colnames sectionname #f))
;;      			     (rown     (or currrown 
;;      					   (let* ((lastn   (refdb:csv-get-maxrow dat))
;;      						  (newrown (+ lastn 1)))
;;      					     (refdb:csv-set-maxrow! dat newrown)
;;      					     newrown)))
;;      			     (coln     (or currcoln 
;;      					   (let* ((lastn   (refdb:csv-get-maxcol dat))
;;      						  (newcoln (+ lastn 1)))
;;      					     (refdb:csv-set-maxcol! dat newcoln)
;;      					     newcoln))))
;;      			(if (not (sparse-array-ref vec 0 coln)) ;; (eq? rown 0)
;;      			    (begin
;;      			      (sparse-array-set! vec 0 coln sectionname)
;;      			      ;; (print "sparse-array-ref " 0 "," coln "=" (sparse-array-ref vec 0 coln))
;;      			      ))
;;      			(if (not (sparse-array-ref vec rown 0)) ;; (eq? coln 0)
;;      			    (begin
;;      			      (sparse-array-set! vec rown 0 varname)
;;      			      ;; (print "sparse-array-ref " rown "," 0 "=" (sparse-array-ref vec rown 0))
;;      			      ))
;;      			(if (not currrown)(hash-table-set! rownames varname rown))
;;      			(if (not currcoln)(hash-table-set! colnames sectionname coln))
;;      			;; (print "dat=" dat ", rown=" rown ", coln=" coln)
;;      			(sparse-array-set! vec rown coln val)
;;      			;; (print "sparse-array-ref " rown "," coln "=" (sparse-array-ref vec rown coln))
;;      			)))
;;      		   (for-each
;;      		    (lambda (sheetname)
;;      		      (let* ((sheetdat (get-dat results sheetname))
;;      			     (svec     (refdb:csv-get-svec sheetdat))
;;      			     (maxrow   (refdb:csv-get-maxrow sheetdat))
;;      			     (maxcol   (refdb:csv-get-maxcol sheetdat))
;;      			     (fname    (if out-file 
;;      					   (string-substitute "%s" sheetname out-file) ;; "/foo/bar/%s.csv")
;;      					   (conc sheetname ".csv"))))
;;      			(with-output-to-file fname
;;      			  (lambda ()
;;      			    ;; (print "Sheetname: " sheetname)
;;      			    (let loop ((row       0)
;;      				       (col       0)
;;      				       (curr-row '())
;;      				       (result   '()))
;;      			      (let* ((val (sparse-array-ref svec row col))
;;      				     (disp-val (if val
;;      						   (conc "\"" val "\"")
;;      						   "")))
;;      				(if (> col 0)(display ","))
;;      				(display disp-val)
;;      				(cond
;;      				 ((> row maxrow)(display "\n") result)
;;      				 ((>= col maxcol)
;;      				  (display "\n")
;;      				  (loop (+ row 1) 0 '() (append result (list curr-row))))
;;      				 (else
;;      				  (loop row (+ col 1) (append curr-row (list val)) result)))))))))
;;      		    (hash-table-keys results))))
;;      		((sqlite3)
;;      		 (let* ((db-file   (or out-file (pathname-file input-db)))
;;      			(db-exists (common:file-exists? db-file))
;;      			(db        (sqlite3:open-database db-file)))
;;      		   (if (not db-exists)(sqlite3:execute db "CREATE TABLE data (sheet,section,var,val);"))
;;      		   (configf:map-all-hier-alist
;;      		    data
;;      		    (lambda (sheetname sectionname varname val)
;;      		      (sqlite3:execute db
;;      				       "INSERT OR REPLACE INTO data (sheet,section,var,val) VALUES (?,?,?,?);"
;;      				       sheetname sectionname varname val)))
;;      		   (sqlite3:finalize! db)))
;;      		(else
;;      		 (pp data))))))
;;            (if out-file (close-output-port out-port))
;;            (exit) ;; yes, bending the rules here - need to exit since this is a utility
;;            ))
;; 
;;   ;; disabled for now
;;   
;;      #;(if (args:get-arg "-ping")
;;          (let* ((server-id     (string->number (args:get-arg "-ping"))) ;; extract run-id (i.e. no ":"
;;      	   (host:port     (args:get-arg "-ping")))
;;            (server-ready? (or server-id host:port) #f do-exit: #t)))
;;      
;;      ;;======================================================================
;;      ;; Capture, save and manipulate environments
;;      ;;======================================================================
;;      
;;      ;; NOTE: Keep these above the section where the server or client code is setup
;;      
;;      (let ((envcap (args:get-arg "-envcap")))
;;        (if envcap
;;            (let* ((db      (env:open-db (if (null? remargs) "envdat.db" (car remargs)))))
;;      	(env:save-env-vars db envcap)
;;      	(env:close-database db)
;;      	(set! *didsomething* #t))))
;;      
;;      ;; delta "language" will eventually be res=a+b-c but for now it is just res=a-b 
;;      ;;
;;      (let ((envdelta (args:get-arg "-envdelta")))
;;        (if envdelta
;;            (let ((match (string-split envdelta "-")));; (string-match "([a-z0-9_]+)=([a-z0-9_\\-,]+)" envdelta)))
;;      	(if (not (null? match))
;;      	    (let* ((db        (env:open-db (if (null? remargs) "envdat.db" (car remargs))))
;;      		   ;; (resctx    (cadr match))
;;      		   ;; (equn      (caddr match))
;;      		   (parts     match) ;; (string-split equn "-"))
;;      		   (minuend   (car parts))
;;      		   (subtraend (cadr parts))
;;      		   (added     (env:get-added   db minuend subtraend))
;;      		   (removed   (env:get-removed db minuend subtraend))
;;      		   (changed   (env:get-changed db minuend subtraend)))
;;      	      ;; (pp (hash-table->alist added))
;;      	      ;; (pp (hash-table->alist removed))
;;      	      ;; (pp (hash-table->alist changed))
;;      	      (if (args:get-arg "-o")
;;      		  (with-output-to-file
;;      		      (args:get-arg "-o")
;;      		    (lambda ()
;;      		      (env:print added removed changed)))
;;      		  (env:print added removed changed))
;;      	      (env:close-database db)
;;      	      (set! *didsomething* #t))
;;      	    (debug:print-error 0 *default-log-port* "Parameter to -envdelta should be new=start-end")))))
;;      
;;      ;;======================================================================
;;      ;; Start the server - can be done in conjunction with -runall or -runtests (one day...)
;;      ;;   we start the server if not running else start the client thread
;;      ;;======================================================================
;;      
;;      ;; Server? Start up here.
;;      ;;
;;      (if (args:get-arg "-server")
;; 	 (if  (not (args:get-arg "-db"))
;; 	      (debug:print 0 *default-log-port* "ERROR: -db required to start server")
;; 	      (let ((tl        (launch:setup))
;; 		    (dbname    (args:get-arg "-db"))) ;; transport-type (string->symbol (or (args:get-arg "-transport") "http"))))
;; 		(rmt:server-launch dbname)
;; 		(set! *didsomething* #t))))
;; 	 
;;      ;; The adjutant is a bit different, it does NOT run (launch:setup) as it is not necessarily tied to
;;      ;; a specific Megatest area. Detail are being hashed out and this may change.
;;      ;;
;;      (if (args:get-arg "-adjutant")
;;          (begin
;;            (adjutant-run)
;;            (set! *didsomething* #t)))
;;      
;;      (if (or (args:get-arg "-list-servers")
;;              (args:get-arg "-kill-servers"))
;;          (let ((tl (launch:setup)))
;;            (if tl ;; all roads from here exit
;;      	  (let* ((servers (rmt:get-servers-info *toppath*))
;;      		 (fmtstr  "~8a~22a~20a~20a~8a\n"))
;; 	    ;; id INTEGER PRIMARY KEY,
;; 	    ;; host TEXT,
;; 	    ;; port INTEGER,
;; 	    ;; servkey TEXT,
;; 	    ;; pid TEXT,
;; 	    ;; ipaddr TEXT,
;; 	    ;; apath TEXT,
;; 	    ;; dbname TEXT,
;; 	    ;; event_time 
;;      	    (format #t fmtstr "pid" "Interface:port" "State" "dbname" "apath")
;;      	    (format #t fmtstr "===" "==============" "=====" "======" "=====")
;;      	    (for-each ;;  ( mod-time host port start-time pid )
;;      	     (lambda (server)
;; 	       (match-let
;; 		(((id host port servkey pid ipaddr apath dbname event_time) server))
;;      		(format #t
;;      			fmtstr
;;      			pid
;;      			(conc host":"port)
;;      			(if (server-ready? host port servkey) "Running" "Dead")
;;      			dbname ;; (seconds->hr-min-sec mod)
;;      			apath
;; 			)
;;      		 (if (args:get-arg "-kill-servers")
;;      		     (begin
;;      		       (debug:print-info 0 *default-log-port* "Attempting to kill server with pid " pid " !!needs completion!!")
;;      		       #;(server:kill server)))))
;;      	     servers)
;;      	    ;; (debug:print-info 1 *default-log-port* "Done with listservers")
;;      	    (set! *didsomething* #t)
;;      	    (exit))
;;      	  (exit))))
;;            ;; must do, would have to add checks to many/all calls below
;;      
;;      ;;======================================================================
;;      ;; Weird special calls that need to run *after* the server has started?
;;      ;;======================================================================
;;      
;;      (if (args:get-arg "-list-targets")
;;          (if (launch:setup)
;;              (let* ((rconfdat (configf:read-config (conc *toppath* "/runconfigs.config") #f #f))
;; 		    (targets  (common:get-runconfig-targets rconfdat)))
;;                ;; (debug:print 1 *default-log-port* "Found "(length targets) " targets")
;;                (case (string->symbol (or (args:get-arg "-dumpmode") "alist"))
;;                  ((alist)
;;                   (for-each (lambda (x)
;;                               ;; (print "[" x "]"))
;;                               (print x))
;;                             targets))
;;                  ((json)
;;                   (json-write targets))
;;                  (else
;;                   (debug:print-error 0 *default-log-port* "dump output format " (args:get-arg "-dumpmode") " not supported for -list-targets")))
;;                (set! *didsomething* #t))))
;; 
;; 
;;      (if (args:get-arg "-show-runconfig")
;;          (let ((tl (launch:setup)))
;;            (push-directory *toppath*)
;;            (let ((data (full-runconfigs-read)))
;;      	;; keep this one local
;;      	(cond
;;      	 ((and (args:get-arg "-section")
;;      	       (args:get-arg "-var"))
;;      	  (let ((val (or (configf:lookup data (args:get-arg "-section")(args:get-arg "-var"))
;;      			 (configf:lookup data "default" (args:get-arg "-var")))))
;;      	    (if val (print val))))
;;      	 ((or (not (args:get-arg "-dumpmode"))
;;                    (string=? (args:get-arg "-dumpmode") "ini"))
;;      	  (configf:config->ini data))
;;      	 ((string=? (args:get-arg "-dumpmode") "sexp")
;;      	  (pp (hash-table->alist data)))
;;      	 ((string=? (args:get-arg "-dumpmode") "json")
;;      	  (json-write data))
;;      	 (else
;;      	  (debug:print-error 0 *default-log-port* "-dumpmode of " (args:get-arg "-dumpmode") " not recognised")))
;;      	(set! *didsomething* #t))
;;            (pop-directory)))
;;      
;;      (if (args:get-arg "-show-config")
;;          (let ((tl   (launch:setup))
;;      	  (data *configdat*)) ;; (configf:read-config "megatest.config" #f #t)))
;;            (push-directory *toppath*)
;;            ;; keep this one local
;;            (cond 
;;             ((and (args:get-arg "-section")
;;      	     (args:get-arg "-var"))
;;      	(let ((val (configf:lookup data (args:get-arg "-section")(args:get-arg "-var"))))
;;      	  (if val (print val))))
;;      
;;             ;; print just a section if only -section
;;      
;;             ((equal? (args:get-arg "-dumpmode") "sexp")
;;      	(pp (hash-table->alist data)))
;;             ((equal? (args:get-arg "-dumpmode") "json")
;;      	(json-write data))
;;             ((or (not (args:get-arg "-dumpmode"))
;;      	    (string=? (args:get-arg "-dumpmode") "ini"))
;;      	(configf:config->ini data))
;;             (else
;;      	(debug:print-error 0 *default-log-port* "-dumpmode of " (args:get-arg "-dumpmode") " not recognised")))
;;            (set! *didsomething* #t)
;;            (pop-directory)
;;            (bdat-time-to-exit-set! *bdat* #t)))
;;      
;;      (if (args:get-arg "-show-cmdinfo")
;;          (if (or (args:get-arg ":value")(get-environment-variable "MT_CMDINFO"))
;;      	(let ((data (common:read-encoded-string (or (args:get-arg ":value")(get-environment-variable "MT_CMDINFO")))))
;;      	  (if (equal? (args:get-arg "-dumpmode") "json")
;;      	      (json-write data)
;;      	      (pp data))
;;      	  (set! *didsomething* #t))
;;      	(debug:print-info 0 *default-log-port* "environment variable MT_CMDINFO is not set")))
;;      
;;      ;;======================================================================
;;      ;; Remove old run(s)
;;      ;;======================================================================
;;      
;;      ;; since several actions can be specified on the command line the removal
;;      ;; is done first
;;      (define (operate-on action #!key (mode #f)(target-in #f)(runname-in #f)(keys-in #f)(keyvals-in #f)) ;; #f is "use default"
;;        (let* ((runrec (runs:runrec-make-record))
;;      	 (target (or target-in   (common:args-get-target))) ;; eventually get rid of the call to common:args-get-target
;;      	 (runname (or runname-in
;;      		      (args:get-arg "-runname"))) ;; eventually get rid of the get-arg calls
;;      	 (testpatt (or (args:get-arg "-testpatt")
;;      		       (and (eq? action 'archive) ;; if it is an archive command fallback to MT_TEST_NAME and MT_ITEMPATH
;;      			    (common:get-full-test-name))
;;      		       (and (eq? action 'kill-runs)
;;      			    "%/%") ;; I'm just guessing that this is correct :(
;;      		       (common:args-get-testpatt #f) ;; (args:get-arg "-testpatt")))
;;      		       ))) ;;
;;          (cond
;;           ((not target)
;;            (debug:print-error 0 *default-log-port* "Missing required parameter for "
;;      			 action ", you must specify -target or -reqtarg")
;;            (exit 1))
;;           ((not runname)
;;            (debug:print-error 0 *default-log-port* "Missing required parameter for "
;;      			 action ", you must specify the run name pattern with -runname patt")
;;            (exit 2))
;;           ((not testpatt)
;;            (debug:print-error 0 *default-log-port* "Missing required parameter for "
;;      			 action ", you must specify the test pattern with -testpatt")
;;            (exit 3))
;;           (else
;;            (if (not (car *configinfo*))
;;      	  (begin
;;      	    (debug:print-error 0 *default-log-port* "Attempted " action "on test(s) but run area config file not found")
;;      	    (exit 1))
;;      	  ;; put test parameters into convenient variables
;;      	  (begin
;;      	    ;; check for correct version, exit with message if not correct
;; 
;; 	    ;; TODO: restore this functionality
;; 	    
;; 	    ;; (common:exit-on-version-changed)
;; 	    
;;      	    (runs:operate-on  action
;;      			      target
;;      			      runname
;;      			      testpatt
;;      			      state:  (common:args-get-state)
;;      			      status: (common:args-get-status)
;;      			      new-state-status: (args:get-arg "-set-state-status")
;;                                    mode: mode)))
;;            (set! *didsomething* #t)))))
;;      
;;      (if (args:get-arg "-kill-runs")
;;          (general-run-call 
;;           "-kill-runs"
;;           "kill runs"
;;           (lambda (target runname keys keyvals)
;;             (operate-on 'kill-runs mode: #f)
;;             )))
;;      
;;      (if (args:get-arg "-kill-rerun")
;;          (let* ((target-patt (common:args-get-target))
;;                 (runname-patt (args:get-arg "-runname")))
;;            (cond ((not target-patt)
;;                   (debug:print-error 0 *default-log-port* "Missing target, must specify target for -kill-rerun with -target <target name>")
;;                   (exit 1))
;;                  ((not runname-patt)
;;                   (debug:print-error 0 *default-log-port* "Missing runname, must specify runname for -kill-rerun with -runname <run name>")
;;                   (exit 1))
;;                  ((string-search "[ ,%]" target-patt)
;;                   (debug:print-error 0 *default-log-port* "Invalid target ["target-patt"], must specify exact target (no wildcards) for -kill-rerun with -target <target name>")
;;                   (exit 1))
;;                  ((string-search "[ ,%]" runname-patt)
;;                   (debug:print-error 0 *default-log-port* "Invalid runname ["runname-patt"], must specify exact runname (no wildcards) for -kill-rerun with -runname <runname name>")
;;                   (exit 1))
;;                  (else
;;                   (general-run-call 
;;                    "-kill-runs"
;;                    "kill runs"
;;                    (lambda (target runname keys keyvals)
;;                      (operate-on 'kill-runs mode: #f)
;;                      ))
;;            
;;                   (thread-sleep! 15))
;;                  ;; fall thru and let "-run" loop fire
;;                  )))
;;      
;;      
;;      (if (args:get-arg "-remove-runs")
;;          (general-run-call 
;;           "-remove-runs"
;;           "remove runs"
;;           (lambda (target runname keys keyvals)
;;             (operate-on 'remove-runs mode: (if (args:get-arg "-keep-records")
;;                                                'remove-data-only
;;                                                'remove-all)))))
;;      
;;      (if (args:get-arg "-remove-keep")
;;          (general-run-call 
;;           "-remove-keep"
;;           "remove keep"
;;           (lambda (target runname keys keyvals)
;;             (let ((actions (map string->symbol
;;                                 (string-split
;;      			    (or (args:get-arg "-actions")
;;      				"print")
;;      			    ",")))) ;; default to printing the output
;;               (runs:remove-all-but-last-n-runs-per-target target runname
;;      						     (string->number (args:get-arg "-remove-keep"))
;;      						     actions: actions)))))
;;      
;;      (if (args:get-arg "-set-state-status")
;;          (general-run-call 
;;           "-set-state-status"
;;           "set state and status"
;;           (lambda (target runname keys keyvals)
;;             (operate-on 'set-state-status))))
;;      
;;      (if (or (args:get-arg "-set-run-status")
;;      	(args:get-arg "-get-run-status"))
;;          (general-run-call
;;           "-set-run-status"
;;           "set run status"
;;           (lambda (target runname keys keyvals)
;;             (let* ((runsdat  (rmt:get-runs-by-patt keys runname 
;;      					(common:args-get-target)
;;      					#f #f #f #f))
;;      	      (header   (vector-ref runsdat 0))
;;      	      (rows     (vector-ref runsdat 1)))
;;      	 (if (null? rows)
;;      	     (begin
;;      	       (debug:print-info 0 *default-log-port* "No matching run found.")
;;      	       (exit 1))
;;      	     (let* ((row      (car (vector-ref runsdat 1)))
;;      		    (run-id   (db:get-value-by-header row header "id")))
;;      	       (if (args:get-arg "-set-run-status")
;;      		   (rmt:set-run-status run-id (args:get-arg "-set-run-status") msg: (args:get-arg "-m"))
;;      		   (print (rmt:get-run-status run-id))
;;      		   )))))))
;;      
;;      ;;======================================================================
;;      ;; Query runs
;;      ;;======================================================================
;;      
;;      ;; -fields runs:id,target,runname,comment+tests:id,testname,item_path+steps
;;      ;;
;;      ;; csi> (extract-fields-constraints "runs:id,target,runname,comment+tests:id,testname,item_path+steps")
;;      ;;         => (("runs" "id" "target" "runname" "comment") ("tests" "id" "testname" "item_path") ("steps"))
;;      ;;
;;      ;;   NOTE: remember that the cdr will be the list you expect (cdr ("runs" "id" "target" "runname" "comment")) => ("id" "target" "runname" "comment")
;;      ;;         and so alist-ref will yield what you expect
;;      ;;
;;      (define (extract-fields-constraints fields-spec)
;;        (map (lambda (table-spec) ;; runs:id,target,runname
;;      	 (let ((dat (string-split table-spec ":"))) ;; ("runs" "id,target,runname")
;;      	   (if (> (length dat) 1)
;;      	       (cons (car dat)(string-split (cadr dat) ",")) ;; "id,target,runname"
;;      	       dat)))
;;             (string-split fields-spec "+")))
;;      
;;      (define (get-value-by-fieldname datavec test-field-index fieldname)
;;        (let ((indx (hash-table-ref/default test-field-index fieldname #f)))
;;          (if indx
;;      	(if (>= indx (vector-length datavec))
;;      	    #f ;; index too high, should raise an error I suppose
;;      	    (vector-ref datavec indx))
;;      	#f)))
;;      
;;      
;;      
;;      
;;      
;;      (when (args:get-arg "-testdata-csv")
;;        (if (launch:setup)
;;            (let* ((keys        (rmt:get-keys)) ;; (db:get-keys dbstruct))
;;                   (runpatt     (or (args:get-arg "-runname") "%"))
;;                   (testpatt    (common:args-get-testpatt #f))
;;                   (datapatt    (args:get-arg "-testdata-csv"))
;;                   (match-data  (string-match "^([^/]+)/(.*)" (args:get-arg "-testdata-csv")))
;;                   (categorypatt (if match-data (list-ref match-data 1) "%"))
;;                   (setvarpatt  (if match-data
;;                                    (list-ref match-data 2)
;;                                    (args:get-arg "-testdata-csv")))
;;                   (runsdat     (rmt:get-runs-by-patt keys (or runpatt "%") 
;;                                                      (common:args-get-target) #f #f '("id" "runname" "state" "status" "owner" "event_time" "comment") 0))
;;                   (header      (db:get-header runsdat))
;;                   (access-mode (db:get-access-mode))
;;                   (testpatt    (common:args-get-testpatt #f))
;;                   (fields-spec (if (args:get-arg "-fields")
;;                                    (extract-fields-constraints (args:get-arg "-fields"))
;;                                    (list (cons "runs" (append keys (list "id" "runname" "state" "status" "owner" "event_time" "comment" "fail_count" "pass_count")))
;;                                          (cons "tests"  db:test-record-fields) ;; "id" "testname" "test_path")
;;                                          (list "steps" "id" "stepname"))))
;;                   (tests-spec  (let ((t (alist-ref "tests" fields-spec equal?)))
;;                                  (if (and t (null? t)) ;; all fields
;;                                      db:test-record-fields
;;                                      t)))
;;                   (adj-tests-spec (delete-duplicates (if tests-spec (cons "id" tests-spec) db:test-record-fields))) 
;;                   (test-field-index (make-hash-table))
;;                   (runs (db:get-rows runsdat))
;;                   )
;;              (if (and tests-spec (not (null? tests-spec))) ;; do some validation and processing of the test-spec
;;                  (let ((invalid-tests-spec (filter (lambda (x)(not (member x db:test-record-fields))) tests-spec)))
;;                    (if (null? invalid-tests-spec)
;;                        ;; generate the lookup map test-field-name => index-number
;;                        (let loop ((hed (car adj-tests-spec))
;;                                   (tal (cdr adj-tests-spec))
;;                                   (idx 0))
;;                          (hash-table-set! test-field-index hed idx)
;;                          (if (not (null? tal))(loop (car tal)(cdr tal)(+ idx 1))))
;;                        (begin
;;                          (debug:print-error 0 *default-log-port* "Invalid test fields specified: " (string-intersperse invalid-tests-spec ", "))
;;                          (exit)))))
;;              (let* ((table-header (string-split "target,run,test,itempath,category,var,value,comment" ","))
;;                     (table-rows
;;                      (apply append (map  
;;                                     (lambda (run)
;;                                       (let* ((target (string-intersperse (map (lambda (x)
;;      							 (db:get-value-by-header run header x))
;;      						       keys) "/"))
;;                                              (statuses (string-split (or (args:get-arg "-status") "") ","))
;;                                              (run-id  (db:get-value-by-header run header "id"))
;;                                              (runname (db:get-value-by-header run header "runname")) 
;;                                              (states  (string-split (or (args:get-arg "-state") "") ","))
;;                                              (tests   (if tests-spec
;;                                                           (rmt:get-tests-for-run run-id testpatt states statuses #f #f #f 'testname 'asc ;; (db:get-tests-for-run dbstruct run-id testpatt '() '() #f #f #f 'testname 'asc 
;;                                                                              ;; use qryvals if test-spec provided
;;                                                                              (if tests-spec
;;                                                                                  (string-intersperse adj-tests-spec ",")
;;                                                                                  ;; db:test-record-fields
;;                                                                                  #f)
;;                                                                              #f
;;                                                                              'normal)
;;                                                           '())))
;;                                         (apply append
;;                                                (map
;;                                                 (lambda (test)
;;                                                   (let* (
;;                                                          (test-id      (if (member "id"           tests-spec)(get-value-by-fieldname test test-field-index "id"          ) #f)) ;; (db:test-get-id         test))
;;                                                          (testname     (if (member "testname"     tests-spec)(get-value-by-fieldname test test-field-index "testname"    ) #f)) ;; (db:test-get-testname   test))
;;                                                          (itempath     (if (member "item_path"    tests-spec)(get-value-by-fieldname test test-field-index "item_path"   ) #f)) ;; (db:test-get-item-path  test))
;;                                                          (fullname     (conc testname
;;                                                                              (if (equal? itempath "")
;;                                                                                  "" 
;;                                                                                  (conc "/" itempath ))))
;;                                                          (testdat-raw (map vector->list (rmt:read-test-data-varpatt run-id test-id categorypatt setvarpatt)))
;;                                                          (testdat (filter
;;                                                                    (lambda (x)
;;                                                                      (not (equal? "logpro"
;;                                                                                   (list-ref x 10))))
;;                                                                    testdat-raw)))
;;                                                     (map 
;;                                                      (lambda (item)
;;                                                        (receive (id test_id category
;;                                                                     variable value expected
;;                                                                     tol units comment status type)
;;                                                            (apply values item)
;;                                                          (list target runname testname itempath category variable value comment)))
;;                                                      testdat)))
;;                                                 tests))))
;;                                     runs))))
;;                (print (string-join table-header ","))
;;                (for-each (lambda(table-row)
;;                            (print (string-join (map ->string table-row) ",")))
;;      
;;                          
;;                                  table-rows))))
;;        (set! *didsomething* #t)
;;        (bdat-time-to-exit-set! *bdat* #t))
;;      
;;      
;;      
;;      ;; NOTE: list-runs and list-db-targets operate on local db!!!
;;      ;;
;;      ;; IDEA: megatest list -runname blah% ...
;;      ;;
;;      (if (or (args:get-arg "-list-runs")
;;      	(args:get-arg "-list-db-targets"))
;;          (if (launch:setup)
;;      	(let* (;; (dbstruct    (make-dbr:dbstruct path: *toppath* local: (args:get-arg "-local")))
;;      	       (runpatt     (args:get-arg "-list-runs"))
;;                     (access-mode (db:get-access-mode))
;;      	       (testpatt    (common:args-get-testpatt #f))
;;      	       ;; (if (args:get-arg "-testpatt") 
;;      	       ;;  	        (args:get-arg "-testpatt") 
;;      	       ;;  	        "%"))
;;      	       (keys        (rmt:get-keys)) ;; (db:get-keys dbstruct))
;;      	       ;; (runsdat  (db:get-runs dbstruct runpatt #f #f '()))
;;      	;; (runsdat     (rmt:get-runs-by-patt keys (or runpatt "%") (common:args-get-target) ;; (db:get-runs-by-patt dbstruct keys (or runpatt "%") (common:args-get-target)
;;      	;; 		           	 #f #f '("id" "runname" "state" "status" "owner" "event_time" "comment") 0))
;;      	       (runsdat     (rmt:get-runs-by-patt keys (or runpatt "%") 
;;                                                        (common:args-get-target) #f #f '("id" "runname" "state" "status" "owner" "event_time" "comment") 0))
;;      	       (runstmp     (db:get-rows runsdat))
;;      	       (header      (db:get-header runsdat))
;;      	       ;; this is "-since" support. This looks at last mod times of <run-id>.db files
;;      	       ;; and collects those modified since the -since time.
;;      	       (runs        runstmp)
;;                              ;; (if (and (not (null? runstmp))
;;      			;;        (args:get-arg "-since"))
;;      			;;   (let ((changed-ids (db:get-changed-run-ids (string->number (args:get-arg "-since")))))
;;      			;;     (let loop ((hed (car runstmp))
;;      			;;   	     (tal (cdr runstmp))
;;      			;;   	     (res '()))
;;      			;;       (let ((new-res (if (member (db:get-value-by-header hed header "id") changed-ids)
;;      			;;   		       (cons hed res)
;;      			;;   		       res)))
;;      			;;         (if (null? tal)
;;      			;;   	  (reverse new-res)
;;      			;;   	  (loop (car tal)(cdr tal) new-res)))))
;;      			;;   runstmp))
;;      	       (db-targets  (args:get-arg "-list-db-targets"))
;;      	       (seen        (make-hash-table))
;;      	       (dmode       (let ((d (args:get-arg "-dumpmode"))) ;; json, sexpr
;;      			      (if d (string->symbol d) #f)))
;;      	       (data        (make-hash-table))
;;      	       (fields-spec (if (args:get-arg "-fields")
;;      				(extract-fields-constraints (args:get-arg "-fields"))
;;      				(list (cons "runs" (append keys (list "id" "runname" "state" "status" "owner" "event_time" "comment" "fail_count" "pass_count")))
;;      				      (cons "tests"  db:test-record-fields) ;; "id" "testname" "test_path")
;;      				      (list "steps" "id" "stepname"))))
;;      	       (runs-spec   (let ((r (alist-ref "runs"  fields-spec equal?))) ;; the check is now unnecessary
;;      			      (if (and r (not (null? r))) r (list "id" ))))
;;      	       (tests-spec  (let ((t (alist-ref "tests" fields-spec equal?)))
;;      			      (if (and t (null? t)) ;; all fields
;;      				  db:test-record-fields
;;      				  t)))
;;      	       (adj-tests-spec (delete-duplicates (if tests-spec (cons "id" tests-spec) db:test-record-fields))) ;; '("id"))))
;;      	       (steps-spec  (alist-ref "steps" fields-spec equal?))
;;      	       (test-field-index (make-hash-table)))
;;      	  (if (and tests-spec (not (null? tests-spec))) ;; do some validation and processing of the test-spec
;;      	      (let ((invalid-tests-spec (filter (lambda (x)(not (member x db:test-record-fields))) tests-spec)))
;;      		(if (null? invalid-tests-spec)
;;      		    ;; generate the lookup map test-field-name => index-number
;;      		    (let loop ((hed (car adj-tests-spec))
;;      			       (tal (cdr adj-tests-spec))
;;      			       (idx 0))
;;      		      (hash-table-set! test-field-index hed idx)
;;      		      (if (not (null? tal))(loop (car tal)(cdr tal)(+ idx 1))))
;;      		    (begin
;;      		      (debug:print-error 0 *default-log-port* "Invalid test fields specified: " (string-intersperse invalid-tests-spec ", "))
;;      		      (exit)))))
;;      	  ;; Each run
;;      	  (for-each 
;;      	   (lambda (run)
;;      	     (let ((targetstr (string-intersperse (map (lambda (x)
;;      							 (db:get-value-by-header run header x))
;;      						       keys) "/")))
;;      	       (if db-targets
;;      		   (if (not (hash-table-ref/default seen targetstr #f))
;;      		       (begin
;;      			 (hash-table-set! seen targetstr #t)
;;      			 ;; (print "[" targetstr "]"))))
;;      			 (if (not dmode)
;;      			     (print targetstr)
;;      			     (hash-table-set! data "targets" (cons targetstr (hash-table-ref/default data "targets" '())))
;;      			     )))
;;      		   (let* ((run-id  (db:get-value-by-header run header "id"))
;;      			  (runname (db:get-value-by-header run header "runname")) 
;;      			  (states  (string-split (or (args:get-arg "-state") "") ","))
;;      			  (statuses (string-split (or (args:get-arg "-status") "") ","))
;;      			  (tests   (if tests-spec
;;      				       (rmt:get-tests-for-run run-id testpatt states statuses #f #f #f 'testname 'asc ;; (db:get-tests-for-run dbstruct run-id testpatt '() '() #f #f #f 'testname 'asc 
;;      							     ;; use qryvals if test-spec provided
;;      							     (if tests-spec
;;      								 (string-intersperse adj-tests-spec ",")
;;      								 ;; db:test-record-fields
;;      								 #f)
;;      							     #f
;;      							     'normal)
;;      				       '())))
;;      		     (case dmode
;;      		       ((json ods sexpr)
;;      			(if runs-spec
;;      			    (for-each 
;;      			     (lambda (field-name)
;;      			       (mutils:hierhash-set! data (conc (db:get-value-by-header run header field-name)) targetstr runname "meta" field-name))
;;      			     runs-spec)))
;;      			;; (mutils:hierhash-set! data (db:get-value-by-header run header "status")     targetstr runname "meta" "status"     )
;;      			;; (mutils:hierhash-set! data (db:get-value-by-header run header "state")      targetstr runname "meta" "state"      )
;;      			;; (mutils:hierhash-set! data (conc (db:get-value-by-header run header "id"))  targetstr runname "meta" "id"         )
;;      			;; (mutils:hierhash-set! data (db:get-value-by-header run header "event_time") targetstr runname "meta" "event_time" )
;;      			;; (mutils:hierhash-set! data (db:get-value-by-header run header "comment")    targetstr runname "meta" "comment"    )
;;      			;; ;; add last entry twice - seems to be a bug in hierhash?
;;      			;; (mutils:hierhash-set! data (db:get-value-by-header run header "comment")    targetstr runname "meta" "comment"    )
;;      		       (else
;;      			(if (null? runs-spec)
;;      			    (print "Run: " targetstr "/" runname 
;;      				   " status: " (db:get-value-by-header run header "state")
;;      				   " run-id: " run-id ", number tests: " (length tests)
;;      				   " event_time: " (db:get-value-by-header run header "event_time"))
;;      			    (begin
;;      			      (if (not (member "target" runs-spec))
;;      			          ;; (display (conc "Target: " targetstr))
;;      			          (display (conc "Run: " targetstr "/" runname " ")))
;;      			      (for-each
;;      			       (lambda (field-name)
;;      				 (if (equal? field-name "target")
;;      				     (display (conc "target: " targetstr " "))
;;      				     (display (conc field-name ": " (db:get-value-by-header run header (conc field-name)) " "))))
;;      			       runs-spec)
;;      			      (newline)))))
;;      		       
;;      		     (for-each 
;;      		      (lambda (test)
;;      		      	(handle-exceptions
;;      			 exn
;;      			 (begin
;;      			   (debug:print-error 0 *default-log-port* "Bad data in test record? " test)
;;      			   (debug:print-error 5 *default-log-port* "exn=" (condition->list exn))
;;      			   (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
;;      			   (print-call-chain (current-error-port)))
;;      			 (let* ((test-id      (if (member "id"           tests-spec)(get-value-by-fieldname test test-field-index "id"          ) #f)) ;; (db:test-get-id         test))
;;      				(testname     (if (member "testname"     tests-spec)(get-value-by-fieldname test test-field-index "testname"    ) #f)) ;; (db:test-get-testname   test))
;;      				(itempath     (if (member "item_path"    tests-spec)(get-value-by-fieldname test test-field-index "item_path"   ) #f)) ;; (db:test-get-item-path  test))
;;      				(comment      (if (member "comment"      tests-spec)(get-value-by-fieldname test test-field-index "comment"     ) #f)) ;; (db:test-get-comment    test))
;;      				(tstate       (if (member "state"        tests-spec)(get-value-by-fieldname test test-field-index "state"       ) #f)) ;; (db:test-get-state      test))
;;      				(tstatus      (if (member "status"       tests-spec)(get-value-by-fieldname test test-field-index "status"      ) #f)) ;; (db:test-get-status     test))
;;      				(event-time   (if (member "event_time"   tests-spec)(get-value-by-fieldname test test-field-index "event_time"  ) #f)) ;; (db:test-get-event_time test))
;;      				(rundir       (if (member "rundir"       tests-spec)(get-value-by-fieldname test test-field-index "rundir"      ) #f)) ;; (db:test-get-rundir     test))
;;      				(final_logf   (if (member "final_logf"   tests-spec)(get-value-by-fieldname test test-field-index "final_logf"  ) #f)) ;; (db:test-get-final_logf test))
;;      				(run_duration (if (member "run_duration" tests-spec)(get-value-by-fieldname test test-field-index "run_duration") #f)) ;; (db:test-get-run_duration test))
;;      				(fullname     (conc testname
;;      						    (if (equal? itempath "")
;;      							"" 
;;      							(conc "(" itempath ")")))))
;;      			   (case dmode
;;      			     ((json ods sexpr)
;;      			      (if tests-spec
;;      				  (for-each
;;      				   (lambda (field-name)
;;      				     (mutils:hierhash-set! data  (get-value-by-fieldname test test-field-index field-name) targetstr runname "data" (conc test-id) field-name))
;;      				   tests-spec)))
;;      			     ;; ;; (mutils:hierhash-set! data  fullname   targetstr runname "data" (conc test-id) "tname"     )
;;      			     ;;  (mutils:hierhash-set! data  testname   targetstr runname "data" (conc test-id) "testname"  )
;;      			     ;;  (mutils:hierhash-set! data  itempath   targetstr runname "data" (conc test-id) "itempath"  )
;;      			     ;;  (mutils:hierhash-set! data  comment    targetstr runname "data" (conc test-id) "comment"   )
;;      			     ;;  (mutils:hierhash-set! data  tstate     targetstr runname "data" (conc test-id) "state"     )
;;      			     ;;  (mutils:hierhash-set! data  tstatus    targetstr runname "data" (conc test-id) "status"    )
;;      			     ;;  (mutils:hierhash-set! data  rundir     targetstr runname "data" (conc test-id) "rundir"    )
;;      			     ;;  (mutils:hierhash-set! data  final_logf targetstr runname "data" (conc test-id) "final_logf")
;;      			     ;;  (mutils:hierhash-set! data  run_duration targetstr runname "data" (conc test-id) "run_duration")
;;      			     ;;  (mutils:hierhash-set! data  event-time targetstr runname "data" (conc test-id) "event_time")
;;      			     ;;  ;; add last entry twice - seems to be a bug in hierhash?
;;      			     ;;  (mutils:hierhash-set! data  event-time targetstr runname "data" (conc test-id) "event_time")
;;      			     ;;  )
;;      			     (else
;;      			      (if (and tstate tstatus event-time)
;;      				  (format #t
;;      					  "  Test: ~25a State: ~15a Status: ~15a Runtime: ~5@as Time: ~22a Host: ~10a\n"
;;      					  (if fullname fullname "")
;;      					  (if tstate   tstate   "")
;;      					  (if tstatus  tstatus  "")
;;      					  (get-value-by-fieldname test test-field-index "run_duration");;(if test     (db:test-get-run_duration test) "")
;;      					  (if event-time event-time "")
;;      					  (get-value-by-fieldname test test-field-index "host")) ;;(if test (db:test-get-host test)) "")
;;      				  (print "  Test: " fullname
;;      					 (if tstate  (conc " State: "  tstate)  "")
;;      					 (if tstatus (conc " Status: " tstatus) "")
;;      					 (if (get-value-by-fieldname test test-field-index "run_duration")
;;      					     (conc " Runtime: " (get-value-by-fieldname test test-field-index "run_duration"))
;;      					     "")
;;      					 (if event-time (conc " Time: " event-time) "")
;;      					 (if (get-value-by-fieldname test test-field-index "host")
;;      					     (conc " Host: " (get-value-by-fieldname test test-field-index "host"))
;;      					     "")))
;;      			      (if (not (or (equal? (get-value-by-fieldname test test-field-index "status") "PASS")
;;      					   (equal? (get-value-by-fieldname test test-field-index "status") "WARN")
;;      					   (equal? (get-value-by-fieldname test test-field-index "state")  "NOT_STARTED")))
;;      				  (begin
;;      				    (print   (if (get-value-by-fieldname test test-field-index "cpuload")
;;      						 (conc "         cpuload:  "   (get-value-by-fieldname test test-field-index "cpuload"))
;;      						 "") ;; (db:test-get-cpuload test)
;;      					     (if (get-value-by-fieldname test test-field-index "diskfree")
;;      						 (conc "\n         diskfree: " (get-value-by-fieldname test test-field-index "diskfree")) ;; (db:test-get-diskfree test)
;;      						 "")
;;      					     (if (get-value-by-fieldname test test-field-index "uname")
;;      						 (conc "\n         uname:    " (get-value-by-fieldname test test-field-index "uname")) ;; (db:test-get-uname test)
;;      						 "")
;;      					     (if (get-value-by-fieldname test test-field-index "rundir")
;;      						 (conc "\n         rundir:   " (get-value-by-fieldname test test-field-index "rundir")) ;; (db:test-get-rundir test)
;;      						 "")
;;      ;;					     "\n         rundir:   " (get-value-by-fieldname test test-field-index "") ;; (sdb:qry 'getstr ;; (filedb:get-path *fdb* 
;;      ;; 					     (db:test-get-rundir test) ;; )
;;      					     )
;;      				    ;; Each test
;;      				    ;; DO NOT remote run
;;      				    (let ((steps (rmt:get-steps-for-test run-id (db:test-get-id test)))) ;; (db:get-steps-for-test dbstruct run-id (db:test-get-id test))))
;;      				      (for-each 
;;      				       (lambda (step)
;;      					 (format #t 
;;      						 "    Step: ~20a State: ~10a Status: ~10a Time ~22a\n"
;;      						 (tdb:step-get-stepname step)
;;      						 (tdb:step-get-state step)
;;      						 (tdb:step-get-status step)
;;      						 (tdb:step-get-event_time step)))
;;      				       steps)))))))))
;;      		      (if (args:get-arg "-sort")
;;      			  (sort tests
;;      				(lambda (a-test b-test)
;;      				  (let* ((key    (args:get-arg "-sort"))
;;      					 (first  (get-value-by-fieldname a-test test-field-index key))
;;      					 (second (get-value-by-fieldname b-test test-field-index key)))
;;      				    ((cond 
;;      				      ((and (number? first)(number? second)) <)
;;      				      ((and (string? first)(string? second)) string<=?)
;;      				      (else equal?))
;;      				     first second))))
;;      			  tests))))))
;;      	   runs)
;;      	  (case dmode
;;      	    ((json)  (json-write data))
;;      	    ((sexpr) (pp (common:to-alist data))))
;;      	  (let* ((metadat-fields (delete-duplicates
;;      				  (append keys '( "runname" "time" "owner" "pass_count" "fail_count" "state" "status" "comment" "id"))))
;;      		 (run-fields    '(
;;      				  "testname"
;;      				  "item_path"
;;      				  "state"
;;      				  "status"
;;      				  "comment"
;;      				  "event_time"
;;      				  "host"
;;      				  "run_id"
;;      				  "run_duration"
;;      				  "attemptnum"
;;      				  "id"
;;      				  "archived"
;;      				  "diskfree"
;;      				  "cpuload"
;;      				  "final_logf"
;;      				  "shortdir"
;;      				  "rundir"
;;      				  "uname"
;;      				  )
;;      				)
;;      		 (newdat          (common:to-alist data))
;;      		 (allrundat       (if (null? newdat)
;;      				      '()
;;      				      (car (map cdr newdat)))) ;; (car (map cdr (car (map cdr newdat)))))
;;      		 (runs            (append
;;      				   (list "runs" ;; sheetname
;;      					 metadat-fields)
;;      				   (map (lambda (run)
;;      					  ;; (print "run: " run)
;;      					  (let* ((runname (car run))
;;      						 (rundat  (cdr run))
;;      						 (metadat (let ((tmp (assoc "meta" rundat)))
;;      							    (if tmp (cdr tmp) #f))))
;;      					    ;; (print "runname: " runname "\n\nrundat: " )(pp rundat)(print "\n\nmetadat: ")(pp metadat)
;;      					    (if metadat
;;      						(map (lambda (field)
;;      						       (let ((tmp (assoc field metadat)))
;;      							 (if tmp (cdr tmp) "")))
;;      						     metadat-fields)
;;      						(begin
;;      						  (debug:print 0 *default-log-port* "WARNING: meta data for run " runname " not found")
;;      						  '()))))
;;      					allrundat)))
;;      		 ;; '( ( "target" ( "runname" ( "data" ( "runid" ( "id . "37" ) ( ... ))))
;;      		 (run-pages      (map (lambda (targdat)
;;      					(let* ((target  (car targdat))
;;      					       (runsdat (cdr targdat)))
;;      					  (if runsdat
;;      					      (map (lambda (rundat)
;;      						     (let* ((runname  (car rundat))
;;      							    (rundat   (cdr rundat))
;;      							    (testsdat (let ((tmp (assoc "data" rundat)))
;;      									(if tmp (cdr tmp) #f))))
;;      						       (if testsdat
;;      							   (let ((tests (map (lambda (test)
;;      									       (let* ((test-id  (car test))
;;      										      (test-dat (cdr test)))
;;      										 (map (lambda (field)
;;      											(let ((tmp (assoc field test-dat)))
;;      											  (if tmp (cdr tmp) "")))
;;      										      run-fields)))
;;      									     testsdat)))
;;      							     ;; (print "Target: " target "/" runname " tests:")
;;      							     ;; (pp tests)
;;      							     (cons (conc target "/" runname)
;;      								   (cons (list (conc target "/" runname))
;;      									 (cons '()
;;      									       (cons run-fields tests)))))
;;      							   (begin
;;      							     (debug:print 4 *default-log-port* "WARNING: run " target "/" runname " appears to have no data")
;;      							     ;; (pp rundat)
;;      							     '()))))
;;      						   runsdat)
;;      					      '())))
;;      				      newdat)) ;; we use newdat to get target
;;      		 (sheets         (filter (lambda (x)
;;      					   (not (null? x)))
;;      					 (cons runs (map car run-pages)))))
;;      	    ;; (print "allrundat:")
;;      	    ;; (pp allrundat)
;;      	    ;; (print "runs:")
;;      	    ;; (pp runs)
;;      	    ;(print "sheets: ")
;;      	    ;; (pp sheets)
;;      	    (if (eq? dmode 'ods)
;;      		(let* ((tempdir    (conc "/tmp/" (current-user-name) "/" (pseudo-random-integer 10000) "_" (current-process-id)))
;;      		       (outputfile (or (args:get-arg "-o") "out.ods"))
;;      		       (ouf        (if (string-match (regexp "^[/~]+.*") outputfile) ;; full path?
;;      				       outputfile
;;      				       (begin
;;      					 (debug:print 0 *default-log-port* "WARNING: path given, " outputfile " is relative, prefixing with current directory")
;;      					 (conc (current-directory) "/" outputfile)))))
;;      		  (create-directory tempdir #t)
;;      		  (ods:list->ods tempdir ouf sheets))))
;;      	  ;; (system (conc "rm -rf " tempdir))
;;      	  (set! *didsomething* #t)
;; 	  (bdat-time-to-exit-set! *bdat* #t)
;; 	  ) ;; end if true branch (end of a let)
;; 	) ;; end if
;;          ) ;; end if -list-runs
;; 
;;      ;; list-waivers
;;      (if (and (args:get-arg "-list-waivers")
;;      	 (launch:setup))
;;          (let* ((runpatt     (or (args:get-arg "-runname") "%"))
;;      	   (testpatt    (common:args-get-testpatt #f))
;;      	   (keys        (rmt:get-keys)) 
;;      	   (runsdat     (rmt:get-runs-by-patt
;;      			 keys runpatt 
;;      			 (common:args-get-target) #f #f
;;      			 '("id" "runname" "state" "status" "owner" "event_time" "comment") 0))
;;      	   (runs        (db:get-rows runsdat))
;;      	   (header      (db:get-header runsdat))
;;      	   (results     (make-hash-table))  ;; [target] ( (testname/itempath . "comment") ... )
;;      	   (addtest     (lambda (target testname itempath comment)
;;      			  (hash-table-set! results target (cons (cons (conc testname "/" itempath) comment)
;;      								(hash-table-ref/default results target '())))))
;;      	   (last-target #f))
;;            (for-each
;;             (lambda (run)
;;      	 (let* ((run-id  (db:get-value-by-header run header "id"))
;;      		(target  (rmt:get-target run-id))
;;      		(runname (db:get-value-by-header run header "runname")) 
;;      		(tests   (rmt:get-tests-for-run
;;      			  run-id testpatt '("COMPLETED") '("WAIVED") #f #f #f 'testname 'asc							     ;; use qryvals if test-spec provided
;;      			  #f #f #f)))
;;      	   (if (not (equal? target last-target))
;;      	       (print "[" target "]"))
;;      	   (set! last-target target)
;;      	   (print "# " runname)
;;      	   (for-each
;;      	    (lambda (testdat)
;;      	      (let* ((testfullname (conc (db:test-get-testname testdat)
;;      					 (if (equal? "" (db:test-get-item-path testdat))
;;      					     ""
;;      					     (conc "/" (db:test-get-item-path testdat)))
;;      					 )))
;;      	      (print testfullname " " (db:test-get-comment testdat))))
;;      	    tests)))
;;             runs)
;;            (set! *didsomething* #t)))
;;            
;;      
;;      ;; get lock in db for full run for this directory
;;      ;; for all tests with deps
;;      ;;   walk tree of tests to find head tasks
;;      ;;   add head tasks to task queue
;;      ;;   add dependant tasks to task queue 
;;      ;;   add remaining tasks to task queue
;;      ;; for each task in task queue
;;      ;;   if have adequate resources
;;      ;;     launch task
;;      ;;   else
;;      ;;     put task in deferred queue
;;      ;; if still ok to run tasks
;;      ;;   process deferred tasks per above steps
;;      
;;      ;; run all tests are are Not COMPLETED and PASS or CHECK
;;      (if (or (args:get-arg "-runall")
;;      	(args:get-arg "-run")
;;      	(args:get-arg "-rerun-clean")
;;      	(args:get-arg "-rerun-all")
;;      	(args:get-arg "-runtests")
;;              (args:get-arg "-kill-rerun"))
;;          (let ((need-clean (or (args:get-arg "-rerun-clean")
;;                                (args:get-arg "-rerun-all")))
;;      	  (orig-cmdline (string-intersperse (argv) " ")))
;;            (general-run-call 
;;             "-runall"
;;             "run all tests"
;;             (lambda (target runname keys keyvals)
;;      	 (if (or (string-search "%" target)
;;      		 (string-search "%" runname)) ;; we are being asked to re-run multiple runs
;;      	     (let* ((run-specs (rmt:simple-get-runs runname #f #f target #f))) ;; list of simple-run records
;;      	       (debug:print-info 0 *default-log-port* "Pattern supplied for target or runname with "
;;      				 (length run-specs) " matches round. Running each in turn.")
;;      	       (if (null? run-specs)
;;      		   (debug:print 0 *default-log-port* "WARNING: No runs match target " target " and runname " runname))
;;      	       (for-each (lambda (spec) 
;;      			   (let* ((precmd     (if (args:get-arg "-precmd")(conc (args:get-arg "-precmd") " ") ""))
;;      				  (newcmdline (conc
;;      					       precmd
;;      					       (string-substitute
;;      						(conc "target " target)
;;      						(conc "target " (simple-run-target spec))
;;      						(string-substitute
;;      						 (conc "runname " runname)
;;      						 (conc "runname " (simple-run-runname spec))
;;      						 orig-cmdline)))))
;;      			     (debug:print 0 *default-log-port* "ORIG: " orig-cmdline)
;;      			     (debug:print 0 *default-log-port* "NEW:  " newcmdline)
;;      			     (system newcmdline)))
;;      			 run-specs))
;;      	     (handle-run-requests target runname keys keyvals need-clean))))))
;;      
;;      ;;======================================================================
;;      ;; run one test
;;      ;;======================================================================
;;      
;;      ;; 1. find the config file
;;      ;; 2. change to the test directory
;;      ;; 3. update the db with "test started" status, set running host
;;      ;; 4. process launch the test
;;      ;;    - monitor the process, update stats in the db every 2^n minutes
;;      ;; 5. as the test proceeds internally it calls megatest as each step is
;;      ;;    started and completed
;;      ;;    - step started, timestamp
;;      ;;    - step completed, exit status, timestamp
;;      ;; 6. test phone home
;;      ;;    - if test run time > allowed run time then kill job
;;      ;;    - if cannot access db > allowed disconnect time then kill job
;;      
;;      ;; == duplicated == (if (or (args:get-arg "-run")(args:get-arg "-runtests"))
;;      ;; == duplicated ==   (general-run-call 
;;      ;; == duplicated ==    "-runtests" 
;;      ;; == duplicated ==    "run a test" 
;;      ;; == duplicated ==    (lambda (target runname keys keyvals)
;;      ;; == duplicated ==      ;;
;;      ;; == duplicated ==      ;; May or may not implement it this way ...
;;      ;; == duplicated ==      ;;
;;      ;; == duplicated ==      ;; Insert this run into the tasks queue
;;      ;; == duplicated ==      ;; (open-run-close tasks:add tasks:open-db 
;;      ;; == duplicated ==      ;;    	     "runtests" 
;;      ;; == duplicated ==      ;;    	     user
;;      ;; == duplicated ==      ;;    	     target
;;      ;; == duplicated ==      ;;    	     runname
;;      ;; == duplicated ==      ;;    	     (args:get-arg "-runtests")
;;      ;; == duplicated ==      ;;    	     #f))))
;;      ;; == duplicated ==      (runs:run-tests target
;;      ;; == duplicated == 		     runname
;;      ;; == duplicated == 		     (common:args-get-testpatt #f) ;; (args:get-arg "-runtests")
;;      ;; == duplicated == 		     user
;;      ;; == duplicated == 		     args:arg-hash))))
;;      
;;      ;;======================================================================
;;      ;; Rollup into a run
;;      ;;======================================================================
;;      
;;      ;; (if (args:get-arg "-rollup")
;;      ;;     (general-run-call 
;;      ;;      "-rollup" 
;;      ;;      "rollup tests" 
;;      ;;      (lambda (target runname keys keyvals)
;;      ;;        (runs:rollup-run keys
;;      ;; 			keyvals
;;      ;; 			(or (args:get-arg "-runname")(args:get-arg ":runname") )
;;      ;; 			user))))
;;      
;;      ;;======================================================================
;;      ;; Lock or unlock a run
;;      ;;======================================================================
;;      
;;      (if (or (args:get-arg "-lock")(args:get-arg "-unlock"))
;;          (general-run-call 
;;           (if (args:get-arg "-lock") "-lock" "-unlock")
;;           "lock/unlock tests" 
;;           (lambda (target runname keys keyvals)
;;             (runs:handle-locking 
;;      		  target
;;      		  keys
;;      		  (or (args:get-arg "-runname")(args:get-arg ":runname") )
;;      		  (args:get-arg "-lock")
;;      		  (args:get-arg "-unlock")
;;      		  (bdat-user *bdat*)))))
;;      
;;      ;;======================================================================
;;      ;; Get paths to tests
;;      ;;======================================================================
;;      ;; Get test paths matching target, runname, and testpatt
;;      (if (or (args:get-arg "-test-files")(args:get-arg "-test-paths"))
;;          ;; if we are in a test use the MT_CMDINFO data
;;          (if (get-environment-variable "MT_CMDINFO")
;;      	(let* ((startingdir (current-directory))
;;      	       (cmdinfo   (common:read-encoded-string (get-environment-variable "MT_CMDINFO")))
;;      	       (transport (assoc/default 'transport cmdinfo))
;;      	       (testpath  (assoc/default 'testpath  cmdinfo))
;;      	       (test-name (assoc/default 'test-name cmdinfo))
;;      	       (runscript (assoc/default 'runscript cmdinfo))
;;      	       (db-host   (assoc/default 'db-host   cmdinfo))
;;      	       (run-id    (assoc/default 'run-id    cmdinfo))
;;      	       (itemdat   (assoc/default 'itemdat   cmdinfo))
;;      	       (state     (args:get-arg ":state"))
;;      	       (status    (args:get-arg ":status"))
;;      	       ;;(target    (args:get-arg "-target"))
;;      	       (target    (common:args-get-target))
;;      	       (toppath   (assoc/default 'toppath   cmdinfo)))
;;      	  (change-directory toppath)
;;      	  (if (not target)
;;      	      (begin
;;      		(debug:print-error 0 *default-log-port* "-target is required.")
;;      		(exit 1)))
;;      	  (if (not (launch:setup))
;;      	      (begin
;;      		(debug:print 0 *default-log-port* "Failed to setup, giving up on -test-paths or -test-files, exiting")
;;      		(exit 1)))
;;      	  (let* ((keys     (rmt:get-keys))
;;      		 ;; db:test-get-paths must not be run remote
;;      		 (paths    (tests:test-get-paths-matching keys target (args:get-arg "-test-files"))))
;;      	    (set! *didsomething* #t)
;;      	    (for-each (lambda (path)
;;      			(if (common:file-exists? path)
;;      			(print path)))	
;;      		      paths)))
;;      	;; else do a general-run-call
;;      	(general-run-call 
;;      	 "-test-files"
;;      	 "Get paths to test"
;;      	 (lambda (target runname keys keyvals)
;;      	   (let* ((db       #f)
;;      		  ;; DO NOT run remote
;;      		  (paths    (tests:test-get-paths-matching keys target (args:get-arg "-test-files"))))
;;      	     (for-each (lambda (path)
;;      			 (print path))
;;      		       paths))))))
;;      
;;      ;;======================================================================
;;      ;; Archive tests
;;      ;;======================================================================
;;      ;; Archive tests matching target, runname, and testpatt
;;      (if (equal? (args:get-arg "-archive") "replicate-db")
;;          (begin
;;                ;; check if source
;;                ;; check if megatest.db exist
;;               (launch:setup)
;;               (if (not (args:get-arg "-source"))
;;                   (begin 
;;                   (debug:print-info 1 *default-log-port* "Missing required argument -source <archive path>")
;;                   (exit 1)))
;;               (if (common:file-exists? (conc  *toppath* "/megatest.db"))
;;                   (begin  
;;                     (debug:print-info 1 *default-log-port* "File " (conc  *toppath* "/megatest.db") " already exists. Please remove it before trying to replicate db")
;;                     (exit 1)))
;;               (if (and (common:get-db-tmp-area) (> (length (directory   (common:get-db-tmp-area) #f)) 0))
;;                 (begin
;;                 (debug:print-info 1 *default-log-port* (common:get-db-tmp-area) " not empty. Please remove it before trying to replicate db")
;;                 (exit 1)))    
;;                ;; check if timestamp 
;;                (let* ((source (args:get-arg "-source"))
;;                      (src     (if (not (equal? (substring source 0 1) "/"))
;;                                   (conc (current-directory) "/" source)
;;                                   source))
;;                      (ts (if (args:get-arg "-time-stamp")   (args:get-arg "-time-stamp") "latest")))
;;                    (if  (common:directory-exists? src)
;;                        (begin 
;;                        (archive:restore-db src ts)
;;                  (set! *didsomething* #t))
;;             (begin
;;               (debug:print-error 1 *default-log-port* "Path " source " not found")
;;               (exit 1))))))   
;;          ;; else do a general-run-call
;;         (if (and (args:get-arg "-archive") (not (equal? (args:get-arg "-archive") "replicate-db"))) 
;;          (begin
;;            ;; for the archive get we need to preserve the starting dir as part of the target path
;;            (if (and (args:get-arg "-dest")
;;      	       (not (equal? (substring (args:get-arg "-dest") 0 1) "/")))
;;      	  (let ((newpath  (conc (current-directory) "/" (args:get-arg "-dest"))))
;;      	    (debug:print-info 1 *default-log-port* "Preserving original path to destination, was " (args:get-arg "-dest") ", now " newpath)
;;      	    (hash-table-set! args:arg-hash "-dest" newpath)))
;;            (general-run-call 
;;             "-archive"
;;             "Archive"
;;             (lambda (target runname keys keyvals)
;;      	 (operate-on 'archive target-in: target runname-in: runname )))))
;;      
;;      ;;======================================================================
;;      ;; Extract a spreadsheet from the runs database
;;      ;;======================================================================
;; 
;; ;; TODO: Reenable this functionality
;; 
;;      #;(if (args:get-arg "-extract-ods")
;;          (general-run-call
;;           "-extract-ods"
;;           "Make ods spreadsheet"
;;           (lambda (target runname keys keyvals)
;;             (let ((dbstruct   (make-dbr:dbstruct path: *toppath* local: #t))
;;      	     (outputfile (args:get-arg "-extract-ods"))
;;      	     (runspatt   (or (args:get-arg "-runname")(args:get-arg ":runname")))
;;      	     (pathmod    (args:get-arg "-pathmod")))
;;      	     ;; (keyvalalist (keys->alist keys "%")))
;;      	 (debug:print 2 *default-log-port* "Extract ods, outputfile: " outputfile " runspatt: " runspatt " keyvals: " keyvals)
;;      	 (db:extract-ods-file dbstruct outputfile keyvals (if runspatt runspatt "%") pathmod)
;;      	 (db:close-all dbstruct)
;;      	 (set! *didsomething* #t)))))
;;      
;;      ;;======================================================================
;;      ;; execute the test
;;      ;;    - gets called on remote host
;;      ;;    - receives info from the -execute param
;;      ;;    - passes info to steps via MT_CMDINFO env var (future is to use a dot file)
;;      ;;    - gathers host info and 
;;      ;;======================================================================
;;      
;;      (if (args:get-arg "-execute")
;;          (begin
;;            (launch:execute (args:get-arg "-execute"))
;;            (set! *didsomething* #t)))
;;      
;;      ;;======================================================================
;;      ;; recover from a test where the managing mtest was killed but the underlying
;;      ;; process might still be salvageable
;;      ;;======================================================================
;;      
;;      (if (args:get-arg "-recover-test")
;;          (let* ((params (string-split (args:get-arg "-recover-test") ",")))
;;            (if (> (length params) 1) ;; run-id and test-id
;;      	  (let ((run-id (string->number (car params)))
;;      		(test-id (string->number (cadr params))))
;;      	    (if (and run-id test-id)
;;      		(begin
;;      		  (launch:recover-test run-id test-id)
;;      		  (set! *didsomething* #t))
;;      		(begin
;;      		  (debug:print-error 0 *default-log-port* "bad run-id or test-id, must be integers")
;;      		  (exit 1)))))))
;;      
;;   (if (args:get-arg "-step")
;;       (begin
;;            (thread-sleep! 1.5)
;;            (megatest:step 
;;             (args:get-arg "-step")
;;             (or (args:get-arg "-state")(args:get-arg ":state"))
;;             (or (args:get-arg "-status")(args:get-arg ":status"))
;;             (args:get-arg "-setlog")
;;             (args:get-arg "-m"))
;;            ;; (if db (sqlite3:finalize! db))
;;            (set! *didsomething* #t)
;;            (thread-sleep! 1.5)))
;;          
;;      (if (or (args:get-arg "-setlog")       ;; since setting up is so costly lets piggyback on -test-status
;;      	;;     (not (args:get-arg "-step")))  ;; -setlog may have been processed already in the "-step" previous
;;      	;;     NEW POLICY - -setlog sets test overall log on every call.
;;      	(args:get-arg "-set-toplog")
;;      	(args:get-arg "-test-status")
;;      	(args:get-arg "-set-values")
;;      	(args:get-arg "-load-test-data")
;;      	(args:get-arg "-runstep")
;;      	(args:get-arg "-summarize-items"))
;;          (if (not (get-environment-variable "MT_CMDINFO"))
;;      	(begin
;;      	  (debug:print-error 0 *default-log-port* "MT_CMDINFO env var not set, commands -test-status, -runstep and -setlog must be called *inside* a megatest environment!")
;;      	  (exit 5))
;;      	(let* ((startingdir (current-directory))
;;      	       (cmdinfo   (common:read-encoded-string (get-environment-variable "MT_CMDINFO")))
;;      	       (transport (assoc/default 'transport cmdinfo))
;;      	       (testpath  (assoc/default 'testpath  cmdinfo))
;;      	       (test-name (assoc/default 'test-name cmdinfo))
;;      	       (runscript (assoc/default 'runscript cmdinfo))
;;      	       (db-host   (assoc/default 'db-host   cmdinfo))
;;      	       (run-id    (assoc/default 'run-id    cmdinfo))
;;      	       (test-id   (assoc/default 'test-id   cmdinfo))
;;      	       (itemdat   (assoc/default 'itemdat   cmdinfo))
;;      	       (work-area (assoc/default 'work-area cmdinfo))
;;      	       (db        #f) ;; (open-db))
;;      	       (state     (args:get-arg ":state"))
;;      	       (status    (args:get-arg ":status"))
;;      	       (stepname  (args:get-arg "-step")))
;;      	  (if (not (launch:setup))
;;      	      (begin
;;      		(debug:print 0 *default-log-port* "Failed to setup, exiting")
;;      		(exit 1)))
;;      
;;      	  (if (args:get-arg "-runstep")(debug:print-info 1 *default-log-port* "Running -runstep, first change to directory " work-area))
;;      	  (change-directory work-area)
;;      	  ;; can setup as client for server mode now
;;      	  ;; (client:setup)
;;      
;;      	  (if (args:get-arg "-load-test-data")
;;      	      ;; has sub commands that are rdb:
;;      	      ;; DO NOT put this one into either rmt: or open-run-close
;;      	      (tdb:load-test-data run-id test-id))
;;      	  (if (args:get-arg "-setlog")
;;      	      (let ((logfname (args:get-arg "-setlog")))
;;      		(rmt:test-set-log! run-id test-id logfname)))
;;      	  (if (args:get-arg "-set-toplog")
;;      	      ;; DO NOT run remote
;;      	      (tests:test-set-toplog! run-id test-name (args:get-arg "-set-toplog")))
;;      	  (if (args:get-arg "-summarize-items")
;;      	      ;; DO NOT run remote
;;      	      (tests:summarize-items run-id test-id test-name #t)) ;; do force here
;;      	  (if (args:get-arg "-runstep")
;;      	      (if (null? remargs)
;;      		  (begin
;;      		    (debug:print-error 0 *default-log-port* "nothing specified to run!")
;;      		    (if db (sqlite3:finalize! db))
;;      		    (exit 6))
;;      		  (let* ((stepname   (args:get-arg "-runstep"))
;;      			 (logprofile (args:get-arg "-logpro"))
;;      			 (logfile    (conc stepname ".log"))
;;      			 (cmd        (if (null? remargs) #f (car remargs)))
;;      			 (params     (if cmd (cdr remargs) '()))
;;      			 (exitstat   #f)
;;      			 (shell      (let ((sh (get-environment-variable "SHELL") ))
;;      				       (if sh 
;;      					   (last (string-split sh "/"))
;;      					   "bash")))
;;      			 (redir      (case (string->symbol shell)
;;      				       ((tcsh csh ksh)    ">&")
;;      				       ((zsh bash sh ash) "2>&1 >")
;;      				       (else ">&")))
;;      			 (fullcmd    (conc "(" (string-intersperse 
;;      						(cons cmd params) " ")
;;      					   ") " redir " " logfile)))
;;      		    ;; mark the start of the test
;;      		    (rmt:teststep-set-status! run-id test-id stepname "start" "n/a" (args:get-arg "-m") logfile)
;;      		    ;; run the test step
;;      		    (debug:print-info 2 *default-log-port* "Running \"" fullcmd "\" in directory \"" startingdir)
;;      		    (change-directory startingdir)
;;      		    (set! exitstat (system fullcmd))
;;      		    (set! *globalexitstatus* exitstat)
;;      		    ;; (change-directory testpath)
;;      		    ;; run logpro if applicable ;; (process-run "ls" (list "/foo" "2>&1" "blah.log"))
;;      		    (if logprofile
;;      			(let* ((htmllogfile (conc stepname ".html"))
;;      			       (oldexitstat exitstat)
;;      			       (cmd         (string-intersperse (list "logpro" logprofile htmllogfile "<" logfile ">" (conc stepname "_logpro.log")) " ")))
;;      			  (debug:print-info 2 *default-log-port* "running \"" cmd "\"")
;;      			  (change-directory startingdir)
;;      			  (set! exitstat (system cmd))
;;      			  (set! *globalexitstatus* exitstat) ;; no necessary
;;      			  (change-directory testpath)
;;      			  (rmt:test-set-log! run-id test-id htmllogfile)))
;;      		    (let ((msg (args:get-arg "-m")))
;;      		      (rmt:teststep-set-status! run-id test-id stepname "end" exitstat msg logfile))
;;      		    )))
;;      	  (if (or (args:get-arg "-test-status")
;;      		  (args:get-arg "-set-values"))
;;      	      (let ((newstatus (cond
;;      				((number? status)       (if (equal? status 0) "PASS" "FAIL"))
;;      				((and (string? status)
;;      				      (string->number status))(if (equal? (string->number status) 0) "PASS" "FAIL"))
;;      				(else status)))
;;      		    ;; transfer relevant keys into a hash to be passed to test-set-status!
;;      		    ;; could use an assoc list I guess. 
;;      		    (otherdata (let ((res (make-hash-table)))
;;      				 (for-each (lambda (key)
;;      					     (if (args:get-arg key)
;;      						 (hash-table-set! res key (args:get-arg key))))
;;      					   (list ":value" ":tol" ":expected" ":first_err" ":first_warn" ":units" ":category" ":variable"))
;;      				 res)))
;;      		(if (and (args:get-arg "-test-status")
;;      			 (or (not state)
;;      			     (not status)))
;;      		    (begin
;;      		      (debug:print-error 0 *default-log-port* "You must specify :state and :status with every call to -test-status\n" help)
;;      		      (if (sqlite3:database? db)(sqlite3:finalize! db))
;;      		      (exit 6)))
;;      		(let* ((msg    (args:get-arg "-m"))
;;      		       (numoth (length (hash-table-keys otherdata))))
;;      		  ;; Convert to rpc inside the tests:test-set-status! call, not here
;;      		  (tests:test-set-status! run-id test-id state newstatus msg otherdata work-area: work-area))))
;;      	  (if (sqlite3:database? db)(sqlite3:finalize! db))
;;      	  (set! *didsomething* #t))))
;;      
;;      ;;======================================================================
;;      ;; Various helper commands can go below here
;;      ;;======================================================================
;;      
;;      (if (or (args:get-arg "-showkeys")
;;              (args:get-arg "-show-keys"))
;;          (let ((db #f)
;;      	  (keys #f))
;;            (if (not (launch:setup))
;;      	  (begin
;;      	    (debug:print 0 *default-log-port* "Failed to setup, exiting")
;;      	    (exit 1)))
;;            (set! keys (rmt:get-keys)) ;;  db))
;;            (debug:print 1 *default-log-port* "Keys: " (string-intersperse keys ", "))
;;            (if (sqlite3:database? db)(sqlite3:finalize! db))
;;            (set! *didsomething* #t)))
;;      
;;      (if (args:get-arg "-gui")
;;          (begin
;;            (debug:print 0 *default-log-port* "Look at the dashboard for now")
;;            ;; (megatest-gui)
;;            (set! *didsomething* #t)))
;;      
;;      (if (args:get-arg "-create-megatest-area")
;;          (begin
;;            (genexample:mk-megatest.config)
;;            (set! *didsomething* #t)))
;;      
;;      (if (args:get-arg "-create-test")
;;          (let ((testname (args:get-arg "-create-test")))
;;            (genexample:mk-megatest-test testname)
;;            (set! *didsomething* #t)))
;;      
;;      ;;======================================================================
;;      ;; Update the database schema, clean up the db
;;      ;;======================================================================
;; 
;; ;; TODO: Restore this functionality
;; 
;;       #;(if (args:get-arg "-rebuild-db")
;;          (begin
;;            (if (not (launch:setup))
;;      	  (begin
;;      	    (debug:print 0 *default-log-port* "Failed to setup, exiting") 
;;      	    (exit 1)))
;;            ;; keep this one local
;;            ;; (open-run-close patch-db #f)
;;            (let ((dbstruct (db:setup #f areapath: *toppath*)))
;;              (common:cleanup-db dbstruct full: #t))
;;            (set! *didsomething* #t)))
;;      
;;      #;(if (args:get-arg "-cleanup-db")
;;          (begin
;;            (if (not (launch:setup))
;;      	  (begin
;;      	    (debug:print 0 *default-log-port* "Failed to setup, exiting") 
;;      	    (exit 1)))
;;            (let ((dbstruct (db:setup #f areapath: *toppath*)))
;;              (common:cleanup-db dbstruct))
;;            (set! *didsomething* #t)))
;;      
;;      (if (args:get-arg "-mark-incompletes")
;;          (begin
;;            (if (not (launch:setup))
;;      	  (begin
;;      	    (debug:print 0 *default-log-port* "Failed to setup, exiting")
;;      	    (exit 1)))
;;            (runs:find-and-mark-incomplete-and-check-end-of-run #f)
;;            (set! *didsomething* #t)))
;;      
;;      ;;======================================================================
;;      ;; Update the tests meta data from the testconfig files
;;      ;;======================================================================
;;      
;;      (if (args:get-arg "-update-meta")
;;          (begin
;;            (if (not (launch:setup))
;;      	  (begin
;;      	    (debug:print 0 *default-log-port* "Failed to setup, exiting") 
;;      	    (exit 1)))
;;            (runs:update-all-test_meta #f)
;;            (set! *didsomething* #t)))
;;      
;;      ;;======================================================================
;;      ;; Start a repl
;;      ;;======================================================================
;;      
;;      ;; fakeout readline
;;      ;; (include "readline-fix.scm")
;;      
;;      
;;      (when (args:get-arg "-diff-rep")
;;        (when (and
;;               (not (args:get-arg "-diff-html"))
;;               (not (args:get-arg "-diff-email")))
;;          (debug:print 0 *default-log-port* "Must specify -diff-html or -diff-email with -diff-rep")
;;          (set! *didsomething* 1)
;;          (exit 1))
;;        
;;        (let* ((toppath (launch:setup)))
;;          (do-diff-report
;;           (args:get-arg "-src-target")
;;           (args:get-arg "-src-runname")
;;           (args:get-arg "-target")
;;           (args:get-arg "-runname")
;;           (args:get-arg "-diff-html")
;;           (args:get-arg "-diff-email"))
;;          (set! *didsomething* #t)
;;          (exit 0)))
;;      
;;      (if (or (get-environment-variable "MT_RUNSCRIPT")
;;      	(args:get-arg "-repl")
;;      	(args:get-arg "-load"))
;;          (let* ((toppath (launch:setup)))
;; 		
;;      	        ;; (dbstruct (if (and toppath
;; 		;; 	      #;(common:on-homehost?))
;; 		;; 	 (db:setup #f) ;; sets up main.db
;; 		;; 	 #f))) ;; make-dbr:dbstruct path: toppath local: (args:get-arg "-local")) #f)))
;; 	   (if *toppath*
;; 	       (cond
;; 		((get-environment-variable "MT_RUNSCRIPT")
;; 		 ;; How to run megatest scripts
;; 		 ;;
;; 		 ;; #!/bin/bash
;; 		 ;;
;; 		 ;; export MT_RUNSCRIPT=yes
;; 		 ;; megatest << EOF
;; 		 ;; (print "Hello world")
;; 		 ;; (exit)
;; 		 ;; EOF
;; 		 
;; 		 (repl))
;; 		(else
;; 		 (begin
;; 		   ;; (set! *db* dbstruct)
;; 		   ;; (import extras) ;; might not be needed
;; 		   ;; (import chicken.csi)
;; 		   ;; (import readline)
;; 		   #;(import apropos
;; 			   archivemod
;; 			   commonmod
;; 			   configfmod
;; 			   dbmod
;; 			   debugprint
;; 			   ezstepsmod
;; 			   launchmod
;; 			   processmod
;; 			   rmtmod
;; 			   runsmod
;; 			   servermod
;; 			   tasksmod
;; 			   testsmod)
;; 		   
;; 		   (set-history-length! 300)
;; 		   (load-history-from-file ".megatest_history")
;; 		   (current-input-port (make-linenoise-port))
;; 		   ;; (import (prefix sqlite3 sqlite3:)) ;; doesn't work ...
;; 		   
;; 		   ;; (if *use-new-readline*
;; 		   ;; 	  (begin
;; 		   ;; 	    (install-history-file (get-environment-variable "HOME") ".megatest_history") ;;  [homedir] [filename] [nlines])
;; 		   ;; 	    (current-input-port (make-readline-port "megatest> ")))
;; 		   ;; 	  (begin
;; 		   ;; 	    (gnu-history-install-file-manager
;; 		   ;; 	     (string-append
;; 		   ;; 	      (or (get-environment-variable "HOME") ".") "/.megatest_history"))
;; 		   ;; 	    (current-input-port (make-gnu-readline-port "megatest> "))))
;; 		   (if (args:get-arg "-repl")
;; 		       (repl)
;; 		       (load (args:get-arg "-load")))
;; 		   ;; (db:close-all dbstruct) <= taken care of by on-exit call
;; 		   )
;; 		 (exit)))
;; 	       (set! *didsomething* #t))))
;;      
;;      ;;======================================================================
;;      ;; Wait on a run to complete
;;      ;;======================================================================
;;      
;;      (if (and (args:get-arg "-run-wait")
;;      	 (not (or (args:get-arg "-run")
;;      		  (args:get-arg "-runtests")))) ;; run-wait is built into runtests now
;;          (begin
;;            (if (not (launch:setup))
;;      	  (begin
;;      	    (debug:print 0 *default-log-port* "Failed to setup, exiting") 
;;      	    (exit 1)))
;;            (operate-on 'run-wait)
;;            (set! *didsomething* #t)))
;;      
;;      ;; ;; ;; redo me ;; Not converted to use dbstruct yet
;;      ;; ;; ;; redo me ;;
;;      ;; ;; ;; redo me (if (args:get-arg "-convert-to-norm")
;;      ;; ;; ;; redo me     (let* ((toppath (setup-for-run))
;;      ;; ;; ;; redo me 	   (dbstruct (if toppath (make-dbr:dbstruct path: toppath local: #t))))
;;      ;; ;; ;; redo me       (for-each 
;;      ;; ;; ;; redo me        (lambda (field)
;;      ;; ;; ;; redo me 	 (let ((dat '()))
;;      ;; ;; ;; redo me 	   (debug:print-info 0 *default-log-port* "Getting data for field " field)
;;      ;; ;; ;; redo me 	   (sqlite3:for-each-row
;;      ;; ;; ;; redo me 	    (lambda (id val)
;;      ;; ;; ;; redo me 	      (set! dat (cons (list id val) dat)))
;;      ;; ;; ;; redo me 	    (db:get-db db run-id)
;;      ;; ;; ;; redo me 	    (conc "SELECT id," field " FROM tests;"))
;;      ;; ;; ;; redo me 	   (debug:print-info 0 *default-log-port* "found " (length dat) " items for field " field)
;;      ;; ;; ;; redo me 	   (let ((qry (sqlite3:prepare db (conc "UPDATE tests SET " field "=? WHERE id=?;"))))
;;      ;; ;; ;; redo me 	     (for-each
;;      ;; ;; ;; redo me 	      (lambda (item)
;;      ;; ;; ;; redo me 		(let ((newval ;; (sdb:qry 'getid 
;;      ;; ;; ;; redo me 		       (cadr item))) ;; )
;;      ;; ;; ;; redo me 		  (if (not (equal? newval (cadr item)))
;;      ;; ;; ;; redo me 		      (debug:print-info 0 *default-log-port* "Converting " (cadr item) " to " newval " for test #" (car item)))
;;      ;; ;; ;; redo me 		  (sqlite3:execute qry newval (car item))))
;;      ;; ;; ;; redo me 	      dat)
;;      ;; ;; ;; redo me 	     (sqlite3:finalize! qry))))
;;      ;; ;; ;; redo me        (db:close-all dbstruct)
;;      ;; ;; ;; redo me        (list "uname" "rundir" "final_logf" "comment"))
;;      ;; ;; ;; redo me       (set! *didsomething* #t)))
;; 
;; ;; TODO: restore this functionality
;; 
;;      #;(if (args:get-arg "-import-megatest.db")
;;          (begin
;;            (db:multi-db-sync 
;;             (db:setup #f)
;;             'killservers
;;             'dejunk
;;             'adj-testids
;;             'old2new
;;             ;; 'new2old
;;             )
;;            (set! *didsomething* #t)))
;;      
;;      #;(when (args:get-arg "-sync-brute-force")
;;        ((server:get-bruteforce-syncer (db:setup #t) persist-until-sync: #t))
;;        (set! *didsomething* #t))
;;      
;;      #;(if (args:get-arg "-sync-to-megatest.db")
;;          (let* ((dbstruct (db:setup #f))
;;      	   (tmpdbpth (cdr (dbr:dbstruct-tmpdb dbstruct)))
;;      	   (lockfile (conc tmpdbpth ".lock"))
;;      	   (locked   (common:simple-file-lock lockfile)) 
;;      	   (res      (if locked
;;      			 (db:multi-db-sync 
;;      			  dbstruct
;;      			  'new2old)
;;      			 #f)))
;;            (if res
;;      	  (begin
;;      	    (common:simple-file-release-lock lockfile)
;;      	    (print "Synced " res " records to megatest.db"))
;;      	  (print "Skipping sync, there is a sync in progress."))
;;            (set! *didsomething* #t)))
;;      
;;      (if (args:get-arg "-sync-to")
;;          (let ((toppath (launch:setup)))
;;            (tasks:sync-to-postgres *configdat* (args:get-arg "-sync-to"))
;;            (set! *didsomething* #t)))
;;      
;;      (if (args:get-arg "-list-test-time")
;;           (let* ((toppath (launch:setup))) 
;;           (task:get-test-times)  
;;           (set! *didsomething* #t)))
;;      
;;      (if (args:get-arg "-list-run-time")
;;           (let* ((toppath (launch:setup))) 
;;           (task:get-run-times)  
;;           (set! *didsomething* #t)))
;;           
;;      (if (args:get-arg "-generate-html")
;;          (let* ((toppath (launch:setup)))
;;            (if (tests:create-html-tree #f)
;;                (debug:print-info 0 *default-log-port* "HTML output created in " toppath "/lt/page0.html")
;;                (debug:print 0 *default-log-port* "Failed to create HTML output in " toppath "/lt/runs-index.html"))
;;            (set! *didsomething* #t)))
;;      
;;      (if (args:get-arg "-generate-html-structure")
;;          (let* ((toppath (launch:setup)))
;;            ;(if (tests:create-html-tree #f)
;;       				(if (tests:create-html-summary #f)
;;                (debug:print-info 0 *default-log-port* "HTML output created in " toppath "/lt/targets.html")
;;                (debug:print 0 *default-log-port* "Failed to create HTML output in " toppath "/lt/runs-index.html"))
;;            (set! *didsomething* #t)))
;;      
;;      (if (args:get-arg "-syscheck")
;;          (begin
;;            (mutils:syscheck common:raw-get-remote-host-load
;;      		       server:get-best-guess-address
;;      		       configf:read-config)
;;            (set! *didsomething* #t)))
;;      
;;      (if (args:get-arg "-extract-skeleton")
;;          (let* ((toppath (launch:setup)))
;;            (genexample:extract-skeleton-area (args:get-arg "-extract-skeleton"))
;;            (set! *didsomething* #t)))
;;      
;;      ;;======================================================================
;;      ;; Exit and clean up
;;      ;;======================================================================
;;      
;;      (if (not *didsomething*)
;;          (debug:print 0 *default-log-port* help)
;;          (bdat-time-to-exit-set! *bdat* #t)
;;          )
;;      ;;(debug:print-info 13 *default-log-port* "thread-join! watchdog")
;;      
;;      ;; join the watchdog thread if it has been thread-start!ed  (it may not have been started in the case of a server that never enters running state)
;;      ;;   (symbols returned by thread-state: created ready running blocked suspended sleeping terminated dead)
;;      ;; TODO: for multiple areas, we will have multiple watchdogs; and multiple threads to manage
;;      #;(let* ((watchdog (bdat-watchdog *bdat*)))
;;        (if (thread? watchdog)
;; 	   (case (thread-state watchdog)
;; 	     ((ready running blocked sleeping terminated dead)
;; 	      (thread-join! watchdog)))))
;;      
;;      (bdat-time-to-exit-set! *bdat* #t)
;;      
;;      (if (not (eq? *globalexitstatus* 0))
;;          (if (or (args:get-arg "-run")(args:get-arg "-runtests")(args:get-arg "-runall"))
;;              (begin
;; 	       (debug:print 0 *default-log-port* "NOTE: Subprocesses with non-zero exit code detected: " *globalexitstatus*)
;; 	       (exit 0))
;;              (case *globalexitstatus*
;; 	       ((0)(exit 0))
;; 	       ((1)(exit 1))
;; 	       ((2)(exit 2))
;; 	       (else (exit 3)))))
;;      )
;; 
;; ;; (import megatest-main commonmod)
;; ;; (import srfi-18)


Modified mtver.scm from [88befd643e] to [d95956535a].

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(declare (unit mtver))

(module mtver *

(import scheme chicken.module)

(define megatest-version 1.6584)


)







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>


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(declare (unit mtver))

(module mtver *

(import scheme chicken.module)

;; (define megatest-version 1.6584)
(define megatest-version 2.001)

)

Modified pgdb.scm from [33d4965c91] to [d568c66421].

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(import scheme
	chicken.base
	chicken.condition
	chicken.string
	chicken.sort
	
	list-utils
	postgresql
	srfi-1
	srfi-69
	typed-records
	
	(prefix dbi dbi:)
	configfmod
	(prefix mtargs args:)







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(import scheme
	chicken.base
	chicken.condition
	chicken.string
	chicken.sort
	
	list-utils
	;; postgresql
	srfi-1
	srfi-69
	typed-records
	
	(prefix dbi dbi:)
	configfmod
	(prefix mtargs args:)

Modified rmtmod.scm from [e5bd6bd6c5] to [6232f78f49].

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;;======================================================================
;; Copyright 2017, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================





(declare (unit rmtmod))

(declare (uses apimod))
(declare (uses commonmod))
(declare (uses configfmod))
(declare (uses dbmod))
(declare (uses debugprint))
(declare (uses itemsmod))
(declare (uses mtargs))
(declare (uses mtver))
(declare (uses pgdb))
(declare (uses portloggermod))
(declare (uses servermod))
(declare (uses tasksmod))



(module rmtmod
	*
	
(import scheme
		
	chicken.base

|


















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;;======================================================================
;; Copyright 2022, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

;; generate entries for ~/.megatestrc with the following
;;
;;  grep define ../rmt.scm | grep rmt: |perl -pi -e 's/\(define\s+\((\S+)\W.*$/\1/'|sort -u

(declare (unit rmtmod))

(declare (uses apimod))
(declare (uses commonmod))
(declare (uses configfmod))
(declare (uses dbmod))
(declare (uses debugprint))
(declare (uses itemsmod))
(declare (uses mtargs))
(declare (uses mtver))
(declare (uses pgdb))
(declare (uses portloggermod))
(declare (uses servermod))
(declare (uses tasksmod))
(declare (uses ulex))
(declare (uses dbmgrmod))

(module rmtmod
	*
	
(import scheme
		
	chicken.base
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	chicken.process-context.posix
	chicken.sort
	chicken.string
	;; chicken.tcp
	chicken.random
	chicken.time
	chicken.time.posix
	(prefix sqlite3 sqlite3:)
	
	directory-utils
	format
	;; http-client
	;; intarweb
	matchable
	md5
	message-digest
	nng ;; nanomsg
	(prefix base64 base64:)
	(prefix sqlite3 sqlite3:)
	regex
	s11n
	;; spiffy
	;; spiffy-directory-listing
	;; spiffy-request-vars







<








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	chicken.process-context.posix
	chicken.sort
	chicken.string
	;; chicken.tcp
	chicken.random
	chicken.time
	chicken.time.posix

	
	directory-utils
	format
	;; http-client
	;; intarweb
	matchable
	md5
	message-digest
	;; nng ;; nanomsg
	(prefix base64 base64:)
	(prefix sqlite3 sqlite3:)
	regex
	s11n
	;; spiffy
	;; spiffy-directory-listing
	;; spiffy-request-vars
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	pgdb
	pkts
	portloggermod
	(prefix mtargs args:)
	servermod
	stml2
	tasksmod
	)

(defstruct alldat
  (areapath #f)
  (ulexdat  #f)
  )


;; (require-extension (srfi 18) extras tcp s11n)
;; 
;; 
;; (use  srfi-1 posix regex regex-case srfi-69 hostinfo md5 message-digest posix-extras)
;; 
;; (use spiffy uri-common intarweb http-client spiffy-request-vars intarweb spiffy-directory-listing)
;; 
;; Configurations for server
;; (tcp-buffer-size 2048)
;; (max-connections 2048) 

;; info about me as a server
;;
(defstruct servdat
  (host #f)
  (port #f)
  (uuid #f)
  (rep  #f)
  (dbfile #f)
  (api-url #f)
  (api-uri #f)
  (api-req #f)
  (status 'starting)
  (trynum 0) ;; count the number of ports we've tried
  ) 

(define (servdat->url sdat)
  (conc (servdat-host sdat)":"(servdat-port sdat)))

;; generate entries for ~/.megatestrc with the following
;;
;;  grep define ../rmt.scm | grep rmt: |perl -pi -e 's/\(define\s+\((\S+)\W.*$/\1/'|sort -u

(defstruct remotedat
  (conns (make-hash-table)) ;; apath/dbname => conndat
  )

(defstruct conndat
  (apath    #f)
  (dbname   #f)
  (fullname #f)
  (hostport #f)
  (ipaddr   #f)
  (port     #f)
  (socket   #f)
  (srvpkt   #f)
  (srvkey   #f)
  (lastmsg  0)
  (expires  0)
  (inport   #f)
  (outport  #f))

(define *srvpktspec*
  `((server (host    . h)
	    (port    . p)
	    (servkey . k)
	    (pid     . i)
	    (ipaddr  . a)
	    (dbpath  . d))))

;;======================================================================
;;  S U P P O R T   F U N C T I O N S
;;======================================================================

;; replaces *runremote*
(define *remotedat* (make-remotedat))

;; -> http://abc.com:900/<entrypoint>
;;
(define (conndat->uri conn entrypoint)
  (conc "http://"(conndat-ipaddr conn)":"(conndat-port conn)"/"entrypoint))

;; set up the api proc, seems like there should be a better place for this?
(define api-proc (make-parameter conc))
(api-proc api:process-request)

;; do we have a connection to apath dbname and
;; is it not expired? then return it
;;
;; else setup a connection
;;
;; if that fails, return '(#f "some reason") ;; NB// convert to raising an exception
;;
(define (rmt:get-conn remdat apath dbname)
  (let* ((fullname (db:dbname->path apath dbname))
	 (conn     (hash-table-ref/default (remotedat-conns remdat) fullname #f)))
    (if (and conn
	     (< (current-seconds) (conndat-expires conn)))
	conn
	#f)))

(define (rmt:find-main-server apath dbname)
  (let* ((pktsdir     (get-pkts-dir apath))
	 (all-srvpkts (get-all-server-pkts pktsdir *srvpktspec*))
	 ;; (dbpath      (conc apath "/" dbname))
	 (viable-srvs (get-viable-servers all-srvpkts dbname)))
    (get-the-server apath viable-srvs)))


(define *connstart-mutex* (make-mutex))
(define *last-main-start* 0)

;; looks for a connection to main, returns if have and not exired
;; creates new otherwise
;; 
;; connections for other servers happens by requesting from main
;;
;; TODO: This is unnecessarily re-creating the record in the hash table
;;
(define (rmt:open-main-connection remdat apath)
  (let* ((fullpath (db:dbname->path apath "/.db/main.db"))
	 (conns    (remotedat-conns remdat))
	 (conn     (hash-table-ref/default conns fullpath #f))) ;; TODO - create call for this
    (cond
     ((and conn                                             ;; conn is NOT a socket, just saying ...
	   (< (current-seconds) (conndat-expires conn)))
      #t) ;; we are current and good to go - we'll deal elsewhere with a server that was killed or died 
     ((and conn
	   (>= (current-seconds)(conndat-expires conn)))
      (debug:print-info 0 *default-log-port* "connection to "fullpath" server expired. Reconnecting.")
      (if (conndat-socket conn)
	  (nng-close! (conndat-socket conn)))
      (hash-table-set! conns fullpath #f) ;; clean up
      (rmt:open-main-connection remdat apath))
     (else
      ;; Below we will find or create and connect to main
      (let* ((dbname         (db:run-id->dbname #f))
	     (the-srv        (rmt:find-main-server apath dbname))
	     (start-main-srv (lambda () ;; call IF there is no the-srv found
			       (mutex-lock! *connstart-mutex*)
			       (if (> (- (current-seconds) *last-main-start*) 5) ;; at least four seconds since last attempt to start main server
				   (begin
				     (api:run-server-process apath dbname)
				     (set! *last-main-start* (current-seconds))
				     (thread-sleep! 1)))
			       (mutex-unlock! *connstart-mutex*)
			       (rmt:open-main-connection remdat apath) ;; TODO: Add limit to number of tries
			       )))
	(if (not the-srv) ;; have server, try connecting to it
	    (start-main-srv)
	    (let* ((srv-addr (server-address the-srv)) ;; need serv
		   (ipaddr   (alist-ref 'ipaddr  the-srv))
		   (port     (alist-ref 'port    the-srv))
		   (srvkey   (alist-ref 'servkey the-srv))
		   (fullpath (db:dbname->path apath dbname))
		   
		   (new-the-srv (make-conndat
				 apath:   apath
				 dbname:  dbname
				 fullname: fullpath
				 hostport: srv-addr
				 socket: (open-nn-connection srv-addr)
				 ipaddr: ipaddr
				 port: port
				 srvpkt: the-srv
				 srvkey: srvkey ;; generated by rmt:get-signature on the server side
				 lastmsg: (current-seconds)
				 expires: (+ (current-seconds) 60) ;; this needs to be gathered during the ping
				 )))
	      (hash-table-set! conns fullpath new-the-srv)))
	#t)))))

;; NB// remdat is a remotedat struct
;;
(define (rmt:general-open-connection remdat apath dbname #!key (num-tries 5))
  (assert (not (equal? dbname ".db/main.db")) "ERROR: general-open-connection should never be called with main as the db")
  (let* ((mdbname  (db:run-id->dbname #f))
	 (fullname (db:dbname->path apath dbname))
	 (conns    (remotedat-conns remdat))
	 (mconn    (rmt:get-conn remdat apath mdbname)))
    (if (and mconn
	     (not (debug:print-logger)))
	(begin
	  (debug:print-info 0 *default-log-port* "Turning on logging to main, look in logs dir for main log.")
	  (debug:print-logger rmt:log-to-main)))
    (cond
     ((or (not mconn) ;; no channel open to main?
	  (< (conndat-expires mconn)(+ (current-seconds) 2))) ;; restablish connection if less than 2 seconds on the lease
      (if mconn ;; previously opened - clean up NB// consolidate this with the similar code in open main above
	  (begin
	    (debug:print-info 0 *default-log-port* "Clearing out connection to main that has expired.")
	    (nng-close! (conndat-socket mconn))
	    (hash-table-set! conns fullname #f)))
      (rmt:open-main-connection remdat apath)
      (rmt:general-open-connection remdat apath mdbname))
     ((not (rmt:get-conn remdat apath dbname))                 ;; no channel open to dbname?     
      (let* ((res (rmt:send-receive-real remdat apath mdbname 'get-server `(,apath ,dbname))))
	(case res
	  ((server-started)
	   (if (> num-tries 0)
	       (begin
		 (thread-sleep! 2)
		 (rmt:general-open-connection remdat apath dbname num-tries: (- num-tries 1)))
	       (begin
		 (debug:print-error 0 *default-log-port* "Failed to start servers needed or open channel to "apath", "dbname)
		 (exit 1))))
	  (else
	   (if (list? res) ;; server has been registered and the info was returned. pass it on.
	       (begin ;;  ("192.168.0.9" 53817
		      ;;  "5e34239f48e8973b3813221e54701a01" "24310"
		      ;;  "192.168.0.9"
		      ;;  "/home/matt/data/megatest/tests/simplerun"
		 ;;  ".db/1.db")
		 (match
		  res
		  ((host port servkey pid ipaddr apath dbname)
		   (debug:print-info 0 *default-log-port* "got "res)
		   (hash-table-set! conns
				    fullname
				    (make-conndat
				     apath: apath
				     dbname: dbname
				     hostport: (conc host":"port)
				     socket: (open-nn-connection (conc host":"port))
				     ipaddr: ipaddr
				     port: port
				     srvkey: servkey
				     lastmsg: (current-seconds)
				     expires: (+ (current-seconds) 60))))
		  (else
		   (debug:print-info 0 *default-log-port* "return data from starting server did not match host port servkey pid ipaddr apath dbname " res)))
		 res)
	       (begin
		 (debug:print-info 0 *default-log-port* "Unexpected result: " res)
		 res)))))))
    
    #t))

;;======================================================================

;; FOR DEBUGGING SET TO #t
;; (define *localmode* #t)
(define *localmode* #f)
(define *dbstruct* (make-dbr:dbstruct))

;; Defaults to current area
;;
(define (rmt:send-receive cmd rid params #!key (attemptnum 1)(area-dat #f))
  ;; (if (not *remotedat*)(set! *remotedat* (make-remotedat)))
  (let* ((apath      *toppath*)
	 (remdat     *remotedat*)
	 (conns      (remotedat-conns remdat)) ;; just checking that remdat is a remotedat
	 (dbname     (db:run-id->dbname rid)))
    (if *localmode*
	(let* ((dbdat    (dbr:dbstruct-get-dbdat *dbstruct* dbname))
	       (indat    `((cmd . ,cmd)(params . ,params))))
	  (api:process-request *dbstruct* indat)
	  ;; (api:process-request dbdat indat)
	  )
	(begin
	  (rmt:open-main-connection remdat apath)
	  (if rid (rmt:general-open-connection remdat apath dbname))
	  (rmt:send-receive-real remdat apath dbname cmd params)))))

#;(define (rmt:send-receive-setup conn)
  (if (not (conndat-inport conn))
      (let-values (((i o) (tcp-connect (conndat-ipaddr conn)
				       (conndat-port conn))))
	(conndat-inport-set! conn i)
	(conndat-outport-set! conn o))))
  
;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; sometime in the future
;;
(define (rmt:send-receive-real remdat apath dbname cmd params)
  (let* ((conn (rmt:get-conn remdat apath dbname)))
    (assert conn "FATAL: rmt:send-receive-real called without the needed channels opened")
    (assert (conndat-socket conn) "FATAL: rmt:send-receive-real called without the channel socket opened.")
    (let* ((soc     (conndat-socket conn))
	   (key     #f)
	   (host    (conndat-ipaddr conn))
	   (port    (conndat-port   conn))
	   (payload `((cmd    . ,cmd)
		      (key    . ,(conndat-srvkey conn))
		      (params . ,params)))
	   (res      (send-receive-nn soc ;; (open-send-receive-nn (conc host":"port)
				      (sexpr->string payload))))
      (if (member res '("#<unspecified>")) ;; TODO - fix this in string->sexpr
	  #f
	  (string->sexpr res)))))

;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; sometime in the future.
;;
;; Purpose - call the main.db server and request a server be started
;; for the given area path and dbname
;;
;; (define (rmt:send-receive-server-start remdat apath dbname)
;;   (let* ((conn (rmt:get-conn remdat apath dbname)))
;;     (assert conn "FATAL: Unable to connect to db "apath"/"dbname)
;;     #;(let* ((res      (with-input-from-request
;; 		      (conndat->uri conn "api") 
;; 		      `((params . (,apath ,dbname)))
;; 		      read-string)))
;;       (string->sexpr res))))

(define (rmt:print-db-stats)
  (let ((fmtstr "~40a~7-d~9-d~20,2-f")) ;; "~20,2-f"
    (debug:print 18 *default-log-port* "DB Stats, "(seconds->year-week/day-time (current-seconds))"\n=====================")
    (debug:print 18 *default-log-port* (format #f "~40a~8a~10a~10a" "Cmd" "Count" "TotTime" "Avg"))
    (for-each (lambda (cmd)
		(let ((cmd-dat (hash-table-ref *db-stats* cmd)))
		  (debug:print 18 *default-log-port* (format #f fmtstr cmd (vector-ref cmd-dat 0) (vector-ref cmd-dat 1) (/ (vector-ref cmd-dat 1)(vector-ref cmd-dat 0))))))
	      (sort (hash-table-keys *db-stats*)
		    (lambda (a b)
		      (> (vector-ref (hash-table-ref *db-stats* a) 0)
			 (vector-ref (hash-table-ref *db-stats* b) 0)))))))

(define (rmt:get-max-query-average run-id)
  (mutex-lock! *db-stats-mutex*)
  (let* ((runkey (conc "run-id=" run-id " "))
	 (cmds   (filter (lambda (x)
			   (substring-index runkey x))
			 (hash-table-keys *db-stats*)))
	 (res    (if (null? cmds)
		     (cons 'none 0)
		     (let loop ((cmd (car cmds))
				(tal (cdr cmds))
				(max-cmd (car cmds))
				(res 0))
		       (let* ((cmd-dat (hash-table-ref *db-stats* cmd))
			      (tot     (vector-ref cmd-dat 0))
			      (curravg (/ (vector-ref cmd-dat 1) (vector-ref cmd-dat 0))) ;; count is never zero by construction
			      (currmax (max res curravg))
			      (newmax-cmd (if (> curravg res) cmd max-cmd)))
			 (if (null? tal)
			     (if (> tot 10)
				 (cons newmax-cmd currmax)
				 (cons 'none 0))
			     (loop (car tal)(cdr tal) newmax-cmd currmax)))))))
    (mutex-unlock! *db-stats-mutex*)
    res))


;;======================================================================
;;
;; A C T U A L   A P I   C A L L S  
;;
;;======================================================================

;;======================================================================
;;  S E R V E R
;;======================================================================

(define (rmt:kill-server run-id)
  (rmt:send-receive 'kill-server #f (list run-id)))

(define (rmt:start-server run-id)
  (rmt:send-receive 'start-server #f (list run-id)))

(define (rmt:get-server-info apath dbname)
  (rmt:send-receive 'get-server-info #f (list apath dbname)))

;;======================================================================
;;  M I S C
;;======================================================================

(define (rmt:login run-id)
  (rmt:send-receive 'login run-id (list *toppath* megatest-version *my-signature*)))








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	pgdb
	pkts
	portloggermod
	(prefix mtargs args:)
	servermod
	stml2
	tasksmod











































































































































































































































	dbmgrmod

	ulex




	)



































































































;;======================================================================
;;
;; A C T U A L   A P I   C A L L S  
;;
;;======================================================================














;;======================================================================
;;  M I S C
;;======================================================================

(define (rmt:login run-id)
  (rmt:send-receive 'login run-id (list *toppath* megatest-version *my-signature*)))

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		     dbh
		     spec-id target run-name state status owner event-time comment fail-count pass-count  area-id last-update publish-time))
		       (let* ((smallest-time (hash-table-ref/default smallest-last-update-time "smallest-time" #f)))
             (if (or (not smallest-time) (< last-update smallest-time))
        				(hash-table-set! smallest-last-update-time "smallest-time" last-update))
             (tasks:run-id->mtpg-run-id dbh cached-info run-id area-info smallest-last-update-time))
		  #f)))))))

(define (tasks:sync-test-gen-data dbh cached-info test-data-ids smallest-last-update-time)
  (let ((test-ht (hash-table-ref cached-info 'tests))
        (data-ht (hash-table-ref cached-info 'data)))
    (for-each
     (lambda (test-data-id)
        (let* ((test-data-info  (rmt:get-data-info-by-id test-data-id))
               (data-id (db:test-data-get-id  test-data-info))







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		     spec-id target run-name state status owner event-time comment fail-count pass-count  area-id last-update publish-time))
		       (let* ((smallest-time (hash-table-ref/default smallest-last-update-time "smallest-time" #f)))
             (if (or (not smallest-time) (< last-update smallest-time))
        				(hash-table-set! smallest-last-update-time "smallest-time" last-update))
             (tasks:run-id->mtpg-run-id dbh cached-info run-id area-info smallest-last-update-time))
		  #f)))))))

(define (tasks:sync-test-gen-data dbh cached-info test-data-ids smallest-last-update-time)
  (let ((test-ht (hash-table-ref cached-info 'tests))
        (data-ht (hash-table-ref cached-info 'data)))
    (for-each
     (lambda (test-data-id)
        (let* ((test-data-info  (rmt:get-data-info-by-id test-data-id))
               (data-id (db:test-data-get-id  test-data-info))
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  (not (equal? (common:get-last-run-version)
               (common:version-signature))))

(define (common:api-changed?)
  (not (equal? (substring (->string megatest-version) 0 4)
               (substring (conc (common:get-last-run-version)) 0 4))))

;; host and port are used to ensure we are remove proper records
(define (rmt:server-shutdown host port)
  (let ((dbfile   (servdat-dbfile *server-info*)))
    (debug:print-info 0 *default-log-port* "dbfile is "dbfile)
    (if dbfile
	(let* ((am-server  (args:get-arg "-server"))
	       (dbfile     (args:get-arg "-db"))
	       (apath      *toppath*)
	       (remdat     *remotedat*)) ;; foundation for future fix
	  (if *dbstruct-db*
	      (let* ((dbdat      (db:get-dbdat *dbstruct-db* apath dbfile))
		     (db         (dbr:dbdat-db dbdat))
		     (inmem      (dbr:dbdat-db dbdat))
		     )
		;; do a final sync here
		(debug:print-info 0 *default-log-port* "Doing final sync for "apath" "dbfile" at "(current-seconds))
		(db:sync-inmem->disk *dbstruct-db* apath dbfile force-sync: #t)
		;; let's finalize here
		(debug:print-info 0 *default-log-port* "Finalizing db and inmem")
		(if (sqlite3:database? db)
		    (sqlite3:finalize! db)
		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, db is not a database, not finalizing..."))
		(if (sqlite3:database? inmem)
		    (sqlite3:finalize! inmem)
		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, inmem is not a database, not finalizing..."))
		(debug:print-info 0 *default-log-port* "Finalizing db and inmem complete"))
	      (debug:print-info 0 *default-log-port* "Db was never opened, no cleanup to do."))
	  (if (not am-server)
	      (debug:print-info 0 *default-log-port* "I am not a server, should NOT get here!")
	      (if (string-match ".*/main.db$" dbfile)
		  (let ((pkt-file (conc (get-pkts-dir *toppath*)
					"/" (servdat-uuid *server-info*)
					".pkt")))
		    (debug:print-info 0 *default-log-port* "removing pkt "pkt-file)
		    (delete-file* pkt-file)
		    (debug:print-info 0 *default-log-port* "Releasing lock (if any) for "dbfile ", host "host", port "port)
		    (db:with-lock-db
		     (servdat-dbfile *server-info*)
		     (lambda (dbh dbfile)
		       (db:release-lock dbh dbfile host port)))) ;; I'm not the server - should not have a lock to remove
		  (let* ((sdat *server-info*) ;; we have a run-id server
			 (host (servdat-host sdat))
			 (port (servdat-port sdat))
			 (uuid (servdat-uuid sdat))
			 (res  (rmt:deregister-server remdat *toppath* host port uuid dbfile)))
		    (debug:print-info 0 *default-log-port* "deregistered-server, res="res)
		    (debug:print-info 0 *default-log-port* "deregistering server "host":"port" with uuid "uuid)
		    )))))))

(define (std-exit-procedure)
  ;;(common:telemetry-log-close)
  (on-exit (lambda () 0))
  ;;(debug:print-info 13 *default-log-port* "std-exit-procedure called; *time-to-exit*="*time-to-exit*)
  (let ((no-hurry  (if (bdat-time-to-exit *bdat*) ;; hurry up
		       #f
		       (begin
			 (bdat-time-to-exit-set! *bdat* #t)
			 #t))))
    (debug:print-info 4 *default-log-port* "starting exit process, finalizing databases.")
    (if (and no-hurry (debug:debug-mode 18))
	(rmt:print-db-stats))
    (let ((th1 (make-thread
		(lambda () ;; thread for cleaning up, give it five seconds
		  (let* ((start-time (current-seconds)))
		    (if (and *server-info*
			     *unclean-shutdown*)
			(begin
			  (debug:print-info 0 *default-log-port* "Unclean server exit, calling server-shtudown")



			  (rmt:server-shutdown (servdat-host *server-info*)

					       (servdat-port *server-info*))))
		    (debug:print-info 0 *default-log-port* "Shutdown activities completed in "(- (current-seconds) start-time)" seconds"))
		  ;; (if *dbstruct-db* (db:close-all *dbstruct-db*)) ;; one second allocated
		  #;(if (bdat-task-db *bdat*)    ;; TODO: Check that this is correct for task db
		  (let ((db (cdr (bdat-task-db *bdat*))))
		  (if (sqlite3:database? db)
		  (begin
		  (debug:print-info 0 *default-log-port* "Closing down task db "db)







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  (not (equal? (common:get-last-run-version)
               (common:version-signature))))

(define (common:api-changed?)
  (not (equal? (substring (->string megatest-version) 0 4)
               (substring (conc (common:get-last-run-version)) 0 4))))


















































(define (std-exit-procedure)
  ;;(common:telemetry-log-close)
  (on-exit (lambda () 0))
  ;;(debug:print-info 13 *default-log-port* "std-exit-procedure called; *time-to-exit*="*time-to-exit*)
  (let ((no-hurry  (if (bdat-time-to-exit *bdat*) ;; hurry up
		       #f
		       (begin
			 (bdat-time-to-exit-set! *bdat* #t)
			 #t))))
    (debug:print-info 4 *default-log-port* "starting exit process, finalizing databases.")
    (if (and no-hurry (debug:debug-mode 18))
	(rmt:print-db-stats))
    (let ((th1 (make-thread
		(lambda () ;; thread for cleaning up, give it five seconds
		  (let* ((start-time (current-seconds)))
		    #;(if *db-serv-info*
			(let* ((host (servdat-host *db-serv-info*))
			       (port 	       (servdat-port *db-serv-info*)))
			  (debug:print-info 0 *default-log-port* "Shutting down server/responder.")
			  ;;
			  ;; TODO - add flushing/waiting on the work queue
			  ;;
			  (rmt:server-shutdown host port)
			  (portlogger:open-run-close portlogger:set-port port "released")))
				
		    (debug:print-info 0 *default-log-port* "Shutdown activities completed in "(- (current-seconds) start-time)" seconds"))
		  ;; (if *dbstruct-db* (db:close-all *dbstruct-db*)) ;; one second allocated
		  #;(if (bdat-task-db *bdat*)    ;; TODO: Check that this is correct for task db
		  (let ((db (cdr (bdat-task-db *bdat*))))
		  (if (sqlite3:database? db)
		  (begin
		  (debug:print-info 0 *default-log-port* "Closing down task db "db)
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      (thread-start! th2)
      (thread-join! th1)
      )
    )

  0)


(define (common:run-sync?)
    ;; (and (common:on-homehost?)
  (args:get-arg "-server"))

;; called in megatest.scm, host-port is string hostname:port
;;
;; NOTE: This is NOT called directly from clients as not all transports support a client running
;;       in the same process as the server. 
;;
;; conn is a conndat record
;;
(define (server:ping conn #!key (do-exit #f))
  (let* ((req (conndat-socket conn))
	 (srvkey (conndat-srvkey conn))
	 (msg (sexpr->string '(ping ,srvkey))))
    (send-receive-nn req msg))) ;; (server-ready? host port server-id))

;;======================================================================
;; http-transportmod.scm contents moved here
;;======================================================================

(define (http-transport:make-server-url hostport)
  (if (not hostport)
      #f
      (conc "http://" (car hostport) ":" (cadr hostport))))

;;======================================================================
;; S E R V E R
;; ======================================================================

(define (http-get-function fnkey)
  (hash-table-ref/default *http-functions* fnkey (lambda () "nothing here yet")))

;; Main entry point to start a server. was start-server
(define (rmt:run hostn)
  ;;  ;; Configurations for server
  ;;  (tcp-buffer-size 2048)
  ;;  (max-connections 2048) 
  (debug:print 2 *default-log-port* "PID: "(current-process-id)". Attempting to start the server ...")
  (let* ((db              #f) ;;        (open-db)) ;; we don't want the server to be opening and closing the db unnecesarily
	 (hostname        (get-host-name))
	 (ipaddrstr       (let ((ipstr (if (string=? "-" hostn)
					   ;; (string-intersperse (map number->string (u8vector->list (hostname->ip hostname))) ".")
					   (server:get-best-guess-address hostname)
					   #f)))
			    (if ipstr ipstr hostn))) ;; hostname))) 
	 (port            (portlogger:open-run-close portlogger:find-port))
	 ;; (link-tree-path  (common:get-linktree))
	 ;; (tmp-area        (common:get-db-tmp-area))
	 #;(start-file      (conc tmp-area "/.server-start")))
    (debug:print-info 0 *default-log-port* "portlogger recommended port: " port)
    (if *server-info*
	(begin
	  (servdat-host-set! *server-info* ipaddrstr)
	  (servdat-port-set! *server-info* port)
	  (servdat-status-set! *server-info* 'trying-port)
	  (servdat-trynum-set! *server-info* (+ (servdat-trynum *server-info*) 1)))
	(set! *server-info* (make-servdat host: ipaddrstr port: port)))
    (let* ((rep (rmt:try-start-server ipaddrstr port)))
      (let loop ((instr (nng-recv rep)))
	(let* ((data   (string->sexpr instr))
	       (res    (case data
			 ((quit) 'quit)
			 (else    (api:process-request *dbstruct-db* data))))
	       (resdat (sexpr->string res)))
	  (if (not (eq? res 'quit))
	      (begin
		(set! *db-last-access* (current-seconds))
		(nng-send rep resdat)
		(loop (nng-recv rep)))))))
    (debug:print-info 0 *default-log-port* "After server, should never see this")
    ;; server exit stuff here
    (let* ((portnum (servdat-port *server-info*))
	   (host    (servdat-host *server-info*)))
      (portlogger:open-run-close portlogger:set-port portnum "released")
      (if (not (equal? (get-host-name) host))
	  (debug:print-info 0 *default-log-port* "Server shutdown called for host "host", but we are on "(get-host-name))
	  (rmt:server-shutdown host portnum))
      ;; (bdat-time-to-exit-set! *bdat* #t) ;; tell on-exit to be fast as we've already cleaned up
      (portlogger:open-run-close portlogger:set-port port "released") ;; done in rmt:run
      ;; (debug:print-info 0 *default-log-port* "Max cached queries was    " *max-cache-size*)
      ;; (debug:print-info 0 *default-log-port* "Number of cached writes   " *number-of-writes*)
      ;; (debug:print-info 0 *default-log-port* "Average cached write time "
      ;; 		      (if (eq? *number-of-writes* 0)
      ;; 			  "n/a (no writes)"
      ;; 			  (/ *writes-total-delay*
      ;; 			     *number-of-writes*))
      ;; 		      " ms")
      ;; (debug:print-info 0 *default-log-port* "Number non-cached queries "  *number-non-write-queries*)
      ;; (debug:print-info 0 *default-log-port* "Average non-cached time   "
      ;; 		      (if (eq? *number-non-write-queries* 0)
      ;; 			  "n/a (no queries)"
      ;; 			  (/ *total-non-write-delay* 
      ;; 			     *number-non-write-queries*))
      ;; 		      " ms")
      
      (db:print-current-query-stats)
      (debug:print-info 0 *default-log-port* "Server shutdown complete. Exiting")
      )))

(define (rmt:try-start-server ipaddrstr portnum)
  (if *server-info* ;; update the server info as we might be trying next port
      (begin
	(servdat-host-set! *server-info* ipaddrstr)
	(servdat-port-set! *server-info* portnum)
	(servdat-status-set! *server-info* 'trying-port)
	(servdat-trynum-set! *server-info*
			     (+ (servdat-trynum *server-info*) 1)))
      (set! *server-info* (make-servdat host: ipaddrstr port: portnum)))
  (debug:print-info 0 *default-log-port* "rmt:try-start-server time="
		    (seconds->time-string (current-seconds))
		    " ipaddrsstr=" ipaddrstr
		    " portnum=" portnum)
  (assert (servdat? *server-info*) "FATAL: Must always have *server-info* properly set up by here.")
  (servdat-status-set! *server-info* 'starting)
  (servdat-port-set!   *server-info* portnum)
  (if (not (servdat-rep *server-info*))
      (let ((rep  (make-rep-socket)))
	(servdat-rep-set!    *server-info* rep)
	(socket-set! rep 'nng/recvtimeo 2000)))
  (let* ((rep (servdat-rep *server-info*)))
    (debug:print 0 *default-log-port* "INFO: Trying to start server on " ipaddrstr ":" portnum)
    (handle-exceptions
     exn
     (begin
       (print-error-message exn)
       (if (< portnum 64000)
	   (begin 
	     (debug:print 0 *default-log-port* "WARNING: attempt to start server failed. Trying again ...")
	     (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
	     (debug:print 5 *default-log-port* "exn=" (condition->list exn))
	     (portlogger:open-run-close portlogger:set-failed portnum)
	     (debug:print 0 *default-log-port* "WARNING: failed to start on portnum: " portnum ", trying next port")
	     ;; (thread-sleep! 0.1)
	     (rmt:try-start-server ipaddrstr
				   (portlogger:open-run-close portlogger:find-port)))
	   (begin
	     (print "ERROR: Tried and tried but could not start the server, stopping at port "portnum))))
     (nng-listen rep (conc "tcp://*:" portnum))
     rep)))

;;======================================================================
;; S E R V E R   U T I L I T I E S 
;;======================================================================

;;======================================================================
;; C L I E N T S
;;======================================================================

(define (rmt:get-time-to-cleanup)
  (let ((res #f))







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      (thread-start! th2)
      (thread-join! th1)
      )
    )

  0)






;; called in megatest.scm, host-port is string hostname:port
;;
;; NOTE: This is NOT called directly from clients as not all transports support a client running
;;       in the same process as the server. 
;;
;; conn is a conndat record
;;
#;(define (server:ping uconn #!key (do-exit #f))

  (let* ((srvkey (conndat-srvkey uconn))
	 (msg (sexpr->string '(ping ,srvkey))))
    (send-receive uconn 'ping msg))) ;; (server-ready? host port server-id))

;;======================================================================
;; http-transportmod.scm contents moved here
;;======================================================================

(define (http-transport:make-server-url hostport)
  (if (not hostport)
      #f
      (conc "http://" (car hostport) ":" (cadr hostport))))

;;======================================================================
;; S E R V E R
;; ======================================================================





(define (rmt:get-servers-info apath)




























































  (rmt:send-receive 'get-servers-info #f `(,apath)))




;; (define (http-get-function fnkey)







































;;   (hash-table-ref/default *http-functions* fnkey (lambda () "nothing here yet")))




;;======================================================================
;; C L I E N T S
;;======================================================================

(define (rmt:get-time-to-cleanup)
  (let ((res #f))
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  (set! *http-connections-next-cleanup* (+ (current-seconds) 10))
  (mutex-unlock! *http-mutex*))

(define (rmt:inc-requests-and-prep-to-close-all-connections)
  (mutex-lock! *http-mutex*)
  (set! *http-requests-in-progress* (+ 1 *http-requests-in-progress*)))

;;======================================================================
;; NEW SERVER METHOD
;;======================================================================

;; only use for main.db - need to re-write some of this :(
;;
(define (get-lock-db sdat dbfile host port)
  (assert host "FATAL: get-lock-db called with host not set.")
  (assert port "FATAL: get-lock-db called with port not set.")
  (let* ((dbh (db:open-run-db dbfile db:initialize-db)) ;; open-run-db creates a standard db with schema used by all situations
	 (res (db:get-iam-server-lock dbh dbfile host port)))
    ;; res => list then already locked, check server is responsive
    ;;     => #t then sucessfully got the lock
    ;;     => #f reserved for future use as to indicate something went wrong
    (match res
      ((owner_pid owner_host owner_port event_time)
       (if (server-ready? owner_host owner_port "abc")
	   #f      ;; locked by someone else
	   (begin  ;; locked by someone dead and gone
	     (debug:print 0 *default-log-port* "WARNING: stale lock - have to steal it. This may fail.")
	     (db:steal-lock-db dbh dbfile port))))
      (#t  #t) ;; placeholder so that we don't touch res if it is #t
      (else (set! res #f)))
    (sqlite3:finalize! dbh)
    res))


(define (register-server pkts-dir pkt-spec host port servkey ipaddr dbpath)
  (let* ((pkt-dat `((host    . ,host)
		    (port    . ,port)
		    (servkey . ,servkey)
		    (pid     . ,(current-process-id))
		    (ipaddr  . ,ipaddr)
		    (dbpath  . ,dbpath)))
	 (uuid    (write-alist->pkt
		   pkts-dir
		   pkt-dat
		   pktspec: pkt-spec
		   ptype: 'server)))
    (debug:print 0 *default-log-port* "Server on "host":"port" registered in pkt "uuid)
    uuid))

(define (get-pkts-dir #!optional (apath #f))
  (let* ((effective-toppath (or *toppath* apath)))
    (assert effective-toppath
	    "ERROR: get-pkts-dir called without *toppath* set. Exiting.")
    (let* ((pdir (conc effective-toppath "/.meta/srvpkts")))
      (if (file-exists? pdir)
	  pdir
	  (begin
	    (create-directory pdir #t)
	    pdir)))))

;; given a pkts dir read 
;;
(define (get-all-server-pkts pktsdir-in pktspec)
  (let* ((pktsdir  (if (file-exists? pktsdir-in)
		       pktsdir-in
		       (begin
			 (create-directory pktsdir-in #t)
			 pktsdir-in)))
	 (all-pkt-files (glob (conc pktsdir "/*.pkt"))))
    (map (lambda (pkt-file)
	   (read-pkt->alist pkt-file pktspec: pktspec))
	 all-pkt-files)))

(define (server-address srv-pkt)
  (conc (alist-ref 'host srv-pkt) ":"
	(alist-ref 'port srv-pkt)))
	
(define (server-ready? host port key) ;; server-address is host:port
  (let* ((data (sexpr->string  `((cmd . ping)
				 (key . ,key)
				 (params . ()))))
	 (res  (open-send-receive-nn (conc host ":" port) data)))
    (if res
	(string->sexpr res)
	res)))

; from the pkts return servers associated with dbpath
;; NOTE: Only one can be alive - have to check on each
;;       in the list of pkts returned
;;
(define (get-viable-servers serv-pkts dbpath)
  (let loop ((tail serv-pkts)
	     (res  '()))
    (if (null? tail)
	res ;; NOTE: sort by age so oldest is considered first
	(let* ((spkt (car tail)))
	  (loop (cdr tail)
		(if (equal? dbpath (alist-ref 'dbpath spkt))
		    (cons spkt res)
		    res))))))

(define (remove-pkts-if-not-alive serv-pkts)
  (filter (lambda (pkt)
	    (let* ((host (alist-ref 'host pkt))
		   (port (alist-ref 'port pkt))
		   (key  (alist-ref 'servkey  pkt))
		   (pktz (alist-ref 'Z        pkt))
		   (res  (server-ready? host port key)))
	      (if res
		  res
		  (let* ((pktsdir (get-pkts-dir *toppath*))
			 (pktpath (conc pktsdir"/"pktz".pkt")))
		    (debug:print 0 *default-log-port* "WARNING: pkt with no server "pktpath)
		    (delete-file* pktpath)
		    #f))))
	  serv-pkts))

;; from viable servers get one that is alive and ready
;;
(define (get-the-server apath serv-pkts)
  (let loop ((tail serv-pkts))
    (if (null? tail)
	#f
	(let* ((spkt  (car tail))
	       (host  (alist-ref 'ipaddr spkt))
	       (port  (alist-ref 'port spkt))
	       (dbpth (alist-ref 'dbpath spkt))
	       (srvkey (alist-ref 'Z spkt)) ;; (alist-ref 'srvkey spkt))
	       (addr  (server-address spkt)))
	  (if (server-ready? host port srvkey)
	      spkt
	      (loop (cdr tail)))))))

;; am I the "first" in line server? I.e. my D card is smallest
;; use Z card as tie breaker
;;
(define (get-best-candidate serv-pkts dbpath)
  (if (null? serv-pkts)
      #f
      (let loop ((tail serv-pkts)
		 (best  (car serv-pkts)))
	(if (null? tail)
	    best
	    (let* ((candidate (car tail))
		   (candidate-bd (string->number (alist-ref 'D candidate)))
		   (best-bd      (string->number (alist-ref 'D best)))
		   ;; bigger number is younger
		   (candidate-z  (alist-ref 'Z candidate))
		   (best-z       (alist-ref 'Z best))
		   (new-best     (cond
				  ((> best-bd candidate-bd) ;; best is younger than candidate
				   candidate)
				  ((< best-bd candidate-bd) ;; candidate is younger than best
				   best)
				  (else
				   (if (string>=? best-z candidate-z)
				       best
				       candidate))))) ;; use Z card as tie breaker
	      (if (null? tail)
		  new-best
		  (loop (cdr tail) new-best)))))))
	  

;;======================================================================
;; END NEW SERVER METHOD
;;======================================================================

;; if .db/main.db check the pkts
;; 
(define (rmt:wait-for-server pkts-dir db-file server-key)
  (let* ((sdat *server-info*))
    (let loop ((start-time (current-seconds))
	       (changed    #t)
	       (last-sdat  "not this"))
      (begin ;; let ((sdat #f))
	(thread-sleep! 0.01)
	(debug:print-info 0 *default-log-port* "Waiting for server alive signature")
	(mutex-lock! *heartbeat-mutex*)
	(set! sdat *server-info*)
	(mutex-unlock! *heartbeat-mutex*)
	(if (and sdat
		 (not changed)
		 (> (- (current-seconds) start-time) 2))
	    (begin
	      (servdat-status-set! sdat 'iface-stable)
	      (debug:print-info 0 *default-log-port* "Received server alive signature, now attempting to lock in server")
	      ;; create a server pkt in *toppath*/.meta/srvpkts
	      
	      ;; TODO:
	      ;;   1. change sdat to stuct
	      ;;   2. add uuid to struct
	      ;;   3. update uuid in sdat here
	      ;;
	      (servdat-uuid-set! sdat
				 (register-server
				  pkts-dir *srvpktspec*
				  (get-host-name)
				  (servdat-port sdat) server-key
				  (servdat-host sdat) db-file))
	      ;; (set! *my-signature* (servdat-uuid sdat)) ;; replace with Z, no, stick with proper key
	      ;; now read pkts and see if we are a contender
	      (let* ((all-pkts     (get-all-server-pkts pkts-dir *srvpktspec*))
		     (viables      (get-viable-servers all-pkts db-file))
		     (alive        (remove-pkts-if-not-alive viables))
		     (best-srv     (get-best-candidate alive db-file))
		     (best-srv-key (if best-srv (alist-ref 'servkey best-srv) #f))
		     (i-am-srv     (equal? best-srv-key server-key))
		     (delete-pkt   (lambda ()
				     (let* ((pktfile (conc (get-pkts-dir *toppath*)
							 "/" (servdat-uuid *server-info*)
							 ".pkt")))
				       (debug:print-info 0 *default-log-port* "Attempting to remove bogus pkt file "pktfile)
				       (delete-file* pktfile))))) ;; remove immediately instead of waiting for on-exit
		(debug:print 0 *default-log-port* "best-srv-key: "best-srv-key", server-key: "server-key", i-am-srv: "i-am-srv)
		;; am I the best-srv, compare server-keys to know
		(if i-am-srv
		    (if (get-lock-db sdat db-file (servdat-host sdat)(servdat-port sdat)) ;; (db:get-iam-server-lock *dbstruct-db* *toppath* run-id)
			(begin
			  (debug:print-info 0 *default-log-port* "I'm the server!")
			  (servdat-dbfile-set! sdat db-file)
			  (servdat-status-set! sdat 'db-locked))
			(begin
			  (debug:print-info 0 *default-log-port* "I'm not the server, exiting.")
			  (bdat-time-to-exit-set! *bdat* #t)
			  (delete-pkt)
			  (thread-sleep! 0.2)
			  (exit)))
		    (begin
		      (debug:print-info 0 *default-log-port*
				   "Keys do not match "best-srv-key", "server-key", exiting.")
		      (bdat-time-to-exit-set! *bdat* #t)
		      (delete-pkt)
		      (thread-sleep! 0.2)
		      (exit)))
		sdat))
	    (begin ;; sdat not yet contains server info
	      (debug:print-info 0 *default-log-port* "Still waiting, last-sdat=" last-sdat)
	      (sleep 4)
	      (if (> (- (current-seconds) start-time) 120) ;; been waiting for two minutes
		  (begin
		    (debug:print-error 0 *default-log-port* "transport appears to have died, exiting server")
		    (exit))
		  (loop start-time
			(equal? sdat last-sdat)
			sdat))))))))

(define (rmt:register-server remdat apath iface port server-key dbname)
  (remotedat-conns remdat) ;; just checking types
  (rmt:open-main-connection remdat apath) ;; we need a channel to main.db
  (rmt:send-receive-real remdat apath      ;; params: host port servkey pid ipaddr dbpath
			 (db:run-id->dbname #f)
			 'register-server `(,iface
					    ,port
					    ,server-key
					    ,(current-process-id)
					    ,iface
					    ,apath
					    ,dbname)))

(define (rmt:get-count-servers remdat apath)
  (remotedat-conns remdat) ;; just checking types
  (rmt:open-main-connection remdat apath) ;; we need a channel to main.db
  (rmt:send-receive-real remdat apath      ;; params: host port servkey pid ipaddr dbpath
			 (db:run-id->dbname #f)
			 'get-count-servers `(,apath)))

(define (rmt:get-servers-info apath)
  (rmt:send-receive 'get-servers-info #f `(,apath)))

(define (rmt:deregister-server remdat apath iface port server-key dbname)
  (remotedat-conns remdat) ;; just checking types
  (rmt:open-main-connection remdat apath) ;; we need a channel to main.db
  (rmt:send-receive-real remdat apath      ;; params: host port servkey pid ipaddr dbpath
                         (db:run-id->dbname #f)
                         'deregister-server `(,iface
                                              ,port
                                              ,server-key
                                              ,(current-process-id)
                                              ,iface
                                              ,apath
                                              ,dbname)))

(define (rmt:wait-for-stable-interface #!optional (num-tries-allowed 100))
  ;; wait until *server-info* stops changing
  (let* ((stime (current-seconds)))
    (let loop ((last-host  #f)
	       (last-port  #f)
	       (tries 0))
      (let* ((curr-host (and *server-info* (servdat-host *server-info*)))
	     (curr-port (and *server-info* (servdat-port *server-info*))))
	;; first we verify port and interface, update *server-info* in need be.
	(cond
	 ((> tries num-tries-allowed)
	  (debug:print 0 *default-log-port* "rmt:keep-running, giving up after trying for several minutes.")
	  (exit 1))
	 ((not *server-info*)
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((or (not last-host)(not last-port))
	  (debug:print 0 *default-log-port* "rmt:keep-running, still no interface, tries="tries)
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((or (not (equal? last-host curr-host))
	      (not (equal? last-port curr-port)))
	  (debug:print-info 0 *default-log-port* "WARNING: interface changed, refreshing iface and port info")
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((< (- (current-seconds) stime) 1) ;; keep up the looping until at least 3 seconds have passed
	  (thread-sleep! 0.5)
	  (loop curr-host curr-port (+ tries 1)))
	 (else
	  (rmt:get-signature) ;; sets *my-signature* as side effect
	  (servdat-status-set! *server-info* 'interface-stable)
	  (debug:print 0 *default-log-port*
		       "SERVER STARTED: " curr-host
		       ":" curr-port
		       " AT " (current-seconds) " server signature: " *my-signature*
		       " with "(servdat-trynum *server-info*)" port changes")
	  (flush-output *default-log-port*)
	  #t))))))

;; run rmt:keep-running in a parallel thread to monitor that the db is being 
;; used and to shutdown after sometime if it is not.
;;
(define (rmt:keep-running dbname) 
  ;; if none running or if > 20 seconds since 
  ;; server last used then start shutdown
  ;; This thread waits for the server to come alive
  (debug:print-info 0 *default-log-port* "Starting the sync-back, keep alive thread in server")

  (let* ((remdat            *remotedat*)
	 (server-start-time (current-seconds))
	 (pkts-dir          (get-pkts-dir))
	 (server-key        (rmt:get-signature)) ;; This servers key
	 (is-main           (equal? (args:get-arg "-db") ".db/main.db"))
	 (last-access       0)
	 (server-timeout    (server:expiration-timeout))
	 (shutdown-server-sequence (lambda (host port)
				     (set! *unclean-shutdown* #f)
				     (debug:print-info 0 *default-log-port* "Starting to shutdown the server. pid="(current-process-id))
				     (rmt:server-shutdown host port)
				     (portlogger:open-run-close portlogger:set-port port "released")
				     (exit)))
	 (timed-out?        (lambda ()
			      (<= (+ last-access server-timeout)
				  (current-seconds)))))
    (servdat-dbfile-set! *server-info* (args:get-arg "-db"))
    ;; main and run db servers have both got wait logic (could/should merge it)
    (if is-main
	(rmt:wait-for-server pkts-dir dbname server-key)
	(rmt:wait-for-stable-interface))
    ;; this is our forever loop
    (let* ((iface             (servdat-host *server-info*))
	   (port              (servdat-port *server-info*)))
      (let loop ((count          0)
		 (bad-sync-count 0)
		 (start-time     (current-milliseconds)))
	(if (and (not is-main)
		 (common:low-noise-print 60 "servdat-status"))
	    (debug:print-info 0 *default-log-port* "servdat-status is " (servdat-status *server-info*)))

	;; set up the database handle
	(mutex-lock! *heartbeat-mutex*)
	(if (not *dbstruct-db*) ;; no db opened yet, open the db and register with main if appropriate
	    (let ((watchdog (bdat-watchdog *bdat*)))		 
	      (debug:print 0 *default-log-port* "SERVER: dbprep")
	      (db:setup dbname) ;; sets *dbstruct-db* as side effect
	      (servdat-status-set! *server-info* 'db-opened)
	      ;; IFF I'm not main, call into main and register self
	      (if (not is-main)
		  (let ((res (rmt:register-server remdat
						  *toppath* iface port
						  server-key dbname)))
		    (if res ;; we are the server
			(servdat-status-set! *server-info* 'have-interface-and-db)
			;; now check that the db locker is alive, clear it out if not
			(let* ((serv-info (rmt:get-server-info *toppath* dbname)))
			  (match serv-info
			    ((host port servkey pid ipaddr apath dbpath)
			     (if (not (server-ready? host port servkey))
				 (begin
				   (debug:print-info 0 *default-log-port* "Server registered but not alive. Removing and trying again.")
				   (rmt:deregister-server remdat apath host port servkey dbpath) ;; servkey pid ipaddr apath dbpath)
				   
				   (loop (+ count 1) bad-sync-count start-time))))
			    (else
			     (debug:print 0 *default-log-port* "We are not the server for "dbname", exiting. Server info is: "serv-info)
			     (exit)))))))
	      (debug:print 0 *default-log-port*
			   "SERVER: running, db "dbname" opened, megatest version: "
			   (common:get-full-version))
	      ;; start the watchdog

	      ;; is this really needed?
	      
	      #;(if watchdog
		  (if (not (member (thread-state watchdog)
				   '(ready running blocked
					   sleeping dead)))
		      (begin
			(debug:print-info 0 *default-log-port* "Starting watchdog thread (in state "(thread-state watchdog)")")
			(thread-start! watchdog))
		      (debug:print-info 0 *default-log-port* "Not starting watchdog thread (in state "(thread-state watchdog)")"))
		  (debug:print 0 *default-log-port* "ERROR: *watchdog* not setup, cannot start it."))
	      #;(loop (+ count 1) bad-sync-count start-time)
	      ))

	(debug:print-info 0 *default-log-port* "syncing "*toppath*" "dbname" at "(current-seconds))
	(db:sync-inmem->disk *dbstruct-db* *toppath* dbname force-sync: #t)
	
	(mutex-unlock! *heartbeat-mutex*)
	
	;; when things go wrong we don't want to be doing the various
	;; queries too often so we strive to run this stuff only every
	;; four seconds or so.
	(let* ((sync-time (- (current-milliseconds) start-time))
	       (rem-time  (quotient (- 4000 sync-time) 1000)))
	  (if (and (<= rem-time 4)
		   (>  rem-time 0))
	      (thread-sleep! rem-time)))
	
	(if (< count 1) ;; 3x3 = 9 secs aprox
	    (loop (+ count 1) bad-sync-count (current-milliseconds)))
	
	;; Transfer *db-last-access* to last-access to use in checking that we are still alive
	(set! last-access *db-last-access*)
	
	(if (common:low-noise-print 60 "dbstats")
	    (begin
	      (debug:print 0 *default-log-port* "Server stats:")
	      (db:print-current-query-stats)))
	(let* ((hrs-since-start  (/ (- (current-seconds) server-start-time) 3600)))
	  (cond
	   ((not *server-run*)
	    (debug:print-info 0 *default-log-port* "*server-run* set to #f. Shutting down.")
	    (shutdown-server-sequence (get-host-name) port))
	   ((timed-out?)
	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
	    (shutdown-server-sequence (get-host-name) port))
	   ((and *server-run*
		 (or (not (timed-out?))
		     (if is-main ;; do not exit if there are other servers (keep main open until all others gone)
			 (> (rmt:get-count-servers remdat *toppath*) 1)
			 #f)))
	    (if (common:low-noise-print 120 "server continuing")
		(debug:print-info 0 *default-log-port* "Server continuing, seconds since last db access: " (- (current-seconds) last-access)))
	    (loop 0 bad-sync-count (current-milliseconds)))
	   (else
	    (set! *unclean-shutdown* #f)
	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
	    (shutdown-server-sequence (get-host-name) port)
	    #;(debug:print-info 0 *default-log-port* "Sending 'quit to server, received: "
			      (open-send-receive-nn (conc iface":"port)      ;; do this here and not in server-shutdown
						    (sexpr->string 'quit)))
	    )))))))

;; Call this to start the actual server
;;
;; all routes though here end in exit ...
;;
;; This is the point at which servers are started
;;
(define (rmt:server-launch dbname)
  (debug:print-info 0 *default-log-port* "Entered rmt:server-launch")
  (let* ((th2 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server run thread started")
			     (rmt:run (if (args:get-arg "-server")
					  (args:get-arg "-server")
					  "-")
				      )) "Server run"))
	 (th3 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server monitor thread started")
			     (rmt:keep-running dbname)
			     "Keep running"))))
    (thread-start! th2)
    (thread-sleep! 0.252) ;; give the server time to settle before starting the keep-running monitor.
    (thread-start! th3)
    (set! *didsomething* #t)
    (thread-join! th2)
    (thread-join! th3)
    ;; (exit))
  )
  #f
  )
	    
;; Generate a unique signature for this process, used at both client and
;; server side
(define (rmt:mk-signature)
  (message-digest-string (md5-primitive) 
			 (with-output-to-string
			   (lambda ()
			     (write (list (current-directory)
                                          (current-process-id)
					  (argv)))))))

(define (rmt:get-signature) 
  (if *my-signature* *my-signature*
      (let ((sig (rmt:mk-signature)))
        (set! *my-signature* sig)
        *my-signature*)))

;;======================================================================
;; Nanomsg transport
;;======================================================================

(define (is-port-in-use port-num)
  (let* ((ret #f))
    (let-values (((inp oup pid)
		  (process "netstat" (list  "-tulpn" ))))
      (let loop ((inl (read-line inp)))
        (if (not (eof-object? inl))
            (begin 
	      (if (string-search (regexp (conc ":" port-num)) inl)
		  (begin
					;(print "Output: "  inl)
		    (set! ret  #t))
		  (loop (read-line inp)))))))
    ret))

;;start a server, returns the connection
;;
(define (start-nn-server portnum )
  (let ((rep (make-rep-socket))) ;; (nn-socket 'rep)))
    (socket-set! rep 'nng/recvtimeo 2000)
    (handle-exceptions ;; why have exception handler here? 
     exn
     (let ((emsg ((condition-property-accessor 'exn 'message) exn)))
       (print "ERROR: Failed to start server \"" emsg "\"")
       (exit 1))
      
     (nng-dial #;nn-bind rep (conc "tcp://*:" portnum)))
    rep))

(define (open-nn-connection host-port)
  (let ((req  (make-req-socket))
        (uri  (conc "tcp://" host-port)))
    (nng-dial req uri)
    (socket-set! req 'nng/recvtimeo 2000)
    req))

(define (send-receive-nn req msg)
  (nng-send req msg)
  (nng-recv req))

(define (close-nn-connection req)
  (nng-close! req))
  
;; ;; open connection to server, send message, close connection
;; ;;
;; (define (open-send-close-nn host-port msg #!key (timeout 3) ) ;; default timeout is 3 seconds
;;   (let ((req  (make-req-socket 'req))
;;         (uri  (conc "tcp://" host-port))
;;         (res  #f)
;;         ;; (contacts (alist-ref 'contact attrib))
;;         ;; (mode (alist-ref 'mode attrib))
;; 	)
;;     (socket-set! req 'nng/recvtimeo 2000)
;;     (handle-exceptions
;;      exn
;;      (let ((emsg ((condition-property-accessor 'exn 'message) exn)))
;;        ;; Send notification       
;;        (debug:print 0 *default-log-port* "ERROR: Failed to connect / send to " uri " message was \"" emsg "\"" )
;;        #f)
;;      (nng-dial req uri)
;;      ;; (print "Connected to the server " )
;;      (nng-send req msg)
;;      ;; (print "Request Sent")  
;;      (let* ((th1  (make-thread (lambda ()
;;                                  (let ((resp (nng-recv req)))
;;                                    (nng-close! req)
;;                                    (set! res (if (equal? resp "ok")
;;                                                  #t
;;                                                  #f))))
;;                                "recv thread"))
;;             (th2 (make-thread (lambda ()
;;                                 (thread-sleep! timeout)
;;                                 (thread-terminate! th1))
;; 			      "timer thread")))
;;        (thread-start! th1)
;;        (thread-start! th2)
;;        (thread-join! th1)
;;        res))))
;; 
(define (open-send-receive-nn host-port msg #!key (timeout 3) ) ;; default timeout is 3 seconds
  (let ((req  (make-req-socket))
        (uri  (conc "tcp://" host-port))
        (res  #f)) 
    (handle-exceptions
     exn
     (let ((emsg ((condition-property-accessor 'exn 'message) exn)))
       ;; Send notification      
       (debug:print 0 *default-log-port* "ERROR: Failed to connect / send to " uri " message was \"" emsg "\", exn=" exn)
       #f)
     (nng-dial req uri)
     (nng-send req msg)
     (let* ((th1  (make-thread (lambda ()
                                 (let ((resp (nng-recv req)))
                                   (nng-close! req)
                                   ;; (print resp)
                                   (set! res resp)))
                               "recv thread"))
            (th2 (make-thread (lambda ()
                                (thread-sleep! timeout)
                                (thread-terminate! th1))
                             "timer thread")))
       (thread-start! th1)
       (thread-start! th2)
       (thread-join! th1)
       res))))

;;======================================================================
;; S E R V E R   U T I L I T I E S 
;;======================================================================

;; run ping in separate process, safest way in some cases
;;
#;(define (server:ping-server ifaceport)
  (with-input-from-pipe 
   (conc (common:get-megatest-exe) " -ping " ifaceport)
   (lambda ()
     (let loop ((inl (read-line))
		(res "NOREPLY"))
       (if (eof-object? inl)
	   (case (string->symbol res)
	     ((NOREPLY)  #f)
	     ((LOGIN_OK) #t)
	     (else       #f))
	   (loop (read-line) inl))))))

;; NOT USED (well, ok, reference in rpc-transport but otherwise not used).
;;
#;(define (server:login toppath)
  (lambda (toppath)
    (set! *db-last-access* (current-seconds)) ;; might not be needed.
    (if (equal? *toppath* toppath)
	#t
	#f)))

;; (define server:sync-lock-token "SERVER_SYNC_LOCK")
;; (define (server:release-sync-lock)
;;   (db:no-sync-del! *no-sync-db* server:sync-lock-token))
;; (define (server:have-sync-lock?)
;;   (let* ((have-lock-pair (db:no-sync-get-lock *no-sync-db* server:sync-lock-token))
;;          (have-lock?     (car have-lock-pair))
;;          (lock-time      (cdr have-lock-pair))
;;          (lock-age       (- (current-seconds) lock-time)))
;;     (cond
;;      (have-lock? #t)
;;      ((>lock-age
;;        (* 3 (configf:lookup-number *configdat* "server" "minimum-intersync-delay" default: 180)))
;;       (server:release-sync-lock)
;;       (server:have-sync-lock?))
;;      (else #f))))



)

;;======================================================================
;; A T T I C
;;======================================================================


    ;; (handle-directory spiffy-directory-listing)
;; #;(handle-exception (lambda (exn chain)
;; 			(signal (make-composite-condition
;; 				 (make-property-condition 
;; 				  'server
;; 				  'message "server error")))))
;; 
;; ;; Setup the web server and a /ctrl interface
;; ;;
;; (vhost-map `(((* any) . ,(lambda (continue)
;; 			       ;; open the db on the first call 
;; 				 ;; This is were we set up the database connections
;; 			       (let* (($   (request-vars source: 'both))
;; 				      ;; (dat ($ 'dat))
;; 				      (res #f))
;; 				 (cond
;; 				  ((equal? (uri-path (request-uri (current-request)))
;; 					   '(/ "api"))
;; 				   (debug:print 0 *default-log-port* "In api request $=" $)
;; 				   (send-response ;; the $ is the request vars proc
;; 				    body: (http-handle-api *dbstruct-db* $)
;; 				    headers: '((content-type text/plain)))
;; 				   (set! *db-last-access* (current-seconds)))
;; 				  ((equal? (uri-path (request-uri (current-request))) 
;; 					   '(/ "ping"))
;; 				   (send-response body: (conc *toppath*"/"(args:get-arg "-db"))
;; 						  headers: '((content-type text/plain))))
;; 				  ((equal? (uri-path (request-uri (current-request))) 
;; 					   '(/ "loop-test"))
;; 				   (send-response body: (alist-ref 'data ($))
;; 						  headers: '((content-type text/plain))))
;; 				  ((equal? (uri-path (request-uri (current-request))) 
;; 					   '(/ ""))
;; 				   (send-response body: ((http-get-function 'rmt:main-page))))
;; 				  ((equal? (uri-path (request-uri (current-request))) 
;; 					   '(/ "json_api"))
;; 				   (send-response body: ((http-get-function 'rmt:main-page))))
;; 				  ((equal? (uri-path (request-uri (current-request))) 
;; 					   '(/ "runs"))
;; 				   (send-response body: ((http-get-function 'rmt:main-page))))
;; 				  ((equal? (uri-path (request-uri (current-request))) 
;; 					   '(/ any))
;; 				   (send-response body: "hey there!\n"
;; 						  headers: '((content-type text/plain))))
;; 				  ((equal? (uri-path (request-uri (current-request))) 
;; 					   '(/ "hey"))
;; 				   (send-response body: "hey there!\n" 
;; 						  headers: '((content-type text/plain))))
;;                               ((equal? (uri-path (request-uri (current-request))) 
;; 					   '(/ "jquery3.1.0.js"))
;; 				   (send-response body: ((http-get-function 'rmt:show-jquery))
;; 						  headers: '((content-type application/javascript))))
;;                               ((equal? (uri-path (request-uri (current-request))) 
;; 					   '(/ "test_log"))
;; 				   (send-response body: ((http-get-function 'rmt:html-test-log) $) 
;; 						  headers: '((content-type text/HTML))))    
;;                               ((equal? (uri-path (request-uri (current-request))) 
;; 					   '(/ "dashboard"))
;; 				   (send-response body: ((http-get-function 'rmt:html-dboard) $)
;; 						  headers: '((content-type text/HTML)))) 
;; 				  (else (continue))))))))







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  (set! *http-connections-next-cleanup* (+ (current-seconds) 10))
  (mutex-unlock! *http-mutex*))

(define (rmt:inc-requests-and-prep-to-close-all-connections)
  (mutex-lock! *http-mutex*)
  (set! *http-requests-in-progress* (+ 1 *http-requests-in-progress*)))










































































































































































































































































































































































































































































































































































































































































)

;;======================================================================
;; A T T I C
;;======================================================================































































Modified runsmod.scm from [e0bbf25b11] to [2064556098].

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	(currtime (current-seconds)))
    (if (> (- currtime lasttime) waitval)
	(begin
	  (hash-table-set! *runs:denoise* key currtime)
	  #t)
	#f)))















(define (runs:can-run-more-tests runsdat run-id jobgroup max-concurrent-jobs)

  ;; Take advantage of a good place to exit if running the one-pass methodology
  (if (and (> (runs:dat-can-run-more-tests-count runsdat) 20)
	   (args:get-arg "-one-pass"))
      (exit 0))

  (if (runs:dat-load-mgmt-function runsdat)((runs:dat-load-mgmt-function runsdat)))

  (let* ((num-running             (rmt:get-count-tests-running run-id))
	 (num-running-in-jobgroup (rmt:get-count-tests-running-in-jobgroup run-id jobgroup))
	 (job-group-limit         (let ((jobg-count (configf:lookup *configdat* "jobgroups" jobgroup)))
				    (if (string? jobg-count)
					(string->number jobg-count)
					jobg-count))))
    (if (> (+ num-running num-running-in-jobgroup) 0)
	(runs:inc-can-run-more-tests-count runsdat)) ;; (set! *runs:can-run-more-tests-count* (+ *runs:can-run-more-tests-count* 1)))
    (if (not (eq? *last-num-running-tests* num-running))
	(begin







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	(currtime (current-seconds)))
    (if (> (- currtime lasttime) waitval)
	(begin
	  (hash-table-set! *runs:denoise* key currtime)
	  #t)
	#f)))

(define *too-soon-delays* (make-hash-table))
(define *last-test-launch* 0)

;; to-soon delay, when matching event happened in less than dseconds delay wseconds
;;
(define (runs:too-soon-delay key dseconds wseconds)
  (let* ((last-time (hash-table-ref/default *too-soon-delays* key #f)))
    (if (and last-time
	     (< (- (current-seconds) last-time) dseconds))
	(begin
	  (debug:print-info 4 *default-log-port* "Whoa, slow down there ... "key" has been too recently seen.")
	  (thread-sleep! wseconds)))
    (hash-table-set! *too-soon-delays* key (current-seconds))))

(define (runs:can-run-more-tests runsdat run-id jobgroup max-concurrent-jobs)

  ;; Take advantage of a good place to exit if running the one-pass methodology
  (if (and (> (runs:dat-can-run-more-tests-count runsdat) 20)
	   (args:get-arg "-one-pass"))
      (exit 0))

  (if (runs:dat-load-mgmt-function runsdat)((runs:dat-load-mgmt-function runsdat)))

  (let* ((num-running             (rmt:get-count-tests-running run-id))
	 (num-running-in-jobgroup (rmt:get-count-tests-running-in-jobgroup run-id jobgroup))
	 (job-group-limit         (let ((jobg-count (configf:lookup-number *configdat* "jobgroups" jobgroup)))
				    (if (string? jobg-count)
					(string->number jobg-count)
					jobg-count))))
    (if (> (+ num-running num-running-in-jobgroup) 0)
	(runs:inc-can-run-more-tests-count runsdat)) ;; (set! *runs:can-run-more-tests-count* (+ *runs:can-run-more-tests-count* 1)))
    (if (not (eq? *last-num-running-tests* num-running))
	(begin
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	 (config-reruns      (let ((x (configf:lookup *configdat* "setup" "reruns")))
			       (if x (string->number x) #f)))
	 (allowed-tests      #f)
	 (runconf            #f))

    ;; check if readonly
    (when readonly-mode
      (debug:print-error 0 *default-log-port* "megatest.db is readonly.  Cannot proceed.")
      (exit 1))

    ;; per user request. If less than 100Meg space on dbdir partition, bail out with error
    ;; this will reduce issues in database corruption
    (common:check-db-dir-and-exit-if-insufficient)

    ;; override the number of reruns from the configs







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	 (config-reruns      (let ((x (configf:lookup *configdat* "setup" "reruns")))
			       (if x (string->number x) #f)))
	 (allowed-tests      #f)
	 (runconf            #f))

    ;; check if readonly
    (when readonly-mode
      (debug:print-error 0 *default-log-port* *toppath* ".db/main.db is readonly.  Cannot proceed.")
      (exit 1))

    ;; per user request. If less than 100Meg space on dbdir partition, bail out with error
    ;; this will reduce issues in database corruption
    (common:check-db-dir-and-exit-if-insufficient)

    ;; override the number of reruns from the configs
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    ;; Ensure all tests are registered in the test_meta table
    (runs:update-all-test_meta #f)

    ;; run the run prehook if there are no tests yet run for this run:
    ;;
    (runs:run-pre-hook run-id)
    ;; mark all test launched flag as false in the meta table 
    (rmt:set-var run-id (conc "lunch-complete-" run-id) "no")
    (debug:print-info 1 *default-log-port* "Setting end-of-run to no")
    (let* ((config-reruns      (let ((x (configf:lookup *configdat* "setup" "reruns")))
			       (if x (string->number x) #f)))
	  (config-rerun-cnt (if config-reruns
			config-reruns
			1)))
    (if (eq? config-rerun-cnt run-count)







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    ;; Ensure all tests are registered in the test_meta table
    (runs:update-all-test_meta #f)

    ;; run the run prehook if there are no tests yet run for this run:
    ;;
    (runs:run-pre-hook run-id)
    ;; mark all test launched flag as false in the meta table 
    (rmt:set-var run-id (conc "launch-complete-" run-id) "no")
    (debug:print-info 1 *default-log-port* "Setting end-of-run to no")
    (let* ((config-reruns      (let ((x (configf:lookup *configdat* "setup" "reruns")))
			       (if x (string->number x) #f)))
	  (config-rerun-cnt (if config-reruns
			config-reruns
			1)))
    (if (eq? config-rerun-cnt run-count)
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		    (not (member 'exclusive testmode)))))
      ;; (hash-table-delete! *max-tries-hash* (db:test-make-full-name test-name item-path))
      ;; we are going to reset all the counters for test retries by setting a new hash table
      ;; this means they will increment only when nothing can be run
      (set! *max-tries-hash* (make-hash-table))
      
      (run:test run-id run-info keyvals runname test-record flags #f test-registry all-tests-registry runsdat testdat)

      (runs:incremental-print-results run-id)
      (hash-table-set! test-registry (db:test-make-full-name test-name item-path) 'running)
      (runs:shrink-can-run-more-tests-count runsdat)  ;; DELAY TWEAKER (still needed?)
      ;; (thread-sleep! *global-delta*)
      (if (or (not (null? tal))(not (null? reg)))
	  (runs:loop-values tal reg reglen regfull reruns) ;; hed should be dropped at this time
	  #f))







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		    (not (member 'exclusive testmode)))))
      ;; (hash-table-delete! *max-tries-hash* (db:test-make-full-name test-name item-path))
      ;; we are going to reset all the counters for test retries by setting a new hash table
      ;; this means they will increment only when nothing can be run
      (set! *max-tries-hash* (make-hash-table))
      
      (run:test run-id run-info keyvals runname test-record flags #f test-registry all-tests-registry runsdat testdat)
      (set! *last-test-launch* (current-seconds))
      (runs:incremental-print-results run-id)
      (hash-table-set! test-registry (db:test-make-full-name test-name item-path) 'running)
      (runs:shrink-can-run-more-tests-count runsdat)  ;; DELAY TWEAKER (still needed?)
      ;; (thread-sleep! *global-delta*)
      (if (or (not (null? tal))(not (null? reg)))
	  (runs:loop-values tal reg reglen regfull reruns) ;; hed should be dropped at this time
	  #f))
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			   waitons:     waitons
			   testmode:    testmode
			   newtal:      newtal
			   itemmaps:    itemmaps
			   ;; prereqs-not-met: prereqs-not-met
			   )))
	(runs:dat-regfull-set! runsdat regfull)
    




	(if (> num-running 0)
            (set! last-time-some-running (current-seconds)))

        (if (> (current-seconds)(+ last-time-some-running (or (configf:lookup *configdat* "setup" "give-up-waiting") 36000)))
            (hash-table-set! *max-tries-hash* tfullname (+ (hash-table-ref/default *max-tries-hash* tfullname 0) 1)))
	;; (debug:print 0 *default-log-port* "max-tries-hash: " (hash-table->alist *max-tries-hash*))








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			   waitons:     waitons
			   testmode:    testmode
			   newtal:      newtal
			   itemmaps:    itemmaps
			   ;; prereqs-not-met: prereqs-not-met
			   )))
	(runs:dat-regfull-set! runsdat regfull)

	(if (> (- (current-seconds) *last-test-launch*) 5)        ;; be pretty aggressive for five seconds after
	    (runs:too-soon-delay (conc "loop delay " hed) 1 0.6)    ;; starting a test then apply more delay
	    (runs:too-soon-delay (conc "loop delay " hed) 1 0.1)) 
	
	(if (> num-running 0)
            (set! last-time-some-running (current-seconds)))

        (if (> (current-seconds)(+ last-time-some-running (or (configf:lookup *configdat* "setup" "give-up-waiting") 36000)))
            (hash-table-set! *max-tries-hash* tfullname (+ (hash-table-ref/default *max-tries-hash* tfullname 0) 1)))
	;; (debug:print 0 *default-log-port* "max-tries-hash: " (hash-table->alist *max-tries-hash*))

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	      (if (runs:lownoise (conc "been marked do not run " tfullname) 60)
		  (debug:print-info 0 *default-log-port* "Skipping test " tfullname " as it has been marked do not run due to being completed or not runnable"))
	      (if (or (not (null? tal))(not (null? reg)))
		  (loop (runs:queue-next-hed tal reg reglen regfull)
			(runs:queue-next-tal tal reg reglen regfull)
			(runs:queue-next-reg tal reg reglen regfull)
			reruns))))

        ;; (loop (car tal)(cdr tal) reg reruns))))

	(runs:incremental-print-results run-id)
	(debug:print 4 *default-log-port* "TOP OF LOOP => "
		     "test-name: " test-name
		     "\n  hed:         " hed
		     "\n  tal:         " (runs:pretty-long-list tal)







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	      (if (runs:lownoise (conc "been marked do not run " tfullname) 60)
		  (debug:print-info 0 *default-log-port* "Skipping test " tfullname " as it has been marked do not run due to being completed or not runnable"))
	      (if (or (not (null? tal))(not (null? reg)))
		  (loop (runs:queue-next-hed tal reg reglen regfull)
			(runs:queue-next-tal tal reg reglen regfull)
			(runs:queue-next-reg tal reg reglen regfull)
			reruns))))
	
        ;; (loop (car tal)(cdr tal) reg reruns))))

	(runs:incremental-print-results run-id)
	(debug:print 4 *default-log-port* "TOP OF LOOP => "
		     "test-name: " test-name
		     "\n  hed:         " hed
		     "\n  tal:         " (runs:pretty-long-list tal)
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	  (debug:print-info 0 *default-log-port* "Have leftovers!")
	  (loop (car reg)(cdr reg) '() reruns))
	 (else
          (debug:print-info 4 *default-log-port* "cond branch - "  "rtq-9")
	  (debug:print-info 4 *default-log-port* "Exiting loop with...\n  hed=" hed "\n  tal=" tal "\n  reruns=" reruns))
	 ))) ;; end loop on sorted test names
    ;; this is the point where everything is launched and now you can mark the run in metadata table as all launched 
    (rmt:set-var run-id (conc "lunch-complete-" run-id) "yes")  
        
    ;; now *if* -run-wait we wait for all tests to be done
    ;; Now wait for any RUNNING tests to complete (if in run-wait mode)
    ;; (if (runs:dat-load-mgmt-function runsdat)((runs:dat-load-mgmt-function runsdat)))
    (thread-sleep! 10) ;; I think there is a race condition here. Let states/statuses settle
    
    (let wait-loop ((num-running      (rmt:get-count-tests-running-for-run-id run-id))
		    (prev-num-running 0))
      ;; (debug:print-info 13 *default-log-port* "num-running=" num-running ", prev-num-running=" prev-num-running)
      (if (and (or (args:get-arg "-run-wait")
		   (equal? (configf:lookup *configdat* "setup" "run-wait") "yes"))
	       (> num-running 0))
	  (begin
	    ;; Here we mark any old defunct tests as incomplete. Do this every fifteen minutes
	    ;; (debug:print 0 *default-log-port* "Got here eh! num-running=" num-running " (> num-running 0) " (> num-running 0))

	    (if (> (current-seconds)(+ last-time-incomplete 900))
		(let ((actual-num-running (rmt:get-count-tests-running-for-run-id run-id)))
		  (debug:print-info 0 *default-log-port* "Marking stuck tests as INCOMPLETE while waiting for run " run-id
				    ". Running as pid " (current-process-id) " on " (get-host-name))
		  (set! last-time-incomplete (current-seconds)) ;; FIXME, this might be causing slow down - use of set!
		  (runs:find-and-mark-incomplete-and-check-end-of-run run-id #f)
		  (debug:print-info 0 *default-log-port* "run-wait specified, waiting on " actual-num-running
				    " tests in RUNNING, REMOTEHOSTSTART or LAUNCHED state at "
				    (time->string (seconds->local-time (current-seconds))))))
	    ;; (if (runs:dat-load-mgmt-function runsdat)((runs:dat-load-mgmt-function runsdat)))
	    (thread-sleep! 5) ;; (if (>= num-running max-concurrent-jobs) 5 1))
	    (wait-loop (rmt:get-count-tests-running-for-run-id run-id)
		       num-running))))
    ;; LET* ((test-record
    ;; we get here on "drop through". All done!
    ;; this is moved to runs:run-testes since this function is getting called twice to ensure everthing is completed. 
    ;; (debug:print-info 0 *default-log-port* "Calling Post Hook")    
    ;; (runs:run-post-hook run-id)







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	  (debug:print-info 0 *default-log-port* "Have leftovers!")
	  (loop (car reg)(cdr reg) '() reruns))
	 (else
          (debug:print-info 4 *default-log-port* "cond branch - "  "rtq-9")
	  (debug:print-info 4 *default-log-port* "Exiting loop with...\n  hed=" hed "\n  tal=" tal "\n  reruns=" reruns))
	 ))) ;; end loop on sorted test names
    ;; this is the point where everything is launched and now you can mark the run in metadata table as all launched 
    (rmt:set-var run-id (conc "launch-complete-" run-id) "yes")  
        
    ;; now *if* -run-wait we wait for all tests to be done
    ;; Now wait for any RUNNING tests to complete (if in run-wait mode)
    ;; (if (runs:dat-load-mgmt-function runsdat)((runs:dat-load-mgmt-function runsdat)))
    (thread-sleep! 0.1) ;; I think there is a race condition here. Let states/statuses settle
    
    (let wait-loop ((num-running      (rmt:get-count-tests-running-for-run-id run-id))
		    (prev-num-running 0))
      ;; (debug:print-info 13 *default-log-port* "num-running=" num-running ", prev-num-running=" prev-num-running)
      (if (and (or (args:get-arg "-run-wait")
		   (equal? (configf:lookup *configdat* "setup" "run-wait") "yes"))
	       (> num-running 0))
	  (begin
	    ;; Here we mark any old defunct tests as incomplete. Do this every fifteen minutes
	    ;; (debug:print 0 *default-log-port* "Got here eh! num-running=" num-running " (> num-running 0) " (> num-running 0))
	    (thread-sleep! 5) ;; let's always sleep, prevents abutting calls to rum:get-count-tests-running-for-run-id - didn't help
	    (if (> (current-seconds)(+ last-time-incomplete 900))
		(let ((actual-num-running (rmt:get-count-tests-running-for-run-id run-id)))
		  (debug:print-info 0 *default-log-port* "Marking stuck tests as INCOMPLETE while waiting for run " run-id
				    ". Running as pid " (current-process-id) " on " (get-host-name))
		  (set! last-time-incomplete (current-seconds)) ;; FIXME, this might be causing slow down - use of set!
		  (runs:find-and-mark-incomplete-and-check-end-of-run run-id #f)
		  (debug:print-info 0 *default-log-port* "run-wait specified, waiting on " actual-num-running
				    " tests in RUNNING, REMOTEHOSTSTART or LAUNCHED state at "
				    (time->string (seconds->local-time (current-seconds))))))
	    ;; (if (runs:dat-load-mgmt-function runsdat)((runs:dat-load-mgmt-function runsdat)))

	    (wait-loop (rmt:get-count-tests-running-for-run-id run-id)
		       num-running))))
    ;; LET* ((test-record
    ;; we get here on "drop through". All done!
    ;; this is moved to runs:run-testes since this function is getting called twice to ensure everthing is completed. 
    ;; (debug:print-info 0 *default-log-port* "Calling Post Hook")    
    ;; (runs:run-post-hook run-id)
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	      (debug:print-error 0 *default-log-port* "Attempted to " action-desc " but run area config file not found")
	      (exit 1))
	    ;; Extract out stuff needed in most or many calls
	    ;; here then call proc
	    (let* ((keyvals    (keys:target->keyval keys target)))
	      (proc target runname keys keyvals)))
	;; (if db (sqlite3:finalize! db))
	(set! *didsomething* #t))))))


;;======================================================================
;; Lock/unlock runs
;;======================================================================

(define (runs:handle-locking target keys runname lock unlock user)
  (let* ((db       #f)







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	      (debug:print-error 0 *default-log-port* "Attempted to " action-desc " but run area config file not found")
	      (exit 1))
	    ;; Extract out stuff needed in most or many calls
	    ;; here then call proc
	    (let* ((keyvals    (keys:target->keyval keys target)))
	      (proc target runname keys keyvals)))
	;; (if db (sqlite3:finalize! db))
	(set! *didsomething* #t)
	)))))

;;======================================================================
;; Lock/unlock runs
;;======================================================================

(define (runs:handle-locking target keys runname lock unlock user)
  (let* ((db       #f)

Added rununit.sh version [0dba7a0924].











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#!/bin/bash

rm tests/*log tests/simplerun/logs/*

script -c 'ck5 make unit'

Modified serialize-env.scm from [f4955b88d5] to [b942cb1fca].


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(module serialize-env
   *
(import scheme
	z3
	base64
	chicken.port
	chicken.pretty-print
	chicken.process-context
	chicken.base
	)

(define (gen-output)
(let* ((env-str        (with-output-to-string (lambda () (pp (get-environment-variables)))))
       (zipped-env-str (z3:encode-buffer env-str))
       (b64-env-str    (base64-encode zipped-env-str)))
  (print b64-env-str))
)
)
(import serialize-env)
(gen-output)


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(module serialize-envmod
   *
(import scheme
	z3
	base64
	chicken.port
	chicken.pretty-print
	chicken.process-context
	chicken.base
	)

(define (gen-output)
(let* ((env-str        (with-output-to-string (lambda () (pp (get-environment-variables)))))
       (zipped-env-str (z3:encode-buffer env-str))
       (b64-env-str    (base64-encode zipped-env-str)))
  (print b64-env-str))
)


(gen-output)

)

Modified tests/simplerun/Makefile from [38acf6b450] to [115e15e0c2].

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cleanup :
	killall mtest -v -9;rm -rf .meta .db




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cleanup :
	killall mtest dboard -v -9 || true
	rm -rf *.log *.bak NB* logs/* .meta .db ../simpleruns/* lt

Added tests/simplerun/debug.scm version [1bee670fb9].



























































































































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(module junk
	*

(import big-chicken
	rmtmod
	apimod
	dbmod
	srfi-18
	trace)

(trace-call-sites #t)
(trace 
  ;; db:get-tests-for-run
  ;; rmt:general-open-connection
  ;; rmt:open-main-connection
  ;; rmt:drop-conn
  ;; rmt:send-receive
  ;; rmt:log-to-main
  )

(define (make-run-id)
  (let* ((s (conc (current-process-id)))
	 (l (string-length s)))
    (string->number (substring s (- l 3) l))
    ))

(define (run)
  (let* ((th1 (make-thread
	       (lambda ()
		 (let loop ((r 0)
			    (i 1)
			    (s 0)) ;; sum
		   (let ((start-time (current-milliseconds))
			 (run-id     (+ r (make-run-id))))
		     (rmt:register-test run-id "test1" (conc "item_" i))
		     (thread-sleep! 0.01)
		     (let* ((qry-time (- (current-milliseconds) start-time))
			    (tot-query-time (+ qry-time s))
			    (avg-query-time (* 1.0 (/ tot-query-time (max i 1)))))
		       (if (> qry-time 500)
			   (print "WARNING: rmt:register-test took more than 500ms, "qry-time"ms, i="i", avg-query-time="avg-query-time))
		       (if (eq? (modulo i 100) 0)
			   (print "For run-id="run-id", "(rmt:get-keys-write)" num tests registered="i" avg-query-time="avg-query-time))
		       (if (< i 500)
			   (loop r (+ i 1) tot-query-time)
			   (if (< r 100)
			       (let* ((start-time (current-milliseconds)))
				 (print "rmt:get-keys "(rmt:get-keys)" in "(- (current-milliseconds) start-time))
				 ;;                                          run-id testpatt states statuses offset limit not-in sort-by sort-order qryvals last-update mode
				 (print "Got "(length (rmt:get-tests-for-run run-id "%"     '()    '()       #f      #f    #f     #f      #f         #f      0           #f))" tests for run "run-id)
				 (print "Average query time: "avg-query-time)
				 (loop (+ r 1) 0 tot-query-time))))))))
	       )))
    (thread-start! th1)
    (thread-join! th1)))

(run)
)


Modified tests/simplerun/megatest.config from [3e9fa2e5ac] to [e6118ecde2].

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SYSTEM TEXT
RELEASE TEXT

[setup]
# Adjust max_concurrent_jobs to limit how much you load your machines
max_concurrent_jobs 50




# Uncomment this to make the in-mem db into a disk based db (slower but good for debug)
# be aware that some unit tests will fail with this due to persistent data
#
# tmpdb /tmp

# This is your link path, you can move it but it is generally better to keep it stable
linktree #{getenv MT_RUN_AREA_HOME}/../simplelinks

# Valid values for state and status for steps, NB// It is not recommended you use this
[validvalues]
state start end completed

# Job tools are more advanced ways to control how your jobs are launched
[jobtools]
useshell yes
launcher nbfake

# You can override environment variables for all your tests here
[env-override]
EXAMPLE_VAR example value

# As you run more tests you may need to add additional disks, the names are arbitrary but must be unique
[disks]
disk0 #{getenv MT_RUN_AREA_HOME}/../simpleruns







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SYSTEM TEXT
RELEASE TEXT

[setup]
# Adjust max_concurrent_jobs to limit how much you load your machines
max_concurrent_jobs 50

[server]
timeout 3600

# Uncomment this to make the in-mem db into a disk based db (slower but good for debug)
# be aware that some unit tests will fail with this due to persistent data
#
# tmpdb /tmp

# This is your link path, you can move it but it is generally better to keep it stable
linktree #{getenv MT_RUN_AREA_HOME}/../simplelinks

# Valid values for state and status for steps, NB// It is not recommended you use this
[validvalues]
state start end completed

# Job tools are more advanced ways to control how your jobs are launched
[jobtools]
# useshell yes
launcher nbfake

# You can override environment variables for all your tests here
[env-override]
EXAMPLE_VAR example value

# As you run more tests you may need to add additional disks, the names are arbitrary but must be unique
[disks]
disk0 #{getenv MT_RUN_AREA_HOME}/../simpleruns

Added tests/simplerun/simple.scm version [769f74bff6].





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(print (rmt:get-keys))

Modified tests/simplerun/tests/test1/testconfig from [db2c27ffef] to [b9db33e554].

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# Test requirements are specified here
[requirements]
# waiton setup
priority 0

# Iteration for your tests are controlled by the items section
[items]
# PARTOFDAY morning noon afternoon evening night

# test_meta is a section for storing additional data on your test
[test_meta]
author matt
owner  matt
description An example test







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# Test requirements are specified here
[requirements]
# waiton setup
priority 0

# Iteration for your tests are controlled by the items section
# [items]
# PARTOFDAY morning noon afternoon evening night

# test_meta is a section for storing additional data on your test
[test_meta]
author matt
owner  matt
description An example test

Modified tests/tests.scm from [7467445dd0] to [be8860baa4].

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(import srfi-18 
	test 
	chicken.string
	chicken.process-context
	chicken.file
	chicken.pretty-print
	commonmod

	)

(define test-work-dir (current-directory))




;; given list of lists
;;  ( ( msg expected param1 param2 ...)
;;    ( ... ) )
;; apply test to all
;;
(define (test-batch proc pname inlst #!key (post-proc #f))







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(import srfi-18 
	test 
	chicken.string
	chicken.process-context
	chicken.file
	chicken.pretty-print
	commonmod
	ulex
	)

(define test-work-dir (current-directory))

(work-method   'mailbox)   ;; threads, direct, mailbox
(return-method 'mailbox)   ;; polling, mailbox, direct

;; given list of lists
;;  ( ( msg expected param1 param2 ...)
;;    ( ... ) )
;; apply test to all
;;
(define (test-batch proc pname inlst #!key (post-proc #f))
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;; read in all the _record files
;; (let ((files (glob "*_records.scm")))
;;   (for-each
;;    (lambda (file)
;;      (print "Loading " file)
;;      (load file))
;;    files))











(let* ((unit-test-name (list-ref (argv) 4))
       (fname          (conc "../unittests/" unit-test-name ".scm")))
  (if (file-exists? fname)
      (load fname)
      (print "ERROR: Unit test " unit-test-name " not found in unittests directory")))








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;; read in all the _record files
;; (let ((files (glob "*_records.scm")))
;;   (for-each
;;    (lambda (file)
;;      (print "Loading " file)
;;      (load file))
;;    files))

(define-syntax run-in-thread
  (syntax-rules ()
    ((_ body ...)
     (let ((th1 (make-thread (lambda ()
			       body ...)
			     "the thread")))
       (thread-start! th1)
       (thread-join! th1)))))


(let* ((unit-test-name (list-ref (argv) 4))
       (fname          (conc "../unittests/" unit-test-name ".scm")))
  (if (file-exists? fname)
      (load fname)
      (print "ERROR: Unit test " unit-test-name " not found in unittests directory")))

Modified tests/unittests/all-rmt.scm from [3a8e222d0c] to [170e763023].

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;; (test-batch rmt:get-latest-host-load
;;             "rmt:get-latest-host-load"
;;             (list (list "localhost"  #t (get-host-name))
;;                   (list "not-a-host" #t "not-a-host"  ))
;;             post-proc: pair?)
;;                                            
;; (test #f #t (list? (rmt:get-changed-record-ids 0)))
;; 
(test #f #f (begin (runs:update-all-test_meta #f) #f))

 

(test #f '("test1" "test2")(sort (alist-ref "tagtwo" (rmt:get-tests-tags) equal?) string<=?))
(test #f '() (rmt:get-key-val-pairs 0))
(test #f '("SYSTEM" "RELEASE") (rmt:get-keys))
(test #f '("SYSTEM" "RELEASE") (rmt:get-keys-write)) ;; dummy query to force server start
(test #f '() (rmt:get-key-vals 1))
(test #f (vector '("SYSTEM" "RELEASE") '()) (rmt:get-targets))
(test #f "" (rmt:get-target 1))







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;; (test-batch rmt:get-latest-host-load
;;             "rmt:get-latest-host-load"
;;             (list (list "localhost"  #t (get-host-name))
;;                   (list "not-a-host" #t "not-a-host"  ))
;;             post-proc: pair?)
;;                                            
;; (test #f #t (list? (rmt:get-changed-record-ids 0)))
;;

(run-in-thread

 ;; (test #f #f (begin (runs:update-all-test_meta #f) #f)) 
(test #f '("test1" "test2")(sort (alist-ref "tagtwo" (rmt:get-tests-tags) equal?) string<=?))
(test #f '() (rmt:get-key-val-pairs 0))
(test #f '("SYSTEM" "RELEASE") (rmt:get-keys))
(test #f '("SYSTEM" "RELEASE") (rmt:get-keys-write)) ;; dummy query to force server start
(test #f '() (rmt:get-key-vals 1))
(test #f (vector '("SYSTEM" "RELEASE") '()) (rmt:get-targets))
(test #f "" (rmt:get-target 1))
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(test #f #t (vector? (rmt:get-runs "%" 10 0 keypatts)))
(test #f '(1)(rmt:get-all-run-ids))
(test #f '()(rmt:get-prev-run-ids 1))
(test #f #t (begin (rmt:lock/unlock-run 1 #t #f "mikey") #t))
(test #f "JUSTFINE" (rmt:get-run-status 1))
(test #f #t (begin (rmt:set-run-status 1 "NOTFINE" msg: "A message") #t))
(test #f #t (begin (rmt:update-run-event_time 1) #t))

;; (rmt:get-runs-by-patt  keys runnamepatt targpatt offset limit fields last-runs-update) ;; fields of #f uses default
;;
(let ((keys (rmt:get-keys))
      (rnp  "%")    ;; run name patt
      (tpt  "%/%")) ;; target patt
  (test-batch rmt:get-runs-by-patt
              "rmt:get-runs-by-patt"







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(test #f #t (vector? (rmt:get-runs "%" 10 0 keypatts)))
(test #f '(1)(rmt:get-all-run-ids))
(test #f '()(rmt:get-prev-run-ids 1))
(test #f #t (begin (rmt:lock/unlock-run 1 #t #f "mikey") #t))
(test #f "JUSTFINE" (rmt:get-run-status 1))
(test #f #t (begin (rmt:set-run-status 1 "NOTFINE" msg: "A message") #t))
(test #f #t (begin (rmt:update-run-event_time 1) #t))
)
;; (rmt:get-runs-by-patt  keys runnamepatt targpatt offset limit fields last-runs-update) ;; fields of #f uses default
;;
(let ((keys (rmt:get-keys))
      (rnp  "%")    ;; run name patt
      (tpt  "%/%")) ;; target patt
  (test-batch rmt:get-runs-by-patt
              "rmt:get-runs-by-patt"

Modified tests/unittests/basicserver.scm from [0bda564ab1] to [7886f1227c].

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;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;; Run like this:
;;
;;  ./rununittest.sh server 1;(cd simplerun;megatest -stop-server 0)

(import rmtmod trace http-client apimod dbmod
	launchmod srfi-69)

(trace-call-sites #t)
(trace

 ;; db:get-dbdat
 ;; rmt:find-main-server
;;  rmt:send-receive-real
;;  rmt:send-receive
 ;; sexpr->string
 ;; server-ready?
 ;; rmt:register-server

 ;; rmt:open-main-connection
 ;; rmt:general-open-connection
 ;; rmt:get-conny
 ;; common:watchdog
 ;; rmt:find-main-server
 ;; get-all-server-pkts
 ;; get-viable-servers
 ;; get-best-candidate
 ;; api:run-server-process
 ;; rmt:run
 ;; rmt:try-start-server





 )

(test #f #t (remotedat? (let ((r (make-remotedat)))

			  (set! *remotedat* r)
			  r)))
(test #f #f (rmt:get-conn *remotedat* *toppath* ".db/main.db"))
(test #f #f (rmt:find-main-server *toppath* ".db/main.db"))

(test #f #t (rmt:open-main-connection *remotedat* *toppath*))





(pp (hash-table->alist (remotedat-conns *remotedat*)))

(test #f #t (conndat? (rmt:get-conn *remotedat* *toppath* ".db/main.db")))

(define *main*  (rmt:get-conn *remotedat* *toppath* ".db/main.db"))



;; (for-each (lambda (tdat)
;; 	    (test #f tdat (loop-test (rmt:conn-ipaddr *main*)
;; 				     (rmt:conn-port *main*) tdat)))
;; 	  (list 'a
;; 		'(a "b" 123 1.23 )))
(test #f #t (rmt:send-receive 'ping #f 'hello))

(define *db* (db:setup ".db/main.db"))

;; these let me cut and paste from source easily
(define apath *toppath*)
(define dbname ".db/2.db")
(define remote *remotedat*)
(define keyvals  '(("SYSTEM" "a")("RELEASE" "b")))


(test #f '() (string->sexpr "()"))
(test #f 'server-started (api:execute-requests *db* 'get-server (list *toppath* ".db/2.db")))
(set! *dbstruct-db* #f)

(exit)







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;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;; Run like this:
;;
;;  ./rununittest.sh server 1;(cd simplerun;megatest -stop-server 0)

(import rmtmod trace http-client apimod dbmod
	launchmod srfi-69 ulex system-information)

(trace-call-sites #t)
(trace
 ;; get-the-server
 ;; db:get-dbdat
 ;; rmt:find-main-server
;;  rmt:send-receive-real
;;  rmt:send-receive
 ;; sexpr->string
 ;; server-ready?
 ;; rmt:register-server
 ;; api:run-server-process
 ;; rmt:open-main-connection
 ;; rmt:general-open-connection
 ;; rmt:get-conny
 ;; common:watchdog
 ;; rmt:find-main-server
 ;; get-all-server-pkts
 ;; get-viable-servers
 ;; get-best-candidate
 ;; api:run-server-process
 ;; rmt:run
 ;; rmt:try-start-server
 ;;
 ;; ulex
 ;;
 ;; wait-and-close
 ;; run-listener
 )


(test #f #t (servdat? (let ((s (make-servdat)))
			  (set! *servdat* s)
			  s)))
(test #f #f (rmt:get-conn *servdat* *toppath* ".db/main.db"))
(test #f #f (rmt:find-main-server *servdat* *toppath* ".db/main.db"))
(define th1 (make-thread (lambda ()
			   (rmt:run (get-host-name)))
			 "rmt:run thread"))
(thread-start! th1)
(thread-sleep! 0.5) ;; give things some time to get going
;; switch to *db-serv-info* instead of *servdat*
(define *uconn* (servdat-uconn *db-serv-info*))
(print "*uconn*: " *uconn*)
(test #f #t (ulex-listener? (servdat-uconn *db-serv-info*)))
(test #f #t (string? (udat-host-port *uconn*)))


(run-in-thread
 (test #f 'ack (server-ready? *uconn* (udat-host-port *uconn*) (servdat-uuid *db-serv-info*))))
  





(test #f #t (rmt:open-main-connection *db-serv-info* *toppath*))
;; (pp (hash-table->alist (remotedat-conns *db-serv-info*)))
(test #f #t (conndat? (rmt:get-conn *db-serv-info* *toppath* ".db/main.db")))




(define remote *db-serv-info*)
(define keyvals  '(("SYSTEM" "a")("RELEASE" "b")))

(run-in-thread
 (test #f (map car keyvals) (rmt:get-keys)))



(exit)

Modified tests/unittests/server.scm from [70755134bd] to [49807e069f].

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 )

(define *db* (db:setup ".db/main.db"))

;; these let me cut and paste from source easily
(define apath *toppath*)
(define dbname ".db/2.db")
(define remote *remotedat*)
(define keyvals  '(("SYSTEM" "a")("RELEASE" "b")))

(test #f #t (rmt:open-main-connection remote apath))
(test #f #t (conndat? (rmt:get-conn *remotedat* *toppath* ".db/main.db")))
(test #f #t (conndat? (rmt:get-conn *remotedat* *toppath* ".db/main.db")))

(test #f ".db/2.db" (list-ref (rmt:send-receive-real *remotedat* *toppath* ".db/main.db" 'get-server `(,apath ,dbname))
			      6))

(thread-sleep! 2)
(test #f #t (rmt:general-open-connection *remotedat* *toppath* ".db/2.db"))

;; (let loop ((end-time (+ (current-seconds) 61)))
  (test #f #t (list? (rmt:get-servers-info *toppath*)))

  (test #f '("SYSTEM" "RELEASE") (rmt:get-keys))
  (test #f 1 (rmt:send-receive 'register-run #f (list keyvals "run1" "new" "n/a" "justme" #f)))
  ;; (print "Got here.")

  (test #f 1 (rmt:send-receive 'register-run 1 (list keyvals "run1" "new" "n/a" "justme" #f)))

  (test #f 2 (rmt:register-run keyvals "run2" "new" "n/a" "justme" #f))
  ;; (test #f 2 (rmt:deregister-server *remotedat* *toppath* iface port server-key dbname

  (test #f 2 (rmt:get-count-servers *remotedat* *toppath*))

  (test #f "run2" (rmt:get-run-name-from-id 2))
  (test #f #f     (rmt:send-receive 'get-test-info-by-id 2 '(2 1)))
  
  (test #f #t     (rmt:general-call 'update-cpuload-diskfree 2 1.5 1e6 1))
;;  (if (< (current-seconds) end-time)(loop end-time)))








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 )

(define *db* (db:setup ".db/main.db"))

;; these let me cut and paste from source easily
(define apath *toppath*)
(define dbname ".db/2.db")
(define remote *db-serv-info*)
(define keyvals  '(("SYSTEM" "a")("RELEASE" "b")))

(test #f #t (rmt:open-main-connection remote apath))
(test #f #t (conndat? (rmt:get-conn *db-serv-info* *toppath* ".db/main.db")))
(test #f #t (conndat? (rmt:get-conn *db-serv-info* *toppath* ".db/main.db")))
(test #f 'server-started (rmt:send-receive-real *db-serv-info* *toppath* ".db/main.db"
					   'start-server `(,apath ,dbname)))


(thread-sleep! 2)
(test #f #t (rmt:general-open-connection *db-serv-info* *toppath* ".db/2.db"))

;; (let loop ((end-time (+ (current-seconds) 61)))
  (test #f #t (list? (rmt:get-servers-info *toppath*)))

  (test #f '("SYSTEM" "RELEASE") (rmt:get-keys))
  (test #f 1 (rmt:send-receive 'register-run #f (list keyvals "run1" "new" "n/a" "justme" #f)))
  ;; (print "Got here.")

  (test #f 1 (rmt:send-receive 'register-run 1 (list keyvals "run1" "new" "n/a" "justme" #f)))

  (test #f 2 (rmt:register-run keyvals "run2" "new" "n/a" "justme" #f))
  ;; (test #f 2 (rmt:deregister-server *db-serv-info* *toppath* iface port server-key dbname

  (test #f 2 (rmt:get-count-servers *db-serv-info* *toppath*))

  (test #f "run2" (rmt:get-run-name-from-id 2))
  (test #f #f     (rmt:send-receive 'get-test-info-by-id 2 '(2 1)))
  
  (test #f #t     (rmt:general-call 'update-cpuload-diskfree 2 1.5 1e6 1))
;;  (if (< (current-seconds) end-time)(loop end-time)))

Added ulex-dual/Makefile version [1659f80ce4].



















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all : ulex.pdf ulex.png

ulex.pdf : ulex.dot
	dot -Tpdf ulex.dot -o ulex.pdf

ulex.png : ulex.dot
	dot -Tpng ulex.dot -o ulex.png


Added ulex-dual/dbmgr.scm version [53b181f4c9].























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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1003
;;======================================================================
;; Copyright 2022, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(declare (unit dbmgrmod))

(declare (uses ulex))
(declare (uses apimod))
(declare (uses pkts))
(declare (uses commonmod))
(declare (uses dbmod))
(declare (uses mtargs))
(declare (uses portloggermod))
(declare (uses debugprint))

(module dbmgrmod
    *

(import scheme
	chicken.base
	chicken.condition
	chicken.file
	chicken.format
	chicken.port
	chicken.process
	chicken.process-context
	chicken.process-context.posix
	chicken.sort
	chicken.string
	chicken.time
	
	(prefix sqlite3 sqlite3:)
	matchable
	md5
	message-digest
	regex
	s11n
	srfi-1
	srfi-18
	srfi-69
	system-information
	typed-records
	
	pkts
	ulex

	commonmod
	apimod
	dbmod
	debugprint
	(prefix mtargs args:)
	portloggermod
	)

;; Configurations for server
;; (tcp-buffer-size 2048)
;; (max-connections 2048) 

;; info about me as a listener and my connections to db servers
;; stored (for now) in *db-serv-info*
;;
(defstruct servdat
  (host #f)
  (port #f)
  (uuid #f)
  (dbfile #f)
  (uconn   #f) ;; this is the listener for this process
  (mode    #f)
  (status 'starting)
  (trynum 0) ;; count the number of ports we've tried
  (conns  (make-hash-table)) ;; apath/dbname => conndat
  ) 

(define *db-serv-info* #f)

(define (servdat->url sdat)
  (conc (servdat-host sdat)":"(servdat-port sdat)))

;; db servers contact info
;;
(defstruct conndat
  (apath    #f)
  (dbname   #f)
  (fullname #f)
  (hostport #f)
  (ipaddr   #f)
  (port     #f)
  (srvpkt   #f)
  (srvkey   #f)
  (lastmsg  0)
  (expires  0))

(define *srvpktspec*
  `((server (host    . h)
	    (port    . p)
	    (servkey . k)
	    (pid     . i)
	    (ipaddr  . a)
	    (dbpath  . d))))

;;======================================================================
;;  S U P P O R T   F U N C T I O N S
;;======================================================================

;; set up the api proc, seems like there should be a better place for this?
;;
;; IS THIS NEEDED ANYMORE? TODO - REMOVE IF POSSIBLE
;;
;; (define api-proc (make-parameter conc))
;; (api-proc api:execute-requests)

;; do we have a connection to apath dbname and
;; is it not expired? then return it
;;
;; else setup a connection
;;
;; if that fails, return '(#f "some reason") ;; NB// convert to raising an exception
;;
(define (rmt:get-conn remdat apath dbname)
  (let* ((fullname (db:dbname->path apath dbname)))
    (hash-table-ref/default (servdat-conns remdat) fullname #f)))

(define (rmt:drop-conn remdat apath dbname)
  (let* ((fullname (db:dbname->path apath dbname)))
    (hash-table-delete! (servdat-conns remdat) fullname)))
  
(define (rmt:find-main-server uconn apath dbname)
  (let* ((pktsdir     (get-pkts-dir apath))
	 (all-srvpkts (get-all-server-pkts pktsdir *srvpktspec*))
	 (viable-srvs (get-viable-servers all-srvpkts dbname)))
    (get-the-server uconn apath viable-srvs)))


(define *connstart-mutex* (make-mutex))
(define *last-main-start* 0)

;; looks for a connection to main, returns if have and not exired
;; creates new otherwise
;; 
;; connections for other servers happens by requesting from main
;;
;; TODO: This is unnecessarily re-creating the record in the hash table
;;
(define (rmt:open-main-connection remdat apath)
  (let* ((fullpath (db:dbname->path apath ".db/main.db"))
	 (conns    (servdat-conns remdat))
	 (conn     (rmt:get-conn remdat apath ".db/main.db")) ;; (hash-table-ref/default conns fullpath #f)) ;; TODO - create call for this
	 (myconn   (servdat-uconn remdat)))
    (cond
     ((not myconn)
      (servdat-uconn-set! remdat (make-udat))
      (rmt:open-main-connection remdat apath))
     ((and conn                                             ;; conn is NOT a socket, just saying ...
	   (< (current-seconds) (conndat-expires conn)))
      #t) ;; we are current and good to go - we'll deal elsewhere with a server that was killed or died 
     ((and conn
	   (>= (current-seconds)(conndat-expires conn)))
      (debug:print-info 0 *default-log-port* "connection to "fullpath" server expired. Reconnecting.")
      (rmt:drop-conn remdat apath ".db/main.db") ;;
      (rmt:open-main-connection remdat apath))
     (else
      ;; Below we will find or create and connect to main
      (debug:print-info 0 *default-log-port* "rmt:open-main-connection - starting from scratch")
      (let* ((dbname         (db:run-id->dbname #f))
	     (the-srv        (rmt:find-main-server myconn apath dbname))
	     (start-main-srv (lambda () ;; call IF there is no the-srv found
			       (mutex-lock! *connstart-mutex*)
			       (if (> (- (current-seconds) *last-main-start*) 5) ;; at least four seconds since last attempt to start main server
				   (begin
				     (api:run-server-process apath dbname)
				     (set! *last-main-start* (current-seconds))
				     (thread-sleep! 1))
				   (thread-sleep! 0.25))
			       (mutex-unlock! *connstart-mutex*)
			       (rmt:open-main-connection remdat apath) ;; TODO: Add limit to number of tries
			       )))
	(if (not the-srv) ;; have server, try connecting to it
	    (start-main-srv)
	    (let* ((srv-addr (server-address the-srv)) ;; need serv
		   (ipaddr   (alist-ref 'ipaddr  the-srv))
		   (port     (alist-ref 'port    the-srv))
		   (srvkey   (alist-ref 'servkey the-srv))
		   (fullpath (db:dbname->path apath dbname))
		   
		   (new-the-srv (make-conndat
				 apath:   apath
				 dbname:  dbname
				 fullname: fullpath
				 hostport: srv-addr
				 ;; socket: (open-nn-connection srv-addr)  - TODO - open ulex connection?
				 ipaddr: ipaddr
				 port: port
				 srvpkt: the-srv
				 srvkey: srvkey ;; generated by rmt:get-signature on the server side
				 lastmsg: (current-seconds)
				 expires: (+ (current-seconds)
					     (server:expiration-timeout)
					     -2) ;; this needs to be gathered during the ping
				 )))
	      (hash-table-set! conns fullpath new-the-srv)))
	#t)))))

;; NB// sinfo is a servdat struct
;;
(define (rmt:general-open-connection sinfo apath dbname #!key (num-tries 5))
  (assert (not (equal? dbname ".db/main.db")) "ERROR: general-open-connection should never be called with main as the db")
  (let* ((mdbname  ".db/main.db") ;; (db:run-id->dbname #f)) TODO: put this back to the lookup when stable
	 (fullname (db:dbname->path apath dbname))
	 (conns    (servdat-conns sinfo))
	 (mconn    (rmt:get-conn sinfo apath ".db/main.db"))
	 (dconn    (rmt:get-conn sinfo apath dbname)))
    #;(if (and mconn
	     (not (debug:print-logger)))
	(begin
	  (debug:print-info 0 *default-log-port* "Turning on logging to main, look in logs dir for main log.")
	  (debug:print-logger rmt:log-to-main)))
    (cond
     ((and mconn
	   dconn
	   (< (current-seconds)(conndat-expires dconn)))
      #t) ;; good to go
     ((not mconn) ;; no channel open to main? open it...
      (rmt:open-main-connection sinfo apath)
      (rmt:general-open-connection sinfo apath dbname num-tries: (- num-tries 1)))
     ((not dconn)                 ;; no channel open to dbname?     
      (let* ((res (rmt:send-receive-real sinfo apath mdbname 'get-server `(,apath ,dbname))))
	(case res
	  ((server-started)
	   (if (> num-tries 0)
	       (begin
		 (thread-sleep! 2)
		 (rmt:general-open-connection sinfo apath dbname num-tries: (- num-tries 1)))
	       (begin
		 (debug:print-error 0 *default-log-port* "Failed to start servers needed or open channel to "apath", "dbname)
		 (exit 1))))
	  (else
	   (if (list? res) ;; server has been registered and the info was returned. pass it on.
	       (begin ;;  ("192.168.0.9" 53817
		      ;;  "5e34239f48e8973b3813221e54701a01" "24310"
		      ;;  "192.168.0.9"
		      ;;  "/home/matt/data/megatest/tests/simplerun"
		 ;;  ".db/1.db")
		 (match
		  res
		  ((host port servkey pid ipaddr apath dbname)
		   (debug:print-info 0 *default-log-port* "got "res)
		   (hash-table-set! conns
				    fullname
				    (make-conndat
				     apath: apath
				     dbname: dbname
				     hostport: (conc host":"port)
				     ;; socket: (open-nn-connection (conc host":"port)) ;; TODO - open ulex connection?
				     ipaddr: ipaddr
				     port: port
				     srvkey: servkey
				     lastmsg: (current-seconds)
				     expires: (+ (current-seconds)
						 (server:expiration-timeout)
						 -2))))
		  (else
		   (debug:print-info 0 *default-log-port* "return data from starting server did not match host port servkey pid ipaddr apath dbname " res)))
		 res)
	       (begin
		 (debug:print-info 0 *default-log-port* "Unexpected result: " res)
		 res)))))))
    #t))

;;======================================================================

;; FOR DEBUGGING SET TO #t
;; (define *localmode* #t)
(define *localmode* #f)
(define *dbstruct* (make-dbr:dbstruct))

;; Defaults to current area
;;
(define (rmt:send-receive-attempted-consolidation cmd rid params #!key (attemptnum 1)(area-dat #f))
  (let* ((apath      *toppath*)
	 (sinfo      *db-serv-info*)
	 (dbname     (db:run-id->dbname rid)))
    (if (not *db-serv-info*)
	(begin
	  (set! *db-serv-info* (make-servdat))
	  (set! sinfo *db-serv-info*)))
    (rmt:open-main-connection sinfo apath)
    (if rid (rmt:general-open-connection sinfo apath dbname))
    ;; (if (not (member cmd '(log-to-main)))
    ;;     (debug:print-info 0 *default-log-port* "rmt:send-receive "cmd" params="params))
    (let* ((cdat (rmt:get-conn sinfo apath dbname)))
      (assert cdat "FATAL: rmt:send-receive-real called without the needed channels opened")
      (let* ((uconn    (servdat-uconn sinfo)) ;; get the interface to ulex
	     ;; then send-receive using the ulex layer to host-port stored in cdat
	     (res      (send-receive uconn (conndat-hostport cdat) cmd params)))
	(conndat-expires-set! cdat (+ (current-seconds)
				      (server:expiration-timeout)
				      -2)) ;; two second margin for network time misalignments etc.
	res))))

; Defaults to current area
;;
(define (rmt:send-receive cmd rid params #!key (attemptnum 1)(area-dat #f))
  (let* ((apath      *toppath*)
         (sinfo      *db-serv-info*)
         (dbname     (db:run-id->dbname rid)))
    (if (not *db-serv-info*) ;; confirm this is really needed
	(begin
	  (set! *db-serv-info* (make-servdat))
	  (set! sinfo *db-serv-info*)))
    (rmt:open-main-connection sinfo apath)
    (if rid (rmt:general-open-connection sinfo apath dbname))
    #;(if (not (member cmd '(log-to-main)))
    (debug:print-info 0 *default-log-port* "rmt:send-receive "cmd" params="params))
    (rmt:send-receive-real sinfo apath dbname cmd params)))

;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; sometime in the future
;;
(define (rmt:send-receive-real sinfo apath dbname cmd params)
  (let* ((cdat (rmt:get-conn sinfo apath dbname)))
    (assert cdat "FATAL: rmt:send-receive-real called without the needed channels opened")
    (let* ((uconn    (servdat-uconn sinfo)) ;; get the interface to ulex
           ;; then send-receive using the ulex layer to host-port stored in cdat
           (res      (send-receive uconn (conndat-hostport cdat) cmd params)))
      ;; since we accessed the server we can bump the expires time up
      (conndat-expires-set! cdat (+ (current-seconds)
                                    (server:expiration-timeout)
                                    -2)) ;; two second margin for network time misalignments etc.
      res)))

;
;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; sometime in the future.
;;
;; Purpose - call the main.db server and request a server be started
;; for the given area path and dbname
;;

(define (rmt:print-db-stats)
  (let ((fmtstr "~40a~7-d~9-d~20,2-f")) ;; "~20,2-f"
    (debug:print 18 *default-log-port* "DB Stats, "(seconds->year-week/day-time (current-seconds))"\n=====================")
    (debug:print 18 *default-log-port* (format #f "~40a~8a~10a~10a" "Cmd" "Count" "TotTime" "Avg"))
    (for-each (lambda (cmd)
		(let ((cmd-dat (hash-table-ref *db-stats* cmd)))
		  (debug:print 18 *default-log-port* (format #f fmtstr cmd (vector-ref cmd-dat 0) (vector-ref cmd-dat 1) (/ (vector-ref cmd-dat 1)(vector-ref cmd-dat 0))))))
	      (sort (hash-table-keys *db-stats*)
		    (lambda (a b)
		      (> (vector-ref (hash-table-ref *db-stats* a) 0)
			 (vector-ref (hash-table-ref *db-stats* b) 0)))))))

(define (rmt:get-max-query-average run-id)
  (mutex-lock! *db-stats-mutex*)
  (let* ((runkey (conc "run-id=" run-id " "))
	 (cmds   (filter (lambda (x)
			   (substring-index runkey x))
			 (hash-table-keys *db-stats*)))
	 (res    (if (null? cmds)
		     (cons 'none 0)
		     (let loop ((cmd (car cmds))
				(tal (cdr cmds))
				(max-cmd (car cmds))
				(res 0))
		       (let* ((cmd-dat (hash-table-ref *db-stats* cmd))
			      (tot     (vector-ref cmd-dat 0))
			      (curravg (/ (vector-ref cmd-dat 1) (vector-ref cmd-dat 0))) ;; count is never zero by construction
			      (currmax (max res curravg))
			      (newmax-cmd (if (> curravg res) cmd max-cmd)))
			 (if (null? tal)
			     (if (> tot 10)
				 (cons newmax-cmd currmax)
				 (cons 'none 0))
			     (loop (car tal)(cdr tal) newmax-cmd currmax)))))))
    (mutex-unlock! *db-stats-mutex*)
    res))

;; host and port are used to ensure we are remove proper records
(define (rmt:server-shutdown host port)
  (let ((dbfile   (servdat-dbfile *db-serv-info*)))
    (debug:print-info 0 *default-log-port* "dbfile is "dbfile)
    (if dbfile
	(let* ((am-server  (args:get-arg "-server"))
	       (dbfile     (args:get-arg "-db"))
	       (apath      *toppath*)
	       #;(sinfo     *remotedat*)) ;; foundation for future fix
	  (if *dbstruct-db*
	      (let* ((dbdat      (db:get-dbdat *dbstruct-db* apath dbfile))
		     (db         (dbr:dbdat-db dbdat))
		     (inmem      (dbr:dbdat-db dbdat))   ;; WRONG
		     )
		;; do a final sync here
		(debug:print-info 0 *default-log-port* "Doing final sync for "apath" "dbfile" at "(current-seconds))
		(db:sync-inmem->disk *dbstruct-db* apath dbfile force-sync: #t)
		;; let's finalize here
		(debug:print-info 0 *default-log-port* "Finalizing db and inmem")
		(if (sqlite3:database? db)
		    (sqlite3:finalize! db)
		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, db is not a database, not finalizing..."))
		(if (sqlite3:database? inmem)
		    (sqlite3:finalize! inmem)
		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, inmem is not a database, not finalizing..."))
		(debug:print-info 0 *default-log-port* "Finalizing db and inmem complete"))
	      (debug:print-info 0 *default-log-port* "Db was never opened, no cleanup to do."))
	  (if (not am-server)
	      (debug:print-info 0 *default-log-port* "I am not a server, should NOT get here!")
	      (if (string-match ".*/main.db$" dbfile)
		  (let ((pkt-file (conc (get-pkts-dir *toppath*)
					"/" (servdat-uuid *db-serv-info*)
					".pkt")))
		    (debug:print-info 0 *default-log-port* "removing pkt "pkt-file)
		    (delete-file* pkt-file)
		    (debug:print-info 0 *default-log-port* "Releasing lock (if any) for "dbfile ", host "host", port "port)
		    (db:with-lock-db
		     (servdat-dbfile *db-serv-info*)
		     (lambda (dbh dbfile)
		       (db:release-lock dbh dbfile host port)))) ;; I'm not the server - should not have a lock to remove
		  (let* ((sdat *db-serv-info*) ;; we have a run-id server
			 (host (servdat-host sdat))
			 (port (servdat-port sdat))
			 (uuid (servdat-uuid sdat))
			 (res  (rmt:deregister-server *db-serv-info* *toppath* host port uuid dbfile)))
		    (debug:print-info 0 *default-log-port* "deregistered-server, res="res)
		    (debug:print-info 0 *default-log-port* "deregistering server "host":"port" with uuid "uuid)
		    )))))))


(define (common:run-sync?)
    ;; (and (common:on-homehost?)
  (args:get-arg "-server"))

(define *rmt:run-mutex* (make-mutex))
(define *rmt:run-flag* #f)

(define (listener-running?)
  (and *db-serv-info*
       (servdat-uconn *db-serv-info*)))

;; Main entry point to start a server. was start-server
(define (rmt:run hostn)
  (mutex-lock! *rmt:run-mutex*)
  (if *rmt:run-flag*
      (begin
	(debug:print-warn 0 *default-log-port* "rmt:run already running.")
	(mutex-unlock! *rmt:run-mutex*))
      (begin
	(set! *rmt:run-flag* #t)
	(mutex-unlock! *rmt:run-mutex*)
	;;  ;; Configurations for server
	;;  (tcp-buffer-size 2048)
	;;  (max-connections 2048) 
	(debug:print 2 *default-log-port* "PID: "(current-process-id)". Attempting to start the server ...")
	(if (listener-running?)
	    (let* ((uconn (servdat-uconn *db-serv-info*)))
	      (wait-and-close uconn))
	    (let* ((port            (portlogger:open-run-close portlogger:find-port))
		   (handler-proc    (lambda (rem-host-port qrykey cmd params) ;;
				      (set! *db-last-access* (current-seconds))
				      (assert (list? params) "FATAL: handler called with non-list params")
				      (assert (args:get-arg "-server") "FATAL: handler called on non-server side. cmd="cmd", params="params)
				      (debug:print 0 *default-log-port* "handler call: "cmd", params="params)
				      (api:execute-requests *dbstruct-db* cmd params))))
	      ;; (api:process-request *dbstuct-db* 
	      (if (not *db-serv-info*)
		  (set! *db-serv-info* (make-servdat host: hostn port: port)))
	      (let* ((uconn (run-listener handler-proc port))
		     (rport (udat-port uconn))) ;; the real port
		(servdat-host-set! *db-serv-info* hostn)
		(servdat-port-set! *db-serv-info* rport)
		(servdat-uconn-set! *db-serv-info* uconn)
		(wait-and-close uconn)
		(db:print-current-query-stats)
		)))
	(let* ((host (servdat-host *db-serv-info*))
	       (port (servdat-port *db-serv-info*))
	       (mode (or (servdat-mode *db-serv-info*)
			 "non-db")))
	  ;; server exit stuff here
	  ;; (rmt:server-shutdown host port) - always do in on-exit
	  ;; (portlogger:open-run-close portlogger:set-port port "released") ;; moved to on-exit 
	  (debug:print-info 0 *default-log-port* "Server "host":"port" mode "mode"shutdown complete. Exiting")
	  ))))

;;======================================================================
;; S E R V E R   U T I L I T I E S 
;;======================================================================


;;======================================================================
;; NEW SERVER METHOD
;;======================================================================

;; only use for main.db - need to re-write some of this :(
;;
(define (get-lock-db sdat dbfile host port)
  (assert host "FATAL: get-lock-db called with host not set.")
  (assert port "FATAL: get-lock-db called with port not set.")
  (let* ((dbh (db:open-run-db dbfile db:initialize-db)) ;; open-run-db creates a standard db with schema used by all situations
	 (res (db:get-iam-server-lock dbh dbfile host port))
	 (uconn (servdat-uconn sdat)))
    ;; res => list then already locked, check server is responsive
    ;;     => #t then sucessfully got the lock
    ;;     => #f reserved for future use as to indicate something went wrong
    (match res
      ((owner_pid owner_host owner_port event_time)
       (if (server-ready? uconn (conc owner_host":"owner_port) "abc")
	   #f      ;; locked by someone else
	   (begin  ;; locked by someone dead and gone
	     (debug:print 0 *default-log-port* "WARNING: stale lock - have to steal it. This may fail.")
	     (db:steal-lock-db dbh dbfile port))))
      (#t  #t) ;; placeholder so that we don't touch res if it is #t
      (else (set! res #f)))
    (sqlite3:finalize! dbh)
    res))


(define (register-server pkts-dir pkt-spec host port servkey ipaddr dbpath)
  (let* ((pkt-dat `((host    . ,host)
		    (port    . ,port)
		    (servkey . ,servkey)
		    (pid     . ,(current-process-id))
		    (ipaddr  . ,ipaddr)
		    (dbpath  . ,dbpath)))
	 (uuid    (write-alist->pkt
		   pkts-dir
		   pkt-dat
		   pktspec: pkt-spec
		   ptype: 'server)))
    (debug:print 0 *default-log-port* "Server on "host":"port" registered in pkt "uuid)
    uuid))

(define (get-pkts-dir #!optional (apath #f))
  (let* ((effective-toppath (or *toppath* apath)))
    (assert effective-toppath
	    "ERROR: get-pkts-dir called without *toppath* set. Exiting.")
    (let* ((pdir (conc effective-toppath "/.meta/srvpkts")))
      (if (file-exists? pdir)
	  pdir
	  (begin
	    (handle-exceptions ;; this exception handler should NOT be needed but ...
		exn
		pdir
	      (create-directory pdir #t))
	    pdir)))))

;; given a pkts dir read 
;;
(define (get-all-server-pkts pktsdir-in pktspec)
  (let* ((pktsdir  (if (file-exists? pktsdir-in)
		       pktsdir-in
		       (begin
			 (create-directory pktsdir-in #t)
			 pktsdir-in)))
	 (all-pkt-files (glob (conc pktsdir "/*.pkt"))))
    (map (lambda (pkt-file)
	   (read-pkt->alist pkt-file pktspec: pktspec))
	 all-pkt-files)))

(define (server-address srv-pkt)
  (conc (alist-ref 'host srv-pkt) ":"
	(alist-ref 'port srv-pkt)))
	
(define (server-ready? uconn host-port key) ;; server-address is host:port
  (let* ((params `((cmd . ping)(key . ,key)))
	 (data `((cmd . ping)
		 (key . ,key)
		 (params . ,params))) ;; I don't get it.
	 (res  (send-receive uconn host-port 'ping data)))
    (if (eq? res 'ping-ack) ;; yep, likely it is who we want on the other end
	res
	#f)))
;; (begin (debug:print-info 0 *default-log-port* "server-ready? => "res) #f))))

; from the pkts return servers associated with dbpath
;; NOTE: Only one can be alive - have to check on each
;;       in the list of pkts returned
;;
(define (get-viable-servers serv-pkts dbpath)
  (let loop ((tail serv-pkts)
	     (res  '()))
    (if (null? tail)
	res ;; NOTE: sort by age so oldest is considered first
	(let* ((spkt (car tail)))
	  (loop (cdr tail)
		(if (equal? dbpath (alist-ref 'dbpath spkt))
		    (cons spkt res)
		    res))))))

(define (remove-pkts-if-not-alive uconn serv-pkts)
  (filter (lambda (pkt)
	    (let* ((host (alist-ref 'host pkt))
		   (port (alist-ref 'port pkt))
		   (host-port (conc host":"port))
		   (key  (alist-ref 'servkey  pkt))
		   (pktz (alist-ref 'Z        pkt))
		   (res  (server-ready? uconn host-port key)))
	      (if res
		  res
		  (let* ((pktsdir (get-pkts-dir *toppath*))
			 (pktpath (conc pktsdir"/"pktz".pkt")))
		    (debug:print 0 *default-log-port* "WARNING: pkt with no server "pktpath)
		    (delete-file* pktpath)
		    #f))))
	  serv-pkts))

;; from viable servers get one that is alive and ready
;;
(define (get-the-server uconn apath serv-pkts)
  (let loop ((tail serv-pkts))
    (if (null? tail)
	#f
	(let* ((spkt  (car tail))
	       (host  (alist-ref 'ipaddr spkt))
	       (port  (alist-ref 'port spkt))
	       (host-port (conc host":"port))
	       (dbpth (alist-ref 'dbpath spkt))
	       (srvkey (alist-ref 'Z spkt)) ;; (alist-ref 'srvkey spkt))
	       (addr  (server-address spkt)))
	  (if (server-ready? uconn host-port srvkey)
	      spkt
	      (loop (cdr tail)))))))

;; am I the "first" in line server? I.e. my D card is smallest
;; use Z card as tie breaker
;;
(define (get-best-candidate serv-pkts dbpath)
  (if (null? serv-pkts)
      #f
      (let loop ((tail serv-pkts)
		 (best  (car serv-pkts)))
	(if (null? tail)
	    best
	    (let* ((candidate (car tail))
		   (candidate-bd (string->number (alist-ref 'D candidate)))
		   (best-bd      (string->number (alist-ref 'D best)))
		   ;; bigger number is younger
		   (candidate-z  (alist-ref 'Z candidate))
		   (best-z       (alist-ref 'Z best))
		   (new-best     (cond
				  ((> best-bd candidate-bd) ;; best is younger than candidate
				   candidate)
				  ((< best-bd candidate-bd) ;; candidate is younger than best
				   best)
				  (else
				   (if (string>=? best-z candidate-z)
				       best
				       candidate))))) ;; use Z card as tie breaker
	      (if (null? tail)
		  new-best
		  (loop (cdr tail) new-best)))))))
	  
;;======================================================================
;; END NEW SERVER METHOD
;;======================================================================

;; sdat must be defined and the host and port set and the same as previous
;;
(define (host-port-is-stable? sdat old-host old-port)
  (and sdat
       (let ((new-host (servdat-host sdat))
	     (new-port (servdat-port sdat)))
	 (and new-host
	      new-port
	      (equal? new-host old-host)
	      (equal? new-port old-port)))))

;; if .db/main.db check the pkts
;; 
(define (rmt:wait-for-server pkts-dir db-file server-key)
  (let* ((sdat *db-serv-info*))
    (let loop ((start-time (current-milliseconds))
	       (changed    #t)
	       (last-sdat  "not this")
	       (last-host  #f)
	       (last-port  #f))
      (begin ;; let ((sdat #f))
	(thread-sleep! 0.01)
	(debug:print-info 0 *default-log-port* "Waiting for server alive signature")
	(mutex-lock! *heartbeat-mutex*)
	(set! sdat *db-serv-info*)
	(mutex-unlock! *heartbeat-mutex*)
	(if (and sdat
		 (not changed)
		 (>= (- (current-milliseconds) start-time) 100))
	    (let* ((uconn (servdat-uconn sdat)))
	      (servdat-status-set! sdat 'iface-stable)
	      (debug:print-info 0 *default-log-port* "Received server alive signature, now attempting to lock in server")
	      ;; create a server pkt in *toppath*/.meta/srvpkts
	      
	      ;; TODO:
	      ;;   1. change sdat to stuct
	      ;;   2. add uuid to struct
	      ;;   3. update uuid in sdat here
	      ;;
	      (servdat-uuid-set! sdat
				 (register-server
				  pkts-dir *srvpktspec*
				  (get-host-name)
				  (servdat-port sdat) server-key
				  (servdat-host sdat) db-file))
	      ;; (set! *my-signature* (servdat-uuid sdat)) ;; replace with Z, no, stick with proper key
	      ;; now read pkts and see if we are a contender
	      (let* ((all-pkts     (get-all-server-pkts pkts-dir *srvpktspec*))
		     (viables      (get-viable-servers all-pkts db-file))
		     (alive        (remove-pkts-if-not-alive uconn viables))
		     (best-srv     (get-best-candidate alive db-file))
		     (best-srv-key (if best-srv (alist-ref 'servkey best-srv) #f))
		     (i-am-srv     (equal? best-srv-key server-key))
		     (delete-pkt   (lambda ()
				     (let* ((pktfile (conc (get-pkts-dir *toppath*)
							 "/" (servdat-uuid *db-serv-info*)
							 ".pkt")))
				       (debug:print-info 0 *default-log-port* "Attempting to remove bogus pkt file "pktfile)
				       (delete-file* pktfile))))) ;; remove immediately instead of waiting for on-exit
		(debug:print 0 *default-log-port* "best-srv-key: "best-srv-key", server-key: "server-key", i-am-srv: "i-am-srv)
		;; am I the best-srv, compare server-keys to know
		(if i-am-srv
		    (if (get-lock-db sdat db-file (servdat-host sdat)(servdat-port sdat)) ;; (db:get-iam-server-lock *dbstruct-db* *toppath* run-id)
			(begin
			  (debug:print-info 0 *default-log-port* "I'm the server!")
			  (servdat-dbfile-set! sdat db-file)
			  (servdat-status-set! sdat 'db-locked))
			(begin
			  (debug:print-info 0 *default-log-port* "I'm not the server, exiting.")
			  (bdat-time-to-exit-set! *bdat* #t)
			  (delete-pkt)
			  (thread-sleep! 0.2)
			  (exit)))
		    (begin
		      (debug:print-info 0 *default-log-port*
				   "Keys do not match "best-srv-key", "server-key", exiting.")
		      (bdat-time-to-exit-set! *bdat* #t)
		      (delete-pkt)
		      (thread-sleep! 0.2)
		      (exit)))
		sdat))
	    (begin ;; sdat not yet contains server info
	      (debug:print-info 0 *default-log-port* "Still waiting, last-sdat=" last-sdat)
	      (thread-sleep! 0.1)
	      (if (> (- (current-milliseconds) start-time) 120000) ;; been waiting for two minutes
		  (begin
		    (debug:print-error 0 *default-log-port* "transport appears to have died, exiting server")
		    (exit))
		  (loop start-time
			(not (host-port-is-stable? sdat last-host last-port))
			sdat
			(servdat-host sdat)
			(servdat-port sdat)))))))))

(define (rmt:register-server sinfo apath iface port server-key dbname)
  (servdat-conns sinfo) ;; just checking types
  (rmt:open-main-connection sinfo apath) ;; we need a channel to main.db
  (rmt:send-receive-real sinfo apath      ;; params: host port servkey pid ipaddr dbpath
			 (db:run-id->dbname #f)
			 'register-server `(,iface
					    ,port
					    ,server-key
					    ,(current-process-id)
					    ,iface
					    ,apath
					    ,dbname)))

(define (rmt:get-count-servers sinfo apath)
  (servdat-conns sinfo) ;; just checking types
  (rmt:open-main-connection sinfo apath) ;; we need a channel to main.db
  (rmt:send-receive-real sinfo apath      ;; params: host port servkey pid ipaddr dbpath
			 (db:run-id->dbname #f)
			 'get-count-servers `(,apath)))

(define (rmt:get-servers-info apath)
  (rmt:send-receive 'get-servers-info #f `(,apath)))

(define (rmt:deregister-server db-serv-info apath iface port server-key dbname)
  (rmt:open-main-connection db-serv-info apath) ;; we need a channel to main.db
  (rmt:send-receive db-serv-info apath      ;; params: host port servkey pid ipaddr dbpath
                         (db:run-id->dbname #f)
                         'deregister-server `(,iface
                                              ,port
                                              ,server-key
                                              ,(current-process-id)
                                              ,iface
                                              ,apath
                                              ,dbname)))

(define (rmt:wait-for-stable-interface #!optional (num-tries-allowed 100))
  ;; wait until *db-serv-info* stops changing
  (let* ((stime (current-seconds)))
    (let loop ((last-host  #f)
	       (last-port  #f)
	       (tries 0))
      (let* ((curr-host (and *db-serv-info* (servdat-host *db-serv-info*)))
	     (curr-port (and *db-serv-info* (servdat-port *db-serv-info*))))
	;; first we verify port and interface, update *db-serv-info* in need be.
	(cond
	 ((> tries num-tries-allowed)
	  (debug:print 0 *default-log-port* "rmt:keep-running, giving up after trying for several minutes.")
	  (exit 1))
	 ((not *db-serv-info*)
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((or (not last-host)(not last-port))
	  (debug:print 0 *default-log-port* "rmt:keep-running, still no interface, tries="tries)
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((or (not (equal? last-host curr-host))
	      (not (equal? last-port curr-port)))
	  (debug:print-info 0 *default-log-port* "WARNING: interface changed, refreshing iface and port info")
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((< (- (current-seconds) stime) 1) ;; keep up the looping until at least 3 seconds have passed
	  (thread-sleep! 0.5)
	  (loop curr-host curr-port (+ tries 1)))
	 (else
	  (rmt:get-signature) ;; sets *my-signature* as side effect
	  (servdat-status-set! *db-serv-info* 'interface-stable)
	  (debug:print 0 *default-log-port*
		       "SERVER STARTED: " curr-host
		       ":" curr-port
		       " AT " (current-seconds) " server signature: " *my-signature*
		       " with "(servdat-trynum *db-serv-info*)" port changes")
	  (flush-output *default-log-port*)
	  #t))))))

;; run rmt:keep-running in a parallel thread to monitor that the db is being 
;; used and to shutdown after sometime if it is not.
;;
(define (rmt:keep-running dbname) 
  ;; if none running or if > 20 seconds since 
  ;; server last used then start shutdown
  ;; This thread waits for the server to come alive
  (debug:print-info 0 *default-log-port* "Starting the sync-back, keep alive thread in server")

  (let* ((sinfo             *db-serv-info*)
	 (server-start-time (current-seconds))
	 (pkts-dir          (get-pkts-dir))
	 (server-key        (rmt:get-signature)) ;; This servers key
	 (is-main           (equal? (args:get-arg "-db") ".db/main.db"))
	 (last-access       0)
	 (server-timeout    (server:expiration-timeout))
	 (shutdown-server-sequence (lambda (host port)
				     (set! *unclean-shutdown* #f) ;; Should not be needed anymore
				     (debug:print-info 0 *default-log-port* "Starting to shutdown the server. pid="(current-process-id))
				     ;; (rmt:server-shutdown host port) -- called in on-exit
				     ;; (portlogger:open-run-close portlogger:set-port port "released") called in on-exit
				     (exit)))
	 (timed-out?        (lambda ()
			      (<= (+ last-access server-timeout)
				  (current-seconds)))))
    (servdat-dbfile-set! *db-serv-info* (args:get-arg "-db"))
    ;; main and run db servers have both got wait logic (could/should merge it)
    (if is-main
	(rmt:wait-for-server pkts-dir dbname server-key)
	(rmt:wait-for-stable-interface))
    ;; this is our forever loop
    (let* ((iface (servdat-host *db-serv-info*))
	   (port  (servdat-port *db-serv-info*))
	   (uconn (servdat-uconn *db-serv-info*)))
      (let loop ((count          0)
		 (bad-sync-count 0)
		 (start-time     (current-milliseconds)))
	(if (and (not is-main)
		 (common:low-noise-print 60 "servdat-status"))
	    (debug:print-info 0 *default-log-port* "servdat-status is " (servdat-status *db-serv-info*)))

	(mutex-lock! *heartbeat-mutex*)
	;; set up the database handle
	(if (not *dbstruct-db*) ;; no db opened yet, open the db and register with main if appropriate
	      (let ((watchdog #f)) ;; (bdat-watchdog *bdat*)))
		(debug:print 0 *default-log-port* "SERVER: dbprep")
		(db:setup dbname) ;; sets *dbstruct-db* as side effect
		(servdat-status-set! *db-serv-info* 'db-opened)
		;; IFF I'm not main, call into main and register self
		(if (not is-main)
		    (let ((res (rmt:register-server sinfo
						    *toppath* iface port
						    server-key dbname)))
		      (if res ;; we are the server
			  (servdat-status-set! *db-serv-info* 'have-interface-and-db)
			  ;; now check that the db locker is alive, clear it out if not
			  (let* ((serv-info (rmt:server-info *toppath* dbname)))
			    (match serv-info
				   ((host port servkey pid ipaddr apath dbpath)
				    (if (not (server-ready? uconn (conc host":"port) servkey))
					(begin
					  (debug:print-info 0 *default-log-port* "Server registered but not alive. Removing and trying again.")
					  (rmt:deregister-server sinfo apath host port servkey dbpath) ;; servkey pid ipaddr apath dbpath)
					  (loop (+ count 1) bad-sync-count start-time))))
				   (else
				    (debug:print 0 *default-log-port* "We are not the server for "dbname", exiting. Server info is: "serv-info)
				    (exit)))))))
		(debug:print 0 *default-log-port*
			     "SERVER: running, db "dbname" opened, megatest version: "
			   (common:get-full-version))
	      ))
	
	(db:sync-inmem->disk *dbstruct-db* *toppath* dbname force-sync: #t)
	
	(mutex-unlock! *heartbeat-mutex*)
	
	;; when things go wrong we don't want to be doing the various
	;; queries too often so we strive to run this stuff only every
	;; four seconds or so.
	(let* ((sync-time (- (current-milliseconds) start-time))
	       (rem-time  (quotient (- 4000 sync-time) 1000)))
	  (if (and (<= rem-time 4)
		   (>  rem-time 0))
	      (thread-sleep! rem-time)))
    
	;; Transfer *db-last-access* to last-access to use in checking that we are still alive
	(set! last-access *db-last-access*)
	
	(if (< count 1) ;; 3x3 = 9 secs aprox
	    (loop (+ count 1) bad-sync-count (current-milliseconds)))
	
	(if (common:low-noise-print 60 "dbstats")
	    (begin
	      (debug:print 0 *default-log-port* "Server stats:")
	      (db:print-current-query-stats)))
	(let* ((hrs-since-start  (/ (- (current-seconds) server-start-time) 3600)))
	  (cond
	   ((not *server-run*)
	    (debug:print-info 0 *default-log-port* "*server-run* set to #f. Shutting down.")
	    (shutdown-server-sequence (get-host-name) port))
	   ((timed-out?)
	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
	    (shutdown-server-sequence (get-host-name) port))
	   ((and *server-run*
		 (or (not (timed-out?))
		     (if is-main ;; do not exit if there are other servers (keep main open until all others gone)
			 (> (rmt:get-count-servers sinfo *toppath*) 1)
			 #f)))
	    (if (common:low-noise-print 120 "server continuing")
		(debug:print-info 0 *default-log-port* "Server continuing, seconds since last db access: " (- (current-seconds) last-access)))
	    (loop 0 bad-sync-count (current-milliseconds)))
	   (else
	    (set! *unclean-shutdown* #f)
	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
	    (shutdown-server-sequence (get-host-name) port)
	    #;(debug:print-info 0 *default-log-port* "Sending 'quit to server, received: "
			      (open-send-receive-nn (conc iface":"port)      ;; do this here and not in server-shutdown
						    (sexpr->string 'quit))))))))))

(define (rmt:get-reasonable-hostname)
  (let* ((inhost (or (args:get-arg "-server") "-")))
    (if (equal? inhost "-")
	(get-host-name)
	inhost)))

;; Call this to start the actual server
;;
;; all routes though here end in exit ...
;;
;; This is the point at which servers are started
;;
(define (rmt:server-launch dbname)
  (debug:print-info 0 *default-log-port* "Entered rmt:server-launch")
  (let* ((th2 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server run thread started")
			     (rmt:run (rmt:get-reasonable-hostname)))
			   "Server run"))
	 (th3 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server monitor thread started")
			     (if (args:get-arg "-server")
				 (rmt:keep-running dbname)
				 #;(rmt:wait-for-stable-interface)))
			     "Keep running")))
    (thread-start! th2)
    (thread-sleep! 0.252) ;; give the server time to settle before starting the keep-running monitor.
    (thread-start! th3)
    (set! *didsomething* #t)
    (thread-join! th2)
    (thread-join! th3))
  #f)
	    
;;======================================================================
;;  S E R V E R   -  D I R E C T   C A L L S
;;======================================================================

(define (rmt:kill-server run-id)
  (rmt:send-receive 'kill-server #f (list run-id)))

(define (rmt:start-server run-id)
  (rmt:send-receive 'start-server #f (list run-id)))

(define (rmt:server-info apath dbname)
  (rmt:send-receive 'get-server-info #f (list apath dbname)))


)

Added ulex-dual/ulex.dot version [08f8e06c6d].

















































































































































































































































































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//  Copyright 2006-2017, Matthew Welland.
// 
// This file is part of Megatest.
// 
//     Megatest is free software: you can redistribute it and/or modify
//     it under the terms of the GNU General Public License as published by
//     the Free Software Foundation, either version 3 of the License, or
//     (at your option) any later version.
// 
//     Megatest is distributed in the hope that it will be useful,
//     but WITHOUT ANY WARRANTY; without even the implied warranty of
//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//     GNU General Public License for more details.
// 
//     You should have received a copy of the GNU General Public License
//     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

digraph G {

  // graph[center=true, margin=0.2, nodesep=0.1, ranksep=0.3]

  layout=neato;
  // layout=fdp;
  // overlap=scalexy; //false, compress, ...
  overlap=scalexy;
  // sep="+1"; // 0.1, +1
  sep="-0.1";
 
  user_program [label="user program"];
  
  subgraph cluster_1 {
    node [style=filled,shape=oval];
    label = "caller";
    color=brown;

    send_receive [label="(send-receive uconn\n   host-port qrykey cmd data)"];
    send [label="(send uconn host-port\n    qrykey cmd data)"];
    ulex_cmd_loopcaller [label="(ulex-cmd-loop uconn)"];
    ulex_handlercaller [label="(ulex-handler uconn rdat)"];
    mailbox [label="mailbox\n\nrdat\n...",shape=box];
    
    send_receive -> send;
    ulex_cmd_loopcaller -> ulex_handlercaller;
    ulex_handlercaller -> mailbox;
    mailbox -> send_receive;
  }

  subgraph cluster_2 {
    node [shape=oval];
    label = "listener";
    color=green;

    ulex_cmd_loop [label="(ulex-cmd-loop uconn)"];
    ulex_handler [label="(ulex-handler \nuconn rdat)"];
    add_to_work_queue [label="(add-to-work-queue\n  uconn rdat)"];
    queue [label="queue\n\nrdat\n...",shape=box];
    process_work_queue [label="(process-work-queue uconn)"];
    do_work [label="(do-work uconn rdat)\nrdat: '(rem-host-port qrykey cmd params)"];
    user_proc [label="(proc rem-host-port\n    qrykey cmd params)\n;; proc supplied by user"];
    sendlis [label="(send uconn host-port\n    qrykey 'response result)"];
    
    ulex_cmd_loop -> ulex_handler [label="rdat"];
    ulex_handler -> add_to_work_queue [label="rdat"];

    add_to_work_queue -> queue [label="rdat"];

    subgraph cluster_3 {
      label = "remote work";
      color=blue;
      
      queue -> process_work_queue [label="rdat"];
      process_work_queue -> do_work [label="rdat"];
      do_work -> user_proc; // [label="rdat: '(rem-host-port\n   qrykey cmd params)"];
    }
  }

  user_proc -> sendlis;
  user_program -> send_receive;
  send_receive -> user_program;
  
  send -> ulex_cmd_loop [label="rdat: '(host-port\n  qrykey cmd data)"];
  sendlis -> ulex_cmd_loopcaller [label="rdat: '(host-port qrykey\n  'response result)"];
  ulex_handler -> send [label="'ack"];
  ulex_handlercaller -> sendlis [label="'ack"];
  
}


// 	check_available_queue       -> remove_entries_over_10s_old;
// 	remove_entries_over_10s_old -> set_available [label="num_avail < 3"];
// 	remove_entries_over_10s_old -> exit [label="num_avail > 2"];
// 
// 	set_available               -> delay_2s;
// 	delay_2s          -> check_place_in_queue;
// 
// 	check_place_in_queue        -> "http:transport-launch" [label="at head"];
// 	check_place_in_queue        -> exit [label="not at head"];
// 
// 	"client:login"              -> "server:shutdown" [label="login failed"];
// 	"server:shutdown"           -> exit;	
// 
// 	subgraph cluster_2 {
// 		"http:transport-launch"       -> "http:transport-run";
// 		"http:transport-launch"       -> "http:transport-keep-running";
// 
// 		"http:transport-keep-running" -> "tests running?";
// 		"tests running?"              -> "client:login" [label=yes];
// 		"tests running?"              -> "server:shutdown" [label=no];
// 		"client:login"                -> delay_5s [label="login ok"];
// 		delay_5s                      -> "http:transport-keep-running";
// 	}
// 
	// start_server -> "server_running?";
	// "server_running?" -> set_available [label="no"];
	// "server_running?" -> delay_2s [label="yes"];
	// delay_2s -> "still_running?";
	// "still_running?" -> ping_server [label=yes];
	// "still_running?" -> set_available [label=no];
	// ping_server -> exit [label=alive];
	// ping_server -> remove_server_record [label=dead];
	// remove_server_record -> set_available;
	// set_available -> avail_delay [label="delay 3s"];
	// avail_delay -> "first_in_queue?";
	// 
	// "first_in_queue?" -> set_running [label=yes];
	// set_running -> get_next_port -> handle_requests;
	// "first_in_queue?" -> "dead_entry_in_queue?" [label=no];
	// "dead_entry_in_queue?" -> "server_running?" [label=no];
	// "dead_entry_in_queue?" -> "remove_dead_entries" [label=yes];
	// remove_dead_entries -> "server_running?";
	// 
	// handle_requests -> start_shutdown [label="no traffic\nno running tests"];
	// handle_requests -> shutdown_request;
	// start_shutdown -> shutdown_delay;
	// shutdown_request -> shutdown_delay;
	// shutdown_delay -> exit;

Added ulex-dual/ulex.pdf version [a11f1937d3].

cannot compute difference between binary files

Added ulex-dual/ulex.png version [1ca21b08ef].

cannot compute difference between binary files

Added ulex-dual/ulex.scm version [ba1e2ab076].

































































































































































































































































































































































































































































































































































































































































































































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;; ulex: Distributed sqlite3 db
;;;
;; Copyright (C) 2018-2021 Matt Welland
;; Redistribution and use in source and binary forms, with or without
;; modification, is permitted.
;;
;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;; ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
;; OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
;; BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
;; USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
;; DAMAGE.

;;======================================================================
;; ABOUT:
;;   See README in the distribution at https://www.kiatoa.com/fossils/ulex
;; NOTES:
;;   Why sql-de-lite and not say, dbi?  - performance mostly, then simplicity.
;;
;;======================================================================

(module ulex
	*
	#;(
     
     ;; NOTE: looking for the handler proc - find the run-listener :)
     
     run-listener     ;; (run-listener handler-proc [port]) => uconn

     ;; NOTE: handler-proc params;
     ;;       (handler-proc rem-host-port qrykey cmd params)

     send-receive     ;; (send-receive uconn host-port cmd data)

     ;; NOTE: cmd can be any plain text symbol except for these;
     ;;         'ping 'ack 'goodbye 'response
     
     set-work-handler ;; (set-work-handler proc)

     wait-and-close   ;; (wait-and-close uconn)

     ulex-listener?
     
     ;; needed to get the interface:port that was automatically found
     udat-port
     udat-host-port
     
     ;; for testing only
     ;; pp-uconn
     
     ;; parameters
     work-method   ;; parameter; 'threads, 'mailbox, 'limited, 'direct
     return-method ;; parameter; 'mailbox, 'polling, 'direct
     )

(import scheme
	chicken.base
	chicken.file
	chicken.io
	chicken.time
	chicken.condition
	chicken.port
	chicken.string
	chicken.sort
	chicken.pretty-print
	chicken.tcp
	
	address-info
	mailbox
	matchable
	;; queues
	regex
	regex-case
	simple-exceptions
	s11n
	srfi-1
	srfi-18
	srfi-4
	srfi-69
	system-information
	;; tcp6
	tcp-server
	typed-records

	md5
	message-digest
	(prefix base64 base64:)
	z3
	)

;; udat struct, used by both caller and callee
;; instantiated as uconn by convention
;;
(defstruct udat
  ;; the listener side
  (port #f)
  (host-port #f) ;; my host:port
  (socket #f)
  ;; the peers
  (peers  (make-hash-table)) ;; host:port->peer
  ;; work handling
  (work-queue (make-mailbox))
  (work-proc  #f)                ;; set by user
  (cnum       0)                 ;; cookie number
  (mboxes     (make-hash-table)) ;; for the replies
  (avail-cmboxes '())            ;; list of (<cookie> . <mbox>) for re-use
  ;; threads
  (numthreads 10)
  (cmd-thread #f)
  (work-queue-thread #f)
  (num-threads-running 0)
  ) 

;;======================================================================
;; serialization
;;   NOTE: I've had problems with read/write and s11n serialize, deserialize
;;         thus the inefficient method here
;;======================================================================

(define serializing-method (make-parameter 'complex))


;; NOTE: Can remove the regex and base64 encoding for zmq
(define (obj->string obj)
  (case (serializing-method)
    ((complex)
     (string-substitute
      (regexp "=") "_"
      (base64:base64-encode 
       (z3:encode-buffer
        (with-output-to-string
          (lambda ()(serialize obj))))) ;; BB: serialize - this is
					;; what causes problems
					;; between different builds of
					;; megatest communicating.
					;; serialize is sensitive to
					;; binary image of mtest.
      #t))
    ((write)(with-output-to-string (lambda ()(write obj))))
    ((s11n) (with-output-to-string (lambda ()(serialize obj))))
    (else obj))) ;; rpc

(define (string->obj msg #!key (transport 'http))
  (case (serializing-method)
    ((complex)
     (handle-exceptions
      exn
      (begin
        (print "ULEX ERROR: cannot translate received data \""msg"\"")
        (print-call-chain (current-error-port))
        msg)
      (with-input-from-string 
          (z3:decode-buffer
           (base64:base64-decode
            (string-substitute 
             (regexp "_") "=" msg #t)))
        (lambda ()(deserialize)))))
    ((write)(with-input-from-string msg (lambda ()(read))))
    ((s11n)(with-input-from-string msg (lambda ()(deserialize))))
    (else msg))) ;; rpc


;;======================================================================
;; listener
;;======================================================================

;; is uconn a ulex connector (listener)
;;
(define (ulex-listener? uconn)
  (udat? uconn))

;; create a tcp listener and return a populated udat struct with
;; my port, address, hostname, pid etc.
;; return #f if fail to find a port to allocate.
;;
;;  if udata-in is #f create the record
;;  if there is already a serv-listener return the udata
;;
(define (setup-listener uconn #!optional (port 4242))
  (handle-exceptions
   exn
   (if (< port 65535)
       (setup-listener uconn (+ port 1))
       #f)
   (connect-listener uconn port)))

(define (connect-listener uconn port)
  ;; (tcp-listener-socket LISTENER)(socket-name so)
  ;; sockaddr-address, sockaddr-port, sockaddr->string
  (let* ((tlsn (tcp-listen port 1000 #f)) ;; (tcp-listen TCPPORT [BACKLOG [HOST]])
	 (addr (get-my-best-address))) ;; (hostinfo-addresses (host-information (current-hostname)))
    (udat-port-set!      uconn port)
    (udat-host-port-set! uconn (conc addr":"port))
    (udat-socket-set!    uconn tlsn)
    uconn))

;; run-listener does all the work of starting a listener in a thread
;; it then returns control
;;
(define (run-listener handler-proc #!optional (port-suggestion 4242))
  (let* ((uconn (make-udat)))
    (udat-work-proc-set! uconn handler-proc)
    (if (setup-listener uconn port-suggestion)
	(let* ((orig-in  (current-input-port))
	       (orig-out (current-output-port)))
	  ((make-tcp-server
	    (udat-socket uconn)
	    (lambda ()
	      (let* ((rdat
		      (string->obj (read))
		      ;; (read in)
		      ;; (deserialize)
		      ) 
		     (resp (let ((tcp-in  (current-input-port))
				 (tcp-out (current-output-port)))
			     (current-input-port orig-in)
			     (current-output-port orig-out)
			     (let ((res (do-work uconn rdat)))
			       (current-input-port tcp-in)
			       (current-output-port tcp-out)
			       res))))
		(write (obj->string resp))
		;; (serialize resp)
		;; (write resp out)
		)))))
	(assert #f "ERROR: run-listener called without proper setup."))))

(define (wait-and-close uconn)
  (thread-join! (udat-cmd-thread uconn))
  (tcp-close (udat-socket uconn)))

;;========================================================================
;; peers and connections
;;========================================================================

(define *send-mutex* (make-mutex))

;; send structured data to recipient
;;
;;  NOTE: qrykey is what was called the "cookie" previously
;;
;;     retval tells send to expect and wait for return data (one line) and return it or time out
;;       this is for ping where we don't want to necessarily have set up our own server yet.
;;
(define (send-receive udata host-port cmd params)
  (let* ((host-port-lst (string-split host-port ":"))
	 (host          (car host-port-lst))
	 (port          (string->number (cadr host-port-lst)))
	 (my-host-port (and udata (udat-host-port udata)))          ;; remote will return to this
	 (isme         (equal? host-port my-host-port)) ;; calling myself?
	 ;; dat is a self-contained work block that can be sent or handled locally
	 (dat          (list `(host-port . ,my-host-port)
			     `(qrykey . qrykey)
			     `(cmd . ,cmd)
			     `(params . ,params))))
    (cond
     (isme (do-work udata dat)) ;; no transmission needed
     (else
      (handle-exceptions ;; TODO - MAKE THIS EXCEPTION CMD SPECIFIC?
       exn
       (begin
         (print "ULEX send-receive: "cmd", "params", exn="exn)
         (message exn))
       (begin
	 ;; (mutex-lock! *send-mutex*) ;; DOESN'T SEEM TO HELP
	 (let-values (((inp oup)(tcp-connect host port)))
	   (let ((res (if (and inp oup)
			  (begin
			    (write (obj->string dat) oup)
			    (close-output-port oup)
			    (string->obj (read inp)))
			  (begin
			    (print "ERROR: send called but no receiver has been setup. Please call setup first!")
			    #f))))
	     (close-input-port inp)
	     ;; (mutex-unlock! *send-mutex*) ;; DOESN'T SEEM TO HELP
	     res)))))))) ;; res will always be 'ack unless return-method is direct

;;======================================================================
;; work queues - this is all happening on the listener side
;;======================================================================

;; move the logic to return the result somewhere else?
;;
(define (do-work uconn rdat)
  ;; put this following into a do-work procedure
  (match rdat
     ((rem-host-port qrykey cmd params)
      (case cmd
	((ping) 'ping-ack) ;; bypass calling the proc
	(else
	 (let* ((proc       (udat-work-proc uconn))
		(start-time (current-milliseconds))
		(result     (with-output-to-port (current-error-port)
			      (lambda ()
				(proc rem-host-port qrykey cmd params))))
		(end-time   (current-milliseconds))
		(run-time   (- end-time start-time)))
	   result))))
     (else
      (print "ERROR: rdat "rdat", did not match rem-host-port qrykey cmd params"))))

;;======================================================================
;; misc utils
;;======================================================================

(define (pp-uconn uconn)
  (pp (udat->alist uconn)))

;;======================================================================
;; network utilities
;;======================================================================

;; NOTE: Look at address-info egg as alternative to some of this

(define (rate-ip ipaddr)
  (regex-case ipaddr
    ( "^127\\..*" _ 0 )
    ( "^(10\\.0|192\\.168)\\..*" _ 1 )
    ( else 2 ) ))

;; Change this to bias for addresses with a reasonable broadcast value?
;;
(define (ip-pref-less? a b)
  (> (rate-ip a) (rate-ip b)))

(define (get-my-best-address)
  (let ((all-my-addresses (get-all-ips)))
    (cond
     ((null? all-my-addresses)
      (get-host-name))                                          ;; no interfaces?
     ((eq? (length all-my-addresses) 1)
      (car all-my-addresses))                      ;; only one to choose from, just go with it
     (else
      (car (sort all-my-addresses ip-pref-less?))))))

(define (get-all-ips-sorted)
  (sort (get-all-ips) ip-pref-less?))

(define (get-all-ips)
  (map address-info-host
       (filter (lambda (x)
		 (equal? (address-info-type x) "tcp"))
	       (address-infos (get-host-name)))))

)

Added ulex-full/dbmgr.scm version [afcee6ee9f].























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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;;======================================================================
;; Copyright 2022, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(declare (unit dbmgrmod))

(declare (uses ulex))
(declare (uses apimod))
(declare (uses pkts))
(declare (uses commonmod))
(declare (uses dbmod))
(declare (uses mtargs))
(declare (uses portloggermod))
(declare (uses debugprint))

(module dbmgrmod
    *

(import scheme
	chicken.base
	chicken.condition
	chicken.file
	chicken.format
	chicken.port
	chicken.process
	chicken.process-context
	chicken.process-context.posix
	chicken.sort
	chicken.string
	chicken.time
	
	(prefix sqlite3 sqlite3:)
	matchable
	md5
	message-digest
	regex
	s11n
	srfi-1
	srfi-18
	srfi-69
	system-information
	typed-records
	
	pkts
	ulex

	commonmod
	apimod
	dbmod
	debugprint
	(prefix mtargs args:)
	portloggermod
	)

;; Configurations for server
;; (tcp-buffer-size 2048)
;; (max-connections 2048) 

;; info about me as a listener and my connections to db servers
;; stored (for now) in *db-serv-info*
;;
(defstruct servdat
  (host #f)
  (port #f)
  (uuid #f)
  (dbfile #f)
  (uconn   #f) ;; this is the listener *FOR THIS PROCESS*
  (mode    #f)
  (status 'starting)
  (trynum 0) ;; count the number of ports we've tried
  (conns  (make-hash-table)) ;; apath/dbname => conndat
  ) 

(define *db-serv-info* (make-servdat))

(define (servdat->url sdat)
  (conc (servdat-host sdat)":"(servdat-port sdat)))

;; db servers contact info
;;
(defstruct conndat
  (apath    #f)
  (dbname   #f)
  (fullname #f)
  (hostport #f)
  (ipaddr   #f)
  (port     #f)
  (srvpkt   #f)
  (srvkey   #f)
  (lastmsg  0)
  (expires  0))

(define *srvpktspec*
  `((server (host    . h)
	    (port    . p)
	    (servkey . k)
	    (pid     . i)
	    (ipaddr  . a)
	    (dbpath  . d))))

;;======================================================================
;;  S U P P O R T   F U N C T I O N S
;;======================================================================

;; set up the api proc, seems like there should be a better place for this?
;;
;; IS THIS NEEDED ANYMORE? TODO - REMOVE IF POSSIBLE
;;
;; (define api-proc (make-parameter conc))
;; (api-proc api:execute-requests)

;; do we have a connection to apath dbname and
;; is it not expired? then return it
;;
;; else setup a connection
;;
;; if that fails, return '(#f "some reason") ;; NB// convert to raising an exception
;;
(define (rmt:get-conn remdat apath dbname)
  (let* ((fullname (db:dbname->path apath dbname)))
    (hash-table-ref/default (servdat-conns remdat) fullname #f)))

(define (rmt:drop-conn remdat apath dbname)
  (let* ((fullname (db:dbname->path apath dbname)))
    (hash-table-delete! (servdat-conns remdat) fullname)))
  
(define (rmt:find-main-server uconn apath dbname)
  (let* ((pktsdir     (get-pkts-dir apath))
	 (all-srvpkts (get-all-server-pkts pktsdir *srvpktspec*))
	 (viable-srvs (get-viable-servers all-srvpkts dbname)))
    (get-the-server uconn apath viable-srvs)))


(define *connstart-mutex* (make-mutex))
(define *last-main-start* 0)

;; looks for a connection to main, returns if have and not exired
;; creates new otherwise
;; 
;; connections for other servers happens by requesting from main
;;
;; TODO: This is unnecessarily re-creating the record in the hash table
;;
(define (rmt:open-main-connection remdat apath)
  (let* ((fullpath (db:dbname->path apath ".db/main.db"))
	 (conns    (servdat-conns remdat))
	 (conn     (rmt:get-conn remdat apath ".db/main.db")) ;; (hash-table-ref/default conns fullpath #f)) ;; TODO - create call for this
	 (start-rmt:run (lambda ()
			  (let* ((th1 (make-thread (lambda ()(rmt:run (get-host-name))) "non-db mode server")))
			    (thread-start! th1)
			    (thread-sleep! 1)
			    (let loop ((count 0))
			      (assert (< count 30) "FATAL: responder failed to initialize in rmt:open-main-connection")
			      (if (or (not *db-serv-info*)
				      (not (servdat-uconn *db-serv-info*)))
				  (begin
				    (thread-sleep! 1)
				    (loop (+ count 1)))
				  (begin
				    (servdat-mode-set! *db-serv-info* 'non-db)
				    (servdat-uconn *db-serv-info*)))))))
	 (myconn    (servdat-uconn *db-serv-info*)))
    (cond
     ((not myconn)
      (start-rmt:run)
      (rmt:open-main-connection remdat apath))
     ((and conn                                             ;; conn is NOT a socket, just saying ...
	   (< (current-seconds) (conndat-expires conn)))
      #t) ;; we are current and good to go - we'll deal elsewhere with a server that was killed or died 
     ((and conn
	   (>= (current-seconds)(conndat-expires conn)))
      (debug:print-info 0 *default-log-port* "connection to "fullpath" server expired. Reconnecting.")
      (rmt:drop-conn remdat apath ".db/main.db") ;;
      (rmt:open-main-connection remdat apath))
     (else
      ;; Below we will find or create and connect to main
      (debug:print-info 0 *default-log-port* "rmt:open-main-connection - starting from scratch")
      (let* ((dbname         (db:run-id->dbname #f))
	     (the-srv        (rmt:find-main-server myconn apath dbname))
	     (start-main-srv (lambda () ;; call IF there is no the-srv found
			       (mutex-lock! *connstart-mutex*)
			       (if (> (- (current-seconds) *last-main-start*) 5) ;; at least four seconds since last attempt to start main server
				   (begin
				     (api:run-server-process apath dbname)
				     (set! *last-main-start* (current-seconds))
				     (thread-sleep! 1))
				   (thread-sleep! 0.25))
			       (mutex-unlock! *connstart-mutex*)
			       (rmt:open-main-connection remdat apath) ;; TODO: Add limit to number of tries
			       )))
	(if (not the-srv) ;; have server, try connecting to it
	    (start-main-srv)
	    (let* ((srv-addr (server-address the-srv)) ;; need serv
		   (ipaddr   (alist-ref 'ipaddr  the-srv))
		   (port     (alist-ref 'port    the-srv))
		   (srvkey   (alist-ref 'servkey the-srv))
		   (fullpath (db:dbname->path apath dbname))
		   
		   (new-the-srv (make-conndat
				 apath:   apath
				 dbname:  dbname
				 fullname: fullpath
				 hostport: srv-addr
				 ;; socket: (open-nn-connection srv-addr)  - TODO - open ulex connection?
				 ipaddr: ipaddr
				 port: port
				 srvpkt: the-srv
				 srvkey: srvkey ;; generated by rmt:get-signature on the server side
				 lastmsg: (current-seconds)
				 expires: (+ (current-seconds)
					     (server:expiration-timeout)
					     -2) ;; this needs to be gathered during the ping
				 )))
	      (hash-table-set! conns fullpath new-the-srv)))
	#t)))))

;; NB// sinfo is a servdat struct
;;
(define (rmt:general-open-connection sinfo apath dbname #!key (num-tries 5))
  (assert (not (equal? dbname ".db/main.db")) "ERROR: general-open-connection should never be called with main as the db")
  (let* ((mdbname  ".db/main.db") ;; (db:run-id->dbname #f)) TODO: put this back to the lookup when stable
	 (fullname (db:dbname->path apath dbname))
	 (conns    (servdat-conns sinfo))
	 (mconn    (rmt:get-conn sinfo apath ".db/main.db"))
	 (dconn    (rmt:get-conn sinfo apath dbname)))
    #;(if (and mconn
	     (not (debug:print-logger)))
	(begin
	  (debug:print-info 0 *default-log-port* "Turning on logging to main, look in logs dir for main log.")
	  (debug:print-logger rmt:log-to-main)))
    (cond
     ((and mconn
	   dconn
	   (< (current-seconds)(conndat-expires dconn)))
      #t) ;; good to go
     ((not mconn) ;; no channel open to main? open it...
      (rmt:open-main-connection sinfo apath)
      (rmt:general-open-connection sinfo apath dbname num-tries: (- num-tries 1)))
     ((not dconn)                 ;; no channel open to dbname?     
      (let* ((res (rmt:send-receive-real sinfo apath mdbname 'get-server `(,apath ,dbname))))
	(case res
	  ((server-started)
	   (if (> num-tries 0)
	       (begin
		 (thread-sleep! 2)
		 (rmt:general-open-connection sinfo apath dbname num-tries: (- num-tries 1)))
	       (begin
		 (debug:print-error 0 *default-log-port* "Failed to start servers needed or open channel to "apath", "dbname)
		 (exit 1))))
	  (else
	   (if (list? res) ;; server has been registered and the info was returned. pass it on.
	       (begin ;;  ("192.168.0.9" 53817
		      ;;  "5e34239f48e8973b3813221e54701a01" "24310"
		      ;;  "192.168.0.9"
		      ;;  "/home/matt/data/megatest/tests/simplerun"
		 ;;  ".db/1.db")
		 (match
		  res
		  ((host port servkey pid ipaddr apath dbname)
		   (debug:print-info 0 *default-log-port* "got "res)
		   (hash-table-set! conns
				    fullname
				    (make-conndat
				     apath: apath
				     dbname: dbname
				     hostport: (conc host":"port)
				     ;; socket: (open-nn-connection (conc host":"port)) ;; TODO - open ulex connection?
				     ipaddr: ipaddr
				     port: port
				     srvkey: servkey
				     lastmsg: (current-seconds)
				     expires: (+ (current-seconds)
						 (server:expiration-timeout)
						 -2))))
		  (else
		   (debug:print-info 0 *default-log-port* "return data from starting server did not match host port servkey pid ipaddr apath dbname " res)))
		 res)
	       (begin
		 (debug:print-info 0 *default-log-port* "Unexpected result: " res)
		 res)))))))
    #t))

;;======================================================================

;; FOR DEBUGGING SET TO #t
;; (define *localmode* #t)
(define *localmode* #f)
(define *dbstruct* (make-dbr:dbstruct))

;; Defaults to current area
;;
(define (rmt:send-receive cmd rid params #!key (attemptnum 1)(area-dat #f))
  (let* ((apath      *toppath*)
	 (sinfo      *db-serv-info*)
	 (dbname     (db:run-id->dbname rid)))
    (if *localmode*
	(api:execute-requests *dbstruct* cmd params)
	(begin
	  (rmt:open-main-connection sinfo apath)
	  (if rid (rmt:general-open-connection sinfo apath dbname))
	  #;(if (not (member cmd '(log-to-main)))
	      (debug:print-info 0 *default-log-port* "rmt:send-receive "cmd" params="params))
	  (rmt:send-receive-real sinfo apath dbname cmd params)))))

;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; sometime in the future
;;
(define (rmt:send-receive-real sinfo apath dbname cmd params)
  (assert (not (eq? 'primordial (thread-name (current-thread)))) "FATAL: Do not call rmt:send-receive-real in the primodial thread.")
  (let* ((cdat (rmt:get-conn sinfo apath dbname)))
    (assert cdat "FATAL: rmt:send-receive-real called without the needed channels opened")
    (let* ((uconn    (servdat-uconn sinfo)) ;; get the interface to ulex
	   ;; then send-receive using the ulex layer to host-port stored in cdat
	   (res      (send-receive uconn (conndat-hostport cdat) cmd params))
	   #;(th1      (make-thread (lambda ()
				    (set! res (send-receive uconn (conndat-hostport cdat) cmd params)))
				  "send-receive thread")))
      ;; (thread-start! th1)
      ;; (thread-join! th1)   ;; gratuitious thread stuff is so that mailbox is not used in primordial thead
      ;; since we accessed the server we can bump the expires time up
      (conndat-expires-set! cdat (+ (current-seconds)
				    (server:expiration-timeout)
				    -10)) ;; ten second margin for network time misalignments etc.
      res)))

;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; sometime in the future.
;;
;; Purpose - call the main.db server and request a server be started
;; for the given area path and dbname
;;

(define (rmt:print-db-stats)
  (let ((fmtstr "~40a~7-d~9-d~20,2-f")) ;; "~20,2-f"
    (debug:print 18 *default-log-port* "DB Stats, "(seconds->year-week/day-time (current-seconds))"\n=====================")
    (debug:print 18 *default-log-port* (format #f "~40a~8a~10a~10a" "Cmd" "Count" "TotTime" "Avg"))
    (for-each (lambda (cmd)
		(let ((cmd-dat (hash-table-ref *db-stats* cmd)))
		  (debug:print 18 *default-log-port* (format #f fmtstr cmd (vector-ref cmd-dat 0) (vector-ref cmd-dat 1) (/ (vector-ref cmd-dat 1)(vector-ref cmd-dat 0))))))
	      (sort (hash-table-keys *db-stats*)
		    (lambda (a b)
		      (> (vector-ref (hash-table-ref *db-stats* a) 0)
			 (vector-ref (hash-table-ref *db-stats* b) 0)))))))

(define (rmt:get-max-query-average run-id)
  (mutex-lock! *db-stats-mutex*)
  (let* ((runkey (conc "run-id=" run-id " "))
	 (cmds   (filter (lambda (x)
			   (substring-index runkey x))
			 (hash-table-keys *db-stats*)))
	 (res    (if (null? cmds)
		     (cons 'none 0)
		     (let loop ((cmd (car cmds))
				(tal (cdr cmds))
				(max-cmd (car cmds))
				(res 0))
		       (let* ((cmd-dat (hash-table-ref *db-stats* cmd))
			      (tot     (vector-ref cmd-dat 0))
			      (curravg (/ (vector-ref cmd-dat 1) (vector-ref cmd-dat 0))) ;; count is never zero by construction
			      (currmax (max res curravg))
			      (newmax-cmd (if (> curravg res) cmd max-cmd)))
			 (if (null? tal)
			     (if (> tot 10)
				 (cons newmax-cmd currmax)
				 (cons 'none 0))
			     (loop (car tal)(cdr tal) newmax-cmd currmax)))))))
    (mutex-unlock! *db-stats-mutex*)
    res))

;; host and port are used to ensure we are remove proper records
(define (rmt:server-shutdown host port)
  (let ((dbfile   (servdat-dbfile *db-serv-info*)))
    (debug:print-info 0 *default-log-port* "dbfile is "dbfile)
    (if dbfile
	(let* ((am-server  (args:get-arg "-server"))
	       (dbfile     (args:get-arg "-db"))
	       (apath      *toppath*)
	       #;(sinfo     *remotedat*)) ;; foundation for future fix
	  (if *dbstruct-db*
	      (let* ((dbdat      (db:get-dbdat *dbstruct-db* apath dbfile))
		     (db         (dbr:dbdat-db dbdat))
		     (inmem      (dbr:dbdat-db dbdat))   ;; WRONG
		     )
		;; do a final sync here
		(debug:print-info 0 *default-log-port* "Doing final sync for "apath" "dbfile" at "(current-seconds))
		(db:sync-inmem->disk *dbstruct-db* apath dbfile force-sync: #t)
		;; let's finalize here
		(debug:print-info 0 *default-log-port* "Finalizing db and inmem")
		(if (sqlite3:database? db)
		    (sqlite3:finalize! db)
		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, db is not a database, not finalizing..."))
		(if (sqlite3:database? inmem)
		    (sqlite3:finalize! inmem)
		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, inmem is not a database, not finalizing..."))
		(debug:print-info 0 *default-log-port* "Finalizing db and inmem complete"))
	      (debug:print-info 0 *default-log-port* "Db was never opened, no cleanup to do."))
	  (if (not am-server)
	      (debug:print-info 0 *default-log-port* "I am not a server, should NOT get here!")
	      (if (string-match ".*/main.db$" dbfile)
		  (let ((pkt-file (conc (get-pkts-dir *toppath*)
					"/" (servdat-uuid *db-serv-info*)
					".pkt")))
		    (debug:print-info 0 *default-log-port* "removing pkt "pkt-file)
		    (delete-file* pkt-file)
		    (debug:print-info 0 *default-log-port* "Releasing lock (if any) for "dbfile ", host "host", port "port)
		    (db:with-lock-db
		     (servdat-dbfile *db-serv-info*)
		     (lambda (dbh dbfile)
		       (db:release-lock dbh dbfile host port)))) ;; I'm not the server - should not have a lock to remove
		  (let* ((sdat *db-serv-info*) ;; we have a run-id server
			 (host (servdat-host sdat))
			 (port (servdat-port sdat))
			 (uuid (servdat-uuid sdat))
			 (res  (rmt:deregister-server *db-serv-info* *toppath* host port uuid dbfile)))
		    (debug:print-info 0 *default-log-port* "deregistered-server, res="res)
		    (debug:print-info 0 *default-log-port* "deregistering server "host":"port" with uuid "uuid)
		    )))))))


(define (common:run-sync?)
    ;; (and (common:on-homehost?)
  (args:get-arg "-server"))

(define *rmt:run-mutex* (make-mutex))
(define *rmt:run-flag* #f)

;; Main entry point to start a server. was start-server
(define (rmt:run hostn)
  (mutex-lock! *rmt:run-mutex*)
  (if *rmt:run-flag*
      (begin
	(debug:print-warn 0 *default-log-port* "rmt:run already running.")
	(mutex-unlock! *rmt:run-mutex*))
      (begin
	(set! *rmt:run-flag* #t)
	(mutex-unlock! *rmt:run-mutex*)
	;;  ;; Configurations for server
	;;  (tcp-buffer-size 2048)
	;;  (max-connections 2048) 
	(debug:print 2 *default-log-port* "PID: "(current-process-id)". Attempting to start the server ...")
	(if (and *db-serv-info*
		 (servdat-uconn *db-serv-info*))
	    (let* ((uconn (servdat-uconn *db-serv-info*)))
	      (wait-and-close uconn))
	    (let* ((port            (portlogger:open-run-close portlogger:find-port))
		   (handler-proc    (lambda (rem-host-port qrykey cmd params) ;;
				      (set! *db-last-access* (current-seconds))
				      (assert (list? params) "FATAL: handler called with non-list params")
				      (assert (args:get-arg "-server") "FATAL: handler called on non-server side. cmd="cmd", params="params)
				      (debug:print 0 *default-log-port* "handler call: "cmd", params="params)
				      (api:execute-requests *dbstruct-db* cmd params))))
	      ;; (api:process-request *dbstuct-db* 
	      (if (not *db-serv-info*)
		  (set! *db-serv-info* (make-servdat host: hostn port: port)))
	      (let* ((uconn (run-listener handler-proc port))
		     (rport (udat-port uconn))) ;; the real port
		(servdat-host-set! *db-serv-info* hostn)
		(servdat-port-set! *db-serv-info* rport)
		(servdat-uconn-set! *db-serv-info* uconn)
		(wait-and-close uconn)
		(db:print-current-query-stats)
		)))
	(let* ((host (servdat-host *db-serv-info*))
	       (port (servdat-port *db-serv-info*))
	       (mode (or (servdat-mode *db-serv-info*)
			 "non-db")))
	  ;; server exit stuff here
	  ;; (rmt:server-shutdown host port) - always do in on-exit
	  ;; (portlogger:open-run-close portlogger:set-port port "released") ;; moved to on-exit 
	  (debug:print-info 0 *default-log-port* "Server "host":"port" mode "mode"shutdown complete. Exiting")
	  ))))

;;======================================================================
;; S E R V E R   U T I L I T I E S 
;;======================================================================


;;======================================================================
;; NEW SERVER METHOD
;;======================================================================

;; only use for main.db - need to re-write some of this :(
;;
(define (get-lock-db sdat dbfile host port)
  (assert host "FATAL: get-lock-db called with host not set.")
  (assert port "FATAL: get-lock-db called with port not set.")
  (let* ((dbh (db:open-run-db dbfile db:initialize-db)) ;; open-run-db creates a standard db with schema used by all situations
	 (res (db:get-iam-server-lock dbh dbfile host port))
	 (uconn (servdat-uconn sdat)))
    ;; res => list then already locked, check server is responsive
    ;;     => #t then sucessfully got the lock
    ;;     => #f reserved for future use as to indicate something went wrong
    (match res
      ((owner_pid owner_host owner_port event_time)
       (if (server-ready? uconn (conc owner_host":"owner_port) "abc")
	   #f      ;; locked by someone else
	   (begin  ;; locked by someone dead and gone
	     (debug:print 0 *default-log-port* "WARNING: stale lock - have to steal it. This may fail.")
	     (db:steal-lock-db dbh dbfile port))))
      (#t  #t) ;; placeholder so that we don't touch res if it is #t
      (else (set! res #f)))
    (sqlite3:finalize! dbh)
    res))


(define (register-server pkts-dir pkt-spec host port servkey ipaddr dbpath)
  (let* ((pkt-dat `((host    . ,host)
		    (port    . ,port)
		    (servkey . ,servkey)
		    (pid     . ,(current-process-id))
		    (ipaddr  . ,ipaddr)
		    (dbpath  . ,dbpath)))
	 (uuid    (write-alist->pkt
		   pkts-dir
		   pkt-dat
		   pktspec: pkt-spec
		   ptype: 'server)))
    (debug:print 0 *default-log-port* "Server on "host":"port" registered in pkt "uuid)
    uuid))

(define (get-pkts-dir #!optional (apath #f))
  (let* ((effective-toppath (or *toppath* apath)))
    (assert effective-toppath
	    "ERROR: get-pkts-dir called without *toppath* set. Exiting.")
    (let* ((pdir (conc effective-toppath "/.meta/srvpkts")))
      (if (file-exists? pdir)
	  pdir
	  (begin
	    (handle-exceptions ;; this exception handler should NOT be needed but ...
		exn
		pdir
	      (create-directory pdir #t))
	    pdir)))))

;; given a pkts dir read 
;;
(define (get-all-server-pkts pktsdir-in pktspec)
  (let* ((pktsdir  (if (file-exists? pktsdir-in)
		       pktsdir-in
		       (begin
			 (create-directory pktsdir-in #t)
			 pktsdir-in)))
	 (all-pkt-files (glob (conc pktsdir "/*.pkt"))))
    (map (lambda (pkt-file)
	   (read-pkt->alist pkt-file pktspec: pktspec))
	 all-pkt-files)))

(define (server-address srv-pkt)
  (conc (alist-ref 'host srv-pkt) ":"
	(alist-ref 'port srv-pkt)))
	
(define (server-ready? uconn host-port key) ;; server-address is host:port
  (let* ((params `((cmd . ping)(key . ,key)))
	 (data `((cmd . ping)
		 (key . ,key)
		 (params . ,params))) ;; I don't get it.
	 (res  (send-receive uconn host-port 'ping data)))
    (if (eq? res 'ack) ;; yep, likely it is who we want on the other end
	res
	#f)))
;; (begin (debug:print-info 0 *default-log-port* "server-ready? => "res) #f))))

; from the pkts return servers associated with dbpath
;; NOTE: Only one can be alive - have to check on each
;;       in the list of pkts returned
;;
(define (get-viable-servers serv-pkts dbpath)
  (let loop ((tail serv-pkts)
	     (res  '()))
    (if (null? tail)
	res ;; NOTE: sort by age so oldest is considered first
	(let* ((spkt (car tail)))
	  (loop (cdr tail)
		(if (equal? dbpath (alist-ref 'dbpath spkt))
		    (cons spkt res)
		    res))))))

(define (remove-pkts-if-not-alive uconn serv-pkts)
  (filter (lambda (pkt)
	    (let* ((host (alist-ref 'host pkt))
		   (port (alist-ref 'port pkt))
		   (host-port (conc host":"port))
		   (key  (alist-ref 'servkey  pkt))
		   (pktz (alist-ref 'Z        pkt))
		   (res  (server-ready? uconn host-port key)))
	      (if res
		  res
		  (let* ((pktsdir (get-pkts-dir *toppath*))
			 (pktpath (conc pktsdir"/"pktz".pkt")))
		    (debug:print 0 *default-log-port* "WARNING: pkt with no server "pktpath)
		    (delete-file* pktpath)
		    #f))))
	  serv-pkts))

;; from viable servers get one that is alive and ready
;;
(define (get-the-server uconn apath serv-pkts)
  (let loop ((tail serv-pkts))
    (if (null? tail)
	#f
	(let* ((spkt  (car tail))
	       (host  (alist-ref 'ipaddr spkt))
	       (port  (alist-ref 'port spkt))
	       (host-port (conc host":"port))
	       (dbpth (alist-ref 'dbpath spkt))
	       (srvkey (alist-ref 'Z spkt)) ;; (alist-ref 'srvkey spkt))
	       (addr  (server-address spkt)))
	  (if (server-ready? uconn host-port srvkey)
	      spkt
	      (loop (cdr tail)))))))

;; am I the "first" in line server? I.e. my D card is smallest
;; use Z card as tie breaker
;;
(define (get-best-candidate serv-pkts dbpath)
  (if (null? serv-pkts)
      #f
      (let loop ((tail serv-pkts)
		 (best  (car serv-pkts)))
	(if (null? tail)
	    best
	    (let* ((candidate (car tail))
		   (candidate-bd (string->number (alist-ref 'D candidate)))
		   (best-bd      (string->number (alist-ref 'D best)))
		   ;; bigger number is younger
		   (candidate-z  (alist-ref 'Z candidate))
		   (best-z       (alist-ref 'Z best))
		   (new-best     (cond
				  ((> best-bd candidate-bd) ;; best is younger than candidate
				   candidate)
				  ((< best-bd candidate-bd) ;; candidate is younger than best
				   best)
				  (else
				   (if (string>=? best-z candidate-z)
				       best
				       candidate))))) ;; use Z card as tie breaker
	      (if (null? tail)
		  new-best
		  (loop (cdr tail) new-best)))))))
	  

;;======================================================================
;; END NEW SERVER METHOD
;;======================================================================

;; if .db/main.db check the pkts
;; 
(define (rmt:wait-for-server pkts-dir db-file server-key)
  (let* ((sdat *db-serv-info*))
    (let loop ((start-time (current-seconds))
	       (changed    #t)
	       (last-sdat  "not this"))
      (begin ;; let ((sdat #f))
	(thread-sleep! 0.01)
	(debug:print-info 0 *default-log-port* "Waiting for server alive signature")
	(mutex-lock! *heartbeat-mutex*)
	(set! sdat *db-serv-info*)
	(mutex-unlock! *heartbeat-mutex*)
	(if (and sdat
		 (not changed)
		 (> (- (current-seconds) start-time) 2))
	    (let* ((uconn (servdat-uconn sdat)))
	      (servdat-status-set! sdat 'iface-stable)
	      (debug:print-info 0 *default-log-port* "Received server alive signature, now attempting to lock in server")
	      ;; create a server pkt in *toppath*/.meta/srvpkts
	      
	      ;; TODO:
	      ;;   1. change sdat to stuct
	      ;;   2. add uuid to struct
	      ;;   3. update uuid in sdat here
	      ;;
	      (servdat-uuid-set! sdat
				 (register-server
				  pkts-dir *srvpktspec*
				  (get-host-name)
				  (servdat-port sdat) server-key
				  (servdat-host sdat) db-file))
	      ;; (set! *my-signature* (servdat-uuid sdat)) ;; replace with Z, no, stick with proper key
	      ;; now read pkts and see if we are a contender
	      (let* ((all-pkts     (get-all-server-pkts pkts-dir *srvpktspec*))
		     (viables      (get-viable-servers all-pkts db-file))
		     (alive        (remove-pkts-if-not-alive uconn viables))
		     (best-srv     (get-best-candidate alive db-file))
		     (best-srv-key (if best-srv (alist-ref 'servkey best-srv) #f))
		     (i-am-srv     (equal? best-srv-key server-key))
		     (delete-pkt   (lambda ()
				     (let* ((pktfile (conc (get-pkts-dir *toppath*)
							 "/" (servdat-uuid *db-serv-info*)
							 ".pkt")))
				       (debug:print-info 0 *default-log-port* "Attempting to remove bogus pkt file "pktfile)
				       (delete-file* pktfile))))) ;; remove immediately instead of waiting for on-exit
		(debug:print 0 *default-log-port* "best-srv-key: "best-srv-key", server-key: "server-key", i-am-srv: "i-am-srv)
		;; am I the best-srv, compare server-keys to know
		(if i-am-srv
		    (if (get-lock-db sdat db-file (servdat-host sdat)(servdat-port sdat)) ;; (db:get-iam-server-lock *dbstruct-db* *toppath* run-id)
			(begin
			  (debug:print-info 0 *default-log-port* "I'm the server!")
			  (servdat-dbfile-set! sdat db-file)
			  (servdat-status-set! sdat 'db-locked))
			(begin
			  (debug:print-info 0 *default-log-port* "I'm not the server, exiting.")
			  (bdat-time-to-exit-set! *bdat* #t)
			  (delete-pkt)
			  (thread-sleep! 0.2)
			  (exit)))
		    (begin
		      (debug:print-info 0 *default-log-port*
				   "Keys do not match "best-srv-key", "server-key", exiting.")
		      (bdat-time-to-exit-set! *bdat* #t)
		      (delete-pkt)
		      (thread-sleep! 0.2)
		      (exit)))
		sdat))
	    (begin ;; sdat not yet contains server info
	      (debug:print-info 0 *default-log-port* "Still waiting, last-sdat=" last-sdat)
	      (sleep 4)
	      (if (> (- (current-seconds) start-time) 120) ;; been waiting for two minutes
		  (begin
		    (debug:print-error 0 *default-log-port* "transport appears to have died, exiting server")
		    (exit))
		  (loop start-time
			(equal? sdat last-sdat)
			sdat))))))))

(define (rmt:register-server sinfo apath iface port server-key dbname)
  (servdat-conns sinfo) ;; just checking types
  (rmt:open-main-connection sinfo apath) ;; we need a channel to main.db
  (rmt:send-receive-real sinfo apath      ;; params: host port servkey pid ipaddr dbpath
			 (db:run-id->dbname #f)
			 'register-server `(,iface
					    ,port
					    ,server-key
					    ,(current-process-id)
					    ,iface
					    ,apath
					    ,dbname)))

(define (rmt:get-count-servers sinfo apath)
  (servdat-conns sinfo) ;; just checking types
  (rmt:open-main-connection sinfo apath) ;; we need a channel to main.db
  (rmt:send-receive-real sinfo apath      ;; params: host port servkey pid ipaddr dbpath
			 (db:run-id->dbname #f)
			 'get-count-servers `(,apath)))

(define (rmt:get-servers-info apath)
  (rmt:send-receive 'get-servers-info #f `(,apath)))

(define (rmt:deregister-server db-serv-info apath iface port server-key dbname)
  (rmt:open-main-connection db-serv-info apath) ;; we need a channel to main.db
  (rmt:send-receive-real db-serv-info apath      ;; params: host port servkey pid ipaddr dbpath
                         (db:run-id->dbname #f)
                         'deregister-server `(,iface
                                              ,port
                                              ,server-key
                                              ,(current-process-id)
                                              ,iface
                                              ,apath
                                              ,dbname)))

(define (rmt:wait-for-stable-interface #!optional (num-tries-allowed 100))
  ;; wait until *db-serv-info* stops changing
  (let* ((stime (current-seconds)))
    (let loop ((last-host  #f)
	       (last-port  #f)
	       (tries 0))
      (let* ((curr-host (and *db-serv-info* (servdat-host *db-serv-info*)))
	     (curr-port (and *db-serv-info* (servdat-port *db-serv-info*))))
	;; first we verify port and interface, update *db-serv-info* in need be.
	(cond
	 ((> tries num-tries-allowed)
	  (debug:print 0 *default-log-port* "rmt:keep-running, giving up after trying for several minutes.")
	  (exit 1))
	 ((not *db-serv-info*)
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((or (not last-host)(not last-port))
	  (debug:print 0 *default-log-port* "rmt:keep-running, still no interface, tries="tries)
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((or (not (equal? last-host curr-host))
	      (not (equal? last-port curr-port)))
	  (debug:print-info 0 *default-log-port* "WARNING: interface changed, refreshing iface and port info")
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((< (- (current-seconds) stime) 1) ;; keep up the looping until at least 3 seconds have passed
	  (thread-sleep! 0.5)
	  (loop curr-host curr-port (+ tries 1)))
	 (else
	  (rmt:get-signature) ;; sets *my-signature* as side effect
	  (servdat-status-set! *db-serv-info* 'interface-stable)
	  (debug:print 0 *default-log-port*
		       "SERVER STARTED: " curr-host
		       ":" curr-port
		       " AT " (current-seconds) " server signature: " *my-signature*
		       " with "(servdat-trynum *db-serv-info*)" port changes")
	  (flush-output *default-log-port*)
	  #t))))))

;; run rmt:keep-running in a parallel thread to monitor that the db is being 
;; used and to shutdown after sometime if it is not.
;;
(define (rmt:keep-running dbname) 
  ;; if none running or if > 20 seconds since 
  ;; server last used then start shutdown
  ;; This thread waits for the server to come alive
  (debug:print-info 0 *default-log-port* "Starting the sync-back, keep alive thread in server")

  (let* ((sinfo             *db-serv-info*)
	 (server-start-time (current-seconds))
	 (pkts-dir          (get-pkts-dir))
	 (server-key        (rmt:get-signature)) ;; This servers key
	 (is-main           (equal? (args:get-arg "-db") ".db/main.db"))
	 (last-access       0)
	 (server-timeout    (server:expiration-timeout))
	 (shutdown-server-sequence (lambda (host port)
				     (set! *unclean-shutdown* #f) ;; Should not be needed anymore
				     (debug:print-info 0 *default-log-port* "Starting to shutdown the server. pid="(current-process-id))
				     ;; (rmt:server-shutdown host port) -- called in on-exit
				     ;; (portlogger:open-run-close portlogger:set-port port "released") called in on-exit
				     (exit)))
	 (timed-out?        (lambda ()
			      (<= (+ last-access server-timeout)
				  (current-seconds)))))
    (servdat-dbfile-set! *db-serv-info* (args:get-arg "-db"))
    ;; main and run db servers have both got wait logic (could/should merge it)
    (if is-main
	(rmt:wait-for-server pkts-dir dbname server-key)
	(rmt:wait-for-stable-interface))
    ;; this is our forever loop
    (let* ((iface (servdat-host *db-serv-info*))
	   (port  (servdat-port *db-serv-info*))
	   (uconn (servdat-uconn *db-serv-info*)))
      (let loop ((count          0)
		 (bad-sync-count 0)
		 (start-time     (current-milliseconds)))
	(if (and (not is-main)
		 (common:low-noise-print 60 "servdat-status"))
	    (debug:print-info 0 *default-log-port* "servdat-status is " (servdat-status *db-serv-info*)))

	(mutex-lock! *heartbeat-mutex*)
	;; set up the database handle
	(if (not *dbstruct-db*) ;; no db opened yet, open the db and register with main if appropriate
	      (let ((watchdog (bdat-watchdog *bdat*)))
		(debug:print 0 *default-log-port* "SERVER: dbprep")
		(db:setup dbname) ;; sets *dbstruct-db* as side effect
		(servdat-status-set! *db-serv-info* 'db-opened)
		;; IFF I'm not main, call into main and register self
		(if (not is-main)
		    (let ((res (rmt:register-server sinfo
						    *toppath* iface port
						    server-key dbname)))
		      (if res ;; we are the server
			  (servdat-status-set! *db-serv-info* 'have-interface-and-db)
			  ;; now check that the db locker is alive, clear it out if not
			  (let* ((serv-info (rmt:server-info *toppath* dbname)))
			    (match serv-info
				   ((host port servkey pid ipaddr apath dbpath)
				    (if (not (server-ready? uconn (conc host":"port) servkey))
					(begin
					  (debug:print-info 0 *default-log-port* "Server registered but not alive. Removing and trying again.")
					  (rmt:deregister-server sinfo apath host port servkey dbpath) ;; servkey pid ipaddr apath dbpath)
					  (loop (+ count 1) bad-sync-count start-time))))
				   (else
				    (debug:print 0 *default-log-port* "We are not the server for "dbname", exiting. Server info is: "serv-info)
				    (exit)))))))
		(debug:print 0 *default-log-port*
			     "SERVER: running, db "dbname" opened, megatest version: "
			   (common:get-full-version))
	      ;; start the watchdog

	      ;; is this really needed?
	      
	      #;(if watchdog
		  (if (not (member (thread-state watchdog)
				   '(ready running blocked
					   sleeping dead)))
		      (begin
			(debug:print-info 0 *default-log-port* "Starting watchdog thread (in state "(thread-state watchdog)")")
			(thread-start! watchdog))
		      (debug:print-info 0 *default-log-port* "Not starting watchdog thread (in state "(thread-state watchdog)")"))
		  (debug:print 0 *default-log-port* "ERROR: *watchdog* not setup, cannot start it."))
	      #;(loop (+ count 1) bad-sync-count start-time)
	      ))
	
	(db:sync-inmem->disk *dbstruct-db* *toppath* dbname force-sync: #t)
	
	(mutex-unlock! *heartbeat-mutex*)
	
	;; when things go wrong we don't want to be doing the various
	;; queries too often so we strive to run this stuff only every
	;; four seconds or so.
	(let* ((sync-time (- (current-milliseconds) start-time))
	       (rem-time  (quotient (- 4000 sync-time) 1000)))
	  (if (and (<= rem-time 4)
		   (>  rem-time 0))
	      (thread-sleep! rem-time)))
    
	;; Transfer *db-last-access* to last-access to use in checking that we are still alive
	(set! last-access *db-last-access*)
	
	(if (< count 1) ;; 3x3 = 9 secs aprox
	    (loop (+ count 1) bad-sync-count (current-milliseconds)))
	
	(if (common:low-noise-print 60 "dbstats")
	    (begin
	      (debug:print 0 *default-log-port* "Server stats:")
	      (db:print-current-query-stats)))
	(let* ((hrs-since-start  (/ (- (current-seconds) server-start-time) 3600)))
	  (cond
	   ((not *server-run*)
	    (debug:print-info 0 *default-log-port* "*server-run* set to #f. Shutting down.")
	    (shutdown-server-sequence (get-host-name) port))
	   ((timed-out?)
	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
	    (shutdown-server-sequence (get-host-name) port))
	   ((and *server-run*
		 (or (not (timed-out?))
		     (if is-main ;; do not exit if there are other servers (keep main open until all others gone)
			 (> (rmt:get-count-servers sinfo *toppath*) 1)
			 #f)))
	    (if (common:low-noise-print 120 "server continuing")
		(debug:print-info 0 *default-log-port* "Server continuing, seconds since last db access: " (- (current-seconds) last-access)))
	    (loop 0 bad-sync-count (current-milliseconds)))
	   (else
	    (set! *unclean-shutdown* #f)
	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
	    (shutdown-server-sequence (get-host-name) port)
	    #;(debug:print-info 0 *default-log-port* "Sending 'quit to server, received: "
			      (open-send-receive-nn (conc iface":"port)      ;; do this here and not in server-shutdown
						    (sexpr->string 'quit))))))))))

(define (rmt:get-reasonable-hostname)
  (let* ((inhost (or (args:get-arg "-server") "-")))
    (if (equal? inhost "-")
	(get-host-name)
	inhost)))

;; Call this to start the actual server
;;
;; all routes though here end in exit ...
;;
;; This is the point at which servers are started
;;
(define (rmt:server-launch dbname)
  (debug:print-info 0 *default-log-port* "Entered rmt:server-launch")
  (let* ((th2 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server run thread started")
			     (rmt:run (rmt:get-reasonable-hostname)))
			   "Server run"))
	 (th3 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server monitor thread started")
			     (if (args:get-arg "-server")
				 (rmt:keep-running dbname)))
			     "Keep running")))
    (thread-start! th2)
    (thread-sleep! 0.252) ;; give the server time to settle before starting the keep-running monitor.
    (thread-start! th3)
    (set! *didsomething* #t)
    (thread-join! th2)
    (thread-join! th3))
  #f)
	    
;;======================================================================
;;  S E R V E R   -  D I R E C T   C A L L S
;;======================================================================

(define (rmt:kill-server run-id)
  (rmt:send-receive 'kill-server #f (list run-id)))

(define (rmt:start-server run-id)
  (rmt:send-receive 'start-server #f (list run-id)))

(define (rmt:server-info apath dbname)
  (rmt:send-receive 'get-server-info #f (list apath dbname)))

;;======================================================================
;; Nanomsg transport
;;======================================================================

#;(define (is-port-in-use port-num)
  (let* ((ret #f))
    (let-values (((inp oup pid)
		  (process "netstat" (list  "-tulpn" ))))
      (let loop ((inl (read-line inp)))
        (if (not (eof-object? inl))
            (begin 
	      (if (string-search (regexp (conc ":" port-num)) inl)
		  (begin
					;(print "Output: "  inl)
		    (set! ret  #t))
		  (loop (read-line inp)))))))
    ret))

#;(define (open-nn-connection host-port)
  (let ((req  (make-req-socket))
        (uri  (conc "tcp://" host-port)))
    (nng-dial req uri)
    (socket-set! req 'nng/recvtimeo 2000)
    req))

#;(define (send-receive-nn req msg)
  (nng-send req msg)
  (nng-recv req))

#;(define (close-nn-connection req)
  (nng-close! req))
  
;; ;; open connection to server, send message, close connection
;; ;;
;; (define (open-send-close-nn host-port msg #!key (timeout 3) ) ;; default timeout is 3 seconds
;;   (let ((req  (make-req-socket 'req))
;;         (uri  (conc "tcp://" host-port))
;;         (res  #f)
;;         ;; (contacts (alist-ref 'contact attrib))
;;         ;; (mode (alist-ref 'mode attrib))
;; 	)
;;     (socket-set! req 'nng/recvtimeo 2000)
;;     (handle-exceptions
;;      exn
;;      (let ((emsg ((condition-property-accessor 'exn 'message) exn)))
;;        ;; Send notification       
;;        (debug:print 0 *default-log-port* "ERROR: Failed to connect / send to " uri " message was \"" emsg "\"" )
;;        #f)
;;      (nng-dial req uri)
;;      ;; (print "Connected to the server " )
;;      (nng-send req msg)
;;      ;; (print "Request Sent")  
;;      (let* ((th1  (make-thread (lambda ()
;;                                  (let ((resp (nng-recv req)))
;;                                    (nng-close! req)
;;                                    (set! res (if (equal? resp "ok")
;;                                                  #t
;;                                                  #f))))
;;                                "recv thread"))
;;             (th2 (make-thread (lambda ()
;;                                 (thread-sleep! timeout)
;;                                 (thread-terminate! th1))
;; 			      "timer thread")))
;;        (thread-start! th1)
;;        (thread-start! th2)
;;        (thread-join! th1)
;;        res))))
;; 
#;(define (open-send-receive-nn host-port msg #!key (timeout 3) ) ;; default timeout is 3 seconds
  (let ((req  (make-req-socket))
        (uri  (conc "tcp://" host-port))
        (res  #f)) 
    (handle-exceptions
     exn
     (let ((emsg ((condition-property-accessor 'exn 'message) exn)))
       ;; Send notification      
       (debug:print 0 *default-log-port* "ERROR: Failed to connect / send to " uri " message was \"" emsg "\", exn=" exn)
       #f)
     (nng-dial req uri)
     (nng-send req msg)
     (let* ((th1  (make-thread (lambda ()
                                 (let ((resp (nng-recv req)))
                                   (nng-close! req)
                                   ;; (print resp)
                                   (set! res resp)))
                               "recv thread"))
            (th2 (make-thread (lambda ()
                                (thread-sleep! timeout)
                                (thread-terminate! th1))
                             "timer thread")))
       (thread-start! th1)
       (thread-start! th2)
       (thread-join! th1)
       res))))

;;======================================================================
;; S E R V E R   U T I L I T I E S 
;;======================================================================

;; run ping in separate process, safest way in some cases
;;
#;(define (server:ping-server ifaceport)
  (with-input-from-pipe 
   (conc (common:get-megatest-exe) " -ping " ifaceport)
   (lambda ()
     (let loop ((inl (read-line))
		(res "NOREPLY"))
       (if (eof-object? inl)
	   (case (string->symbol res)
	     ((NOREPLY)  #f)
	     ((LOGIN_OK) #t)
	     (else       #f))
	   (loop (read-line) inl))))))

;; NOT USED (well, ok, reference in rpc-transport but otherwise not used).
;;
#;(define (server:login toppath)
  (lambda (toppath)
    (set! *db-last-access* (current-seconds)) ;; might not be needed.
    (if (equal? *toppath* toppath)
	#t
	#f)))

;; (define server:sync-lock-token "SERVER_SYNC_LOCK")
;; (define (server:release-sync-lock)
;;   (db:no-sync-del! *no-sync-db* server:sync-lock-token))
;; (define (server:have-sync-lock?)
;;   (let* ((have-lock-pair (db:no-sync-get-lock *no-sync-db* server:sync-lock-token))
;;          (have-lock?     (car have-lock-pair))
;;          (lock-time      (cdr have-lock-pair))
;;          (lock-age       (- (current-seconds) lock-time)))
;;     (cond
;;      (have-lock? #t)
;;      ((>lock-age
;;        (* 3 (configf:lookup-number *configdat* "server" "minimum-intersync-delay" default: 180)))
;;       (server:release-sync-lock)
;;       (server:have-sync-lock?))
;;      (else #f))))

)

Added ulex-full/ulex.scm version [2c2b2f2441].



















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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;; ulex: Distributed sqlite3 db
;;;
;; Copyright (C) 2018-2021 Matt Welland
;; Redistribution and use in source and binary forms, with or without
;; modification, is permitted.
;;
;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;; ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
;; OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
;; BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
;; USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
;; DAMAGE.

;;======================================================================
;; ABOUT:
;;   See README in the distribution at https://www.kiatoa.com/fossils/ulex
;; NOTES:
;;   Why sql-de-lite and not say, dbi?  - performance mostly, then simplicity.
;;
;;======================================================================

(module ulex
	*
	#;(
     
     ;; NOTE: looking for the handler proc - find the run-listener :)
     
     run-listener     ;; (run-listener handler-proc [port]) => uconn

     ;; NOTE: handler-proc params;
     ;;       (handler-proc rem-host-port qrykey cmd params)

     send-receive     ;; (send-receive uconn host-port cmd data)

     ;; NOTE: cmd can be any plain text symbol except for these;
     ;;         'ping 'ack 'goodbye 'response
     
     set-work-handler ;; (set-work-handler proc)

     wait-and-close   ;; (wait-and-close uconn)

     ulex-listener?
     
     ;; needed to get the interface:port that was automatically found
     udat-port
     udat-host-port
     
     ;; for testing only
     ;; pp-uconn
     
     ;; parameters
     work-method   ;; parameter; 'threads, 'mailbox, 'limited, 'direct
     return-method ;; parameter; 'mailbox, 'polling, 'direct
     )

(import scheme
	chicken.base
	chicken.file
	chicken.io
	chicken.time
	chicken.condition
	chicken.string
	chicken.sort
	chicken.pretty-print
	
	address-info
	mailbox
	matchable
	;; queues
	regex
	regex-case
	simple-exceptions
	s11n
	srfi-1
	srfi-18
	srfi-4
	srfi-69
	system-information
	tcp6
	typed-records
	)

;; udat struct, used by both caller and callee
;; instantiated as uconn by convention
;;
(defstruct udat
  ;; the listener side
  (port #f)
  (host-port #f)
  (socket #f)
  ;; the peers
  (peers  (make-hash-table)) ;; host:port->peer
  ;; work handling
  (work-queue (make-mailbox))
  (work-proc  #f)                ;; set by user
  (cnum       0)                 ;; cookie number
  (mboxes     (make-hash-table)) ;; for the replies
  (avail-cmboxes '())            ;; list of (<cookie> . <mbox>) for re-use
  ;; threads
  (numthreads 10)
  (cmd-thread #f)
  (work-queue-thread #f)
  (num-threads-running 0)
  ) 

;; Parameters

;; work-method:
(define work-method (make-parameter 'mailbox))
;;    mailbox - all rdat goes through mailbox
;;    threads - all rdat immediately executed in new thread
;;    direct  - no queuing
;;

;; return-method, return the result to waiting send-receive:
(define return-method (make-parameter 'mailbox))
;;    mailbox - create a mailbox and use it for passing returning results to send-receive
;;    polling - put the result in a hash table keyed by qrykey and send-receive can poll it for result
;;    direct  - no queuing, result is passed back in single tcp connection
;;

;; ;; struct for keeping track of others we are talking to
;; ;;
;; (defstruct pdat
;;   (host-port  #f)
;;   (conns      '()) ;; list of pcon structs, pop one off when calling the peer
;;   )
;; 
;; ;; struct for peer connections, keep track of expiration etc.
;; ;;
;; (defstruct pcon
;;   (inp #f)
;;   (oup #f)
;;   (exp (+ (current-seconds) 59)) ;; expires at this time, set to (+ (current-seconds) 59)
;;   (lifetime (+ (current-seconds) 600)) ;; throw away and create new after five minutes
;;   )

;;======================================================================
;; listener
;;======================================================================

;; is uconn a ulex connector (listener)
;;
(define (ulex-listener? uconn)
  (udat? uconn))

;; create a tcp listener and return a populated udat struct with
;; my port, address, hostname, pid etc.
;; return #f if fail to find a port to allocate.
;;
;;  if udata-in is #f create the record
;;  if there is already a serv-listener return the udata
;;
(define (setup-listener uconn #!optional (port 4242))
  (handle-exceptions
   exn
   (if (< port 65535)
       (setup-listener uconn (+ port 1))
       #f)
   (connect-listener uconn port)))

(define (connect-listener uconn port)
  ;; (tcp-listener-socket LISTENER)(socket-name so)
  ;; sockaddr-address, sockaddr-port, sockaddr->string
  (let* ((tlsn (tcp-listen port 1000 #f)) ;; (tcp-listen TCPPORT [BACKLOG [HOST]])
	 (addr (get-my-best-address))) ;; (hostinfo-addresses (host-information (current-hostname)))
    (udat-port-set!      uconn port)
    (udat-host-port-set! uconn (conc addr":"port))
    (udat-socket-set!    uconn tlsn)
    uconn))

;; run-listener does all the work of starting a listener in a thread
;; it then returns control
;;
(define (run-listener handler-proc #!optional (port-suggestion 4242))
  (let* ((uconn (make-udat)))
    (udat-work-proc-set! uconn handler-proc)
    (if (setup-listener uconn port-suggestion)
	(let* ((th1 (make-thread (lambda ()(ulex-cmd-loop uconn)) "Ulex command loop"))
	       (th2 (make-thread (lambda ()
				   (case (work-method)
				     ((mailbox limited)
				      (process-work-queue uconn))))
				 "Ulex work queue processor")))
	  ;; (tcp-buffer-size 2048)
	  (thread-start! th1)
	  (thread-start! th2)
	  (udat-cmd-thread-set! uconn th1)
	  (udat-work-queue-thread-set! uconn th2)
	  (print "cmd loop and process workers started, listening on "(udat-host-port uconn)".")
	  uconn)
	(assert #f "ERROR: run-listener called without proper setup."))))

(define (wait-and-close uconn)
  (thread-join! (udat-cmd-thread uconn))
  (tcp-close (udat-socket uconn)))

;;======================================================================
;; peers and connections
;;======================================================================

(define *send-mutex* (make-mutex))

;; send structured data to recipient
;;
;;  NOTE: qrykey is what was called the "cookie" previously
;;
;;     retval tells send to expect and wait for return data (one line) and return it or time out
;;       this is for ping where we don't want to necessarily have set up our own server yet.
;;
;; NOTE: see below for beginnings of code to allow re-use of tcp connections
;;        - I believe (without substantial evidence) that re-using connections will
;;          be beneficial ...
;;
(define (send udata host-port qrykey cmd params)
  (let* ((my-host-port (udat-host-port udata))          ;; remote will return to this
	 (isme         #f #;(equal? host-port my-host-port)) ;; calling myself?
	 ;; dat is a self-contained work block that can be sent or handled locally
	 (dat          (list my-host-port qrykey cmd params #;(cons (current-seconds)(current-milliseconds)))))
    (cond
     (isme (ulex-handler udata dat)) ;; no transmission needed
     (else
      (handle-exceptions ;; TODO - MAKE THIS EXCEPTION CMD SPECIFIC?
	  exn
	  (message exn)
	(begin
	  ;; (mutex-lock! *send-mutex*) ;; DOESN'T SEEM TO HELP
	  (let-values (((inp oup)(tcp-connect host-port)))
	    (let ((res (if (and inp oup)
			   (begin
			     (serialize dat oup)
			     (close-output-port oup)
			     (deserialize inp)
			     )
			   (begin
			     (print "ERROR: send called but no receiver has been setup. Please call setup first!")
			     #f))))
	      (close-input-port inp)
	      ;; (mutex-unlock! *send-mutex*) ;; DOESN'T SEEM TO HELP
	      res)))))))) ;; res will always be 'ack unless return-method is direct

(define (send-via-polling uconn host-port cmd data)
  (let* ((qrykey (make-cookie uconn))
	 (sres   (send uconn host-port qrykey cmd data)))
    (case sres
      ((ack)
       (let loop ((start-time (current-milliseconds)))
	 (if (> (current-milliseconds)(+ start-time 10000)) ;; ten seconds timeout
	     (begin
	       (print "ULEX ERROR: timed out waiting for response from "host-port", "cmd" "data)
	       #f)
	     (let* ((result (hash-table-ref/default (udat-mboxes uconn) qrykey #f))) ;; NOTE: we are re-using mboxes hash
	       (if result ;; result is '(status . result-data) or #f for nothing yet
		   (begin
		     (hash-table-delete! (udat-mboxes uconn) qrykey)
		     (cdr result))
		   (begin
		     (thread-sleep! 0.01)
		     (loop start-time)))))))
      (else
       (print "ULEX ERROR: Communication failed? sres="sres)
       #f))))

(define (send-via-mailbox uconn host-port cmd data)
  (let* ((cmbox     (get-cmbox uconn)) ;; would it be better to keep a stack of mboxes to reuse?
	 (qrykey    (car cmbox))
	 (mbox      (cdr cmbox))
	 (mbox-time (current-milliseconds))
	 (sres      (send uconn host-port qrykey cmd data))) ;; short res
    (if (eq? sres 'ack) ;; BUG: change to be less than server:expiration-timeout?
	(let* ((mbox-timeout-secs    120 #;(if (eq? 'primordial (thread-name (current-thread)))
				     #f
				     120)) ;; timeout)
	       (mbox-timeout-result 'MBOX_TIMEOUT)
	       (res                  (mailbox-receive! mbox mbox-timeout-secs mbox-timeout-result))
	       (mbox-receive-time    (current-milliseconds)))
	  ;; (put-cmbox uconn cmbox) ;; reuse mbox and cookie. is it worth it?
	  (hash-table-delete! (udat-mboxes uconn) qrykey)
	  (if (eq? res 'MBOX_TIMEOUT)
	      (begin
		(print "WARNING: mbox timed out for query "cmd", with data "data
		       ", waiting for response from "host-port".")

		;; here it might make sense to clean up connection records and force clean start?
		;; NO. The progam using ulex needs to do the reset. Right thing here is exception
		
		#f)  ;; convert to raising exception?
	      res))
	(begin
	  (print "ERROR: Communication failed? Got "sres)
	  #f))))
  
;; send a request to the given host-port and register a mailbox in udata
;; wait for the mailbox data and return it
;;
(define (send-receive uconn host-port cmd data)
  (let* ((start-time (current-milliseconds))
	 (result     (cond
		      ((member cmd '(ping goodbye)) ;; these are immediate
		       (send uconn host-port 'ping cmd data))
		      ((eq? (work-method) 'direct)
		       ;; the result from send will be the actual result, not an 'ack
		       (send uconn host-port 'direct cmd data))
		      (else
		       (case (return-method)
			 ((polling)
			  (send-via-polling uconn host-port cmd data))
			 ((mailbox) 
			  (send-via-mailbox uconn host-port cmd data))
			 (else
			  (print "ULEX ERROR: unrecognised return-method "(return-method)".")
			  #f)))))
	 (duration    (- (current-milliseconds) start-time)))
    ;; this is ONLY for development and debugging. It will be removed once Ulex is stable.
    (if (< 5000 duration)
	(print "ULEX WARNING: round-trip took "(inexact->exact (round (/ duration 1000)))
	       " seconds; "cmd", host-port="host-port", data="data))
    result))
    

;;======================================================================
;; responder side
;;======================================================================

;; take a request, rdat, and if not immediate put it in the work queue
;;
;; Reserved cmds; ack ping goodbye response
;;
(define (ulex-handler uconn rdat)
  (assert (list? rdat) "FATAL: ulex-handler give rdat as not list")
  (match rdat ;;  (string-split controldat)
    ((rem-host-port qrykey cmd params);; timedata)
     ;; (print "ulex-handler got: "rem-host-port" qrykey: "qrykey" cmd: "cmd" params: "params)
     (case cmd
       ;; ((ack )(print "Got ack! But why? Should NOT get here.") 'ack)
       ((ping)
	;; (print "Got Ping!")
	;; (add-to-work-queue uconn rdat)
	'ack)
       ((goodbye)
	;; just clear out references to the caller. NOT COMPLETE
	(add-to-work-queue uconn rdat)
	'ack)
       ((response) ;; this is a result from remote processing, send it as mail ...
	(case (return-method)
	  ((polling)
	   (hash-table-set! (udat-mboxes uconn) qrykey (cons 'ok params))
	   'ack)
	  ((mailbox)
	   (let ((mbox (hash-table-ref/default (udat-mboxes uconn) qrykey #f)))
	     (if mbox
		 (begin
		   (mailbox-send! mbox params) ;; params here is our result
		   'ack)
		 (begin
		   (print "ERROR: received result but no associated mbox for cookie "qrykey)
		   'no-mbox-found))))
	  (else (print "ULEX ERROR: unrecognised return-method "(return-method))
		'bad-return-method)))
       (else ;; generic request - hand it to the work queue
	(add-to-work-queue uconn rdat)
	'ack)))
    (else
     (print "ULEX ERROR: bad rdat "rdat)
     'bad-rdat)))

;; given an already set up uconn start the cmd-loop
;;
(define (ulex-cmd-loop uconn)
  (let* ((serv-listener (udat-socket uconn))
	 (listener      (lambda ()
			  (let loop ((state 'start))
			    (let-values (((inp oup)(tcp-accept serv-listener)))
			      ;; (mutex-lock! *send-mutex*) ;; DOESN'T SEEM TO HELP
			      (let* ((rdat  (deserialize inp)) ;; '(my-host-port qrykey cmd params)
				     (resp  (ulex-handler uconn rdat)))
				(serialize resp oup)
				(close-input-port inp)
				(close-output-port oup)
				;; (mutex-unlock! *send-mutex*) ;; DOESN'T SEEM TO HELP
				)
			      (loop state))))))
    ;; start N of them
    (let loop ((thnum   0)
	       (threads '()))
      (if (< thnum 100)
	  (let* ((th (make-thread listener (conc "listener" thnum))))
	    (thread-start! th)
	    (loop (+ thnum 1)
		  (cons th threads)))
	  (map thread-join! threads)))))

;; add a proc to the cmd list, these are done symetrically (i.e. in all instances)
;; so that the proc can be dereferenced remotely
;;
(define (set-work-handler uconn proc)
  (udat-work-proc-set! uconn proc))

;;======================================================================
;; work queues - this is all happening on the listener side
;;======================================================================

;; rdat is (rem-host-port qrykey cmd params)
					     
(define (add-to-work-queue uconn rdat)
  #;(queue-add! (udat-work-queue uconn) rdat)
  (case (work-method)
    ((threads)
     (thread-start! (make-thread (lambda ()
				   (do-work uconn rdat))
				 "worker thread")))
    ((mailbox)
     (mailbox-send! (udat-work-queue uconn) rdat))
    ((direct)
     (do-work uconn rdat))
    (else
     (print "ULEX ERROR: work-method "(work-method)" not recognised, using mailbox.")
     (mailbox-send! (udat-work-queue uconn) rdat))))
     
;; move the logic to return the result somewhere else?
;;
(define (do-work uconn rdat)
  (let* ((proc (udat-work-proc uconn))) ;; get it each time - conceivebly it could change
    ;; put this following into a do-work procedure
    (match rdat
      ((rem-host-port qrykey cmd params)
       (let* ((start-time (current-milliseconds))
	      (result (proc rem-host-port qrykey cmd params))
	      (end-time (current-milliseconds))
	      (run-time (- end-time start-time)))
	 (case (work-method)
	   ((direct) result)
	   (else
	    (print "ULEX: work "cmd", "params" done in "run-time" ms")
	    ;; send 'response as cmd and result as params
	    (send uconn rem-host-port qrykey 'response result) ;; could check for ack
	    (print "ULEX: response sent back to "rem-host-port" for "qrykey" in "(- (current-milliseconds) end-time)"ms")))))
      (MBOX_TIMEOUT 'do-work-timeout)
      (else
       (print "ERROR: rdat "rdat", did not match rem-host-port qrykey cmd params")))))

;; NEW APPROACH:
;;   
(define (process-work-queue uconn) 
  (let ((wqueue (udat-work-queue uconn))
	(proc   (udat-work-proc  uconn))
	(numthr (udat-numthreads uconn)))
    (let loop ((thnum    1)
	       (threads '()))
      (let ((thlst (cons (make-thread (lambda ()
					(let work-loop ()
					  (let ((rdat (mailbox-receive! wqueue 24000 'MBOX_TIMEOUT)))
					    (do-work uconn rdat))
					  (work-loop)))
				      (conc "work thread " thnum))
			 threads)))
	(if (< thnum numthr)
	    (loop (+ thnum 1)
		  thlst)
	    (begin
	      (print "ULEX: Starting "(length thlst)" worker threads.")
	      (map thread-start! thlst)
	      (print "ULEX: Threads started. Joining all.")
	      (map thread-join! thlst)))))))

;; below was to enable re-use of connections. This seems non-trivial so for
;; now lets open on each call
;;
;; ;; given host-port get or create peer struct
;; ;;
;; (define (udat-get-peer uconn host-port)
;;   (or (hash-table-ref/default (udat-peers uconn) host-port #f)
;;       ;; no peer, so create pdat and init it
;;       
;;       ;; NEED stack of connections, pop and use; inp, oup,
;;       ;; creation_time (remove and create new if over 24hrs old
;;       ;; 
;;       (let ((pdat (make-pdat host-port: host-port)))
;; 	(hash-table-set! (udat-peers uconn) host-port pdat)
;; 	pdat)))
;; 
;; ;; is pcon alive
;; 
;; ;; given host-port and pdat get a pcon
;; ;;
;; (define (pdat-get-pcon pdat host-port)
;;   (let loop ((conns (pdat-conns pdat)))
;;     (if (null? conns) ;; none? make and return - do NOT add - it will be pushed back on list later
;; 	(init-pcon (make-pcon))
;; 	(let* ((conn (pop conns)))
;; 	  
;; ;; given host-port get a pcon struct
;; ;;
;; (define (udat-get-pcon 
      
;;======================================================================
;; misc utils
;;======================================================================

(define (make-cookie uconn)
  (let ((newcnum (+ (udat-cnum uconn) 1)))
    (udat-cnum-set! uconn newcnum)
    (conc (udat-host-port uconn) ":"
	  newcnum)))

;; cookie/mboxes

;; we store each mbox with a cookie (<cookie> . <mbox>)
;;
(define (get-cmbox uconn)
  (if (null? (udat-avail-cmboxes uconn))
      (let ((cookie (make-cookie uconn))
	    (mbox   (make-mailbox)))
	(hash-table-set! (udat-mboxes uconn) cookie mbox)
	`(,cookie . ,mbox))
      (let ((cmbox (car (udat-avail-cmboxes uconn))))
	(udat-avail-cmboxes-set! uconn (cdr (udat-avail-cmboxes uconn)))
	cmbox)))

(define (put-cmbox uconn cmbox)
  (udat-avail-cmboxes-set! uconn (cons cmbox (udat-avail-cmboxes uconn))))

(define (pp-uconn uconn)
  (pp (udat->alist uconn)))

  
;;======================================================================
;; network utilities
;;======================================================================

;; NOTE: Look at address-info egg as alternative to some of this

(define (rate-ip ipaddr)
  (regex-case ipaddr
    ( "^127\\..*" _ 0 )
    ( "^(10\\.0|192\\.168)\\..*" _ 1 )
    ( else 2 ) ))

;; Change this to bias for addresses with a reasonable broadcast value?
;;
(define (ip-pref-less? a b)
  (> (rate-ip a) (rate-ip b)))

(define (get-my-best-address)
  (let ((all-my-addresses (get-all-ips)))
    (cond
     ((null? all-my-addresses)
      (get-host-name))                                          ;; no interfaces?
     ((eq? (length all-my-addresses) 1)
      (car all-my-addresses))                      ;; only one to choose from, just go with it
     (else
      (car (sort all-my-addresses ip-pref-less?))))))

(define (get-all-ips-sorted)
  (sort (get-all-ips) ip-pref-less?))

(define (get-all-ips)
  (map address-info-host
       (filter (lambda (x)
		 (equal? (address-info-type x) "tcp"))
	       (address-infos (get-host-name)))))

)

Added ulex-none/dbmgr.scm version [66aa956084].







































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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;;======================================================================
;; Copyright 2022, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(declare (unit dbmgrmod))

(declare (uses ulex))
(declare (uses apimod))
(declare (uses pkts))
(declare (uses commonmod))
(declare (uses dbmod))
(declare (uses mtargs))
(declare (uses portloggermod))
(declare (uses debugprint))

(module dbmgrmod
    *

(import scheme
	chicken.base
	chicken.condition
	chicken.file
	chicken.format
	chicken.port
	chicken.process
	chicken.process-context
	chicken.process-context.posix
	chicken.sort
	chicken.string
	chicken.time
	
	(prefix sqlite3 sqlite3:)
	matchable
	md5
	message-digest
	regex
	s11n
	srfi-1
	srfi-18
	srfi-69
	system-information
	typed-records
	
	pkts
	ulex

	commonmod
	apimod
	dbmod
	debugprint
	(prefix mtargs args:)
	portloggermod
	)

;; ;; Configurations for server
;; ;; (tcp-buffer-size 2048)
;; ;; (max-connections 2048) 
;; 
;; ;; info about me as a listener and my connections to db servers
;; ;; stored (for now) in *db-serv-info*
;; ;;
;; (defstruct servdat
;;   (host #f)
;;   (port #f)
;;   (uuid #f)
;;   (dbfile #f)
;;   (uconn   #f) ;; this is the listener *FOR THIS PROCESS*
;;   (mode    #f)
;;   (status 'starting)
;;   (trynum 0) ;; count the number of ports we've tried
;;   (conns  (make-hash-table)) ;; apath/dbname => conndat
;;   ) 
;; 
;; (define *db-serv-info* (make-servdat))
;; 
;; (define (servdat->url sdat)
;;   (conc (servdat-host sdat)":"(servdat-port sdat)))
;; 
;; ;; db servers contact info
;; ;;
;; (defstruct conndat
;;   (apath    #f)
;;   (dbname   #f)
;;   (fullname #f)
;;   (hostport #f)
;;   (ipaddr   #f)
;;   (port     #f)
;;   (srvpkt   #f)
;;   (srvkey   #f)
;;   (lastmsg  0)
;;   (expires  0))
;; 
;; (define *srvpktspec*
;;   `((server (host    . h)
;; 	    (port    . p)
;; 	    (servkey . k)
;; 	    (pid     . i)
;; 	    (ipaddr  . a)
;; 	    (dbpath  . d))))
;; 
;; ;;======================================================================
;; ;;  S U P P O R T   F U N C T I O N S
;; ;;======================================================================
;; 
;; ;; set up the api proc, seems like there should be a better place for this?
;; ;;
;; ;; IS THIS NEEDED ANYMORE? TODO - REMOVE IF POSSIBLE
;; ;;
;; ;; (define api-proc (make-parameter conc))
;; ;; (api-proc api:execute-requests)
;; 
;; ;; do we have a connection to apath dbname and
;; ;; is it not expired? then return it
;; ;;
;; ;; else setup a connection
;; ;;
;; ;; if that fails, return '(#f "some reason") ;; NB// convert to raising an exception
;; ;;
;; (define (rmt:get-conn remdat apath dbname)
;;   (let* ((fullname (db:dbname->path apath dbname)))
;;     (hash-table-ref/default (servdat-conns remdat) fullname #f)))
;; 
;; (define (rmt:drop-conn remdat apath dbname)
;;   (let* ((fullname (db:dbname->path apath dbname)))
;;     (hash-table-delete! (servdat-conns remdat) fullname)))
;;   
;; (define (rmt:find-main-server uconn apath dbname)
;;   (let* ((pktsdir     (get-pkts-dir apath))
;; 	 (all-srvpkts (get-all-server-pkts pktsdir *srvpktspec*))
;; 	 (viable-srvs (get-viable-servers all-srvpkts dbname)))
;;     (get-the-server uconn apath viable-srvs)))
;; 
;; 
;; (define *connstart-mutex* (make-mutex))
;; (define *last-main-start* 0)
;; 
;; ;; looks for a connection to main, returns if have and not exired
;; ;; creates new otherwise
;; ;; 
;; ;; connections for other servers happens by requesting from main
;; ;;
;; ;; TODO: This is unnecessarily re-creating the record in the hash table
;; ;;
;; (define (rmt:open-main-connection remdat apath)
;;   (let* ((fullpath (db:dbname->path apath ".db/main.db"))
;; 	 (conns    (servdat-conns remdat))
;; 	 (conn     (rmt:get-conn remdat apath ".db/main.db")) ;; (hash-table-ref/default conns fullpath #f)) ;; TODO - create call for this
;; 	 (start-rmt:run (lambda ()
;; 			  (let* ((th1 (make-thread (lambda ()(rmt:run (get-host-name))) "non-db mode server")))
;; 			    (thread-start! th1)
;; 			    (thread-sleep! 1)
;; 			    (let loop ((count 0))
;; 			      (assert (< count 30) "FATAL: responder failed to initialize in rmt:open-main-connection")
;; 			      (if (or (not *db-serv-info*)
;; 				      (not (servdat-uconn *db-serv-info*)))
;; 				  (begin
;; 				    (thread-sleep! 1)
;; 				    (loop (+ count 1)))
;; 				  (begin
;; 				    (servdat-mode-set! *db-serv-info* 'non-db)
;; 				    (servdat-uconn *db-serv-info*)))))))
;; 	 (myconn    (servdat-uconn *db-serv-info*)))
;;     (cond
;;      ((not myconn)
;;       (start-rmt:run)
;;       (rmt:open-main-connection remdat apath))
;;      ((and conn                                             ;; conn is NOT a socket, just saying ...
;; 	   (< (current-seconds) (conndat-expires conn)))
;;       #t) ;; we are current and good to go - we'll deal elsewhere with a server that was killed or died 
;;      ((and conn
;; 	   (>= (current-seconds)(conndat-expires conn)))
;;       (debug:print-info 0 *default-log-port* "connection to "fullpath" server expired. Reconnecting.")
;;       (rmt:drop-conn remdat apath ".db/main.db") ;;
;;       (rmt:open-main-connection remdat apath))
;;      (else
;;       ;; Below we will find or create and connect to main
;;       (debug:print-info 0 *default-log-port* "rmt:open-main-connection - starting from scratch")
;;       (let* ((dbname         (db:run-id->dbname #f))
;; 	     (the-srv        (rmt:find-main-server myconn apath dbname))
;; 	     (start-main-srv (lambda () ;; call IF there is no the-srv found
;; 			       (mutex-lock! *connstart-mutex*)
;; 			       (if (> (- (current-seconds) *last-main-start*) 5) ;; at least four seconds since last attempt to start main server
;; 				   (begin
;; 				     (api:run-server-process apath dbname)
;; 				     (set! *last-main-start* (current-seconds))
;; 				     (thread-sleep! 1))
;; 				   (thread-sleep! 0.25))
;; 			       (mutex-unlock! *connstart-mutex*)
;; 			       (rmt:open-main-connection remdat apath) ;; TODO: Add limit to number of tries
;; 			       )))
;; 	(if (not the-srv) ;; have server, try connecting to it
;; 	    (start-main-srv)
;; 	    (let* ((srv-addr (server-address the-srv)) ;; need serv
;; 		   (ipaddr   (alist-ref 'ipaddr  the-srv))
;; 		   (port     (alist-ref 'port    the-srv))
;; 		   (srvkey   (alist-ref 'servkey the-srv))
;; 		   (fullpath (db:dbname->path apath dbname))
;; 		   
;; 		   (new-the-srv (make-conndat
;; 				 apath:   apath
;; 				 dbname:  dbname
;; 				 fullname: fullpath
;; 				 hostport: srv-addr
;; 				 ;; socket: (open-nn-connection srv-addr)  - TODO - open ulex connection?
;; 				 ipaddr: ipaddr
;; 				 port: port
;; 				 srvpkt: the-srv
;; 				 srvkey: srvkey ;; generated by rmt:get-signature on the server side
;; 				 lastmsg: (current-seconds)
;; 				 expires: (+ (current-seconds)
;; 					     (server:expiration-timeout)
;; 					     -2) ;; this needs to be gathered during the ping
;; 				 )))
;; 	      (hash-table-set! conns fullpath new-the-srv)))
;; 	#t)))))
;; 
;; ;; NB// sinfo is a servdat struct
;; ;;
;; (define (rmt:general-open-connection sinfo apath dbname #!key (num-tries 5))
;;   (assert (not (equal? dbname ".db/main.db")) "ERROR: general-open-connection should never be called with main as the db")
;;   (let* ((mdbname  ".db/main.db") ;; (db:run-id->dbname #f)) TODO: put this back to the lookup when stable
;; 	 (fullname (db:dbname->path apath dbname))
;; 	 (conns    (servdat-conns sinfo))
;; 	 (mconn    (rmt:get-conn sinfo apath ".db/main.db"))
;; 	 (dconn    (rmt:get-conn sinfo apath dbname)))
;;     #;(if (and mconn
;; 	     (not (debug:print-logger)))
;; 	(begin
;; 	  (debug:print-info 0 *default-log-port* "Turning on logging to main, look in logs dir for main log.")
;; 	  (debug:print-logger rmt:log-to-main)))
;;     (cond
;;      ((and mconn
;; 	   dconn
;; 	   (< (current-seconds)(conndat-expires dconn)))
;;       #t) ;; good to go
;;      ((not mconn) ;; no channel open to main? open it...
;;       (rmt:open-main-connection sinfo apath)
;;       (rmt:general-open-connection sinfo apath dbname num-tries: (- num-tries 1)))
;;      ((not dconn)                 ;; no channel open to dbname?     
;;       (let* ((res (rmt:send-receive-real sinfo apath mdbname 'get-server `(,apath ,dbname))))
;; 	(case res
;; 	  ((server-started)
;; 	   (if (> num-tries 0)
;; 	       (begin
;; 		 (thread-sleep! 2)
;; 		 (rmt:general-open-connection sinfo apath dbname num-tries: (- num-tries 1)))
;; 	       (begin
;; 		 (debug:print-error 0 *default-log-port* "Failed to start servers needed or open channel to "apath", "dbname)
;; 		 (exit 1))))
;; 	  (else
;; 	   (if (list? res) ;; server has been registered and the info was returned. pass it on.
;; 	       (begin ;;  ("192.168.0.9" 53817
;; 		      ;;  "5e34239f48e8973b3813221e54701a01" "24310"
;; 		      ;;  "192.168.0.9"
;; 		      ;;  "/home/matt/data/megatest/tests/simplerun"
;; 		 ;;  ".db/1.db")
;; 		 (match
;; 		  res
;; 		  ((host port servkey pid ipaddr apath dbname)
;; 		   (debug:print-info 0 *default-log-port* "got "res)
;; 		   (hash-table-set! conns
;; 				    fullname
;; 				    (make-conndat
;; 				     apath: apath
;; 				     dbname: dbname
;; 				     hostport: (conc host":"port)
;; 				     ;; socket: (open-nn-connection (conc host":"port)) ;; TODO - open ulex connection?
;; 				     ipaddr: ipaddr
;; 				     port: port
;; 				     srvkey: servkey
;; 				     lastmsg: (current-seconds)
;; 				     expires: (+ (current-seconds)
;; 						 (server:expiration-timeout)
;; 						 -2))))
;; 		  (else
;; 		   (debug:print-info 0 *default-log-port* "return data from starting server did not match host port servkey pid ipaddr apath dbname " res)))
;; 		 res)
;; 	       (begin
;; 		 (debug:print-info 0 *default-log-port* "Unexpected result: " res)
;; 		 res)))))))
;;     #t))
;; 
;; ;;======================================================================
;; 
;; ;; FOR DEBUGGING SET TO #t
;; ;; (define *localmode* #t)
;; (define *localmode* #f)
(define *dbstruct* (make-dbr:dbstruct))
 
;; Defaults to current area
;;
(define (rmt:send-receive cmd rid params #!key (attemptnum 1)(area-dat #f))
  (let* ((apath      *toppath*)
	 (dbname     (db:run-id->dbname rid)))
	(api:execute-requests *dbstruct* cmd params)))

;; ;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; ;; sometime in the future
;; ;;
;; (define (rmt:send-receive-real sinfo apath dbname cmd params)
;;   (assert (not (eq? 'primordial (thread-name (current-thread)))) "FATAL: Do not call rmt:send-receive-real in the primodial thread.")
;;   (let* ((cdat (rmt:get-conn sinfo apath dbname)))
;;     (assert cdat "FATAL: rmt:send-receive-real called without the needed channels opened")
;;     (let* ((uconn    (servdat-uconn sinfo)) ;; get the interface to ulex
;; 	   ;; then send-receive using the ulex layer to host-port stored in cdat
;; 	   (res      (send-receive uconn (conndat-hostport cdat) cmd params))
;; 	   #;(th1      (make-thread (lambda ()
;; 				    (set! res (send-receive uconn (conndat-hostport cdat) cmd params)))
;; 				  "send-receive thread")))
;;       ;; (thread-start! th1)
;;       ;; (thread-join! th1)   ;; gratuitious thread stuff is so that mailbox is not used in primordial thead
;;       ;; since we accessed the server we can bump the expires time up
;;       (conndat-expires-set! cdat (+ (current-seconds)
;; 				    (server:expiration-timeout)
;; 				    -2)) ;; two second margin for network time misalignments etc.
;;       res)))
;; 
;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; sometime in the future.
;;
;; Purpose - call the main.db server and request a server be started
;; for the given area path and dbname
;;

(define (rmt:print-db-stats)
  (let ((fmtstr "~40a~7-d~9-d~20,2-f")) ;; "~20,2-f"
    (debug:print 18 *default-log-port* "DB Stats, "(seconds->year-week/day-time (current-seconds))"\n=====================")
    (debug:print 18 *default-log-port* (format #f "~40a~8a~10a~10a" "Cmd" "Count" "TotTime" "Avg"))
    (for-each (lambda (cmd)
		(let ((cmd-dat (hash-table-ref *db-stats* cmd)))
		  (debug:print 18 *default-log-port* (format #f fmtstr cmd (vector-ref cmd-dat 0) (vector-ref cmd-dat 1) (/ (vector-ref cmd-dat 1)(vector-ref cmd-dat 0))))))
	      (sort (hash-table-keys *db-stats*)
		    (lambda (a b)
		      (> (vector-ref (hash-table-ref *db-stats* a) 0)
			 (vector-ref (hash-table-ref *db-stats* b) 0)))))))

(define (rmt:get-max-query-average run-id)
  (mutex-lock! *db-stats-mutex*)
  (let* ((runkey (conc "run-id=" run-id " "))
	 (cmds   (filter (lambda (x)
			   (substring-index runkey x))
			 (hash-table-keys *db-stats*)))
	 (res    (if (null? cmds)
		     (cons 'none 0)
		     (let loop ((cmd (car cmds))
				(tal (cdr cmds))
				(max-cmd (car cmds))
				(res 0))
		       (let* ((cmd-dat (hash-table-ref *db-stats* cmd))
			      (tot     (vector-ref cmd-dat 0))
			      (curravg (/ (vector-ref cmd-dat 1) (vector-ref cmd-dat 0))) ;; count is never zero by construction
			      (currmax (max res curravg))
			      (newmax-cmd (if (> curravg res) cmd max-cmd)))
			 (if (null? tal)
			     (if (> tot 10)
				 (cons newmax-cmd currmax)
				 (cons 'none 0))
			     (loop (car tal)(cdr tal) newmax-cmd currmax)))))))
    (mutex-unlock! *db-stats-mutex*)
    res))

;; ;; host and port are used to ensure we are remove proper records
;; (define (rmt:server-shutdown host port)
;;   (let ((dbfile   (servdat-dbfile *db-serv-info*)))
;;     (debug:print-info 0 *default-log-port* "dbfile is "dbfile)
;;     (if dbfile
;; 	(let* ((am-server  (args:get-arg "-server"))
;; 	       (dbfile     (args:get-arg "-db"))
;; 	       (apath      *toppath*)
;; 	       #;(sinfo     *remotedat*)) ;; foundation for future fix
;; 	  (if *dbstruct-db*
;; 	      (let* ((dbdat      (db:get-dbdat *dbstruct-db* apath dbfile))
;; 		     (db         (dbr:dbdat-db dbdat))
;; 		     (inmem      (dbr:dbdat-db dbdat))   ;; WRONG
;; 		     )
;; 		;; do a final sync here
;; 		(debug:print-info 0 *default-log-port* "Doing final sync for "apath" "dbfile" at "(current-seconds))
;; 		(db:sync-inmem->disk *dbstruct-db* apath dbfile force-sync: #t)
;; 		;; let's finalize here
;; 		(debug:print-info 0 *default-log-port* "Finalizing db and inmem")
;; 		(if (sqlite3:database? db)
;; 		    (sqlite3:finalize! db)
;; 		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, db is not a database, not finalizing..."))
;; 		(if (sqlite3:database? inmem)
;; 		    (sqlite3:finalize! inmem)
;; 		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, inmem is not a database, not finalizing..."))
;; 		(debug:print-info 0 *default-log-port* "Finalizing db and inmem complete"))
;; 	      (debug:print-info 0 *default-log-port* "Db was never opened, no cleanup to do."))
;; 	  (if (not am-server)
;; 	      (debug:print-info 0 *default-log-port* "I am not a server, should NOT get here!")
;; 	      (if (string-match ".*/main.db$" dbfile)
;; 		  (let ((pkt-file (conc (get-pkts-dir *toppath*)
;; 					"/" (servdat-uuid *db-serv-info*)
;; 					".pkt")))
;; 		    (debug:print-info 0 *default-log-port* "removing pkt "pkt-file)
;; 		    (delete-file* pkt-file)
;; 		    (debug:print-info 0 *default-log-port* "Releasing lock (if any) for "dbfile ", host "host", port "port)
;; 		    (db:with-lock-db
;; 		     (servdat-dbfile *db-serv-info*)
;; 		     (lambda (dbh dbfile)
;; 		       (db:release-lock dbh dbfile host port)))) ;; I'm not the server - should not have a lock to remove
;; 		  (let* ((sdat *db-serv-info*) ;; we have a run-id server
;; 			 (host (servdat-host sdat))
;; 			 (port (servdat-port sdat))
;; 			 (uuid (servdat-uuid sdat))
;; 			 (res  (rmt:deregister-server *db-serv-info* *toppath* host port uuid dbfile)))
;; 		    (debug:print-info 0 *default-log-port* "deregistered-server, res="res)
;; 		    (debug:print-info 0 *default-log-port* "deregistering server "host":"port" with uuid "uuid)
;; 		    )))))))
;; 
;; 
;; (define (common:run-sync?)
;;     ;; (and (common:on-homehost?)
;;   (args:get-arg "-server"))
;; 
;; (define *rmt:run-mutex* (make-mutex))
;; (define *rmt:run-flag* #f)
;; 
;; ;; Main entry point to start a server. was start-server
;; (define (rmt:run hostn)
;;   (mutex-lock! *rmt:run-mutex*)
;;   (if *rmt:run-flag*
;;       (begin
;; 	(debug:print-warn 0 *default-log-port* "rmt:run already running.")
;; 	(mutex-unlock! *rmt:run-mutex*))
;;       (begin
;; 	(set! *rmt:run-flag* #t)
;; 	(mutex-unlock! *rmt:run-mutex*)
;; 	;;  ;; Configurations for server
;; 	;;  (tcp-buffer-size 2048)
;; 	;;  (max-connections 2048) 
;; 	(debug:print 2 *default-log-port* "PID: "(current-process-id)". Attempting to start the server ...")
;; 	(if (and *db-serv-info*
;; 		 (servdat-uconn *db-serv-info*))
;; 	    (let* ((uconn (servdat-uconn *db-serv-info*)))
;; 	      (wait-and-close uconn))
;; 	    (let* ((port            (portlogger:open-run-close portlogger:find-port))
;; 		   (handler-proc    (lambda (rem-host-port qrykey cmd params) ;;
;; 				      (set! *db-last-access* (current-seconds))
;; 				      (assert (list? params) "FATAL: handler called with non-list params")
;; 				      (assert (args:get-arg "-server") "FATAL: handler called on non-server side. cmd="cmd", params="params)
;; 				      (debug:print 0 *default-log-port* "handler call: "cmd", params="params)
;; 				      (api:execute-requests *dbstruct-db* cmd params))))
;; 	      ;; (api:process-request *dbstuct-db* 
;; 	      (if (not *db-serv-info*)
;; 		  (set! *db-serv-info* (make-servdat host: hostn port: port)))
;; 	      (let* ((uconn (run-listener handler-proc port))
;; 		     (rport (udat-port uconn))) ;; the real port
;; 		(servdat-host-set! *db-serv-info* hostn)
;; 		(servdat-port-set! *db-serv-info* rport)
;; 		(servdat-uconn-set! *db-serv-info* uconn)
;; 		(wait-and-close uconn)
;; 		(db:print-current-query-stats)
;; 		)))
;; 	(let* ((host (servdat-host *db-serv-info*))
;; 	       (port (servdat-port *db-serv-info*))
;; 	       (mode (or (servdat-mode *db-serv-info*)
;; 			 "non-db")))
;; 	  ;; server exit stuff here
;; 	  ;; (rmt:server-shutdown host port) - always do in on-exit
;; 	  ;; (portlogger:open-run-close portlogger:set-port port "released") ;; moved to on-exit 
;; 	  (debug:print-info 0 *default-log-port* "Server "host":"port" mode "mode"shutdown complete. Exiting")
;; 	  ))))
;; 
;; ;;======================================================================
;; ;; S E R V E R   U T I L I T I E S 
;; ;;======================================================================
;; 
;; 
;; ;;======================================================================
;; ;; NEW SERVER METHOD
;; ;;======================================================================
;; 
;; ;; only use for main.db - need to re-write some of this :(
;; ;;
;; (define (get-lock-db sdat dbfile host port)
;;   (assert host "FATAL: get-lock-db called with host not set.")
;;   (assert port "FATAL: get-lock-db called with port not set.")
;;   (let* ((dbh (db:open-run-db dbfile db:initialize-db)) ;; open-run-db creates a standard db with schema used by all situations
;; 	 (res (db:get-iam-server-lock dbh dbfile host port))
;; 	 (uconn (servdat-uconn sdat)))
;;     ;; res => list then already locked, check server is responsive
;;     ;;     => #t then sucessfully got the lock
;;     ;;     => #f reserved for future use as to indicate something went wrong
;;     (match res
;;       ((owner_pid owner_host owner_port event_time)
;;        (if (server-ready? uconn (conc owner_host":"owner_port) "abc")
;; 	   #f      ;; locked by someone else
;; 	   (begin  ;; locked by someone dead and gone
;; 	     (debug:print 0 *default-log-port* "WARNING: stale lock - have to steal it. This may fail.")
;; 	     (db:steal-lock-db dbh dbfile port))))
;;       (#t  #t) ;; placeholder so that we don't touch res if it is #t
;;       (else (set! res #f)))
;;     (sqlite3:finalize! dbh)
;;     res))
;; 
;; 
;; (define (register-server pkts-dir pkt-spec host port servkey ipaddr dbpath)
;;   (let* ((pkt-dat `((host    . ,host)
;; 		    (port    . ,port)
;; 		    (servkey . ,servkey)
;; 		    (pid     . ,(current-process-id))
;; 		    (ipaddr  . ,ipaddr)
;; 		    (dbpath  . ,dbpath)))
;; 	 (uuid    (write-alist->pkt
;; 		   pkts-dir
;; 		   pkt-dat
;; 		   pktspec: pkt-spec
;; 		   ptype: 'server)))
;;     (debug:print 0 *default-log-port* "Server on "host":"port" registered in pkt "uuid)
;;     uuid))
;; 
;; (define (get-pkts-dir #!optional (apath #f))
;;   (let* ((effective-toppath (or *toppath* apath)))
;;     (assert effective-toppath
;; 	    "ERROR: get-pkts-dir called without *toppath* set. Exiting.")
;;     (let* ((pdir (conc effective-toppath "/.meta/srvpkts")))
;;       (if (file-exists? pdir)
;; 	  pdir
;; 	  (begin
;; 	    (handle-exceptions ;; this exception handler should NOT be needed but ...
;; 		exn
;; 		pdir
;; 	      (create-directory pdir #t))
;; 	    pdir)))))
;; 
;; ;; given a pkts dir read 
;; ;;
;; (define (get-all-server-pkts pktsdir-in pktspec)
;;   (let* ((pktsdir  (if (file-exists? pktsdir-in)
;; 		       pktsdir-in
;; 		       (begin
;; 			 (create-directory pktsdir-in #t)
;; 			 pktsdir-in)))
;; 	 (all-pkt-files (glob (conc pktsdir "/*.pkt"))))
;;     (map (lambda (pkt-file)
;; 	   (read-pkt->alist pkt-file pktspec: pktspec))
;; 	 all-pkt-files)))
;; 
;; (define (server-address srv-pkt)
;;   (conc (alist-ref 'host srv-pkt) ":"
;; 	(alist-ref 'port srv-pkt)))
	
(define (server-ready? uconn host-port key) ;; server-address is host:port
  #;(let* ((params `((cmd . ping)(key . ,key)))
	 (data `((cmd . ping)
		 (key . ,key)
		 (params . ,params))) ;; I don't get it.
	 (res  (send-receive uconn host-port 'ping data)))
    (if (eq? res 'ack) ;; yep, likely it is who we want on the other end
	res
  #f))
  #t)

;; ; from the pkts return servers associated with dbpath
;; ;; NOTE: Only one can be alive - have to check on each
;; ;;       in the list of pkts returned
;; ;;
;; (define (get-viable-servers serv-pkts dbpath)
;;   (let loop ((tail serv-pkts)
;; 	     (res  '()))
;;     (if (null? tail)
;; 	res ;; NOTE: sort by age so oldest is considered first
;; 	(let* ((spkt (car tail)))
;; 	  (loop (cdr tail)
;; 		(if (equal? dbpath (alist-ref 'dbpath spkt))
;; 		    (cons spkt res)
;; 		    res))))))
;; 
;; (define (remove-pkts-if-not-alive uconn serv-pkts)
;;   (filter (lambda (pkt)
;; 	    (let* ((host (alist-ref 'host pkt))
;; 		   (port (alist-ref 'port pkt))
;; 		   (host-port (conc host":"port))
;; 		   (key  (alist-ref 'servkey  pkt))
;; 		   (pktz (alist-ref 'Z        pkt))
;; 		   (res  (server-ready? uconn host-port key)))
;; 	      (if res
;; 		  res
;; 		  (let* ((pktsdir (get-pkts-dir *toppath*))
;; 			 (pktpath (conc pktsdir"/"pktz".pkt")))
;; 		    (debug:print 0 *default-log-port* "WARNING: pkt with no server "pktpath)
;; 		    (delete-file* pktpath)
;; 		    #f))))
;; 	  serv-pkts))
;; 
;; ;; from viable servers get one that is alive and ready
;; ;;
;; (define (get-the-server uconn apath serv-pkts)
;;   (let loop ((tail serv-pkts))
;;     (if (null? tail)
;; 	#f
;; 	(let* ((spkt  (car tail))
;; 	       (host  (alist-ref 'ipaddr spkt))
;; 	       (port  (alist-ref 'port spkt))
;; 	       (host-port (conc host":"port))
;; 	       (dbpth (alist-ref 'dbpath spkt))
;; 	       (srvkey (alist-ref 'Z spkt)) ;; (alist-ref 'srvkey spkt))
;; 	       (addr  (server-address spkt)))
;; 	  (if (server-ready? uconn host-port srvkey)
;; 	      spkt
;; 	      (loop (cdr tail)))))))
;; 
;; ;; am I the "first" in line server? I.e. my D card is smallest
;; ;; use Z card as tie breaker
;; ;;
;; (define (get-best-candidate serv-pkts dbpath)
;;   (if (null? serv-pkts)
;;       #f
;;       (let loop ((tail serv-pkts)
;; 		 (best  (car serv-pkts)))
;; 	(if (null? tail)
;; 	    best
;; 	    (let* ((candidate (car tail))
;; 		   (candidate-bd (string->number (alist-ref 'D candidate)))
;; 		   (best-bd      (string->number (alist-ref 'D best)))
;; 		   ;; bigger number is younger
;; 		   (candidate-z  (alist-ref 'Z candidate))
;; 		   (best-z       (alist-ref 'Z best))
;; 		   (new-best     (cond
;; 				  ((> best-bd candidate-bd) ;; best is younger than candidate
;; 				   candidate)
;; 				  ((< best-bd candidate-bd) ;; candidate is younger than best
;; 				   best)
;; 				  (else
;; 				   (if (string>=? best-z candidate-z)
;; 				       best
;; 				       candidate))))) ;; use Z card as tie breaker
;; 	      (if (null? tail)
;; 		  new-best
;; 		  (loop (cdr tail) new-best)))))))
;; 	  
;; 
;; ;;======================================================================
;; ;; END NEW SERVER METHOD
;; ;;======================================================================
;; 
;; ;; if .db/main.db check the pkts
;; ;; 
;; (define (rmt:wait-for-server pkts-dir db-file server-key)
;;   (let* ((sdat *db-serv-info*))
;;     (let loop ((start-time (current-seconds))
;; 	       (changed    #t)
;; 	       (last-sdat  "not this"))
;;       (begin ;; let ((sdat #f))
;; 	(thread-sleep! 0.01)
;; 	(debug:print-info 0 *default-log-port* "Waiting for server alive signature")
;; 	(mutex-lock! *heartbeat-mutex*)
;; 	(set! sdat *db-serv-info*)
;; 	(mutex-unlock! *heartbeat-mutex*)
;; 	(if (and sdat
;; 		 (not changed)
;; 		 (> (- (current-seconds) start-time) 2))
;; 	    (let* ((uconn (servdat-uconn sdat)))
;; 	      (servdat-status-set! sdat 'iface-stable)
;; 	      (debug:print-info 0 *default-log-port* "Received server alive signature, now attempting to lock in server")
;; 	      ;; create a server pkt in *toppath*/.meta/srvpkts
;; 	      
;; 	      ;; TODO:
;; 	      ;;   1. change sdat to stuct
;; 	      ;;   2. add uuid to struct
;; 	      ;;   3. update uuid in sdat here
;; 	      ;;
;; 	      (servdat-uuid-set! sdat
;; 				 (register-server
;; 				  pkts-dir *srvpktspec*
;; 				  (get-host-name)
;; 				  (servdat-port sdat) server-key
;; 				  (servdat-host sdat) db-file))
;; 	      ;; (set! *my-signature* (servdat-uuid sdat)) ;; replace with Z, no, stick with proper key
;; 	      ;; now read pkts and see if we are a contender
;; 	      (let* ((all-pkts     (get-all-server-pkts pkts-dir *srvpktspec*))
;; 		     (viables      (get-viable-servers all-pkts db-file))
;; 		     (alive        (remove-pkts-if-not-alive uconn viables))
;; 		     (best-srv     (get-best-candidate alive db-file))
;; 		     (best-srv-key (if best-srv (alist-ref 'servkey best-srv) #f))
;; 		     (i-am-srv     (equal? best-srv-key server-key))
;; 		     (delete-pkt   (lambda ()
;; 				     (let* ((pktfile (conc (get-pkts-dir *toppath*)
;; 							 "/" (servdat-uuid *db-serv-info*)
;; 							 ".pkt")))
;; 				       (debug:print-info 0 *default-log-port* "Attempting to remove bogus pkt file "pktfile)
;; 				       (delete-file* pktfile))))) ;; remove immediately instead of waiting for on-exit
;; 		(debug:print 0 *default-log-port* "best-srv-key: "best-srv-key", server-key: "server-key", i-am-srv: "i-am-srv)
;; 		;; am I the best-srv, compare server-keys to know
;; 		(if i-am-srv
;; 		    (if (get-lock-db sdat db-file (servdat-host sdat)(servdat-port sdat)) ;; (db:get-iam-server-lock *dbstruct-db* *toppath* run-id)
;; 			(begin
;; 			  (debug:print-info 0 *default-log-port* "I'm the server!")
;; 			  (servdat-dbfile-set! sdat db-file)
;; 			  (servdat-status-set! sdat 'db-locked))
;; 			(begin
;; 			  (debug:print-info 0 *default-log-port* "I'm not the server, exiting.")
;; 			  (bdat-time-to-exit-set! *bdat* #t)
;; 			  (delete-pkt)
;; 			  (thread-sleep! 0.2)
;; 			  (exit)))
;; 		    (begin
;; 		      (debug:print-info 0 *default-log-port*
;; 				   "Keys do not match "best-srv-key", "server-key", exiting.")
;; 		      (bdat-time-to-exit-set! *bdat* #t)
;; 		      (delete-pkt)
;; 		      (thread-sleep! 0.2)
;; 		      (exit)))
;; 		sdat))
;; 	    (begin ;; sdat not yet contains server info
;; 	      (debug:print-info 0 *default-log-port* "Still waiting, last-sdat=" last-sdat)
;; 	      (sleep 4)
;; 	      (if (> (- (current-seconds) start-time) 120) ;; been waiting for two minutes
;; 		  (begin
;; 		    (debug:print-error 0 *default-log-port* "transport appears to have died, exiting server")
;; 		    (exit))
;; 		  (loop start-time
;; 			(equal? sdat last-sdat)
;; 			sdat))))))))
;; 
;; (define (rmt:register-server sinfo apath iface port server-key dbname)
;;   (servdat-conns sinfo) ;; just checking types
;;   (rmt:open-main-connection sinfo apath) ;; we need a channel to main.db
;;   (rmt:send-receive-real sinfo apath      ;; params: host port servkey pid ipaddr dbpath
;; 			 (db:run-id->dbname #f)
;; 			 'register-server `(,iface
;; 					    ,port
;; 					    ,server-key
;; 					    ,(current-process-id)
;; 					    ,iface
;; 					    ,apath
;; 					    ,dbname)))
;; 
;; (define (rmt:get-count-servers sinfo apath)
;;   (servdat-conns sinfo) ;; just checking types
;;   (rmt:open-main-connection sinfo apath) ;; we need a channel to main.db
;;   (rmt:send-receive-real sinfo apath      ;; params: host port servkey pid ipaddr dbpath
;; 			 (db:run-id->dbname #f)
;; 			 'get-count-servers `(,apath)))

(define (rmt:get-servers-info apath)
  (rmt:send-receive 'get-servers-info #f `(,apath)))

;; (define (rmt:deregister-server db-serv-info apath iface port server-key dbname)
;;   (rmt:open-main-connection db-serv-info apath) ;; we need a channel to main.db
;;   (rmt:send-receive-real db-serv-info apath      ;; params: host port servkey pid ipaddr dbpath
;;                          (db:run-id->dbname #f)
;;                          'deregister-server `(,iface
;;                                               ,port
;;                                               ,server-key
;;                                               ,(current-process-id)
;;                                               ,iface
;;                                               ,apath
;;                                               ,dbname)))
;; 
;; (define (rmt:wait-for-stable-interface #!optional (num-tries-allowed 100))
;;   ;; wait until *db-serv-info* stops changing
;;   (let* ((stime (current-seconds)))
;;     (let loop ((last-host  #f)
;; 	       (last-port  #f)
;; 	       (tries 0))
;;       (let* ((curr-host (and *db-serv-info* (servdat-host *db-serv-info*)))
;; 	     (curr-port (and *db-serv-info* (servdat-port *db-serv-info*))))
;; 	;; first we verify port and interface, update *db-serv-info* in need be.
;; 	(cond
;; 	 ((> tries num-tries-allowed)
;; 	  (debug:print 0 *default-log-port* "rmt:keep-running, giving up after trying for several minutes.")
;; 	  (exit 1))
;; 	 ((not *db-serv-info*)
;; 	  (thread-sleep! 0.25)
;; 	  (loop curr-host curr-port (+ tries 1)))
;; 	 ((or (not last-host)(not last-port))
;; 	  (debug:print 0 *default-log-port* "rmt:keep-running, still no interface, tries="tries)
;; 	  (thread-sleep! 0.25)
;; 	  (loop curr-host curr-port (+ tries 1)))
;; 	 ((or (not (equal? last-host curr-host))
;; 	      (not (equal? last-port curr-port)))
;; 	  (debug:print-info 0 *default-log-port* "WARNING: interface changed, refreshing iface and port info")
;; 	  (thread-sleep! 0.25)
;; 	  (loop curr-host curr-port (+ tries 1)))
;; 	 ((< (- (current-seconds) stime) 1) ;; keep up the looping until at least 3 seconds have passed
;; 	  (thread-sleep! 0.5)
;; 	  (loop curr-host curr-port (+ tries 1)))
;; 	 (else
;; 	  (rmt:get-signature) ;; sets *my-signature* as side effect
;; 	  (servdat-status-set! *db-serv-info* 'interface-stable)
;; 	  (debug:print 0 *default-log-port*
;; 		       "SERVER STARTED: " curr-host
;; 		       ":" curr-port
;; 		       " AT " (current-seconds) " server signature: " *my-signature*
;; 		       " with "(servdat-trynum *db-serv-info*)" port changes")
;; 	  (flush-output *default-log-port*)
;; 	  #t))))))
;; 
;; ;; run rmt:keep-running in a parallel thread to monitor that the db is being 
;; ;; used and to shutdown after sometime if it is not.
;; ;;
;; (define (rmt:keep-running dbname) 
;;   ;; if none running or if > 20 seconds since 
;;   ;; server last used then start shutdown
;;   ;; This thread waits for the server to come alive
;;   (debug:print-info 0 *default-log-port* "Starting the sync-back, keep alive thread in server")
;; 
;;   (let* ((sinfo             *db-serv-info*)
;; 	 (server-start-time (current-seconds))
;; 	 (pkts-dir          (get-pkts-dir))
;; 	 (server-key        (rmt:get-signature)) ;; This servers key
;; 	 (is-main           (equal? (args:get-arg "-db") ".db/main.db"))
;; 	 (last-access       0)
;; 	 (server-timeout    (server:expiration-timeout))
;; 	 (shutdown-server-sequence (lambda (host port)
;; 				     (set! *unclean-shutdown* #f) ;; Should not be needed anymore
;; 				     (debug:print-info 0 *default-log-port* "Starting to shutdown the server. pid="(current-process-id))
;; 				     ;; (rmt:server-shutdown host port) -- called in on-exit
;; 				     ;; (portlogger:open-run-close portlogger:set-port port "released") called in on-exit
;; 				     (exit)))
;; 	 (timed-out?        (lambda ()
;; 			      (<= (+ last-access server-timeout)
;; 				  (current-seconds)))))
;;     (servdat-dbfile-set! *db-serv-info* (args:get-arg "-db"))
;;     ;; main and run db servers have both got wait logic (could/should merge it)
;;     (if is-main
;; 	(rmt:wait-for-server pkts-dir dbname server-key)
;; 	(rmt:wait-for-stable-interface))
;;     ;; this is our forever loop
;;     (let* ((iface (servdat-host *db-serv-info*))
;; 	   (port  (servdat-port *db-serv-info*))
;; 	   (uconn (servdat-uconn *db-serv-info*)))
;;       (let loop ((count          0)
;; 		 (bad-sync-count 0)
;; 		 (start-time     (current-milliseconds)))
;; 	(if (and (not is-main)
;; 		 (common:low-noise-print 60 "servdat-status"))
;; 	    (debug:print-info 0 *default-log-port* "servdat-status is " (servdat-status *db-serv-info*)))
;; 
;; 	(mutex-lock! *heartbeat-mutex*)
;; 	;; set up the database handle
;; 	(if (not *dbstruct-db*) ;; no db opened yet, open the db and register with main if appropriate
;; 	      (let ((watchdog (bdat-watchdog *bdat*)))
;; 		(debug:print 0 *default-log-port* "SERVER: dbprep")
;; 		(db:setup dbname) ;; sets *dbstruct-db* as side effect
;; 		(servdat-status-set! *db-serv-info* 'db-opened)
;; 		;; IFF I'm not main, call into main and register self
;; 		(if (not is-main)
;; 		    (let ((res (rmt:register-server sinfo
;; 						    *toppath* iface port
;; 						    server-key dbname)))
;; 		      (if res ;; we are the server
;; 			  (servdat-status-set! *db-serv-info* 'have-interface-and-db)
;; 			  ;; now check that the db locker is alive, clear it out if not
;; 			  (let* ((serv-info (rmt:server-info *toppath* dbname)))
;; 			    (match serv-info
;; 				   ((host port servkey pid ipaddr apath dbpath)
;; 				    (if (not (server-ready? uconn (conc host":"port) servkey))
;; 					(begin
;; 					  (debug:print-info 0 *default-log-port* "Server registered but not alive. Removing and trying again.")
;; 					  (rmt:deregister-server sinfo apath host port servkey dbpath) ;; servkey pid ipaddr apath dbpath)
;; 					  (loop (+ count 1) bad-sync-count start-time))))
;; 				   (else
;; 				    (debug:print 0 *default-log-port* "We are not the server for "dbname", exiting. Server info is: "serv-info)
;; 				    (exit)))))))
;; 		(debug:print 0 *default-log-port*
;; 			     "SERVER: running, db "dbname" opened, megatest version: "
;; 			   (common:get-full-version))
;; 	      ;; start the watchdog
;; 
;; 	      ;; is this really needed?
;; 	      
;; 	      #;(if watchdog
;; 		  (if (not (member (thread-state watchdog)
;; 				   '(ready running blocked
;; 					   sleeping dead)))
;; 		      (begin
;; 			(debug:print-info 0 *default-log-port* "Starting watchdog thread (in state "(thread-state watchdog)")")
;; 			(thread-start! watchdog))
;; 		      (debug:print-info 0 *default-log-port* "Not starting watchdog thread (in state "(thread-state watchdog)")"))
;; 		  (debug:print 0 *default-log-port* "ERROR: *watchdog* not setup, cannot start it."))
;; 	      #;(loop (+ count 1) bad-sync-count start-time)
;; 	      ))
;; 	
;; 	(db:sync-inmem->disk *dbstruct-db* *toppath* dbname force-sync: #t)
;; 	
;; 	(mutex-unlock! *heartbeat-mutex*)
;; 	
;; 	;; when things go wrong we don't want to be doing the various
;; 	;; queries too often so we strive to run this stuff only every
;; 	;; four seconds or so.
;; 	(let* ((sync-time (- (current-milliseconds) start-time))
;; 	       (rem-time  (quotient (- 4000 sync-time) 1000)))
;; 	  (if (and (<= rem-time 4)
;; 		   (>  rem-time 0))
;; 	      (thread-sleep! rem-time)))
;;     
;; 	;; Transfer *db-last-access* to last-access to use in checking that we are still alive
;; 	(set! last-access *db-last-access*)
;; 	
;; 	(if (< count 1) ;; 3x3 = 9 secs aprox
;; 	    (loop (+ count 1) bad-sync-count (current-milliseconds)))
;; 	
;; 	(if (common:low-noise-print 60 "dbstats")
;; 	    (begin
;; 	      (debug:print 0 *default-log-port* "Server stats:")
;; 	      (db:print-current-query-stats)))
;; 	(let* ((hrs-since-start  (/ (- (current-seconds) server-start-time) 3600)))
;; 	  (cond
;; 	   ((not *server-run*)
;; 	    (debug:print-info 0 *default-log-port* "*server-run* set to #f. Shutting down.")
;; 	    (shutdown-server-sequence (get-host-name) port))
;; 	   ((timed-out?)
;; 	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
;; 	    (shutdown-server-sequence (get-host-name) port))
;; 	   ((and *server-run*
;; 		 (or (not (timed-out?))
;; 		     (if is-main ;; do not exit if there are other servers (keep main open until all others gone)
;; 			 (> (rmt:get-count-servers sinfo *toppath*) 1)
;; 			 #f)))
;; 	    (if (common:low-noise-print 120 "server continuing")
;; 		(debug:print-info 0 *default-log-port* "Server continuing, seconds since last db access: " (- (current-seconds) last-access)))
;; 	    (loop 0 bad-sync-count (current-milliseconds)))
;; 	   (else
;; 	    (set! *unclean-shutdown* #f)
;; 	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
;; 	    (shutdown-server-sequence (get-host-name) port)
;; 	    #;(debug:print-info 0 *default-log-port* "Sending 'quit to server, received: "
;; 			      (open-send-receive-nn (conc iface":"port)      ;; do this here and not in server-shutdown
;; 						    (sexpr->string 'quit))))))))))
;; 
;; (define (rmt:get-reasonable-hostname)
;;   (let* ((inhost (or (args:get-arg "-server") "-")))
;;     (if (equal? inhost "-")
;; 	(get-host-name)
;; 	inhost)))
;; 
;; Call this to start the actual server
;;
;; all routes though here end in exit ...
;;
;; This is the point at which servers are started
;;
(define (rmt:server-launch dbname)
  (debug:print-info 0 *default-log-port* "Entered rmt:server-launch")
  #;(let* ((th2 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server run thread started")
			     (rmt:run (rmt:get-reasonable-hostname)))
			   "Server run"))
	 (th3 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server monitor thread started")
			     (if (args:get-arg "-server")
				 (rmt:keep-running dbname)))
			     "Keep running")))
    (thread-start! th2)
    (thread-sleep! 0.252) ;; give the server time to settle before starting the keep-running monitor.
    (thread-start! th3)
    (set! *didsomething* #t)
    (thread-join! th2)
    (thread-join! th3))
  #f)
;; 	    
;; ;;======================================================================
;; ;;  S E R V E R   -  D I R E C T   C A L L S
;; ;;======================================================================
;; 
;; (define (rmt:kill-server run-id)
;;   (rmt:send-receive 'kill-server #f (list run-id)))
;; 
;; (define (rmt:start-server run-id)
;;   (rmt:send-receive 'start-server #f (list run-id)))
;; 
;; (define (rmt:server-info apath dbname)
;;   (rmt:send-receive 'get-server-info #f (list apath dbname)))
;; 
;; ;;======================================================================
;; ;; Nanomsg transport
;; ;;======================================================================
;; 
;; #;(define (is-port-in-use port-num)
;;   (let* ((ret #f))
;;     (let-values (((inp oup pid)
;; 		  (process "netstat" (list  "-tulpn" ))))
;;       (let loop ((inl (read-line inp)))
;;         (if (not (eof-object? inl))
;;             (begin 
;; 	      (if (string-search (regexp (conc ":" port-num)) inl)
;; 		  (begin
;; 					;(print "Output: "  inl)
;; 		    (set! ret  #t))
;; 		  (loop (read-line inp)))))))
;;     ret))
;; 
;; #;(define (open-nn-connection host-port)
;;   (let ((req  (make-req-socket))
;;         (uri  (conc "tcp://" host-port)))
;;     (nng-dial req uri)
;;     (socket-set! req 'nng/recvtimeo 2000)
;;     req))
;; 
;; #;(define (send-receive-nn req msg)
;;   (nng-send req msg)
;;   (nng-recv req))
;; 
;; #;(define (close-nn-connection req)
;;   (nng-close! req))
;;   
;; ;; ;; open connection to server, send message, close connection
;; ;; ;;
;; ;; (define (open-send-close-nn host-port msg #!key (timeout 3) ) ;; default timeout is 3 seconds
;; ;;   (let ((req  (make-req-socket 'req))
;; ;;         (uri  (conc "tcp://" host-port))
;; ;;         (res  #f)
;; ;;         ;; (contacts (alist-ref 'contact attrib))
;; ;;         ;; (mode (alist-ref 'mode attrib))
;; ;; 	)
;; ;;     (socket-set! req 'nng/recvtimeo 2000)
;; ;;     (handle-exceptions
;; ;;      exn
;; ;;      (let ((emsg ((condition-property-accessor 'exn 'message) exn)))
;; ;;        ;; Send notification       
;; ;;        (debug:print 0 *default-log-port* "ERROR: Failed to connect / send to " uri " message was \"" emsg "\"" )
;; ;;        #f)
;; ;;      (nng-dial req uri)
;; ;;      ;; (print "Connected to the server " )
;; ;;      (nng-send req msg)
;; ;;      ;; (print "Request Sent")  
;; ;;      (let* ((th1  (make-thread (lambda ()
;; ;;                                  (let ((resp (nng-recv req)))
;; ;;                                    (nng-close! req)
;; ;;                                    (set! res (if (equal? resp "ok")
;; ;;                                                  #t
;; ;;                                                  #f))))
;; ;;                                "recv thread"))
;; ;;             (th2 (make-thread (lambda ()
;; ;;                                 (thread-sleep! timeout)
;; ;;                                 (thread-terminate! th1))
;; ;; 			      "timer thread")))
;; ;;        (thread-start! th1)
;; ;;        (thread-start! th2)
;; ;;        (thread-join! th1)
;; ;;        res))))
;; ;; 
;; #;(define (open-send-receive-nn host-port msg #!key (timeout 3) ) ;; default timeout is 3 seconds
;;   (let ((req  (make-req-socket))
;;         (uri  (conc "tcp://" host-port))
;;         (res  #f)) 
;;     (handle-exceptions
;;      exn
;;      (let ((emsg ((condition-property-accessor 'exn 'message) exn)))
;;        ;; Send notification      
;;        (debug:print 0 *default-log-port* "ERROR: Failed to connect / send to " uri " message was \"" emsg "\", exn=" exn)
;;        #f)
;;      (nng-dial req uri)
;;      (nng-send req msg)
;;      (let* ((th1  (make-thread (lambda ()
;;                                  (let ((resp (nng-recv req)))
;;                                    (nng-close! req)
;;                                    ;; (print resp)
;;                                    (set! res resp)))
;;                                "recv thread"))
;;             (th2 (make-thread (lambda ()
;;                                 (thread-sleep! timeout)
;;                                 (thread-terminate! th1))
;;                              "timer thread")))
;;        (thread-start! th1)
;;        (thread-start! th2)
;;        (thread-join! th1)
;;        res))))
;; 
;; ;;======================================================================
;; ;; S E R V E R   U T I L I T I E S 
;; ;;======================================================================
;; 
;; ;; run ping in separate process, safest way in some cases
;; ;;
;; #;(define (server:ping-server ifaceport)
;;   (with-input-from-pipe 
;;    (conc (common:get-megatest-exe) " -ping " ifaceport)
;;    (lambda ()
;;      (let loop ((inl (read-line))
;; 		(res "NOREPLY"))
;;        (if (eof-object? inl)
;; 	   (case (string->symbol res)
;; 	     ((NOREPLY)  #f)
;; 	     ((LOGIN_OK) #t)
;; 	     (else       #f))
;; 	   (loop (read-line) inl))))))
;; 
;; ;; NOT USED (well, ok, reference in rpc-transport but otherwise not used).
;; ;;
;; #;(define (server:login toppath)
;;   (lambda (toppath)
;;     (set! *db-last-access* (current-seconds)) ;; might not be needed.
;;     (if (equal? *toppath* toppath)
;; 	#t
;; 	#f)))
;; 
;; ;; (define server:sync-lock-token "SERVER_SYNC_LOCK")
;; ;; (define (server:release-sync-lock)
;; ;;   (db:no-sync-del! *no-sync-db* server:sync-lock-token))
;; ;; (define (server:have-sync-lock?)
;; ;;   (let* ((have-lock-pair (db:no-sync-get-lock *no-sync-db* server:sync-lock-token))
;; ;;          (have-lock?     (car have-lock-pair))
;; ;;          (lock-time      (cdr have-lock-pair))
;; ;;          (lock-age       (- (current-seconds) lock-time)))
;; ;;     (cond
;; ;;      (have-lock? #t)
;; ;;      ((>lock-age
;; ;;        (* 3 (configf:lookup-number *configdat* "server" "minimum-intersync-delay" default: 180)))
;; ;;       (server:release-sync-lock)
;; ;;       (server:have-sync-lock?))
;; ;;      (else #f))))

)

Added ulex-none/ulex.scm version [4551982255].



















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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;; ulex: Distributed sqlite3 db
;;;
;; Copyright (C) 2018-2021 Matt Welland
;; Redistribution and use in source and binary forms, with or without
;; modification, is permitted.
;;
;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;; ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
;; OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
;; BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
;; USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
;; DAMAGE.

;;======================================================================
;; ABOUT:
;;   See README in the distribution at https://www.kiatoa.com/fossils/ulex
;; NOTES:
;;   Why sql-de-lite and not say, dbi?  - performance mostly, then simplicity.
;;
;;======================================================================

(module ulex
	*
	#;(
     
     ;; NOTE: looking for the handler proc - find the run-listener :)
     
     run-listener     ;; (run-listener handler-proc [port]) => uconn

     ;; NOTE: handler-proc params;
     ;;       (handler-proc rem-host-port qrykey cmd params)

     send-receive     ;; (send-receive uconn host-port cmd data)

     ;; NOTE: cmd can be any plain text symbol except for these;
     ;;         'ping 'ack 'goodbye 'response
     
     set-work-handler ;; (set-work-handler proc)

     wait-and-close   ;; (wait-and-close uconn)

     ulex-listener?
     
     ;; needed to get the interface:port that was automatically found
     udat-port
     udat-host-port
     
     ;; for testing only
     ;; pp-uconn
     
     ;; parameters
     work-method   ;; parameter; 'threads, 'mailbox, 'limited, 'direct
     return-method ;; parameter; 'mailbox, 'polling, 'direct
     )

(import scheme
	chicken.base
	chicken.file
	chicken.io
	chicken.time
	chicken.condition
	chicken.string
	chicken.sort
	chicken.pretty-print
	
	address-info
	mailbox
	matchable
	;; queues
	regex
	regex-case
	simple-exceptions
	s11n
	srfi-1
	srfi-18
	srfi-4
	srfi-69
	system-information
	tcp6
	typed-records
	)

;; ;; udat struct, used by both caller and callee
;; ;; instantiated as uconn by convention
;; ;;
;; (defstruct udat
;;   ;; the listener side
;;   (port #f)
;;   (host-port #f)
;;   (socket #f)
;;   ;; the peers
;;   (peers  (make-hash-table)) ;; host:port->peer
;;   ;; work handling
;;   (work-queue (make-mailbox))
;;   (work-proc  #f)                ;; set by user
;;   (cnum       0)                 ;; cookie number
;;   (mboxes     (make-hash-table)) ;; for the replies
;;   (avail-cmboxes '())            ;; list of (<cookie> . <mbox>) for re-use
;;   ;; threads
;;   (numthreads 10)
;;   (cmd-thread #f)
;;   (work-queue-thread #f)
;;   (num-threads-running 0)
;;   ) 
;; 
;; ;; Parameters
;; 
;; ;; work-method:
;; (define work-method (make-parameter 'mailbox))
;; ;;    mailbox - all rdat goes through mailbox
;; ;;    threads - all rdat immediately executed in new thread
;; ;;    direct  - no queuing
;; ;;
;; 
;; ;; return-method, return the result to waiting send-receive:
;; (define return-method (make-parameter 'mailbox))
;; ;;    mailbox - create a mailbox and use it for passing returning results to send-receive
;; ;;    polling - put the result in a hash table keyed by qrykey and send-receive can poll it for result
;; ;;    direct  - no queuing, result is passed back in single tcp connection
;; ;;
;; 
;; ;; ;; struct for keeping track of others we are talking to
;; ;; ;;
;; ;; (defstruct pdat
;; ;;   (host-port  #f)
;; ;;   (conns      '()) ;; list of pcon structs, pop one off when calling the peer
;; ;;   )
;; ;; 
;; ;; ;; struct for peer connections, keep track of expiration etc.
;; ;; ;;
;; ;; (defstruct pcon
;; ;;   (inp #f)
;; ;;   (oup #f)
;; ;;   (exp (+ (current-seconds) 59)) ;; expires at this time, set to (+ (current-seconds) 59)
;; ;;   (lifetime (+ (current-seconds) 600)) ;; throw away and create new after five minutes
;; ;;   )
;; 
;; ;;======================================================================
;; ;; listener
;; ;;======================================================================
;; 
;; ;; is uconn a ulex connector (listener)
;; ;;
;; (define (ulex-listener? uconn)
;;   (udat? uconn))
;; 
;; ;; create a tcp listener and return a populated udat struct with
;; ;; my port, address, hostname, pid etc.
;; ;; return #f if fail to find a port to allocate.
;; ;;
;; ;;  if udata-in is #f create the record
;; ;;  if there is already a serv-listener return the udata
;; ;;
;; (define (setup-listener uconn #!optional (port 4242))
;;   (handle-exceptions
;;    exn
;;    (if (< port 65535)
;;        (setup-listener uconn (+ port 1))
;;        #f)
;;    (connect-listener uconn port)))
;; 
;; (define (connect-listener uconn port)
;;   ;; (tcp-listener-socket LISTENER)(socket-name so)
;;   ;; sockaddr-address, sockaddr-port, sockaddr->string
;;   (let* ((tlsn (tcp-listen port 1000 #f)) ;; (tcp-listen TCPPORT [BACKLOG [HOST]])
;; 	 (addr (get-my-best-address))) ;; (hostinfo-addresses (host-information (current-hostname)))
;;     (udat-port-set!      uconn port)
;;     (udat-host-port-set! uconn (conc addr":"port))
;;     (udat-socket-set!    uconn tlsn)
;;     uconn))
;; 
;; ;; run-listener does all the work of starting a listener in a thread
;; ;; it then returns control
;; ;;
;; (define (run-listener handler-proc #!optional (port-suggestion 4242))
;;   (let* ((uconn (make-udat)))
;;     (udat-work-proc-set! uconn handler-proc)
;;     (if (setup-listener uconn port-suggestion)
;; 	(let* ((th1 (make-thread (lambda ()(ulex-cmd-loop uconn)) "Ulex command loop"))
;; 	       (th2 (make-thread (lambda ()
;; 				   (case (work-method)
;; 				     ((mailbox limited)
;; 				      (process-work-queue uconn))))
;; 				 "Ulex work queue processor")))
;; 	  ;; (tcp-buffer-size 2048)
;; 	  (thread-start! th1)
;; 	  (thread-start! th2)
;; 	  (udat-cmd-thread-set! uconn th1)
;; 	  (udat-work-queue-thread-set! uconn th2)
;; 	  (print "cmd loop and process workers started, listening on "(udat-host-port uconn)".")
;; 	  uconn)
;; 	(assert #f "ERROR: run-listener called without proper setup."))))
;; 
;; (define (wait-and-close uconn)
;;   (thread-join! (udat-cmd-thread uconn))
;;   (tcp-close (udat-socket uconn)))
;; 
;; ;;======================================================================
;; ;; peers and connections
;; ;;======================================================================
;; 
;; (define *send-mutex* (make-mutex))
;; 
;; ;; send structured data to recipient
;; ;;
;; ;;  NOTE: qrykey is what was called the "cookie" previously
;; ;;
;; ;;     retval tells send to expect and wait for return data (one line) and return it or time out
;; ;;       this is for ping where we don't want to necessarily have set up our own server yet.
;; ;;
;; ;; NOTE: see below for beginnings of code to allow re-use of tcp connections
;; ;;        - I believe (without substantial evidence) that re-using connections will
;; ;;          be beneficial ...
;; ;;
;; (define (send udata host-port qrykey cmd params)
;;   (let* ((my-host-port (udat-host-port udata))          ;; remote will return to this
;; 	 (isme         #f #;(equal? host-port my-host-port)) ;; calling myself?
;; 	 ;; dat is a self-contained work block that can be sent or handled locally
;; 	 (dat          (list my-host-port qrykey cmd params #;(cons (current-seconds)(current-milliseconds)))))
;;     (cond
;;      (isme (ulex-handler udata dat)) ;; no transmission needed
;;      (else
;;       (handle-exceptions ;; TODO - MAKE THIS EXCEPTION CMD SPECIFIC?
;; 	  exn
;; 	  (message exn)
;; 	(begin
;; 	  ;; (mutex-lock! *send-mutex*) ;; DOESN'T SEEM TO HELP
;; 	  (let-values (((inp oup)(tcp-connect host-port)))
;; 	    (let ((res (if (and inp oup)
;; 			   (begin
;; 			     (serialize dat oup)
;; 			     (close-output-port oup)
;; 			     (deserialize inp)
;; 			     )
;; 			   (begin
;; 			     (print "ERROR: send called but no receiver has been setup. Please call setup first!")
;; 			     #f))))
;; 	      (close-input-port inp)
;; 	      ;; (mutex-unlock! *send-mutex*) ;; DOESN'T SEEM TO HELP
;; 	      res)))))))) ;; res will always be 'ack unless return-method is direct
;; 
;; (define (send-via-polling uconn host-port cmd data)
;;   (let* ((qrykey (make-cookie uconn))
;; 	 (sres   (send uconn host-port qrykey cmd data)))
;;     (case sres
;;       ((ack)
;;        (let loop ((start-time (current-milliseconds)))
;; 	 (if (> (current-milliseconds)(+ start-time 10000)) ;; ten seconds timeout
;; 	     (begin
;; 	       (print "ULEX ERROR: timed out waiting for response from "host-port", "cmd" "data)
;; 	       #f)
;; 	     (let* ((result (hash-table-ref/default (udat-mboxes uconn) qrykey #f))) ;; NOTE: we are re-using mboxes hash
;; 	       (if result ;; result is '(status . result-data) or #f for nothing yet
;; 		   (begin
;; 		     (hash-table-delete! (udat-mboxes uconn) qrykey)
;; 		     (cdr result))
;; 		   (begin
;; 		     (thread-sleep! 0.01)
;; 		     (loop start-time)))))))
;;       (else
;;        (print "ULEX ERROR: Communication failed? sres="sres)
;;        #f))))
;; 
;; (define (send-via-mailbox uconn host-port cmd data)
;;   (let* ((cmbox     (get-cmbox uconn)) ;; would it be better to keep a stack of mboxes to reuse?
;; 	 (qrykey    (car cmbox))
;; 	 (mbox      (cdr cmbox))
;; 	 (mbox-time (current-milliseconds))
;; 	 (sres      (send uconn host-port qrykey cmd data))) ;; short res
;;     (if (eq? sres 'ack)
;; 	(let* ((mbox-timeout-secs    120 #;(if (eq? 'primordial (thread-name (current-thread)))
;; 				     #f
;; 				     120)) ;; timeout)
;; 	       (mbox-timeout-result 'MBOX_TIMEOUT)
;; 	       (res                  (mailbox-receive! mbox mbox-timeout-secs mbox-timeout-result))
;; 	       (mbox-receive-time    (current-milliseconds)))
;; 	  ;; (put-cmbox uconn cmbox) ;; reuse mbox and cookie. is it worth it?
;; 	  (hash-table-delete! (udat-mboxes uconn) qrykey)
;; 	  (if (eq? res 'MBOX_TIMEOUT)
;; 	      (begin
;; 		(print "WARNING: mbox timed out for query "cmd", with data "data
;; 		       ", waiting for response from "host-port".")
;; 
;; 		;; here it might make sense to clean up connection records and force clean start?
;; 		;; NO. The progam using ulex needs to do the reset. Right thing here is exception
;; 		
;; 		#f)  ;; convert to raising exception?
;; 	      res))
;; 	(begin
;; 	  (print "ERROR: Communication failed? Got "sres)
;; 	  #f))))
;;   
;; ;; send a request to the given host-port and register a mailbox in udata
;; ;; wait for the mailbox data and return it
;; ;;
;; (define (send-receive uconn host-port cmd data)
;;   (let* ((start-time (current-milliseconds))
;; 	 (result     (cond
;; 		      ((member cmd '(ping goodbye)) ;; these are immediate
;; 		       (send uconn host-port 'ping cmd data))
;; 		      ((eq? (work-method) 'direct)
;; 		       ;; the result from send will be the actual result, not an 'ack
;; 		       (send uconn host-port 'direct cmd data))
;; 		      (else
;; 		       (case (return-method)
;; 			 ((polling)
;; 			  (send-via-polling uconn host-port cmd data))
;; 			 ((mailbox) 
;; 			  (send-via-mailbox uconn host-port cmd data))
;; 			 (else
;; 			  (print "ULEX ERROR: unrecognised return-method "(return-method)".")
;; 			  #f)))))
;; 	 (duration    (- (current-milliseconds) start-time)))
;;     ;; this is ONLY for development and debugging. It will be removed once Ulex is stable.
;;     (if (< 5000 duration)
;; 	(print "ULEX WARNING: round-trip took "(inexact->exact (round (/ duration 1000)))
;; 	       " seconds; "cmd", host-port="host-port", data="data))
;;     result))
;;     
;; 
;; ;;======================================================================
;; ;; responder side
;; ;;======================================================================
;; 
;; ;; take a request, rdat, and if not immediate put it in the work queue
;; ;;
;; ;; Reserved cmds; ack ping goodbye response
;; ;;
;; (define (ulex-handler uconn rdat)
;;   (assert (list? rdat) "FATAL: ulex-handler give rdat as not list")
;;   (match rdat ;;  (string-split controldat)
;;     ((rem-host-port qrykey cmd params);; timedata)
;;      ;; (print "ulex-handler got: "rem-host-port" qrykey: "qrykey" cmd: "cmd" params: "params)
;;      (case cmd
;;        ;; ((ack )(print "Got ack! But why? Should NOT get here.") 'ack)
;;        ((ping)
;; 	;; (print "Got Ping!")
;; 	;; (add-to-work-queue uconn rdat)
;; 	'ack)
;;        ((goodbye)
;; 	;; just clear out references to the caller. NOT COMPLETE
;; 	(add-to-work-queue uconn rdat)
;; 	'ack)
;;        ((response) ;; this is a result from remote processing, send it as mail ...
;; 	(case (return-method)
;; 	  ((polling)
;; 	   (hash-table-set! (udat-mboxes uconn) qrykey (cons 'ok params))
;; 	   'ack)
;; 	  ((mailbox)
;; 	   (let ((mbox (hash-table-ref/default (udat-mboxes uconn) qrykey #f)))
;; 	     (if mbox
;; 		 (begin
;; 		   (mailbox-send! mbox params) ;; params here is our result
;; 		   'ack)
;; 		 (begin
;; 		   (print "ERROR: received result but no associated mbox for cookie "qrykey)
;; 		   'no-mbox-found))))
;; 	  (else (print "ULEX ERROR: unrecognised return-method "(return-method))
;; 		'bad-return-method)))
;;        (else ;; generic request - hand it to the work queue
;; 	(add-to-work-queue uconn rdat)
;; 	'ack)))
;;     (else
;;      (print "ULEX ERROR: bad rdat "rdat)
;;      'bad-rdat)))
;; 
;; ;; given an already set up uconn start the cmd-loop
;; ;;
;; (define (ulex-cmd-loop uconn)
;;   (let* ((serv-listener (udat-socket uconn))
;; 	 (listener      (lambda ()
;; 			  (let loop ((state 'start))
;; 			    (let-values (((inp oup)(tcp-accept serv-listener)))
;; 			      ;; (mutex-lock! *send-mutex*) ;; DOESN'T SEEM TO HELP
;; 			      (let* ((rdat  (deserialize inp)) ;; '(my-host-port qrykey cmd params)
;; 				     (resp  (ulex-handler uconn rdat)))
;; 				(serialize resp oup)
;; 				(close-input-port inp)
;; 				(close-output-port oup)
;; 				;; (mutex-unlock! *send-mutex*) ;; DOESN'T SEEM TO HELP
;; 				)
;; 			      (loop state))))))
;;     ;; start N of them
;;     (let loop ((thnum   0)
;; 	       (threads '()))
;;       (if (< thnum 100)
;; 	  (let* ((th (make-thread listener (conc "listener" thnum))))
;; 	    (thread-start! th)
;; 	    (loop (+ thnum 1)
;; 		  (cons th threads)))
;; 	  (map thread-join! threads)))))
;; 
;; ;; add a proc to the cmd list, these are done symetrically (i.e. in all instances)
;; ;; so that the proc can be dereferenced remotely
;; ;;
;; (define (set-work-handler uconn proc)
;;   (udat-work-proc-set! uconn proc))
;; 
;; ;;======================================================================
;; ;; work queues - this is all happening on the listener side
;; ;;======================================================================
;; 
;; ;; rdat is (rem-host-port qrykey cmd params)
;; 					     
;; (define (add-to-work-queue uconn rdat)
;;   #;(queue-add! (udat-work-queue uconn) rdat)
;;   (case (work-method)
;;     ((threads)
;;      (thread-start! (make-thread (lambda ()
;; 				   (do-work uconn rdat))
;; 				 "worker thread")))
;;     ((mailbox)
;;      (mailbox-send! (udat-work-queue uconn) rdat))
;;     ((direct)
;;      (do-work uconn rdat))
;;     (else
;;      (print "ULEX ERROR: work-method "(work-method)" not recognised, using mailbox.")
;;      (mailbox-send! (udat-work-queue uconn) rdat))))
;;      
;; ;; move the logic to return the result somewhere else?
;; ;;
;; (define (do-work uconn rdat)
;;   (let* ((proc (udat-work-proc uconn))) ;; get it each time - conceivebly it could change
;;     ;; put this following into a do-work procedure
;;     (match rdat
;;       ((rem-host-port qrykey cmd params)
;;        (let* ((start-time (current-milliseconds))
;; 	      (result (proc rem-host-port qrykey cmd params))
;; 	      (end-time (current-milliseconds))
;; 	      (run-time (- end-time start-time)))
;; 	 (case (work-method)
;; 	   ((direct) result)
;; 	   (else
;; 	    (print "ULEX: work "cmd", "params" done in "run-time" ms")
;; 	    ;; send 'response as cmd and result as params
;; 	    (send uconn rem-host-port qrykey 'response result) ;; could check for ack
;; 	    (print "ULEX: response sent back to "rem-host-port" in "(- (current-milliseconds) end-time))))))
;;       (MBOX_TIMEOUT 'do-work-timeout)
;;       (else
;;        (print "ERROR: rdat "rdat", did not match rem-host-port qrykey cmd params")))))
;; 
;; ;; NEW APPROACH:
;; ;;   
;; (define (process-work-queue uconn) 
;;   (let ((wqueue (udat-work-queue uconn))
;; 	(proc   (udat-work-proc  uconn))
;; 	(numthr (udat-numthreads uconn)))
;;     (let loop ((thnum    1)
;; 	       (threads '()))
;;       (let ((thlst (cons (make-thread (lambda ()
;; 					(let work-loop ()
;; 					  (let ((rdat (mailbox-receive! wqueue 24000 'MBOX_TIMEOUT)))
;; 					    (do-work uconn rdat))
;; 					  (work-loop)))
;; 				      (conc "work thread " thnum))
;; 			 threads)))
;; 	(if (< thnum numthr)
;; 	    (loop (+ thnum 1)
;; 		  thlst)
;; 	    (begin
;; 	      (print "ULEX: Starting "(length thlst)" worker threads.")
;; 	      (map thread-start! thlst)
;; 	      (print "ULEX: Threads started. Joining all.")
;; 	      (map thread-join! thlst)))))))
;; 
;; ;; below was to enable re-use of connections. This seems non-trivial so for
;; ;; now lets open on each call
;; ;;
;; ;; ;; given host-port get or create peer struct
;; ;; ;;
;; ;; (define (udat-get-peer uconn host-port)
;; ;;   (or (hash-table-ref/default (udat-peers uconn) host-port #f)
;; ;;       ;; no peer, so create pdat and init it
;; ;;       
;; ;;       ;; NEED stack of connections, pop and use; inp, oup,
;; ;;       ;; creation_time (remove and create new if over 24hrs old
;; ;;       ;; 
;; ;;       (let ((pdat (make-pdat host-port: host-port)))
;; ;; 	(hash-table-set! (udat-peers uconn) host-port pdat)
;; ;; 	pdat)))
;; ;; 
;; ;; ;; is pcon alive
;; ;; 
;; ;; ;; given host-port and pdat get a pcon
;; ;; ;;
;; ;; (define (pdat-get-pcon pdat host-port)
;; ;;   (let loop ((conns (pdat-conns pdat)))
;; ;;     (if (null? conns) ;; none? make and return - do NOT add - it will be pushed back on list later
;; ;; 	(init-pcon (make-pcon))
;; ;; 	(let* ((conn (pop conns)))
;; ;; 	  
;; ;; ;; given host-port get a pcon struct
;; ;; ;;
;; ;; (define (udat-get-pcon 
;;       
;; ;;======================================================================
;; ;; misc utils
;; ;;======================================================================
;; 
;; (define (make-cookie uconn)
;;   (let ((newcnum (+ (udat-cnum uconn) 1)))
;;     (udat-cnum-set! uconn newcnum)
;;     (conc (udat-host-port uconn) ":"
;; 	  newcnum)))
;; 
;; ;; cookie/mboxes
;; 
;; ;; we store each mbox with a cookie (<cookie> . <mbox>)
;; ;;
;; (define (get-cmbox uconn)
;;   (if (null? (udat-avail-cmboxes uconn))
;;       (let ((cookie (make-cookie uconn))
;; 	    (mbox   (make-mailbox)))
;; 	(hash-table-set! (udat-mboxes uconn) cookie mbox)
;; 	`(,cookie . ,mbox))
;;       (let ((cmbox (car (udat-avail-cmboxes uconn))))
;; 	(udat-avail-cmboxes-set! uconn (cdr (udat-avail-cmboxes uconn)))
;; 	cmbox)))
;; 
;; (define (put-cmbox uconn cmbox)
;;   (udat-avail-cmboxes-set! uconn (cons cmbox (udat-avail-cmboxes uconn))))
;; 
;; (define (pp-uconn uconn)
;;   (pp (udat->alist uconn)))
;; 
;;   
;; ;;======================================================================
;; ;; network utilities
;; ;;======================================================================
;; 
;; ;; NOTE: Look at address-info egg as alternative to some of this
;; 
;; (define (rate-ip ipaddr)
;;   (regex-case ipaddr
;;     ( "^127\\..*" _ 0 )
;;     ( "^(10\\.0|192\\.168)\\..*" _ 1 )
;;     ( else 2 ) ))
;; 
;; ;; Change this to bias for addresses with a reasonable broadcast value?
;; ;;
;; (define (ip-pref-less? a b)
;;   (> (rate-ip a) (rate-ip b)))
;; 
;; (define (get-my-best-address)
;;   (let ((all-my-addresses (get-all-ips)))
;;     (cond
;;      ((null? all-my-addresses)
;;       (get-host-name))                                          ;; no interfaces?
;;      ((eq? (length all-my-addresses) 1)
;;       (car all-my-addresses))                      ;; only one to choose from, just go with it
;;      (else
;;       (car (sort all-my-addresses ip-pref-less?))))))
;; 
;; (define (get-all-ips-sorted)
;;   (sort (get-all-ips) ip-pref-less?))
;; 
;; (define (get-all-ips)
;;   (map address-info-host
;;        (filter (lambda (x)
;; 		 (equal? (address-info-type x) "tcp"))
;; 	       (address-infos (get-host-name)))))
;; 
)

Added ulex-simple/dbmgr.scm version [71a3e50902].





























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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;;======================================================================
;; Copyright 2022, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(declare (unit dbmgrmod))

(declare (uses ulex))
(declare (uses apimod))
(declare (uses pkts))
(declare (uses commonmod))
(declare (uses dbmod))
(declare (uses mtargs))
(declare (uses portloggermod))
(declare (uses debugprint))

(module dbmgrmod
    *

(import scheme
	chicken.base
	chicken.condition
	chicken.file
	chicken.format
	chicken.port
	chicken.process
	chicken.process-context
	chicken.process-context.posix
	chicken.sort
	chicken.string
	chicken.tcp
	chicken.time
	
	(prefix sqlite3 sqlite3:)
	matchable
	md5
	message-digest
	regex
	s11n
	srfi-1
	srfi-18
	srfi-69
	system-information
	typed-records
	
	pkts
	ulex

	commonmod
	apimod
	dbmod
	debugprint
	(prefix mtargs args:)
	portloggermod
	)

;; Configurations for server
(tcp-buffer-size 2048)
;; (max-connections 2048) 

;; info about me as a listener and my connections to db servers
;; stored (for now) in *db-serv-info*
;;
(defstruct servdat
  (host #f)
  (port #f)
  (uuid #f)
  (dbfile #f)
  (uconn   #f) ;; this is the listener for this process
  (mode    #f)
  (status 'starting)
  (trynum 0) ;; count the number of ports we've tried
  (conns  (make-hash-table)) ;; apath/dbname => conndat
  ) 

(define *db-serv-info* #f)

(serializing-method 'complex) ;; write, s11n, complex

(define (servdat->url sdat)
  (conc (servdat-host sdat)":"(servdat-port sdat)))

;; db servers contact info
;;
(defstruct conndat
  (apath    #f)
  (dbname   #f)
  (fullname #f)
  (hostport #f)
  (ipaddr   #f)
  (port     #f)
  (srvpkt   #f)
  (srvkey   #f)
  (lastmsg  0)
  (expires  0))

(define *srvpktspec*
  `((server (host    . h)
	    (port    . p)
	    (servkey . k)
	    (pid     . i)
	    (ipaddr  . a)
	    (dbpath  . d))))

;;======================================================================
;;  S U P P O R T   F U N C T I O N S
;;======================================================================

;; set up the api proc, seems like there should be a better place for this?
;;
;; IS THIS NEEDED ANYMORE? TODO - REMOVE IF POSSIBLE
;;
;; (define api-proc (make-parameter conc))
;; (api-proc api:execute-requests)

;; do we have a connection to apath dbname and
;; is it not expired? then return it
;;
;; else setup a connection
;;
;; if that fails, return '(#f "some reason") ;; NB// convert to raising an exception
;;
(define (rmt:get-conn remdat apath dbname)
  (let* ((fullname (db:dbname->path apath dbname)))
    (hash-table-ref/default (servdat-conns remdat) fullname #f)))

(define (rmt:drop-conn remdat apath dbname)
  (let* ((fullname (db:dbname->path apath dbname)))
    (hash-table-delete! (servdat-conns remdat) fullname)))
  
(define (rmt:find-main-server uconn apath dbname)
  (let* ((pktsdir     (get-pkts-dir apath))
	 (all-srvpkts (get-all-server-pkts pktsdir *srvpktspec*))
	 (viable-srvs (get-viable-servers all-srvpkts dbname)))
    (get-the-server uconn apath viable-srvs)))


(define *connstart-mutex* (make-mutex))
(define *last-main-start* 0)

;; looks for a connection to main, returns if have and not exired
;; creates new otherwise
;; 
;; connections for other servers happens by requesting from main
;;
;; TODO: This is unnecessarily re-creating the record in the hash table
;;
(define (rmt:open-main-connection remdat apath)
  (let* ((fullpath (db:dbname->path apath ".db/main.db"))
	 (conns    (servdat-conns remdat))
	 (conn     (rmt:get-conn remdat apath ".db/main.db")) ;; (hash-table-ref/default conns fullpath #f)) ;; TODO - create call for this
	 (myconn   (servdat-uconn remdat)))
    (cond
     ((not myconn)
      (servdat-uconn-set! remdat (make-udat))
      (rmt:open-main-connection remdat apath))
     ((and conn                                             ;; conn is NOT a socket, just saying ...
	   (< (current-seconds) (conndat-expires conn)))
      #t) ;; we are current and good to go - we'll deal elsewhere with a server that was killed or died 
     ((and conn
	   (>= (current-seconds)(conndat-expires conn)))
      (debug:print-info 0 *default-log-port* "connection to "fullpath" server expired. Reconnecting.")
      (rmt:drop-conn remdat apath ".db/main.db") ;;
      (rmt:open-main-connection remdat apath))
     (else
      ;; Below we will find or create and connect to main
      (debug:print-info 0 *default-log-port* "rmt:open-main-connection - starting from scratch")
      (let* ((dbname         (db:run-id->dbname #f))
	     (the-srv        (rmt:find-main-server myconn apath dbname))
	     (start-main-srv (lambda () ;; call IF there is no the-srv found
			       (mutex-lock! *connstart-mutex*)
			       (if (> (- (current-seconds) *last-main-start*) 5) ;; at least four seconds since last attempt to start main server
				   (begin
				     (api:run-server-process apath dbname)
				     (set! *last-main-start* (current-seconds))
				     (thread-sleep! 1))
				   (thread-sleep! 0.25))
			       (mutex-unlock! *connstart-mutex*)
			       (rmt:open-main-connection remdat apath) ;; TODO: Add limit to number of tries
			       )))
	(if (not the-srv) ;; have server, try connecting to it
	    (start-main-srv)
	    (let* ((srv-addr (server-address the-srv)) ;; need serv
		   (ipaddr   (alist-ref 'ipaddr  the-srv))
		   (port     (alist-ref 'port    the-srv))
		   (srvkey   (alist-ref 'servkey the-srv))
		   (fullpath (db:dbname->path apath dbname))
		   
		   (new-the-srv (make-conndat
				 apath:   apath
				 dbname:  dbname
				 fullname: fullpath
				 hostport: srv-addr
				 ;; socket: (open-nn-connection srv-addr)  - TODO - open ulex connection?
				 ipaddr: ipaddr
				 port: port
				 srvpkt: the-srv
				 srvkey: srvkey ;; generated by rmt:get-signature on the server side
				 lastmsg: (current-seconds)
				 expires: (+ (current-seconds)
					     (server:expiration-timeout)
					     -2) ;; this needs to be gathered during the ping
				 )))
	      (hash-table-set! conns fullpath new-the-srv)))
	#t)))))

;; NB// sinfo is a servdat struct
;;
(define (rmt:general-open-connection sinfo apath dbname #!key (num-tries 5))
  (assert (not (equal? dbname ".db/main.db")) "ERROR: general-open-connection should never be called with main as the db")
  (let* ((mdbname  ".db/main.db") ;; (db:run-id->dbname #f)) TODO: put this back to the lookup when stable
	 (fullname (db:dbname->path apath dbname))
	 (conns    (servdat-conns sinfo))
	 (mconn    (rmt:get-conn sinfo apath ".db/main.db"))
	 (dconn    (rmt:get-conn sinfo apath dbname)))
    #;(if (and mconn
	     (not (debug:print-logger)))
	(begin
	  (debug:print-info 0 *default-log-port* "Turning on logging to main, look in logs dir for main log.")
	  (debug:print-logger rmt:log-to-main)))
    (cond
     ((and mconn
	   dconn
	   (< (current-seconds)(conndat-expires dconn)))
      #t) ;; good to go
     ((not mconn) ;; no channel open to main? open it...
      (rmt:open-main-connection sinfo apath)
      (rmt:general-open-connection sinfo apath dbname num-tries: (- num-tries 1)))
     ((not dconn)                 ;; no channel open to dbname?     
      (let* ((res (rmt:send-receive-real sinfo apath mdbname 'get-server `(,apath ,dbname))))
	(case res
	  ((server-started)
	   (if (> num-tries 0)
	       (begin
		 (thread-sleep! 2)
		 (rmt:general-open-connection sinfo apath dbname num-tries: (- num-tries 1)))
	       (begin
		 (debug:print-error 0 *default-log-port* "Failed to start servers needed or open channel to "apath", "dbname)
		 (exit 1))))
	  (else
	   (if (list? res) ;; server has been registered and the info was returned. pass it on.
	       (begin ;;  ("192.168.0.9" 53817
		      ;;  "5e34239f48e8973b3813221e54701a01" "24310"
		      ;;  "192.168.0.9"
		      ;;  "/home/matt/data/megatest/tests/simplerun"
		 ;;  ".db/1.db")
		 (match
		  res
		  ((host port servkey pid ipaddr apath dbname)
		   (debug:print-info 0 *default-log-port* "got "res)
		   (hash-table-set! conns
				    fullname
				    (make-conndat
				     apath: apath
				     dbname: dbname
				     hostport: (conc host":"port)
				     ;; socket: (open-nn-connection (conc host":"port)) ;; TODO - open ulex connection?
				     ipaddr: ipaddr
				     port: port
				     srvkey: servkey
				     lastmsg: (current-seconds)
				     expires: (+ (current-seconds)
						 (server:expiration-timeout)
						 -2))))
		  (else
		   (debug:print-info 0 *default-log-port* "return data from starting server did not match host port servkey pid ipaddr apath dbname " res)))
		 res)
	       (begin
		 (debug:print-info 0 *default-log-port* "Unexpected result: " res)
		 res)))))))
    #t))

;;======================================================================

;; FOR DEBUGGING SET TO #t
;; (define *localmode* #t)
(define *localmode* #f)
(define *dbstruct* (make-dbr:dbstruct))

;; Defaults to current area
;;
(define (rmt:send-receive-attempted-consolidation cmd rid params #!key (attemptnum 1)(area-dat #f))
  (let* ((apath      *toppath*)
	 (sinfo      *db-serv-info*)
	 (dbname     (db:run-id->dbname rid)))
    (if (not *db-serv-info*)
	(begin
	  (set! *db-serv-info* (make-servdat))
	  (set! sinfo *db-serv-info*)))
    (rmt:open-main-connection sinfo apath)
    (if rid (rmt:general-open-connection sinfo apath dbname))
    ;; (if (not (member cmd '(log-to-main)))
    ;;     (debug:print-info 0 *default-log-port* "rmt:send-receive "cmd" params="params))
    (let* ((cdat (rmt:get-conn sinfo apath dbname)))
      (assert cdat "FATAL: rmt:send-receive-real called without the needed channels opened")
      (let* ((uconn    (servdat-uconn sinfo)) ;; get the interface to ulex
	     ;; then send-receive using the ulex layer to host-port stored in cdat
	     (res      (send-receive uconn (conndat-hostport cdat) cmd params)))
	(conndat-expires-set! cdat (+ (current-seconds)
				      (server:expiration-timeout)
				      -2)) ;; two second margin for network time misalignments etc.
	res))))

; Defaults to current area
;;
(define (rmt:send-receive cmd rid params #!key (attemptnum 1)(area-dat #f))
  (let* ((apath      *toppath*)
         (sinfo      *db-serv-info*)
         (dbname     (db:run-id->dbname rid)))
    (if (not *db-serv-info*) ;; confirm this is really needed
	(begin
	  (set! *db-serv-info* (make-servdat))
	  (set! sinfo *db-serv-info*)))
    (rmt:open-main-connection sinfo apath)
    (if rid (rmt:general-open-connection sinfo apath dbname))
    #;(if (not (member cmd '(log-to-main)))
    (debug:print-info 0 *default-log-port* "rmt:send-receive "cmd" params="params))
    (rmt:send-receive-real sinfo apath dbname cmd params)))

;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; sometime in the future
;;
(define (rmt:send-receive-real sinfo apath dbname cmd params)
  (let* ((cdat (rmt:get-conn sinfo apath dbname)))
    (assert cdat "FATAL: rmt:send-receive-real called without the needed channels opened")
    (let* ((uconn    (servdat-uconn sinfo)) ;; get the interface to ulex
           ;; then send-receive using the ulex layer to host-port stored in cdat
           (res      (send-receive uconn (conndat-hostport cdat) cmd params)))
      ;; since we accessed the server we can bump the expires time up
      (conndat-expires-set! cdat (+ (current-seconds)
                                    (server:expiration-timeout)
                                    -2)) ;; two second margin for network time misalignments etc.
      res)))

;
;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; sometime in the future.
;;
;; Purpose - call the main.db server and request a server be started
;; for the given area path and dbname
;;

(define (rmt:print-db-stats)
  (let ((fmtstr "~40a~7-d~9-d~20,2-f")) ;; "~20,2-f"
    (debug:print 18 *default-log-port* "DB Stats, "(seconds->year-week/day-time (current-seconds))"\n=====================")
    (debug:print 18 *default-log-port* (format #f "~40a~8a~10a~10a" "Cmd" "Count" "TotTime" "Avg"))
    (for-each (lambda (cmd)
		(let ((cmd-dat (hash-table-ref *db-stats* cmd)))
		  (debug:print 18 *default-log-port* (format #f fmtstr cmd (vector-ref cmd-dat 0) (vector-ref cmd-dat 1) (/ (vector-ref cmd-dat 1)(vector-ref cmd-dat 0))))))
	      (sort (hash-table-keys *db-stats*)
		    (lambda (a b)
		      (> (vector-ref (hash-table-ref *db-stats* a) 0)
			 (vector-ref (hash-table-ref *db-stats* b) 0)))))))

(define (rmt:get-max-query-average run-id)
  (mutex-lock! *db-stats-mutex*)
  (let* ((runkey (conc "run-id=" run-id " "))
	 (cmds   (filter (lambda (x)
			   (substring-index runkey x))
			 (hash-table-keys *db-stats*)))
	 (res    (if (null? cmds)
		     (cons 'none 0)
		     (let loop ((cmd (car cmds))
				(tal (cdr cmds))
				(max-cmd (car cmds))
				(res 0))
		       (let* ((cmd-dat (hash-table-ref *db-stats* cmd))
			      (tot     (vector-ref cmd-dat 0))
			      (curravg (/ (vector-ref cmd-dat 1) (vector-ref cmd-dat 0))) ;; count is never zero by construction
			      (currmax (max res curravg))
			      (newmax-cmd (if (> curravg res) cmd max-cmd)))
			 (if (null? tal)
			     (if (> tot 10)
				 (cons newmax-cmd currmax)
				 (cons 'none 0))
			     (loop (car tal)(cdr tal) newmax-cmd currmax)))))))
    (mutex-unlock! *db-stats-mutex*)
    res))

;; host and port are used to ensure we are remove proper records
(define (rmt:server-shutdown host port)
  (let ((dbfile   (servdat-dbfile *db-serv-info*)))
    (debug:print-info 0 *default-log-port* "dbfile is "dbfile)
    (if dbfile
	(let* ((am-server  (args:get-arg "-server"))
	       (dbfile     (args:get-arg "-db"))
	       (apath      *toppath*)
	       #;(sinfo     *remotedat*)) ;; foundation for future fix
	  (if *dbstruct-db*
	      (let* ((dbdat      (db:get-dbdat *dbstruct-db* apath dbfile))
		     (db         (dbr:dbdat-db dbdat))
		     (inmem      (dbr:dbdat-db dbdat))   ;; WRONG
		     )
		;; do a final sync here
		(debug:print-info 0 *default-log-port* "Doing final sync for "apath" "dbfile" at "(current-seconds))
		(db:sync-inmem->disk *dbstruct-db* apath dbfile force-sync: #t)
		;; let's finalize here
		(debug:print-info 0 *default-log-port* "Finalizing db and inmem")
		(if (sqlite3:database? db)
		    (sqlite3:finalize! db)
		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, db is not a database, not finalizing..."))
		(if (sqlite3:database? inmem)
		    (sqlite3:finalize! inmem)
		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, inmem is not a database, not finalizing..."))
		(debug:print-info 0 *default-log-port* "Finalizing db and inmem complete"))
	      (debug:print-info 0 *default-log-port* "Db was never opened, no cleanup to do."))
	  (if (not am-server)
	      (debug:print-info 0 *default-log-port* "I am not a server, should NOT get here!")
	      (if (string-match ".*/main.db$" dbfile)
		  (let ((pkt-file (conc (get-pkts-dir *toppath*)
					"/" (servdat-uuid *db-serv-info*)
					".pkt")))
		    (debug:print-info 0 *default-log-port* "removing pkt "pkt-file)
		    (delete-file* pkt-file)
		    (debug:print-info 0 *default-log-port* "Releasing lock (if any) for "dbfile ", host "host", port "port)
		    (db:with-lock-db
		     (servdat-dbfile *db-serv-info*)
		     (lambda (dbh dbfile)
		       (db:release-lock dbh dbfile host port)))) ;; I'm not the server - should not have a lock to remove
		  (let* ((sdat *db-serv-info*) ;; we have a run-id server
			 (host (servdat-host sdat))
			 (port (servdat-port sdat))
			 (uuid (servdat-uuid sdat))
			 (res  (rmt:deregister-server *db-serv-info* *toppath* host port uuid dbfile)))
		    (debug:print-info 0 *default-log-port* "deregistered-server, res="res)
		    (debug:print-info 0 *default-log-port* "deregistering server "host":"port" with uuid "uuid)
		    )))))))


(define (common:run-sync?)
    ;; (and (common:on-homehost?)
  (args:get-arg "-server"))

(define *rmt:run-mutex* (make-mutex))
(define *rmt:run-flag* #f)

(define (listener-running?)
  (and *db-serv-info*
       (servdat-uconn *db-serv-info*)))

;; Main entry point to start a server. was start-server
(define (rmt:run hostn)
  (mutex-lock! *rmt:run-mutex*)
  (if *rmt:run-flag*
      (begin
	(debug:print-warn 0 *default-log-port* "rmt:run already running.")
	(mutex-unlock! *rmt:run-mutex*))
      (begin
	(set! *rmt:run-flag* #t)
	(mutex-unlock! *rmt:run-mutex*)
	;;  ;; Configurations for server
	;;  (tcp-buffer-size 2048)
	;;  (max-connections 2048) 
	(debug:print 2 *default-log-port* "PID: "(current-process-id)". Attempting to start the server ...")
	(if (listener-running?)
	    (let* ((uconn (servdat-uconn *db-serv-info*)))
	      (wait-and-close uconn))
	    (let* ((port            (portlogger:open-run-close portlogger:find-port))
		   (handler-proc    (lambda (rem-host-port qrykey cmd params) ;;
				      (set! *db-last-access* (current-seconds))
				      (assert (list? params) "FATAL: handler called with non-list params")
				      (assert (args:get-arg "-server") "FATAL: handler called on non-server side. cmd="cmd", params="params)
				      (debug:print 0 *default-log-port* "handler call: "cmd", params="params)
				      (api:execute-requests *dbstruct-db* cmd params))))
	      ;; (api:process-request *dbstuct-db* 
	      (if (not *db-serv-info*)
		  (set! *db-serv-info* (make-servdat host: hostn port: port)))
	      (let* ((uconn (run-listener handler-proc port))
		     (rport (udat-port uconn))) ;; the real port
		(servdat-host-set! *db-serv-info* hostn)
		(servdat-port-set! *db-serv-info* rport)
		(servdat-uconn-set! *db-serv-info* uconn)
		(wait-and-close uconn)
		(db:print-current-query-stats)
		)))
	(let* ((host (servdat-host *db-serv-info*))
	       (port (servdat-port *db-serv-info*))
	       (mode (or (servdat-mode *db-serv-info*)
			 "non-db")))
	  ;; server exit stuff here
	  ;; (rmt:server-shutdown host port) - always do in on-exit
	  ;; (portlogger:open-run-close portlogger:set-port port "released") ;; moved to on-exit 
	  (debug:print-info 0 *default-log-port* "Server "host":"port" mode "mode"shutdown complete. Exiting")
	  ))))

;;======================================================================
;; S E R V E R   U T I L I T I E S 
;;======================================================================


;;======================================================================
;; NEW SERVER METHOD
;;======================================================================

;; only use for main.db - need to re-write some of this :(
;;
(define (get-lock-db sdat dbfile host port)
  (assert host "FATAL: get-lock-db called with host not set.")
  (assert port "FATAL: get-lock-db called with port not set.")
  (let* ((dbh (db:open-run-db dbfile db:initialize-db)) ;; open-run-db creates a standard db with schema used by all situations
	 (res (db:get-iam-server-lock dbh dbfile host port))
	 (uconn (servdat-uconn sdat)))
    ;; res => list then already locked, check server is responsive
    ;;     => #t then sucessfully got the lock
    ;;     => #f reserved for future use as to indicate something went wrong
    (match res
      ((owner_pid owner_host owner_port event_time)
       (if (server-ready? uconn (conc owner_host":"owner_port) "abc")
	   #f      ;; locked by someone else
	   (begin  ;; locked by someone dead and gone
	     (debug:print 0 *default-log-port* "WARNING: stale lock - have to steal it. This may fail.")
	     (db:steal-lock-db dbh dbfile port))))
      (#t  #t) ;; placeholder so that we don't touch res if it is #t
      (else (set! res #f)))
    (sqlite3:finalize! dbh)
    res))


(define (register-server pkts-dir pkt-spec host port servkey ipaddr dbpath)
  (let* ((pkt-dat `((host    . ,host)
		    (port    . ,port)
		    (servkey . ,servkey)
		    (pid     . ,(current-process-id))
		    (ipaddr  . ,ipaddr)
		    (dbpath  . ,dbpath)))
	 (uuid    (write-alist->pkt
		   pkts-dir
		   pkt-dat
		   pktspec: pkt-spec
		   ptype: 'server)))
    (debug:print 0 *default-log-port* "Server on "host":"port" registered in pkt "uuid)
    uuid))

(define (get-pkts-dir #!optional (apath #f))
  (let* ((effective-toppath (or *toppath* apath)))
    (assert effective-toppath
	    "ERROR: get-pkts-dir called without *toppath* set. Exiting.")
    (let* ((pdir (conc effective-toppath "/.meta/srvpkts")))
      (if (file-exists? pdir)
	  pdir
	  (begin
	    (handle-exceptions ;; this exception handler should NOT be needed but ...
		exn
		pdir
	      (create-directory pdir #t))
	    pdir)))))

;; given a pkts dir read 
;;
(define (get-all-server-pkts pktsdir-in pktspec)
  (let* ((pktsdir  (if (file-exists? pktsdir-in)
		       pktsdir-in
		       (begin
			 (create-directory pktsdir-in #t)
			 pktsdir-in)))
	 (all-pkt-files (glob (conc pktsdir "/*.pkt"))))
    (map (lambda (pkt-file)
	   (read-pkt->alist pkt-file pktspec: pktspec))
	 all-pkt-files)))

(define (server-address srv-pkt)
  (conc (alist-ref 'host srv-pkt) ":"
	(alist-ref 'port srv-pkt)))
	
(define (server-ready? uconn host-port key) ;; server-address is host:port
  (let* ((params `((cmd . ping)(key . ,key)))
	 (data `((cmd . ping)
		 (key . ,key)
		 (params . ,params))) ;; I don't get it.
	 (res  (send-receive uconn host-port 'ping data)))
    (if (eq? res 'ping-ack) ;; yep, likely it is who we want on the other end
	res
	#f)))
;; (begin (debug:print-info 0 *default-log-port* "server-ready? => "res) #f))))

; from the pkts return servers associated with dbpath
;; NOTE: Only one can be alive - have to check on each
;;       in the list of pkts returned
;;
(define (get-viable-servers serv-pkts dbpath)
  (let loop ((tail serv-pkts)
	     (res  '()))
    (if (null? tail)
	res ;; NOTE: sort by age so oldest is considered first
	(let* ((spkt (car tail)))
	  (loop (cdr tail)
		(if (equal? dbpath (alist-ref 'dbpath spkt))
		    (cons spkt res)
		    res))))))

(define (remove-pkts-if-not-alive uconn serv-pkts)
  (filter (lambda (pkt)
	    (let* ((host (alist-ref 'host pkt))
		   (port (alist-ref 'port pkt))
		   (host-port (conc host":"port))
		   (key  (alist-ref 'servkey  pkt))
		   (pktz (alist-ref 'Z        pkt))
		   (res  (server-ready? uconn host-port key)))
	      (if res
		  res
		  (let* ((pktsdir (get-pkts-dir *toppath*))
			 (pktpath (conc pktsdir"/"pktz".pkt")))
		    (debug:print 0 *default-log-port* "WARNING: pkt with no server "pktpath)
		    (delete-file* pktpath)
		    #f))))
	  serv-pkts))

;; from viable servers get one that is alive and ready
;;
(define (get-the-server uconn apath serv-pkts)
  (let loop ((tail serv-pkts))
    (if (null? tail)
	#f
	(let* ((spkt  (car tail))
	       (host  (alist-ref 'ipaddr spkt))
	       (port  (alist-ref 'port spkt))
	       (host-port (conc host":"port))
	       (dbpth (alist-ref 'dbpath spkt))
	       (srvkey (alist-ref 'Z spkt)) ;; (alist-ref 'srvkey spkt))
	       (addr  (server-address spkt)))
	  (if (server-ready? uconn host-port srvkey)
	      spkt
	      (loop (cdr tail)))))))

;; am I the "first" in line server? I.e. my D card is smallest
;; use Z card as tie breaker
;;
(define (get-best-candidate serv-pkts dbpath)
  (if (null? serv-pkts)
      #f
      (let loop ((tail serv-pkts)
		 (best  (car serv-pkts)))
	(if (null? tail)
	    best
	    (let* ((candidate (car tail))
		   (candidate-bd (string->number (alist-ref 'D candidate)))
		   (best-bd      (string->number (alist-ref 'D best)))
		   ;; bigger number is younger
		   (candidate-z  (alist-ref 'Z candidate))
		   (best-z       (alist-ref 'Z best))
		   (new-best     (cond
				  ((> best-bd candidate-bd) ;; best is younger than candidate
				   candidate)
				  ((< best-bd candidate-bd) ;; candidate is younger than best
				   best)
				  (else
				   (if (string>=? best-z candidate-z)
				       best
				       candidate))))) ;; use Z card as tie breaker
	      (if (null? tail)
		  new-best
		  (loop (cdr tail) new-best)))))))
	  
;;======================================================================
;; END NEW SERVER METHOD
;;======================================================================

;; sdat must be defined and the host and port set and the same as previous
;;
(define (host-port-is-stable? sdat old-host old-port)
  (and sdat
       (let ((new-host (servdat-host sdat))
	     (new-port (servdat-port sdat)))
	 (and new-host
	      new-port
	      (equal? new-host old-host)
	      (equal? new-port old-port)))))

;; if .db/main.db check the pkts
;; 
(define (rmt:wait-for-server pkts-dir db-file server-key)
  (let* ((sdat *db-serv-info*))
    (let loop ((start-time (current-milliseconds))
	       (changed    #t)
	       (last-sdat  "not this")
	       (last-host  #f)
	       (last-port  #f))
      (begin ;; let ((sdat #f))
	(thread-sleep! 0.01)
	(debug:print-info 0 *default-log-port* "Waiting for server alive signature")
	(mutex-lock! *heartbeat-mutex*)
	(set! sdat *db-serv-info*)
	(mutex-unlock! *heartbeat-mutex*)
	(if (and sdat
		 (not changed)
		 (>= (- (current-milliseconds) start-time) 100))
	    (let* ((uconn (servdat-uconn sdat)))
	      (servdat-status-set! sdat 'iface-stable)
	      (debug:print-info 0 *default-log-port* "Received server alive signature, now attempting to lock in server")
	      ;; create a server pkt in *toppath*/.meta/srvpkts
	      
	      ;; TODO:
	      ;;   1. change sdat to stuct
	      ;;   2. add uuid to struct
	      ;;   3. update uuid in sdat here
	      ;;
	      (servdat-uuid-set! sdat
				 (register-server
				  pkts-dir *srvpktspec*
				  (get-host-name)
				  (servdat-port sdat) server-key
				  (servdat-host sdat) db-file))
	      ;; (set! *my-signature* (servdat-uuid sdat)) ;; replace with Z, no, stick with proper key
	      ;; now read pkts and see if we are a contender
	      (let* ((all-pkts     (get-all-server-pkts pkts-dir *srvpktspec*))
		     (viables      (get-viable-servers all-pkts db-file))
		     (alive        (remove-pkts-if-not-alive uconn viables))
		     (best-srv     (get-best-candidate alive db-file))
		     (best-srv-key (if best-srv (alist-ref 'servkey best-srv) #f))
		     (i-am-srv     (equal? best-srv-key server-key))
		     (delete-pkt   (lambda ()
				     (let* ((pktfile (conc (get-pkts-dir *toppath*)
							 "/" (servdat-uuid *db-serv-info*)
							 ".pkt")))
				       (debug:print-info 0 *default-log-port* "Attempting to remove bogus pkt file "pktfile)
				       (delete-file* pktfile))))) ;; remove immediately instead of waiting for on-exit
		(debug:print 0 *default-log-port* "best-srv-key: "best-srv-key", server-key: "server-key", i-am-srv: "i-am-srv)
		;; am I the best-srv, compare server-keys to know
		(if i-am-srv
		    (if (get-lock-db sdat db-file (servdat-host sdat)(servdat-port sdat)) ;; (db:get-iam-server-lock *dbstruct-db* *toppath* run-id)
			(begin
			  (debug:print-info 0 *default-log-port* "I'm the server!")
			  (servdat-dbfile-set! sdat db-file)
			  (servdat-status-set! sdat 'db-locked))
			(begin
			  (debug:print-info 0 *default-log-port* "I'm not the server, exiting.")
			  (bdat-time-to-exit-set! *bdat* #t)
			  (delete-pkt)
			  (thread-sleep! 0.2)
			  (exit)))
		    (begin
		      (debug:print-info 0 *default-log-port*
				   "Keys do not match "best-srv-key", "server-key", exiting.")
		      (bdat-time-to-exit-set! *bdat* #t)
		      (delete-pkt)
		      (thread-sleep! 0.2)
		      (exit)))
		sdat))
	    (begin ;; sdat not yet contains server info
	      (debug:print-info 0 *default-log-port* "Still waiting, last-sdat=" last-sdat)
	      (thread-sleep! 0.1)
	      (if (> (- (current-milliseconds) start-time) 120000) ;; been waiting for two minutes
		  (begin
		    (debug:print-error 0 *default-log-port* "transport appears to have died, exiting server")
		    (exit))
		  (loop start-time
			(not (host-port-is-stable? sdat last-host last-port))
			sdat
			(servdat-host sdat)
			(servdat-port sdat)))))))))

(define (rmt:register-server sinfo apath iface port server-key dbname)
  (servdat-conns sinfo) ;; just checking types
  (rmt:open-main-connection sinfo apath) ;; we need a channel to main.db
  (rmt:send-receive-real sinfo apath      ;; params: host port servkey pid ipaddr dbpath
			 (db:run-id->dbname #f)
			 'register-server `(,iface
					    ,port
					    ,server-key
					    ,(current-process-id)
					    ,iface
					    ,apath
					    ,dbname)))

(define (rmt:get-count-servers sinfo apath)
  (servdat-conns sinfo) ;; just checking types
  (rmt:open-main-connection sinfo apath) ;; we need a channel to main.db
  (rmt:send-receive-real sinfo apath      ;; params: host port servkey pid ipaddr dbpath
			 (db:run-id->dbname #f)
			 'get-count-servers `(,apath)))

(define (rmt:get-servers-info apath)
  (rmt:send-receive 'get-servers-info #f `(,apath)))

(define (rmt:deregister-server db-serv-info apath iface port server-key dbname)
  (rmt:open-main-connection db-serv-info apath) ;; we need a channel to main.db
  (rmt:send-receive db-serv-info apath      ;; params: host port servkey pid ipaddr dbpath
                         (db:run-id->dbname #f)
                         'deregister-server `(,iface
                                              ,port
                                              ,server-key
                                              ,(current-process-id)
                                              ,iface
                                              ,apath
                                              ,dbname)))

(define (rmt:wait-for-stable-interface #!optional (num-tries-allowed 100))
  ;; wait until *db-serv-info* stops changing
  (let* ((stime (current-seconds)))
    (let loop ((last-host  #f)
	       (last-port  #f)
	       (tries 0))
      (let* ((curr-host (and *db-serv-info* (servdat-host *db-serv-info*)))
	     (curr-port (and *db-serv-info* (servdat-port *db-serv-info*))))
	;; first we verify port and interface, update *db-serv-info* in need be.
	(cond
	 ((> tries num-tries-allowed)
	  (debug:print 0 *default-log-port* "rmt:keep-running, giving up after trying for several minutes.")
	  (exit 1))
	 ((not *db-serv-info*)
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((or (not last-host)(not last-port))
	  (debug:print 0 *default-log-port* "rmt:keep-running, still no interface, tries="tries)
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((or (not (equal? last-host curr-host))
	      (not (equal? last-port curr-port)))
	  (debug:print-info 0 *default-log-port* "WARNING: interface changed, refreshing iface and port info")
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((< (- (current-seconds) stime) 1) ;; keep up the looping until at least 3 seconds have passed
	  (thread-sleep! 0.5)
	  (loop curr-host curr-port (+ tries 1)))
	 (else
	  (rmt:get-signature) ;; sets *my-signature* as side effect
	  (servdat-status-set! *db-serv-info* 'interface-stable)
	  (debug:print 0 *default-log-port*
		       "SERVER STARTED: " curr-host
		       ":" curr-port
		       " AT " (current-seconds) " server signature: " *my-signature*
		       " with "(servdat-trynum *db-serv-info*)" port changes")
	  (flush-output *default-log-port*)
	  #t))))))

;; run rmt:keep-running in a parallel thread to monitor that the db is being 
;; used and to shutdown after sometime if it is not.
;;
(define (rmt:keep-running dbname) 
  ;; if none running or if > 20 seconds since 
  ;; server last used then start shutdown
  ;; This thread waits for the server to come alive
  (debug:print-info 0 *default-log-port* "Starting the sync-back, keep alive thread in server")

  (let* ((sinfo             *db-serv-info*)
	 (server-start-time (current-seconds))
	 (pkts-dir          (get-pkts-dir))
	 (server-key        (rmt:get-signature)) ;; This servers key
	 (is-main           (equal? (args:get-arg "-db") ".db/main.db"))
	 (last-access       0)
	 (server-timeout    (server:expiration-timeout))
	 (shutdown-server-sequence (lambda (host port)
				     (set! *unclean-shutdown* #f) ;; Should not be needed anymore
				     (debug:print-info 0 *default-log-port* "Starting to shutdown the server. pid="(current-process-id))
				     ;; (rmt:server-shutdown host port) -- called in on-exit
				     ;; (portlogger:open-run-close portlogger:set-port port "released") called in on-exit
				     (exit)))
	 (timed-out?        (lambda ()
			      (<= (+ last-access server-timeout)
				  (current-seconds)))))
    (servdat-dbfile-set! *db-serv-info* (args:get-arg "-db"))
    ;; main and run db servers have both got wait logic (could/should merge it)
    (if is-main
	(rmt:wait-for-server pkts-dir dbname server-key)
	(rmt:wait-for-stable-interface))
    ;; this is our forever loop
    (let* ((iface (servdat-host *db-serv-info*))
	   (port  (servdat-port *db-serv-info*))
	   (uconn (servdat-uconn *db-serv-info*)))
      (let loop ((count          0)
		 (bad-sync-count 0)
		 (start-time     (current-milliseconds)))
	(if (and (not is-main)
		 (common:low-noise-print 60 "servdat-status"))
	    (debug:print-info 0 *default-log-port* "servdat-status is " (servdat-status *db-serv-info*)))

	(mutex-lock! *heartbeat-mutex*)
	;; set up the database handle
	(if (not *dbstruct-db*) ;; no db opened yet, open the db and register with main if appropriate
	      (let ((watchdog (bdat-watchdog *bdat*)))
		(debug:print 0 *default-log-port* "SERVER: dbprep")
		(db:setup dbname) ;; sets *dbstruct-db* as side effect
		(servdat-status-set! *db-serv-info* 'db-opened)
		;; IFF I'm not main, call into main and register self
		(if (not is-main)
		    (let ((res (rmt:register-server sinfo
						    *toppath* iface port
						    server-key dbname)))
		      (if res ;; we are the server
			  (servdat-status-set! *db-serv-info* 'have-interface-and-db)
			  ;; now check that the db locker is alive, clear it out if not
			  (let* ((serv-info (rmt:server-info *toppath* dbname)))
			    (match serv-info
				   ((host port servkey pid ipaddr apath dbpath)
				    (if (not (server-ready? uconn (conc host":"port) servkey))
					(begin
					  (debug:print-info 0 *default-log-port* "Server registered but not alive. Removing and trying again.")
					  (rmt:deregister-server sinfo apath host port servkey dbpath) ;; servkey pid ipaddr apath dbpath)
					  (loop (+ count 1) bad-sync-count start-time))))
				   (else
				    (debug:print 0 *default-log-port* "We are not the server for "dbname", exiting. Server info is: "serv-info)
				    (exit)))))))
		(debug:print 0 *default-log-port*
			     "SERVER: running, db "dbname" opened, megatest version: "
			   (common:get-full-version))
	      ))
	
	(db:sync-inmem->disk *dbstruct-db* *toppath* dbname force-sync: #t)
	
	(mutex-unlock! *heartbeat-mutex*)
	
	;; when things go wrong we don't want to be doing the various
	;; queries too often so we strive to run this stuff only every
	;; four seconds or so.
	(let* ((sync-time (- (current-milliseconds) start-time))
	       (rem-time  (quotient (- 4000 sync-time) 1000)))
	  (if (and (<= rem-time 4)
		   (>  rem-time 0))
	      (thread-sleep! rem-time)))
    
	;; Transfer *db-last-access* to last-access to use in checking that we are still alive
	(set! last-access *db-last-access*)
	
	(if (< count 1) ;; 3x3 = 9 secs aprox
	    (loop (+ count 1) bad-sync-count (current-milliseconds)))
	
	(if (common:low-noise-print 60 "dbstats")
	    (begin
	      (debug:print 0 *default-log-port* "Server stats:")
	      (db:print-current-query-stats)))
	(let* ((hrs-since-start  (/ (- (current-seconds) server-start-time) 3600)))
	  (cond
	   ((not *server-run*)
	    (debug:print-info 0 *default-log-port* "*server-run* set to #f. Shutting down.")
	    (shutdown-server-sequence (get-host-name) port))
	   ((timed-out?)
	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
	    (shutdown-server-sequence (get-host-name) port))
	   ((and *server-run*
		 (or (not (timed-out?))
		     (if is-main ;; do not exit if there are other servers (keep main open until all others gone)
			 (> (rmt:get-count-servers sinfo *toppath*) 1)
			 #f)))
	    (if (common:low-noise-print 120 "server continuing")
		(debug:print-info 0 *default-log-port* "Server continuing, seconds since last db access: " (- (current-seconds) last-access)))
	    (loop 0 bad-sync-count (current-milliseconds)))
	   (else
	    (set! *unclean-shutdown* #f)
	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
	    (shutdown-server-sequence (get-host-name) port)
	    #;(debug:print-info 0 *default-log-port* "Sending 'quit to server, received: "
			      (open-send-receive-nn (conc iface":"port)      ;; do this here and not in server-shutdown
						    (sexpr->string 'quit))))))))))

(define (rmt:get-reasonable-hostname)
  (let* ((inhost (or (args:get-arg "-server") "-")))
    (if (equal? inhost "-")
	(get-host-name)
	inhost)))

;; Call this to start the actual server
;;
;; all routes though here end in exit ...
;;
;; This is the point at which servers are started
;;
(define (rmt:server-launch dbname)
  (debug:print-info 0 *default-log-port* "Entered rmt:server-launch")
  (let* ((th2 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server run thread started")
			     (rmt:run (rmt:get-reasonable-hostname)))
			   "Server run"))
	 (th3 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server monitor thread started")
			     (if (args:get-arg "-server")
				 (rmt:keep-running dbname)
				 #;(rmt:wait-for-stable-interface)))
			     "Keep running")))
    (thread-start! th2)
    (thread-sleep! 0.252) ;; give the server time to settle before starting the keep-running monitor.
    (thread-start! th3)
    (set! *didsomething* #t)
    (thread-join! th2)
    (thread-join! th3))
  #f)
	    
;;======================================================================
;;  S E R V E R   -  D I R E C T   C A L L S
;;======================================================================

(define (rmt:kill-server run-id)
  (rmt:send-receive 'kill-server #f (list run-id)))

(define (rmt:start-server run-id)
  (rmt:send-receive 'start-server #f (list run-id)))

(define (rmt:server-info apath dbname)
  (rmt:send-receive 'get-server-info #f (list apath dbname)))


)

Added ulex-simple/ulex.scm version [db661a09b9].







































































































































































































































































































































































































































































































































































































































































































































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;; ulex: Distributed sqlite3 db
;;;
;; Copyright (C) 2018-2021 Matt Welland
;; Redistribution and use in source and binary forms, with or without
;; modification, is permitted.
;;
;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;; ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
;; OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
;; BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
;; USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
;; DAMAGE.

;;======================================================================
;; ABOUT:
;;   See README in the distribution at https://www.kiatoa.com/fossils/ulex
;; NOTES:
;;   Why sql-de-lite and not say, dbi?  - performance mostly, then simplicity.
;;
;;======================================================================

(module ulex
	*
	#;(
     
     ;; NOTE: looking for the handler proc - find the run-listener :)
     
     run-listener     ;; (run-listener handler-proc [port]) => uconn

     ;; NOTE: handler-proc params;
     ;;       (handler-proc rem-host-port qrykey cmd params)

     send-receive     ;; (send-receive uconn host-port cmd data)

     ;; NOTE: cmd can be any plain text symbol except for these;
     ;;         'ping 'ack 'goodbye 'response
     
     set-work-handler ;; (set-work-handler proc)

     wait-and-close   ;; (wait-and-close uconn)

     ulex-listener?
     
     ;; needed to get the interface:port that was automatically found
     udat-port
     udat-host-port
     
     ;; for testing only
     ;; pp-uconn
     
     ;; parameters
     work-method   ;; parameter; 'threads, 'mailbox, 'limited, 'direct
     return-method ;; parameter; 'mailbox, 'polling, 'direct
     )

(import scheme
	chicken.base
	chicken.file
	chicken.io
	chicken.time
	chicken.condition
	chicken.port
	chicken.string
	chicken.sort
	chicken.pretty-print
	chicken.tcp
	
	address-info
	mailbox
	matchable
	;; queues
	regex
	regex-case
	simple-exceptions
	s11n
	srfi-1
	srfi-18
	srfi-4
	srfi-69
	system-information
	;; tcp6
	tcp-server
	typed-records

	md5
	message-digest
	(prefix base64 base64:)
	z3
	)

;; udat struct, used by both caller and callee
;; instantiated as uconn by convention
;;
(defstruct udat
  ;; the listener side
  (port #f)
  (host-port #f) ;; my host:port
  (socket #f)
  ;; the peers
  (peers  (make-hash-table)) ;; host:port->peer
  ;; work handling
  (work-queue (make-mailbox))
  (work-proc  #f)                ;; set by user
  (cnum       0)                 ;; cookie number
  (mboxes     (make-hash-table)) ;; for the replies
  (avail-cmboxes '())            ;; list of (<cookie> . <mbox>) for re-use
  ;; threads
  (numthreads 10)
  (cmd-thread #f)
  (work-queue-thread #f)
  (num-threads-running 0)
  ) 

;;======================================================================
;; serialization
;;   NOTE: I've had problems with read/write and s11n serialize, deserialize
;;         thus the inefficient method here
;;======================================================================

(define serializing-method (make-parameter 'complex))


;; NOTE: Can remove the regex and base64 encoding for zmq
(define (obj->string obj)
  (case (serializing-method)
    ((complex)
     (string-substitute
      (regexp "=") "_"
      (base64:base64-encode 
       (z3:encode-buffer
        (with-output-to-string
          (lambda ()(serialize obj))))) ;; BB: serialize - this is
					;; what causes problems
					;; between different builds of
					;; megatest communicating.
					;; serialize is sensitive to
					;; binary image of mtest.
      #t))
    ((write)(with-output-to-string (lambda ()(write obj))))
    ((s11n) (with-output-to-string (lambda ()(serialize obj))))
    (else obj))) ;; rpc

(define (string->obj msg #!key (transport 'http))
  (case (serializing-method)
    ((complex)
     (handle-exceptions
      exn
      (begin
        (print "ULEX ERROR: cannot translate received data \""msg"\"")
        (print-call-chain (current-error-port))
        msg)
      (with-input-from-string 
          (z3:decode-buffer
           (base64:base64-decode
            (string-substitute 
             (regexp "_") "=" msg #t)))
        (lambda ()(deserialize)))))
    ((write)(with-input-from-string msg (lambda ()(read))))
    ((s11n)(with-input-from-string msg (lambda ()(deserialize))))
    (else msg))) ;; rpc


;;======================================================================
;; listener
;;======================================================================

;; is uconn a ulex connector (listener)
;;
(define (ulex-listener? uconn)
  (udat? uconn))

;; create a tcp listener and return a populated udat struct with
;; my port, address, hostname, pid etc.
;; return #f if fail to find a port to allocate.
;;
;;  if udata-in is #f create the record
;;  if there is already a serv-listener return the udata
;;
(define (setup-listener uconn #!optional (port 4242))
  (handle-exceptions
   exn
   (if (< port 65535)
       (setup-listener uconn (+ port 1))
       #f)
   (connect-listener uconn port)))

(define (connect-listener uconn port)
  ;; (tcp-listener-socket LISTENER)(socket-name so)
  ;; sockaddr-address, sockaddr-port, sockaddr->string
  (let* ((tlsn (tcp-listen port 1000 #f)) ;; (tcp-listen TCPPORT [BACKLOG [HOST]])
	 (addr (get-my-best-address))) ;; (hostinfo-addresses (host-information (current-hostname)))
    (udat-port-set!      uconn port)
    (udat-host-port-set! uconn (conc addr":"port))
    (udat-socket-set!    uconn tlsn)
    uconn))

;; run-listener does all the work of starting a listener in a thread
;; it then returns control
;;
(define (run-listener handler-proc #!optional (port-suggestion 4242))
  (let* ((uconn (make-udat)))
    (udat-work-proc-set! uconn handler-proc)
    (if (setup-listener uconn port-suggestion)
	(let* ((orig-in  (current-input-port))
	       (orig-out (current-output-port)))
	  ((make-tcp-server
	    (udat-socket uconn)
	    (lambda ()
	      (let* ((rdat
		      (string->obj (read))
		      ;; (read in)
		      ;; (deserialize)
		      ) 
		     (resp (let ((tcp-in  (current-input-port))
				 (tcp-out (current-output-port)))
			     (current-input-port orig-in)
			     (current-output-port orig-out)
			     (let ((res (do-work uconn rdat)))
			       (current-input-port tcp-in)
			       (current-output-port tcp-out)
			       res))))
		(write (obj->string resp))
		;; (serialize resp)
		;; (write resp out)
		)))))
	(assert #f "ERROR: run-listener called without proper setup."))))

(define (wait-and-close uconn)
  (thread-join! (udat-cmd-thread uconn))
  (tcp-close (udat-socket uconn)))

;;======================================================================
;; == << ;; peers and connections
;; == << ;;======================================================================

(define *send-mutex* (make-mutex))

;; send structured data to recipient
;;
;;  NOTE: qrykey is what was called the "cookie" previously
;;
;;     retval tells send to expect and wait for return data (one line) and return it or time out
;;       this is for ping where we don't want to necessarily have set up our own server yet.
;;
(define (send-receive udata host-port cmd params)
  (let* ((host-port-lst (string-split host-port ":"))
	 (host          (car host-port-lst))
	 (port          (string->number (cadr host-port-lst)))
	 (my-host-port (and udata (udat-host-port udata)))          ;; remote will return to this
	 (isme         (equal? host-port my-host-port)) ;; calling myself?
	 ;; dat is a self-contained work block that can be sent or handled locally
	 (dat          (list my-host-port 'qrykey cmd params #;(cons (current-seconds)(current-milliseconds)))))
    (cond
     (isme (do-work udata dat)) ;; no transmission needed
     (else
      (handle-exceptions ;; TODO - MAKE THIS EXCEPTION CMD SPECIFIC?
       exn
       (begin
         (print "ULEX send-receive: "cmd", "params", exn="exn)
         (message exn))
       (begin
	 ;; (mutex-lock! *send-mutex*) ;; DOESN'T SEEM TO HELP
	 (let-values (((inp oup)(tcp-connect host port)))
	   (let ((res (if (and inp oup)
			  (begin
			    (write (obj->string dat) oup)
			    ;; (write dat oup)
			    ;; (serialize dat oup)
			    (close-output-port oup)
			    (string->obj (read inp))
			    ;; (read inp)
			    ;; (deserialize inp)
			    )
			  (begin
			    (print "ERROR: send called but no receiver has been setup. Please call setup first!")
			    #f))))
	     ;; (close-output-port oup)
	     (close-input-port inp)
	     ;; (mutex-unlock! *send-mutex*) ;; DOESN'T SEEM TO HELP
	     res)))))))) ;; res will always be 'ack unless return-method is direct

;;======================================================================
;; work queues - this is all happening on the listener side
;;======================================================================

;; move the logic to return the result somewhere else?
;;
(define (do-work uconn rdat)
  ;; put this following into a do-work procedure
  (match rdat
     ((rem-host-port qrykey cmd params)
      (case cmd
	((ping) 'ping-ack) ;; bypass calling the proc
	(else
	 (let* ((proc       (udat-work-proc uconn))
		(start-time (current-milliseconds))
		(result     (with-output-to-port (current-error-port)
			      (lambda ()
				(proc rem-host-port qrykey cmd params))))
		(end-time   (current-milliseconds))
		(run-time   (- end-time start-time)))
	   result))))
     (else
      (print "ERROR: rdat "rdat", did not match rem-host-port qrykey cmd params"))))

;;======================================================================
;; misc utils
;;======================================================================

(define (pp-uconn uconn)
  (pp (udat->alist uconn)))

;;======================================================================
;; network utilities
;;======================================================================

;; NOTE: Look at address-info egg as alternative to some of this

(define (rate-ip ipaddr)
  (regex-case ipaddr
    ( "^127\\..*" _ 0 )
    ( "^(10\\.0|192\\.168)\\..*" _ 1 )
    ( else 2 ) ))

;; Change this to bias for addresses with a reasonable broadcast value?
;;
(define (ip-pref-less? a b)
  (> (rate-ip a) (rate-ip b)))

(define (get-my-best-address)
  (let ((all-my-addresses (get-all-ips)))
    (cond
     ((null? all-my-addresses)
      (get-host-name))                                          ;; no interfaces?
     ((eq? (length all-my-addresses) 1)
      (car all-my-addresses))                      ;; only one to choose from, just go with it
     (else
      (car (sort all-my-addresses ip-pref-less?))))))

(define (get-all-ips-sorted)
  (sort (get-all-ips) ip-pref-less?))

(define (get-all-ips)
  (map address-info-host
       (filter (lambda (x)
		 (equal? (address-info-type x) "tcp"))
	       (address-infos (get-host-name)))))

)

Added ulex-trials/Makefile version [3068e6125c].

































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all : a b ulex-test

ulex-test : ulex-test.scm ../ulex/ulex.scm
	csc ulex-test.scm

a : a.scm ../ulex/ulex.scm
	csc a.scm 

b : b.scm ../ulex/ulex.scm
	csc b.scm 

test : ulex-test
	for x in $$(seq 9);do export NBFAKE_LOG=NBFAKE_$$x;sleep 1;nbfake ./ulex-test run 828$$x;echo $$cmd;$$cmd;done

clean :
	rm -f ulex-test .runners/* NBFAKE*

Added ulex-trials/server-one.scm version [46e56d98ca].



























































































































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(import tcp-server format (chicken tcp) (chicken io) (chicken string) (prefix sqlite3 sqlite3:) sql-de-lite srfi-18 simple-exceptions mailbox s11n)
(let* ((work-mailbox (make-mailbox))
       (notify-mailbox (make-mailbox))
(th1 (make-thread (lambda ()

((make-tcp-server
  (tcp-listen 6505)
  (lambda ()
    (let* ((db (sqlite3:open-database "test.db"))
           (rec-data (deserialize)))
    (sqlite3:set-busy-handler! db (sqlite3:make-busy-timeout 136000))
    ;;(exec (sql db "INSERT INTO entries (received,send) VALUES (?,?);") "something" (conc "Server One Response: " "something else"))
    (sqlite3:execute db "INSERT INTO entries (received,send) VALUES (?,?);" "something" (conc "Server One Response: " "something else"))
    (mailbox-send! work-mailbox rec-data)
    (format (current-error-port) (conc rec-data))
    (write-line (conc "Response to: " (conc rec-data)))
    ;;(close-database db)
    )))
#t))
"receive"))
(th2 (make-thread (lambda () 
         (print "Jeff is here")  
         (let loop ((entries 0))  
         (thread-sleep! 0.8)
         (print "Preparding to send entries" entries)
         (handle-exceptions exn (begin (print "Had an issue: " (message exn))(thread-sleep! 10)) 
         (define-values (i o) (tcp-connect "localhost" 6504))
         (serialize (list "localhost:6505" "from-server-one") o)
         (print (read-line i))
         (close-input-port i)
         (close-output-port o))
         (loop (+ entries 1)))) "send"))
(th3 (make-thread (lambda ()
         (print "In mailbox thread")
         (let loop2 ((entries2 0))
           (print "Processing: " (mailbox-receive! work-mailbox))
           (mailbox-send! notify-mailbox (list 'ack))
           (thread-sleep! 0.01)
         (loop2 1))) "processing"))
(th4 (make-thread (lambda ()
         (print "In notify-mailbox thread")
         (let loop3 ((entries3 0))
           (print "Notifying: " (mailbox-receive! notify-mailbox))
           (handle-exceptions exn (begin (print "Had an issue: " (message exn))(thread-sleep! 10)) 
           (define-values (i o) (tcp-connect "localhost" 6504))
           (serialize (list 'ack "from-server-one") o)
           (print (read-line i))
           (close-input-port i)
           (close-output-port o))
           ;;(thread-sleep! 1)
         (loop3 1))) "notify"))

)
(thread-start! th1)
(thread-start! th2)
(thread-start! th3)
(thread-start! th4)
(thread-join! th2)
)

(print "Done here")

Added ulex-trials/server-two.scm version [2a7a7627dc].



























































































































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(import tcp-server format (chicken tcp) (chicken io) (chicken string) (prefix sqlite3 sqlite3:) sql-de-lite srfi-18 simple-exceptions mailbox s11n)
(let* ((work-mailbox (make-mailbox))
       (notify-mailbox (make-mailbox))
(th1 (make-thread (lambda ()

((make-tcp-server
  (tcp-listen 6504)
  (lambda ()
    (let* ((db (sqlite3:open-database "test.db"))
           (rec-data (deserialize)))
    (sqlite3:set-busy-handler! db (sqlite3:make-busy-timeout 136000))
    ;;(exec (sql db "INSERT INTO entries (received,send) VALUES (?,?);") "something" (conc "Server One Response: " "something else"))
    (sqlite3:execute db "INSERT INTO entries (received,send) VALUES (?,?);" "something" (conc "Server One Response: " "something else"))
    (mailbox-send! work-mailbox rec-data)
    (format (current-error-port) (conc rec-data))
    (write-line (conc "Response to: " (conc rec-data)))
    ;;(close-database db)
    )))
#t))
"receive"))
(th2 (make-thread (lambda () 
         (print "Jeff is here")  
         (let loop ((entries 0))  
         (thread-sleep! 0.8)
         (print "Preparding to send entries" entries)
         (handle-exceptions exn (begin (print "Had an issue: " (message exn))(thread-sleep! 10)) 
         (define-values (i o) (tcp-connect "localhost" 6505))
         (serialize (list "localhost:6505" "from-server-two") o)
         (print (read-line i))
         (close-input-port i)
         (close-output-port o))
         (loop (+ entries 1)))) "send"))
(th3 (make-thread (lambda ()
         (print "In mailbox thread")
         (let loop2 ((entries2 0))
           (print "Processing: " (mailbox-receive! work-mailbox))
           (mailbox-send! notify-mailbox (list 'ack))
           (thread-sleep! 0.5)
         (loop2 1))) "processing"))
(th4 (make-thread (lambda ()
         (print "In notify-mailbox thread")
         (let loop3 ((entries3 0))
           (print "Notifying: " (mailbox-receive! notify-mailbox))
           (handle-exceptions exn (begin (print "Had an issue: " (message exn))(thread-sleep! 10)) 
           (define-values (i o) (tcp-connect "localhost" 6505))
           (serialize (list 'ack "from-server-two") o)
           (print (read-line i))
           (close-input-port i)
           (close-output-port o))
           ;;(thread-sleep! 1)
         (loop3 1))) "notify"))

)
(thread-start! th1)
(thread-start! th2)
(thread-start! th3)
(thread-start! th4)
(thread-join! th2)
)

(print "Done here")

Added ulex-trials/ulex-test.scm version [a2b7f04cc7].











































































































































































































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(include "../ulex/ulex.scm")

(module ulex-test *
	
(import scheme
	(chicken io)
	(chicken base)
	(chicken time)
	(chicken file)
	(chicken file posix)
        (chicken string)
	(chicken process-context)
	(chicken process-context posix)
        miscmacros
;;         nng
        srfi-18
	srfi-69
        test
	matchable
	typed-records
	system-information
	directory-utils

	ulex
	)

(define help "Usage: ulex-test COMMAND
  where COMMAND is one of:
    run host:port  : start test server - start several in same dir
")

(define (call uconn msg addr)
  (print "Sent: "msg" to " addr ", received: "
	 (send-receive uconn addr 'hello msg)))

;; start    => hello 0
;; hello 0  => hello 1
;; hello 1  => hello 2
;;  ...
;; hello 11 => 'done
;;
(define (process-message mesg)
  (print "In process-message")
  (let ((parts (string-split mesg)))
    (match
     parts
     ((msg c)
      (let ((count (string->number c)))
	(if (> count 10)
	    'done
	    (conc msg " " (if count count 0)))))
     ((msg)
      (conc msg " 0"))
     (else
      "hello 0"))))

(define (main)
  (match
   (command-line-arguments)
   ((run myport)
    ;; start listener
    ;; put myaddr into file by host-pid in .runners
    ;; for 1 minute
    ;;     get all in .runners
    ;;     call each with a message
    ;;
    (let* ((port     (string->number myport))
	   (endtimes (+ (current-seconds) 20)) ;; run for 20 seconds
	   (handler  (lambda (rem-host-port qrykey cmd params)
		       (process-message params)))
	   (uconn    (run-listener handler myport))
	   (rfile    (conc ".runners/"(get-host-name)"-"(current-process-id))))
      (if (not (and (file-exists? ".runners")
		    (directory? ".runners")))
	  (create-directory ".runners" #t))
      (with-output-to-file rfile
	(lambda ()
	  (print myport)))
      (let loop ((entries '()))
	(if (> (current-seconds) endtimes)
	    (begin
	      (delete-file* rfile)
	      (sleep 1)
	      (exit))
	    (if (null? entries)
		(loop (glob ".runners/*"))
		(let* ((entry (car entries))
		       (destaddr (with-input-from-file entry read-line)))
		  (call uconn (conc "hello-from-"myport"to-"destaddr) (conc "localhost:" destaddr))
		  ;; (thread-sleep! 0.025)
		  (loop (cdr entries))))))))
   ((cmd)(print "ERROR: command "cmd", not recognised.\n\n"help))
   (else
    (print help))))

) ;; end module

(import ulex-test)
(main)


Deleted ulex.scm version [39353b5283].

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;;======================================================================
;; Copyright 2019, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(declare (unit ulex))
(declare (uses pkts))

(include "ulex/ulex.scm")
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<
















































Added ulex.scm.template version [d3640869ae].















































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;;======================================================================
;; Copyright 2019, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(declare (unit ulex))

(include "ulex-FLAVOR/ulex.scm")

Added ulex/Makefile version [1659f80ce4].



















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all : ulex.pdf ulex.png

ulex.pdf : ulex.dot
	dot -Tpdf ulex.dot -o ulex.pdf

ulex.png : ulex.dot
	dot -Tpng ulex.dot -o ulex.png


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;;======================================================================
;; Copyright 2022, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(declare (unit dbmgrmod))

(declare (uses ulex))
(declare (uses apimod))
(declare (uses pkts))
(declare (uses commonmod))
(declare (uses dbmod))
(declare (uses mtargs))
(declare (uses portloggermod))
(declare (uses debugprint))

(module dbmgrmod
    *

(import scheme
	chicken.base
	chicken.condition
	chicken.file
	chicken.format
	chicken.port
	chicken.process
	chicken.process-context
	chicken.process-context.posix
	chicken.sort
	chicken.string
	chicken.time
	
	(prefix sqlite3 sqlite3:)
	matchable
	md5
	message-digest
	regex
	s11n
	srfi-1
	srfi-18
	srfi-69
	system-information
	typed-records
	
	pkts
	ulex

	commonmod
	apimod
	dbmod
	debugprint
	(prefix mtargs args:)
	portloggermod
	)

;; Configurations for server
;; (tcp-buffer-size 2048)
;; (max-connections 2048) 

;; info about me as a listener and my connections to db servers
;; stored (for now) in *db-serv-info*
;;
(defstruct servdat
  (host #f)
  (port #f)
  (uuid #f)
  (dbfile #f)
  (uconn   #f) ;; this is the listener *FOR THIS PROCESS*
  (mode    #f)
  (status 'starting)
  (trynum 0) ;; count the number of ports we've tried
  (conns  (make-hash-table)) ;; apath/dbname => conndat
  ) 

(define *db-serv-info* (make-servdat))

(define (servdat->url sdat)
  (conc (servdat-host sdat)":"(servdat-port sdat)))

;; db servers contact info
;;
(defstruct conndat
  (apath    #f)
  (dbname   #f)
  (fullname #f)
  (hostport #f)
  (ipaddr   #f)
  (port     #f)
  (srvpkt   #f)
  (srvkey   #f)
  (lastmsg  0)
  (expires  0))

(define *srvpktspec*
  `((server (host    . h)
	    (port    . p)
	    (servkey . k)
	    (pid     . i)
	    (ipaddr  . a)
	    (dbpath  . d))))

;;======================================================================
;;  S U P P O R T   F U N C T I O N S
;;======================================================================

;; set up the api proc, seems like there should be a better place for this?
;;
;; IS THIS NEEDED ANYMORE? TODO - REMOVE IF POSSIBLE
;;
;; (define api-proc (make-parameter conc))
;; (api-proc api:execute-requests)

;; do we have a connection to apath dbname and
;; is it not expired? then return it
;;
;; else setup a connection
;;
;; if that fails, return '(#f "some reason") ;; NB// convert to raising an exception
;;
(define (rmt:get-conn remdat apath dbname)
  (let* ((fullname (db:dbname->path apath dbname)))
    (hash-table-ref/default (servdat-conns remdat) fullname #f)))

(define (rmt:drop-conn remdat apath dbname)
  (let* ((fullname (db:dbname->path apath dbname)))
    (hash-table-delete! (servdat-conns remdat) fullname)))
  
(define (rmt:find-main-server uconn apath dbname)
  (let* ((pktsdir     (get-pkts-dir apath))
	 (all-srvpkts (get-all-server-pkts pktsdir *srvpktspec*))
	 (viable-srvs (get-viable-servers all-srvpkts dbname)))
    (get-the-server uconn apath viable-srvs)))


(define *connstart-mutex* (make-mutex))
(define *last-main-start* 0)

;; looks for a connection to main, returns if have and not exired
;; creates new otherwise
;; 
;; connections for other servers happens by requesting from main
;;
;; TODO: This is unnecessarily re-creating the record in the hash table
;;
(define (rmt:open-main-connection remdat apath)
  (let* ((fullpath (db:dbname->path apath ".db/main.db"))
	 (conns    (servdat-conns remdat))
	 (conn     (rmt:get-conn remdat apath ".db/main.db")) ;; (hash-table-ref/default conns fullpath #f)) ;; TODO - create call for this
	 (start-rmt:run (lambda ()
			  (let* ((th1 (make-thread (lambda ()(rmt:run (get-host-name))) "non-db mode server")))
			    (thread-start! th1)
			    (thread-sleep! 1)
			    (let loop ((count 0))
			      (assert (< count 30) "FATAL: responder failed to initialize in rmt:open-main-connection")
			      (if (or (not *db-serv-info*)
				      (not (servdat-uconn *db-serv-info*)))
				  (begin
				    (thread-sleep! 1)
				    (loop (+ count 1)))
				  (begin
				    (servdat-mode-set! *db-serv-info* 'non-db)
				    (servdat-uconn *db-serv-info*)))))))
	 (myconn    (servdat-uconn *db-serv-info*)))
    (cond
     ((not myconn)
      (start-rmt:run)
      (rmt:open-main-connection remdat apath))
     ((and conn                                             ;; conn is NOT a socket, just saying ...
	   (< (current-seconds) (conndat-expires conn)))
      #t) ;; we are current and good to go - we'll deal elsewhere with a server that was killed or died 
     ((and conn
	   (>= (current-seconds)(conndat-expires conn)))
      (debug:print-info 0 *default-log-port* "connection to "fullpath" server expired. Reconnecting.")
      (rmt:drop-conn remdat apath ".db/main.db") ;;
      (rmt:open-main-connection remdat apath))
     (else
      ;; Below we will find or create and connect to main
      (debug:print-info 0 *default-log-port* "rmt:open-main-connection - starting from scratch")
      (let* ((dbname         (db:run-id->dbname #f))
	     (the-srv        (rmt:find-main-server myconn apath dbname))
	     (start-main-srv (lambda () ;; call IF there is no the-srv found
			       (mutex-lock! *connstart-mutex*)
			       (if (> (- (current-seconds) *last-main-start*) 5) ;; at least four seconds since last attempt to start main server
				   (begin
				     (api:run-server-process apath dbname)
				     (set! *last-main-start* (current-seconds))
				     (thread-sleep! 1))
				   (thread-sleep! 0.25))
			       (mutex-unlock! *connstart-mutex*)
			       (rmt:open-main-connection remdat apath) ;; TODO: Add limit to number of tries
			       )))
	(if (not the-srv) ;; have server, try connecting to it
	    (start-main-srv)
	    (let* ((srv-addr (server-address the-srv)) ;; need serv
		   (ipaddr   (alist-ref 'ipaddr  the-srv))
		   (port     (alist-ref 'port    the-srv))
		   (srvkey   (alist-ref 'servkey the-srv))
		   (fullpath (db:dbname->path apath dbname))
		   
		   (new-the-srv (make-conndat
				 apath:   apath
				 dbname:  dbname
				 fullname: fullpath
				 hostport: srv-addr
				 ;; socket: (open-nn-connection srv-addr)  - TODO - open ulex connection?
				 ipaddr: ipaddr
				 port: port
				 srvpkt: the-srv
				 srvkey: srvkey ;; generated by rmt:get-signature on the server side
				 lastmsg: (current-seconds)
				 expires: (+ (current-seconds)
					     (server:expiration-timeout)
					     -2) ;; this needs to be gathered during the ping
				 )))
	      (hash-table-set! conns fullpath new-the-srv)))
	#t)))))

;; NB// sinfo is a servdat struct
;;
(define (rmt:general-open-connection sinfo apath dbname #!key (num-tries 5))
  (assert (not (equal? dbname ".db/main.db")) "ERROR: general-open-connection should never be called with main as the db")
  (let* ((mdbname  ".db/main.db") ;; (db:run-id->dbname #f)) TODO: put this back to the lookup when stable
	 (fullname (db:dbname->path apath dbname))
	 (conns    (servdat-conns sinfo))
	 (mconn    (rmt:get-conn sinfo apath ".db/main.db"))
	 (dconn    (rmt:get-conn sinfo apath dbname)))
    #;(if (and mconn
	     (not (debug:print-logger)))
	(begin
	  (debug:print-info 0 *default-log-port* "Turning on logging to main, look in logs dir for main log.")
	  (debug:print-logger rmt:log-to-main)))
    (cond
     ((and mconn
	   dconn
	   (< (current-seconds)(conndat-expires dconn)))
      #t) ;; good to go
     ((not mconn) ;; no channel open to main? open it...
      (rmt:open-main-connection sinfo apath)
      (rmt:general-open-connection sinfo apath dbname num-tries: (- num-tries 1)))
     ((not dconn)                 ;; no channel open to dbname?     
      (let* ((res (rmt:send-receive-real sinfo apath mdbname 'get-server `(,apath ,dbname))))
	(case res
	  ((server-started)
	   (if (> num-tries 0)
	       (begin
		 (thread-sleep! 2)
		 (rmt:general-open-connection sinfo apath dbname num-tries: (- num-tries 1)))
	       (begin
		 (debug:print-error 0 *default-log-port* "Failed to start servers needed or open channel to "apath", "dbname)
		 (exit 1))))
	  (else
	   (if (list? res) ;; server has been registered and the info was returned. pass it on.
	       (begin ;;  ("192.168.0.9" 53817
		      ;;  "5e34239f48e8973b3813221e54701a01" "24310"
		      ;;  "192.168.0.9"
		      ;;  "/home/matt/data/megatest/tests/simplerun"
		 ;;  ".db/1.db")
		 (match
		  res
		  ((host port servkey pid ipaddr apath dbname)
		   (debug:print-info 0 *default-log-port* "got "res)
		   (hash-table-set! conns
				    fullname
				    (make-conndat
				     apath: apath
				     dbname: dbname
				     hostport: (conc host":"port)
				     ;; socket: (open-nn-connection (conc host":"port)) ;; TODO - open ulex connection?
				     ipaddr: ipaddr
				     port: port
				     srvkey: servkey
				     lastmsg: (current-seconds)
				     expires: (+ (current-seconds)
						 (server:expiration-timeout)
						 -2))))
		  (else
		   (debug:print-info 0 *default-log-port* "return data from starting server did not match host port servkey pid ipaddr apath dbname " res)))
		 res)
	       (begin
		 (debug:print-info 0 *default-log-port* "Unexpected result: " res)
		 res)))))))
    #t))

;;======================================================================

;; FOR DEBUGGING SET TO #t
;; (define *localmode* #t)
(define *localmode* #f)
(define *dbstruct* (make-dbr:dbstruct))

;; Defaults to current area
;;
(define (rmt:send-receive cmd rid params #!key (attemptnum 1)(area-dat #f))
  (let* ((apath      *toppath*)
	 (sinfo      *db-serv-info*)
	 (dbname     (db:run-id->dbname rid)))
    (if *localmode*
	(api:execute-requests *dbstruct* cmd params)
	(begin
	  (rmt:open-main-connection sinfo apath)
	  (if rid (rmt:general-open-connection sinfo apath dbname))
	  #;(if (not (member cmd '(log-to-main)))
	      (debug:print-info 0 *default-log-port* "rmt:send-receive "cmd" params="params))
	  (rmt:send-receive-real sinfo apath dbname cmd params)))))

;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; sometime in the future
;;
(define (rmt:send-receive-real sinfo apath dbname cmd params)
  (assert (not (eq? 'primordial (thread-name (current-thread)))) "FATAL: Do not call rmt:send-receive-real in the primodial thread.")
  (let* ((cdat (rmt:get-conn sinfo apath dbname)))
    (assert cdat "FATAL: rmt:send-receive-real called without the needed channels opened")
    (let* ((uconn    (servdat-uconn sinfo)) ;; get the interface to ulex
	   ;; then send-receive using the ulex layer to host-port stored in cdat
	   (res      (send-receive uconn (conndat-hostport cdat) cmd params))
	   #;(th1      (make-thread (lambda ()
				    (set! res (send-receive uconn (conndat-hostport cdat) cmd params)))
				  "send-receive thread")))
      ;; (thread-start! th1)
      ;; (thread-join! th1)   ;; gratuitious thread stuff is so that mailbox is not used in primordial thead
      ;; since we accessed the server we can bump the expires time up
      (conndat-expires-set! cdat (+ (current-seconds)
				    (server:expiration-timeout)
				    -10)) ;; ten second margin for network time misalignments etc.
      res)))

;; db is at apath/.db/dbname, rid is an intermediary solution and will be removed
;; sometime in the future.
;;
;; Purpose - call the main.db server and request a server be started
;; for the given area path and dbname
;;

(define (rmt:print-db-stats)
  (let ((fmtstr "~40a~7-d~9-d~20,2-f")) ;; "~20,2-f"
    (debug:print 18 *default-log-port* "DB Stats, "(seconds->year-week/day-time (current-seconds))"\n=====================")
    (debug:print 18 *default-log-port* (format #f "~40a~8a~10a~10a" "Cmd" "Count" "TotTime" "Avg"))
    (for-each (lambda (cmd)
		(let ((cmd-dat (hash-table-ref *db-stats* cmd)))
		  (debug:print 18 *default-log-port* (format #f fmtstr cmd (vector-ref cmd-dat 0) (vector-ref cmd-dat 1) (/ (vector-ref cmd-dat 1)(vector-ref cmd-dat 0))))))
	      (sort (hash-table-keys *db-stats*)
		    (lambda (a b)
		      (> (vector-ref (hash-table-ref *db-stats* a) 0)
			 (vector-ref (hash-table-ref *db-stats* b) 0)))))))

(define (rmt:get-max-query-average run-id)
  (mutex-lock! *db-stats-mutex*)
  (let* ((runkey (conc "run-id=" run-id " "))
	 (cmds   (filter (lambda (x)
			   (substring-index runkey x))
			 (hash-table-keys *db-stats*)))
	 (res    (if (null? cmds)
		     (cons 'none 0)
		     (let loop ((cmd (car cmds))
				(tal (cdr cmds))
				(max-cmd (car cmds))
				(res 0))
		       (let* ((cmd-dat (hash-table-ref *db-stats* cmd))
			      (tot     (vector-ref cmd-dat 0))
			      (curravg (/ (vector-ref cmd-dat 1) (vector-ref cmd-dat 0))) ;; count is never zero by construction
			      (currmax (max res curravg))
			      (newmax-cmd (if (> curravg res) cmd max-cmd)))
			 (if (null? tal)
			     (if (> tot 10)
				 (cons newmax-cmd currmax)
				 (cons 'none 0))
			     (loop (car tal)(cdr tal) newmax-cmd currmax)))))))
    (mutex-unlock! *db-stats-mutex*)
    res))

;; host and port are used to ensure we are remove proper records
(define (rmt:server-shutdown host port)
  (let ((dbfile   (servdat-dbfile *db-serv-info*)))
    (debug:print-info 0 *default-log-port* "dbfile is "dbfile)
    (if dbfile
	(let* ((am-server  (args:get-arg "-server"))
	       (dbfile     (args:get-arg "-db"))
	       (apath      *toppath*)
	       #;(sinfo     *remotedat*)) ;; foundation for future fix
	  (if *dbstruct-db*
	      (let* ((dbdat      (db:get-dbdat *dbstruct-db* apath dbfile))
		     (db         (dbr:dbdat-db dbdat))
		     (inmem      (dbr:dbdat-db dbdat))   ;; WRONG
		     )
		;; do a final sync here
		(debug:print-info 0 *default-log-port* "Doing final sync for "apath" "dbfile" at "(current-seconds))
		(db:sync-inmem->disk *dbstruct-db* apath dbfile force-sync: #t)
		;; let's finalize here
		(debug:print-info 0 *default-log-port* "Finalizing db and inmem")
		(if (sqlite3:database? db)
		    (sqlite3:finalize! db)
		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, db is not a database, not finalizing..."))
		(if (sqlite3:database? inmem)
		    (sqlite3:finalize! inmem)
		    (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, inmem is not a database, not finalizing..."))
		(debug:print-info 0 *default-log-port* "Finalizing db and inmem complete"))
	      (debug:print-info 0 *default-log-port* "Db was never opened, no cleanup to do."))
	  (if (not am-server)
	      (debug:print-info 0 *default-log-port* "I am not a server, should NOT get here!")
	      (if (string-match ".*/main.db$" dbfile)
		  (let ((pkt-file (conc (get-pkts-dir *toppath*)
					"/" (servdat-uuid *db-serv-info*)
					".pkt")))
		    (debug:print-info 0 *default-log-port* "removing pkt "pkt-file)
		    (delete-file* pkt-file)
		    (debug:print-info 0 *default-log-port* "Releasing lock (if any) for "dbfile ", host "host", port "port)
		    (db:with-lock-db
		     (servdat-dbfile *db-serv-info*)
		     (lambda (dbh dbfile)
		       (db:release-lock dbh dbfile host port)))) ;; I'm not the server - should not have a lock to remove
		  (let* ((sdat *db-serv-info*) ;; we have a run-id server
			 (host (servdat-host sdat))
			 (port (servdat-port sdat))
			 (uuid (servdat-uuid sdat))
			 (res  (rmt:deregister-server *db-serv-info* *toppath* host port uuid dbfile)))
		    (debug:print-info 0 *default-log-port* "deregistered-server, res="res)
		    (debug:print-info 0 *default-log-port* "deregistering server "host":"port" with uuid "uuid)
		    )))))))


(define (common:run-sync?)
    ;; (and (common:on-homehost?)
  (args:get-arg "-server"))

(define *rmt:run-mutex* (make-mutex))
(define *rmt:run-flag* #f)

;; Main entry point to start a server. was start-server
(define (rmt:run hostn)
  (mutex-lock! *rmt:run-mutex*)
  (if *rmt:run-flag*
      (begin
	(debug:print-warn 0 *default-log-port* "rmt:run already running.")
	(mutex-unlock! *rmt:run-mutex*))
      (begin
	(set! *rmt:run-flag* #t)
	(mutex-unlock! *rmt:run-mutex*)
	;;  ;; Configurations for server
	;;  (tcp-buffer-size 2048)
	;;  (max-connections 2048) 
	(debug:print 2 *default-log-port* "PID: "(current-process-id)". Attempting to start the server ...")
	(if (and *db-serv-info*
		 (servdat-uconn *db-serv-info*))
	    (let* ((uconn (servdat-uconn *db-serv-info*)))
	      (wait-and-close uconn))
	    (let* ((port            (portlogger:open-run-close portlogger:find-port))
		   (handler-proc    (lambda (rem-host-port qrykey cmd params) ;;
				      (set! *db-last-access* (current-seconds))
				      (assert (list? params) "FATAL: handler called with non-list params")
				      (assert (args:get-arg "-server") "FATAL: handler called on non-server side. cmd="cmd", params="params)
				      (debug:print 0 *default-log-port* "handler call: "cmd", params="params)
				      (api:execute-requests *dbstruct-db* cmd params))))
	      ;; (api:process-request *dbstuct-db* 
	      (if (not *db-serv-info*)
		  (set! *db-serv-info* (make-servdat host: hostn port: port)))
	      (let* ((uconn (run-listener handler-proc port))
		     (rport (udat-port uconn))) ;; the real port
		(servdat-host-set! *db-serv-info* hostn)
		(servdat-port-set! *db-serv-info* rport)
		(servdat-uconn-set! *db-serv-info* uconn)
		(wait-and-close uconn)
		(db:print-current-query-stats)
		)))
	(let* ((host (servdat-host *db-serv-info*))
	       (port (servdat-port *db-serv-info*))
	       (mode (or (servdat-mode *db-serv-info*)
			 "non-db")))
	  ;; server exit stuff here
	  ;; (rmt:server-shutdown host port) - always do in on-exit
	  ;; (portlogger:open-run-close portlogger:set-port port "released") ;; moved to on-exit 
	  (debug:print-info 0 *default-log-port* "Server "host":"port" mode "mode"shutdown complete. Exiting")
	  ))))

;;======================================================================
;; S E R V E R   U T I L I T I E S 
;;======================================================================


;;======================================================================
;; NEW SERVER METHOD
;;======================================================================

;; only use for main.db - need to re-write some of this :(
;;
(define (get-lock-db sdat dbfile host port)
  (assert host "FATAL: get-lock-db called with host not set.")
  (assert port "FATAL: get-lock-db called with port not set.")
  (let* ((dbh (db:open-run-db dbfile db:initialize-db)) ;; open-run-db creates a standard db with schema used by all situations
	 (res (db:get-iam-server-lock dbh dbfile host port))
	 (uconn (servdat-uconn sdat)))
    ;; res => list then already locked, check server is responsive
    ;;     => #t then sucessfully got the lock
    ;;     => #f reserved for future use as to indicate something went wrong
    (match res
      ((owner_pid owner_host owner_port event_time)
       (if (server-ready? uconn (conc owner_host":"owner_port) "abc")
	   #f      ;; locked by someone else
	   (begin  ;; locked by someone dead and gone
	     (debug:print 0 *default-log-port* "WARNING: stale lock - have to steal it. This may fail.")
	     (db:steal-lock-db dbh dbfile port))))
      (#t  #t) ;; placeholder so that we don't touch res if it is #t
      (else (set! res #f)))
    (sqlite3:finalize! dbh)
    res))


(define (register-server pkts-dir pkt-spec host port servkey ipaddr dbpath)
  (let* ((pkt-dat `((host    . ,host)
		    (port    . ,port)
		    (servkey . ,servkey)
		    (pid     . ,(current-process-id))
		    (ipaddr  . ,ipaddr)
		    (dbpath  . ,dbpath)))
	 (uuid    (write-alist->pkt
		   pkts-dir
		   pkt-dat
		   pktspec: pkt-spec
		   ptype: 'server)))
    (debug:print 0 *default-log-port* "Server on "host":"port" registered in pkt "uuid)
    uuid))

(define (get-pkts-dir #!optional (apath #f))
  (let* ((effective-toppath (or *toppath* apath)))
    (assert effective-toppath
	    "ERROR: get-pkts-dir called without *toppath* set. Exiting.")
    (let* ((pdir (conc effective-toppath "/.meta/srvpkts")))
      (if (file-exists? pdir)
	  pdir
	  (begin
	    (handle-exceptions ;; this exception handler should NOT be needed but ...
		exn
		pdir
	      (create-directory pdir #t))
	    pdir)))))

;; given a pkts dir read 
;;
(define (get-all-server-pkts pktsdir-in pktspec)
  (let* ((pktsdir  (if (file-exists? pktsdir-in)
		       pktsdir-in
		       (begin
			 (create-directory pktsdir-in #t)
			 pktsdir-in)))
	 (all-pkt-files (glob (conc pktsdir "/*.pkt"))))
    (map (lambda (pkt-file)
	   (read-pkt->alist pkt-file pktspec: pktspec))
	 all-pkt-files)))

(define (server-address srv-pkt)
  (conc (alist-ref 'host srv-pkt) ":"
	(alist-ref 'port srv-pkt)))
	
(define (server-ready? uconn host-port key) ;; server-address is host:port
  (let* ((params `((cmd . ping)(key . ,key)))
	 (data `((cmd . ping)
		 (key . ,key)
		 (params . ,params))) ;; I don't get it.
	 (res  (send-receive uconn host-port 'ping data)))
    (if (eq? res 'ack) ;; yep, likely it is who we want on the other end
	res
	#f)))
;; (begin (debug:print-info 0 *default-log-port* "server-ready? => "res) #f))))

; from the pkts return servers associated with dbpath
;; NOTE: Only one can be alive - have to check on each
;;       in the list of pkts returned
;;
(define (get-viable-servers serv-pkts dbpath)
  (let loop ((tail serv-pkts)
	     (res  '()))
    (if (null? tail)
	res ;; NOTE: sort by age so oldest is considered first
	(let* ((spkt (car tail)))
	  (loop (cdr tail)
		(if (equal? dbpath (alist-ref 'dbpath spkt))
		    (cons spkt res)
		    res))))))

(define (remove-pkts-if-not-alive uconn serv-pkts)
  (filter (lambda (pkt)
	    (let* ((host (alist-ref 'host pkt))
		   (port (alist-ref 'port pkt))
		   (host-port (conc host":"port))
		   (key  (alist-ref 'servkey  pkt))
		   (pktz (alist-ref 'Z        pkt))
		   (res  (server-ready? uconn host-port key)))
	      (if res
		  res
		  (let* ((pktsdir (get-pkts-dir *toppath*))
			 (pktpath (conc pktsdir"/"pktz".pkt")))
		    (debug:print 0 *default-log-port* "WARNING: pkt with no server "pktpath)
		    (delete-file* pktpath)
		    #f))))
	  serv-pkts))

;; from viable servers get one that is alive and ready
;;
(define (get-the-server uconn apath serv-pkts)
  (let loop ((tail serv-pkts))
    (if (null? tail)
	#f
	(let* ((spkt  (car tail))
	       (host  (alist-ref 'ipaddr spkt))
	       (port  (alist-ref 'port spkt))
	       (host-port (conc host":"port))
	       (dbpth (alist-ref 'dbpath spkt))
	       (srvkey (alist-ref 'Z spkt)) ;; (alist-ref 'srvkey spkt))
	       (addr  (server-address spkt)))
	  (if (server-ready? uconn host-port srvkey)
	      spkt
	      (loop (cdr tail)))))))

;; am I the "first" in line server? I.e. my D card is smallest
;; use Z card as tie breaker
;;
(define (get-best-candidate serv-pkts dbpath)
  (if (null? serv-pkts)
      #f
      (let loop ((tail serv-pkts)
		 (best  (car serv-pkts)))
	(if (null? tail)
	    best
	    (let* ((candidate (car tail))
		   (candidate-bd (string->number (alist-ref 'D candidate)))
		   (best-bd      (string->number (alist-ref 'D best)))
		   ;; bigger number is younger
		   (candidate-z  (alist-ref 'Z candidate))
		   (best-z       (alist-ref 'Z best))
		   (new-best     (cond
				  ((> best-bd candidate-bd) ;; best is younger than candidate
				   candidate)
				  ((< best-bd candidate-bd) ;; candidate is younger than best
				   best)
				  (else
				   (if (string>=? best-z candidate-z)
				       best
				       candidate))))) ;; use Z card as tie breaker
	      (if (null? tail)
		  new-best
		  (loop (cdr tail) new-best)))))))
	  

;;======================================================================
;; END NEW SERVER METHOD
;;======================================================================

;; if .db/main.db check the pkts
;; 
(define (rmt:wait-for-server pkts-dir db-file server-key)
  (let* ((sdat *db-serv-info*))
    (let loop ((start-time (current-seconds))
	       (changed    #t)
	       (last-sdat  "not this"))
      (begin ;; let ((sdat #f))
	(thread-sleep! 0.01)
	(debug:print-info 0 *default-log-port* "Waiting for server alive signature")
	(mutex-lock! *heartbeat-mutex*)
	(set! sdat *db-serv-info*)
	(mutex-unlock! *heartbeat-mutex*)
	(if (and sdat
		 (not changed)
		 (> (- (current-seconds) start-time) 2))
	    (let* ((uconn (servdat-uconn sdat)))
	      (servdat-status-set! sdat 'iface-stable)
	      (debug:print-info 0 *default-log-port* "Received server alive signature, now attempting to lock in server")
	      ;; create a server pkt in *toppath*/.meta/srvpkts
	      
	      ;; TODO:
	      ;;   1. change sdat to stuct
	      ;;   2. add uuid to struct
	      ;;   3. update uuid in sdat here
	      ;;
	      (servdat-uuid-set! sdat
				 (register-server
				  pkts-dir *srvpktspec*
				  (get-host-name)
				  (servdat-port sdat) server-key
				  (servdat-host sdat) db-file))
	      ;; (set! *my-signature* (servdat-uuid sdat)) ;; replace with Z, no, stick with proper key
	      ;; now read pkts and see if we are a contender
	      (let* ((all-pkts     (get-all-server-pkts pkts-dir *srvpktspec*))
		     (viables      (get-viable-servers all-pkts db-file))
		     (alive        (remove-pkts-if-not-alive uconn viables))
		     (best-srv     (get-best-candidate alive db-file))
		     (best-srv-key (if best-srv (alist-ref 'servkey best-srv) #f))
		     (i-am-srv     (equal? best-srv-key server-key))
		     (delete-pkt   (lambda ()
				     (let* ((pktfile (conc (get-pkts-dir *toppath*)
							 "/" (servdat-uuid *db-serv-info*)
							 ".pkt")))
				       (debug:print-info 0 *default-log-port* "Attempting to remove bogus pkt file "pktfile)
				       (delete-file* pktfile))))) ;; remove immediately instead of waiting for on-exit
		(debug:print 0 *default-log-port* "best-srv-key: "best-srv-key", server-key: "server-key", i-am-srv: "i-am-srv)
		;; am I the best-srv, compare server-keys to know
		(if i-am-srv
		    (if (get-lock-db sdat db-file (servdat-host sdat)(servdat-port sdat)) ;; (db:get-iam-server-lock *dbstruct-db* *toppath* run-id)
			(begin
			  (debug:print-info 0 *default-log-port* "I'm the server!")
			  (servdat-dbfile-set! sdat db-file)
			  (servdat-status-set! sdat 'db-locked))
			(begin
			  (debug:print-info 0 *default-log-port* "I'm not the server, exiting.")
			  (bdat-time-to-exit-set! *bdat* #t)
			  (delete-pkt)
			  (thread-sleep! 0.2)
			  (exit)))
		    (begin
		      (debug:print-info 0 *default-log-port*
				   "Keys do not match "best-srv-key", "server-key", exiting.")
		      (bdat-time-to-exit-set! *bdat* #t)
		      (delete-pkt)
		      (thread-sleep! 0.2)
		      (exit)))
		sdat))
	    (begin ;; sdat not yet contains server info
	      (debug:print-info 0 *default-log-port* "Still waiting, last-sdat=" last-sdat)
	      (sleep 4)
	      (if (> (- (current-seconds) start-time) 120) ;; been waiting for two minutes
		  (begin
		    (debug:print-error 0 *default-log-port* "transport appears to have died, exiting server")
		    (exit))
		  (loop start-time
			(equal? sdat last-sdat)
			sdat))))))))

(define (rmt:register-server sinfo apath iface port server-key dbname)
  (servdat-conns sinfo) ;; just checking types
  (rmt:open-main-connection sinfo apath) ;; we need a channel to main.db
  (rmt:send-receive-real sinfo apath      ;; params: host port servkey pid ipaddr dbpath
			 (db:run-id->dbname #f)
			 'register-server `(,iface
					    ,port
					    ,server-key
					    ,(current-process-id)
					    ,iface
					    ,apath
					    ,dbname)))

(define (rmt:get-count-servers sinfo apath)
  (servdat-conns sinfo) ;; just checking types
  (rmt:open-main-connection sinfo apath) ;; we need a channel to main.db
  (rmt:send-receive-real sinfo apath      ;; params: host port servkey pid ipaddr dbpath
			 (db:run-id->dbname #f)
			 'get-count-servers `(,apath)))

(define (rmt:get-servers-info apath)
  (rmt:send-receive 'get-servers-info #f `(,apath)))

(define (rmt:deregister-server db-serv-info apath iface port server-key dbname)
  (rmt:open-main-connection db-serv-info apath) ;; we need a channel to main.db
  (rmt:send-receive-real db-serv-info apath      ;; params: host port servkey pid ipaddr dbpath
                         (db:run-id->dbname #f)
                         'deregister-server `(,iface
                                              ,port
                                              ,server-key
                                              ,(current-process-id)
                                              ,iface
                                              ,apath
                                              ,dbname)))

(define (rmt:wait-for-stable-interface #!optional (num-tries-allowed 100))
  ;; wait until *db-serv-info* stops changing
  (let* ((stime (current-seconds)))
    (let loop ((last-host  #f)
	       (last-port  #f)
	       (tries 0))
      (let* ((curr-host (and *db-serv-info* (servdat-host *db-serv-info*)))
	     (curr-port (and *db-serv-info* (servdat-port *db-serv-info*))))
	;; first we verify port and interface, update *db-serv-info* in need be.
	(cond
	 ((> tries num-tries-allowed)
	  (debug:print 0 *default-log-port* "rmt:keep-running, giving up after trying for several minutes.")
	  (exit 1))
	 ((not *db-serv-info*)
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((or (not last-host)(not last-port))
	  (debug:print 0 *default-log-port* "rmt:keep-running, still no interface, tries="tries)
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((or (not (equal? last-host curr-host))
	      (not (equal? last-port curr-port)))
	  (debug:print-info 0 *default-log-port* "WARNING: interface changed, refreshing iface and port info")
	  (thread-sleep! 0.25)
	  (loop curr-host curr-port (+ tries 1)))
	 ((< (- (current-seconds) stime) 1) ;; keep up the looping until at least 3 seconds have passed
	  (thread-sleep! 0.5)
	  (loop curr-host curr-port (+ tries 1)))
	 (else
	  (rmt:get-signature) ;; sets *my-signature* as side effect
	  (servdat-status-set! *db-serv-info* 'interface-stable)
	  (debug:print 0 *default-log-port*
		       "SERVER STARTED: " curr-host
		       ":" curr-port
		       " AT " (current-seconds) " server signature: " *my-signature*
		       " with "(servdat-trynum *db-serv-info*)" port changes")
	  (flush-output *default-log-port*)
	  #t))))))

;; run rmt:keep-running in a parallel thread to monitor that the db is being 
;; used and to shutdown after sometime if it is not.
;;
(define (rmt:keep-running dbname) 
  ;; if none running or if > 20 seconds since 
  ;; server last used then start shutdown
  ;; This thread waits for the server to come alive
  (debug:print-info 0 *default-log-port* "Starting the sync-back, keep alive thread in server")

  (let* ((sinfo             *db-serv-info*)
	 (server-start-time (current-seconds))
	 (pkts-dir          (get-pkts-dir))
	 (server-key        (rmt:get-signature)) ;; This servers key
	 (is-main           (equal? (args:get-arg "-db") ".db/main.db"))
	 (last-access       0)
	 (server-timeout    (server:expiration-timeout))
	 (shutdown-server-sequence (lambda (host port)
				     (set! *unclean-shutdown* #f) ;; Should not be needed anymore
				     (debug:print-info 0 *default-log-port* "Starting to shutdown the server. pid="(current-process-id))
				     ;; (rmt:server-shutdown host port) -- called in on-exit
				     ;; (portlogger:open-run-close portlogger:set-port port "released") called in on-exit
				     (exit)))
	 (timed-out?        (lambda ()
			      (<= (+ last-access server-timeout)
				  (current-seconds)))))
    (servdat-dbfile-set! *db-serv-info* (args:get-arg "-db"))
    ;; main and run db servers have both got wait logic (could/should merge it)
    (if is-main
	(rmt:wait-for-server pkts-dir dbname server-key)
	(rmt:wait-for-stable-interface))
    ;; this is our forever loop
    (let* ((iface (servdat-host *db-serv-info*))
	   (port  (servdat-port *db-serv-info*))
	   (uconn (servdat-uconn *db-serv-info*)))
      (let loop ((count          0)
		 (bad-sync-count 0)
		 (start-time     (current-milliseconds)))
	(if (and (not is-main)
		 (common:low-noise-print 60 "servdat-status"))
	    (debug:print-info 0 *default-log-port* "servdat-status is " (servdat-status *db-serv-info*)))

	(mutex-lock! *heartbeat-mutex*)
	;; set up the database handle
	(if (not *dbstruct-db*) ;; no db opened yet, open the db and register with main if appropriate
	      (let ((watchdog (bdat-watchdog *bdat*)))
		(debug:print 0 *default-log-port* "SERVER: dbprep")
		(db:setup dbname) ;; sets *dbstruct-db* as side effect
		(servdat-status-set! *db-serv-info* 'db-opened)
		;; IFF I'm not main, call into main and register self
		(if (not is-main)
		    (let ((res (rmt:register-server sinfo
						    *toppath* iface port
						    server-key dbname)))
		      (if res ;; we are the server
			  (servdat-status-set! *db-serv-info* 'have-interface-and-db)
			  ;; now check that the db locker is alive, clear it out if not
			  (let* ((serv-info (rmt:server-info *toppath* dbname)))
			    (match serv-info
				   ((host port servkey pid ipaddr apath dbpath)
				    (if (not (server-ready? uconn (conc host":"port) servkey))
					(begin
					  (debug:print-info 0 *default-log-port* "Server registered but not alive. Removing and trying again.")
					  (rmt:deregister-server sinfo apath host port servkey dbpath) ;; servkey pid ipaddr apath dbpath)
					  (loop (+ count 1) bad-sync-count start-time))))
				   (else
				    (debug:print 0 *default-log-port* "We are not the server for "dbname", exiting. Server info is: "serv-info)
				    (exit)))))))
		(debug:print 0 *default-log-port*
			     "SERVER: running, db "dbname" opened, megatest version: "
			   (common:get-full-version))
	      ;; start the watchdog

	      ;; is this really needed?
	      
	      #;(if watchdog
		  (if (not (member (thread-state watchdog)
				   '(ready running blocked
					   sleeping dead)))
		      (begin
			(debug:print-info 0 *default-log-port* "Starting watchdog thread (in state "(thread-state watchdog)")")
			(thread-start! watchdog))
		      (debug:print-info 0 *default-log-port* "Not starting watchdog thread (in state "(thread-state watchdog)")"))
		  (debug:print 0 *default-log-port* "ERROR: *watchdog* not setup, cannot start it."))
	      #;(loop (+ count 1) bad-sync-count start-time)
	      ))
	
	(db:sync-inmem->disk *dbstruct-db* *toppath* dbname force-sync: #t)
	
	(mutex-unlock! *heartbeat-mutex*)
	
	;; when things go wrong we don't want to be doing the various
	;; queries too often so we strive to run this stuff only every
	;; four seconds or so.
	(let* ((sync-time (- (current-milliseconds) start-time))
	       (rem-time  (quotient (- 4000 sync-time) 1000)))
	  (if (and (<= rem-time 4)
		   (>  rem-time 0))
	      (thread-sleep! rem-time)))
    
	;; Transfer *db-last-access* to last-access to use in checking that we are still alive
	(set! last-access *db-last-access*)
	
	(if (< count 1) ;; 3x3 = 9 secs aprox
	    (loop (+ count 1) bad-sync-count (current-milliseconds)))
	
	(if (common:low-noise-print 60 "dbstats")
	    (begin
	      (debug:print 0 *default-log-port* "Server stats:")
	      (db:print-current-query-stats)))
	(let* ((hrs-since-start  (/ (- (current-seconds) server-start-time) 3600)))
	  (cond
	   ((not *server-run*)
	    (debug:print-info 0 *default-log-port* "*server-run* set to #f. Shutting down.")
	    (shutdown-server-sequence (get-host-name) port))
	   ((timed-out?)
	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
	    (shutdown-server-sequence (get-host-name) port))
	   ((and *server-run*
		 (or (not (timed-out?))
		     (if is-main ;; do not exit if there are other servers (keep main open until all others gone)
			 (> (rmt:get-count-servers sinfo *toppath*) 1)
			 #f)))
	    (if (common:low-noise-print 120 "server continuing")
		(debug:print-info 0 *default-log-port* "Server continuing, seconds since last db access: " (- (current-seconds) last-access)))
	    (loop 0 bad-sync-count (current-milliseconds)))
	   (else
	    (set! *unclean-shutdown* #f)
	    (debug:print-info 0 *default-log-port* "Server timed out. seconds since last db access: " (- (current-seconds) last-access))
	    (shutdown-server-sequence (get-host-name) port)
	    #;(debug:print-info 0 *default-log-port* "Sending 'quit to server, received: "
			      (open-send-receive-nn (conc iface":"port)      ;; do this here and not in server-shutdown
						    (sexpr->string 'quit))))))))))

(define (rmt:get-reasonable-hostname)
  (let* ((inhost (or (args:get-arg "-server") "-")))
    (if (equal? inhost "-")
	(get-host-name)
	inhost)))

;; Call this to start the actual server
;;
;; all routes though here end in exit ...
;;
;; This is the point at which servers are started
;;
(define (rmt:server-launch dbname)
  (debug:print-info 0 *default-log-port* "Entered rmt:server-launch")
  (let* ((th2 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server run thread started")
			     (rmt:run (rmt:get-reasonable-hostname)))
			   "Server run"))
	 (th3 (make-thread (lambda ()
			     (debug:print-info 0 *default-log-port* "Server monitor thread started")
			     (if (args:get-arg "-server")
				 (rmt:keep-running dbname)))
			     "Keep running")))
    (thread-start! th2)
    (thread-sleep! 0.252) ;; give the server time to settle before starting the keep-running monitor.
    (thread-start! th3)
    (set! *didsomething* #t)
    (thread-join! th2)
    (thread-join! th3))
  #f)
	    
;;======================================================================
;;  S E R V E R   -  D I R E C T   C A L L S
;;======================================================================

(define (rmt:kill-server run-id)
  (rmt:send-receive 'kill-server #f (list run-id)))

(define (rmt:start-server run-id)
  (rmt:send-receive 'start-server #f (list run-id)))

(define (rmt:server-info apath dbname)
  (rmt:send-receive 'get-server-info #f (list apath dbname)))

;;======================================================================
;; Nanomsg transport
;;======================================================================

#;(define (is-port-in-use port-num)
  (let* ((ret #f))
    (let-values (((inp oup pid)
		  (process "netstat" (list  "-tulpn" ))))
      (let loop ((inl (read-line inp)))
        (if (not (eof-object? inl))
            (begin 
	      (if (string-search (regexp (conc ":" port-num)) inl)
		  (begin
					;(print "Output: "  inl)
		    (set! ret  #t))
		  (loop (read-line inp)))))))
    ret))

#;(define (open-nn-connection host-port)
  (let ((req  (make-req-socket))
        (uri  (conc "tcp://" host-port)))
    (nng-dial req uri)
    (socket-set! req 'nng/recvtimeo 2000)
    req))

#;(define (send-receive-nn req msg)
  (nng-send req msg)
  (nng-recv req))

#;(define (close-nn-connection req)
  (nng-close! req))
  
;; ;; open connection to server, send message, close connection
;; ;;
;; (define (open-send-close-nn host-port msg #!key (timeout 3) ) ;; default timeout is 3 seconds
;;   (let ((req  (make-req-socket 'req))
;;         (uri  (conc "tcp://" host-port))
;;         (res  #f)
;;         ;; (contacts (alist-ref 'contact attrib))
;;         ;; (mode (alist-ref 'mode attrib))
;; 	)
;;     (socket-set! req 'nng/recvtimeo 2000)
;;     (handle-exceptions
;;      exn
;;      (let ((emsg ((condition-property-accessor 'exn 'message) exn)))
;;        ;; Send notification       
;;        (debug:print 0 *default-log-port* "ERROR: Failed to connect / send to " uri " message was \"" emsg "\"" )
;;        #f)
;;      (nng-dial req uri)
;;      ;; (print "Connected to the server " )
;;      (nng-send req msg)
;;      ;; (print "Request Sent")  
;;      (let* ((th1  (make-thread (lambda ()
;;                                  (let ((resp (nng-recv req)))
;;                                    (nng-close! req)
;;                                    (set! res (if (equal? resp "ok")
;;                                                  #t
;;                                                  #f))))
;;                                "recv thread"))
;;             (th2 (make-thread (lambda ()
;;                                 (thread-sleep! timeout)
;;                                 (thread-terminate! th1))
;; 			      "timer thread")))
;;        (thread-start! th1)
;;        (thread-start! th2)
;;        (thread-join! th1)
;;        res))))
;; 
#;(define (open-send-receive-nn host-port msg #!key (timeout 3) ) ;; default timeout is 3 seconds
  (let ((req  (make-req-socket))
        (uri  (conc "tcp://" host-port))
        (res  #f)) 
    (handle-exceptions
     exn
     (let ((emsg ((condition-property-accessor 'exn 'message) exn)))
       ;; Send notification      
       (debug:print 0 *default-log-port* "ERROR: Failed to connect / send to " uri " message was \"" emsg "\", exn=" exn)
       #f)
     (nng-dial req uri)
     (nng-send req msg)
     (let* ((th1  (make-thread (lambda ()
                                 (let ((resp (nng-recv req)))
                                   (nng-close! req)
                                   ;; (print resp)
                                   (set! res resp)))
                               "recv thread"))
            (th2 (make-thread (lambda ()
                                (thread-sleep! timeout)
                                (thread-terminate! th1))
                             "timer thread")))
       (thread-start! th1)
       (thread-start! th2)
       (thread-join! th1)
       res))))

;;======================================================================
;; S E R V E R   U T I L I T I E S 
;;======================================================================

;; run ping in separate process, safest way in some cases
;;
#;(define (server:ping-server ifaceport)
  (with-input-from-pipe 
   (conc (common:get-megatest-exe) " -ping " ifaceport)
   (lambda ()
     (let loop ((inl (read-line))
		(res "NOREPLY"))
       (if (eof-object? inl)
	   (case (string->symbol res)
	     ((NOREPLY)  #f)
	     ((LOGIN_OK) #t)
	     (else       #f))
	   (loop (read-line) inl))))))

;; NOT USED (well, ok, reference in rpc-transport but otherwise not used).
;;
#;(define (server:login toppath)
  (lambda (toppath)
    (set! *db-last-access* (current-seconds)) ;; might not be needed.
    (if (equal? *toppath* toppath)
	#t
	#f)))

;; (define server:sync-lock-token "SERVER_SYNC_LOCK")
;; (define (server:release-sync-lock)
;;   (db:no-sync-del! *no-sync-db* server:sync-lock-token))
;; (define (server:have-sync-lock?)
;;   (let* ((have-lock-pair (db:no-sync-get-lock *no-sync-db* server:sync-lock-token))
;;          (have-lock?     (car have-lock-pair))
;;          (lock-time      (cdr have-lock-pair))
;;          (lock-age       (- (current-seconds) lock-time)))
;;     (cond
;;      (have-lock? #t)
;;      ((>lock-age
;;        (* 3 (configf:lookup-number *configdat* "server" "minimum-intersync-delay" default: 180)))
;;       (server:release-sync-lock)
;;       (server:have-sync-lock?))
;;      (else #f))))

)

Deleted ulex/ulex-prev-orig.scm version [42b648b50c].

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;; ulex: Distributed sqlite3 db
;;;
;; Copyright (C) 2018 Matt Welland
;; Redistribution and use in source and binary forms, with or without
;; modification, is permitted.
;;
;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;; ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
;; OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
;; BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
;; USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
;; DAMAGE.

;;======================================================================
;; ABOUT:
;;   See README in the distribution at https://www.kiatoa.com/fossils/ulex
;; NOTES:
;;   Why sql-de-lite and not say, dbi?  - performance mostly, then simplicity.
;;
;;======================================================================

(use mailbox)

(module ulex
 *

(import scheme posix chicken data-structures ports extras files mailbox)
(import srfi-18 pkts matchable regex
	typed-records srfi-69 srfi-1
	srfi-4 regex-case
	(prefix sqlite3 sqlite3:)
	foreign
	tcp6
	;; ulex-netutil
	hostinfo
	)

;; make it a global? Well, it is local to area module

(define *captain-pktspec*
  `((captain (host     . h)
	     (port     . p)
	     (pid      . i)
	     (ipaddr   . a)
	     )
    #;(data   (hostname . h)  ;; sender hostname
	    (port     . p)  ;; sender port
	    (ipaddr   . a)  ;; sender ip
	    (hostkey  . k)  ;; sending host key - store info at server under this key
	    (servkey  . s)  ;; server key - this needs to match at server end or reject the msg
	    (format   . f)  ;; sb=serialized-base64, t=text, sx=sexpr, j=json
	    (data     . d)  ;; base64 encoded slln data
	    )))

;; struct for keeping track of our world

(defstruct udat
  ;; captain info
  (captain-address #f)
  (captain-host    #f)
  (captain-port    #f)
  (captain-pid     #f)
  (captain-lease   0)    ;; time (unix epoc) seconds when the lease is up
  (ulex-dir        (conc (get-environment-variable "HOME") "/.ulex"))
  (cpkts-dir       (conc (get-environment-variable "HOME") "/.ulex/pkts"))
  (cpkt-spec       *captain-pktspec*)
  ;; this processes info
  (my-cpkt-key     #f)   ;; put Z card here when I create a pkt for myself as captain
  (my-address      #f)
  (my-hostname     #f)
  (my-port         #f)
  (my-pid          (current-process-id))
  (my-dbs          '())
  ;; server and handler thread
  (serv-listener   #f)                 ;; this processes server info
  (handler-thread  #f)
  (mboxes          (make-hash-table))  ;; key => mbox
  ;; other servers
  (peers           (make-hash-table))  ;; host-port => peer record
  (dbowners        (make-hash-table))  ;; dbfile => host-port
  (handlers        (make-hash-table))  ;; dbfile => proc
  ;; (outgoing-conns  (make-hash-table))  ;; host:port -> conn
  (work-queue      (make-queue))       ;; most stuff goes here
  ;; (fast-queue      (make-queue))       ;; super quick stuff goes here (e.g. ping)
  (busy            #f)                 ;; is either of the queues busy, use to switch between queuing tasks or doing immediately
  ;; app info
  (appname         #f)
  (dbtypes         (make-hash-table))  ;; this should be an alist but hash is easier. dbtype => [ initproc syncproc ]
  ;; cookies
  (cnum            0) ;; cookie num
  )

;;======================================================================
;; NEW APPROACH
;;======================================================================

;;  start-server-find-port  ;; gotta have a server port ready from the very begining

;; udata    - all the connection info, captain, server, ulex db etc. MUST BE PASSED IN
;; dbpath   - full path and filename of the db to talk to or a symbol naming the db?
;; callname - the remote call to execute
;; params   - parameters to pass to the remote call
;;
(define (remote-call udata dbpath dbtype callname . params)
  (start-server-find-port udata) ;; ensure we have a local server
  (find-or-setup-captain udata)
  ;; look at connect, process-request, send, send-receive
  (let-values (((cookie-key host-port)(get-db-owner udata dbpath dbtype)))
    (send-receive udata host-port callname cookie-key params)))

;;======================================================================
;; KEY FUNCTIONS - THESE ARE TOO BE EXPOSED AND USED
;;======================================================================

;; connection setup and management functions

;; This is the basic setup command. Must always be
;; called before connecting to a db using connect.
;;
;; find or become the captain
;; setup and return a ulex object
;;
(define (find-or-setup-captain udata)
  ;; see if we already have a captain and if the lease is ok
  (if (and (udat-captain-address udata)
	   (udat-captain-port    udata)
	   (< (current-seconds) (udat-captain-lease udata)))
      udata
      (let* ((cpkts (get-all-captain-pkts udata)) ;; read captain pkts
	     (captn (get-winning-pkt cpkts)))
	(if captn
	    (let* ((port   (alist-ref 'port   captn))
		   (host   (alist-ref 'host   captn))
		   (ipaddr (alist-ref 'ipaddr captn))
		   (pid    (alist-ref 'pid    captn))
		   (Z      (alist-ref 'Z      captn)))
	      (udat-captain-address-set! udata ipaddr)
	      (udat-captain-host-set!    udata host)
	      (udat-captain-port-set!    udata port)
	      (udat-captain-pid-set!     udata pid)
	      (udat-captain-lease-set!   udata (+ (current-seconds) 10))
	      (let-values (((success pingtime)(ping udata (conc ipaddr ":" port))))
		(if success
		    udata
		    (begin
		      (print "Found unreachable captain at " ipaddr ":" port ", removing pkt")
		      (remove-captain-pkt udata captn)
		      (find-or-setup-captain udata))))
	      (begin
		(setup-as-captain udata)  ;; this saves the thread to captain-thread and starts the thread
		(find-or-setup-captain udata)))))))

;; connect to a specific dbfile
;;   - if already connected - return the dbowner host-port
;;   - ask the captain who to talk to for this db
;;   - put the entry in the dbowners hash as dbfile => host-port
;;
(define (connect udata dbfname dbtype)
  (or (hash-table-ref/default (udat-dbowners udata) dbfname #f)
      (let-values (((success dbowner-host-port)(get-db-owner udata dbfname dbtype)))
	(if success
	    (begin
	      ;; just clobber the record, this is the new data no matter what
	      (hash-table-set! (udat-dbowners udata) dbfname dbowner-host-port)
	      dbowner-host-port)
	    #f))))

;; returns: success pingtime
;;
;; NOTE: causes the callee to store the info on this host along with the dbs this host currently owns
;;
(define (ping udata host-port)
  (let* ((start  (current-milliseconds))
	 (cookie (make-cookie udata))
	 (dbs    (udat-my-dbs udata))
	 (msg    (string-intersperse dbs " "))
	 (res (send udata host-port 'ping cookie msg retval: #t))
	 (delta (- (current-milliseconds) start)))
    (values (equal? res cookie) delta)))

;; returns: success pingtime
;;
;; NOTE: causes all references to this worker to be wiped out in the
;; callee (ususally the captain)
;;
(define (goodbye-ping udata host-port)
  (let* ((start  (current-milliseconds))
	 (cookie (make-cookie udata))
	 (dbs    (udat-my-dbs udata))
	 (res (send udata host-port 'goodbye cookie "nomsg" retval: #t))
	 (delta (- (current-milliseconds) start)))
    (values (equal? res cookie) delta)))

(define (goodbye-captain udata)
  (let* ((host-port (udat-captain-host-port udata)))
    (if host-port
	(goodbye-ping udata host-port)
	(values #f -1))))

(define (get-db-owner udata dbname dbtype)
  (let* ((host-port (udat-captain-host-port udata)))
    (if host-port
	(let* ((cookie (make-cookie udata))
	       (msg    #f) ;; (conc dbname " " dbtype))
	       (params `(,dbname ,dbtype))
	       (res    (send udata host-port 'db-owner cookie msg
			     params: params retval: #t)))
	  (match (string-split res)
	    ((retcookie owner-host-port)
	     (values (equal? retcookie cookie) owner-host-port))))
	(values #f -1))))

;; called in ulex-handler to dispatch work, called on the workers side
;;     calls (proc params data)
;;     returns result with cookie
;;
;; pdat is the info of the caller, used to send the result data
;; prockey is key into udat-handlers hash dereferencing a proc
;; procparam is a first param handed to proc - often to do further derefrencing
;; NOTE: params is intended to be a list of strings, encoding on data
;;       is up to the user but data must be a single line
;;
(define (process-request udata pdat dbname cookie prockey procparam data)
  (let* ((dbrec (ulex-open-db udata dbname))     ;; this will be a dbconn record, looks for in udata first
	 (proc  (hash-table-ref udata prockey)))
    (let* ((result (proc dbrec procparam data)))
      result)))

;; remote-request - send to remote to process in process-request
;; uconn comes from a call to connect and can be used instead of calling connect again
;; uconn is the host-port to call
;; we send dbname to the worker so they know which file to open
;; data must be a string with no newlines, it will be handed to the proc
;; at the remote site unchanged. It is up to the user to encode/decode it's contents
;;
;;   rtype: immediate, read-only, normal, low-priority
;; 
(define (remote-request udata uconn rtype dbname prockey procparam data)
  (let* ((cookie    (make-cookie udata)))
    (send-receive udata uconn rtype cookie data `(,prockey procparam))))

(define (ulex-open-db udata dbname)
  #f)


;;======================================================================
;; Ulex db
;;
;;   - track who is captain, lease expire time
;;   - track who owns what db, lease
;;
;;======================================================================

;;
;;
(define (ulex-dbfname)
  (let ((dbdir (conc (get-environment-variable "HOME") "/.ulex")))
    (if (not (file-exists? dbdir))
	(create-directory dbdir #t))
    (conc dbdir "/network.db")))
	 
;; always goes in ~/.ulex/network.db
;; role is captain, adjutant, node
;;
(define (ulexdb-setup)
  (let* ((dbfname (ulex-dbfname))
	 (have-db (file-exists? dbfname))
	 (db      (sqlite3:open-database dbfname)))
    (sqlite3:set-busy-handler! db (sqlite3:make-busy-timeout 136000))
    (sqlite3:execute db "PRAGMA synchronous = 0;")
    (if (not have-db)
	(sqlite3:with-transaction
	 db
	 (lambda ()
	   (for-each
	    (lambda (stmt)
	      (if stmt (sqlite3:execute db stmt)))
	    `("CREATE TABLE IF NOT EXISTS nodes
                 (id INTEGER PRIMARY KEY,
                  role  TEXT NOT NULL,
                  host  TEXT NOT NULL,
                  port TEXT NOT NULL,
                  ipadr TEXT NOT NULL,
                  pid   INTEGER NOT NULL,
                  zcard TEXT NOT NULL,
                  regtime INTEGER DEFAULT (strftime('%s','now')),
                  lease_thru INTEGER DEFAULT (strftime('%s','now')),
                  last_update INTEGER DEFAULT (strftime('%s','now')));"
	      "CREATE TRIGGER  IF NOT EXISTS update_nodes_trigger AFTER UPDATE ON nodes
                             FOR EACH ROW
                               BEGIN 
                                 UPDATE nodes SET last_update=(strftime('%s','now'))
                                   WHERE id=old.id;
                               END;"
	      "CREATE TABLE IF NOT EXISTS dbs
                 (id INTEGER PRIMARY KEY,
                  dbname TEXT NOT NULL,
                  dbfile TEXT NOT NULL,
                  dbtype TEXT NOT NULL,
                  host_port TEXT NOT NULL,
                  regtime INTEGER DEFAULT (strftime('%s','now')),
                  lease_thru INTEGER DEFAULT (strftime('%s','now')),
                  last_update INTEGER DEFAULT (strftime('%s','now')));"
	      "CREATE TRIGGER  IF NOT EXISTS update_dbs_trigger AFTER UPDATE ON dbs
                             FOR EACH ROW
                               BEGIN 
                                 UPDATE dbs SET last_update=(strftime('%s','now'))
                                   WHERE id=old.id;
                               END;")))))
    db))

(define (get-host-port-lease db dbfname)
  (sqlite3:fold-row
   (lambda (rem host-port lease-thru)
     (list host-port lease-thru))
   #f db "SELECT host_port,lease_thru FROM dbs WHERE dbfile = ?" dbfname))
  
(define (register-captain db host ipadr port pid zcard #!key (lease 20))
  (let* ((dbfname (ulex-dbfname))
	 (host-port  (conc host ":" port)))
    (sqlite3:with-transaction
     db
     (lambda ()
       (match (get-host-port-lease db dbfname)
	 ((host-port lease-thru)
	  (if (> (current-seconds) lease-thru)
	      (begin
		(sqlite3:execute db "UPDATE dbs SET host_port=?,lease_thru=? WHERE dbname=?"
				 (conc host ":" port)
				 (+ (current-seconds) lease)
				 dbfname)
		#t)
	      #f))
	 (#f  (sqlite3:execute db "INSERT INTO dbs (dbname,dbfile,dbtype,host_port,lease_thru) VALUES (?,?,?,?,?)"
			       "captain" dbfname "captain" host-port (+ (current-seconds) lease)))
	 (else (print "ERROR: Unrecognised result from fold-row")
	       (exit 1)))))))
							    
;;======================================================================
;; network utilities
;;======================================================================

(define (rate-ip ipaddr)
  (regex-case ipaddr
    ( "^127\\..*" _ 0 )
    ( "^(10\\.0|192\\.168)\\..*" _ 1 )
    ( else 2 ) ))

;; Change this to bias for addresses with a reasonable broadcast value?
;;
(define (ip-pref-less? a b)
  (> (rate-ip a) (rate-ip b)))
  

(define (get-my-best-address)
  (let ((all-my-addresses (get-all-ips))
        ;;(all-my-addresses-old (vector->list (hostinfo-addresses (hostname->hostinfo (get-host-name)))))
        )
    (cond
     ((null? all-my-addresses)
      (get-host-name))                                          ;; no interfaces?
     ((eq? (length all-my-addresses) 1)
      (car all-my-addresses))                      ;; only one to choose from, just go with it
     
     (else
      (car (sort all-my-addresses ip-pref-less?)))
     ;; (else 
     ;;  (ip->string (car (filter (lambda (x)                      ;; take any but 127.
     ;;    			 (not (eq? (u8vector-ref x 0) 127)))
     ;;    		       all-my-addresses))))

     )))

(define (get-all-ips-sorted)
  (sort (get-all-ips) ip-pref-less?))

(define (get-all-ips)
  (map ip->string (vector->list 
		   (hostinfo-addresses
		    (host-information (current-hostname))))))

(define (udat-my-host-port udata)
  (if (and (udat-my-address udata)(udat-my-port udata))
      (conc (udat-my-address udata) ":" (udat-my-port udata))
      #f))

(define (udat-captain-host-port udata)
  (if (and (udat-captain-address udata)(udat-captain-port udata))
      (conc (udat-captain-address udata) ":" (udat-captain-port udata))
      #f))

(define (udat-get-peer udata host-port)
  (hash-table-ref/default (udat-peers udata) host-port #f))

;; struct for keeping track of others we are talking to

(defstruct peer
  (addr-port       #f)
  (hostname        #f)
  (pid             #f)
  ;; (inp             #f)
  ;; (oup             #f)
  (dbs            '()) ;; list of databases this peer is currently handling
  )

(defstruct work
  (peer-dat   #f)
  (handlerkey #f)
  (qrykey     #f)
  (data       #f)
  (start      (current-milliseconds)))

#;(defstruct dbowner
  (pdat        #f)
  (last-update (current-seconds)))

;;======================================================================
;; Captain functions
;;======================================================================

;; NB// This needs to be started in a thread
;;
;; setup to be a captain
;;   - local server MUST be started already
;;   - create pkt
;;   - start server port handler
;;
(define (setup-as-captain udata)
  (if (create-captain-pkt udata)
      (let* ((my-addr (udat-my-address udata))
	     (my-port (udat-my-port    udata))
	     (th (make-thread (lambda ()
				(ulex-handler-loop udata)) "Captain handler")))
	(udat-handler-thread-set! udata th)
	(udat-captain-address-set! udata my-addr)
	(udat-captain-port-set!    udata my-port)
	(thread-start! th))
      (begin
	(print "ERROR: failed to create captain pkt")
	#f)))

;; given a pkts dir read 
;;
(define (get-all-captain-pkts udata)
  (let* ((pktsdir       (let ((d (udat-cpkts-dir udata)))
			  (if (file-exists? d)
			      d
			      (begin
				(create-directory d #t)
				d))))
	 (all-pkt-files (glob (conc pktsdir "/*.pkt")))
	 (pkt-spec      (udat-cpkt-spec udata)))
    (map (lambda (pkt-file)
	   (read-pkt->alist pkt-file pktspec: pkt-spec))
	 all-pkt-files)))

;; sort by D then Z, return one, choose the oldest then
;; differentiate if needed using the Z key
;;l
(define (get-winning-pkt pkts)
  (if (null? pkts)
      #f
      (car (sort pkts (lambda (a b)
			(let ((ad (string->number (alist-ref 'D a)))
			      (bd (string->number (alist-ref 'D b))))
			  (if (eq? a b)
			      (let ((az (alist-ref 'Z a))
				    (bz (alist-ref 'Z b)))
				(string>=? az bz))
			      (> ad bd))))))))

;; put the host, ip, port and pid into a pkt in
;; the captain pkts dir
;;  - assumes user has already fired up a server
;;    which will be in the udata struct
;;
(define (create-captain-pkt udata)
  (if (not (udat-serv-listener udata))
      (begin
	(print "ERROR: create-captain-pkt called with out a listener")
	#f)
      (let* ((pktdat `((port   . ,(udat-my-port udata))
		       (host   . ,(udat-my-hostname udata))
		       (ipaddr . ,(udat-my-address udata))
		       (pid    . ,(udat-my-pid     udata))))
	     (pktdir  (udat-cpkts-dir udata))
	     (pktspec (udat-cpkt-spec udata))
	     )
	(udat-my-cpkt-key-set!
	 udata
	 (write-alist->pkt
	  pktdir
	  pktdat
	  pktspec: pktspec
	  ptype:   'captain))
	(udat-my-cpkt-key udata))))

;; remove pkt associated with captn (the Z key .pkt)
;;
(define (remove-captain-pkt udata captn)
  (let ((Z       (alist-ref 'Z captn))
	(cpktdir (udat-cpkts-dir udata)))
    (delete-file* (conc cpktdir "/" Z ".pkt"))))

;; call all known peers and tell them to delete their info on the captain
;; thus forcing them to re-read pkts and connect to a new captain
;; call this when the captain needs to exit and if an older captain is
;; detected. Due to delays in sending file meta data in NFS multiple
;; captains can be initiated in a "Storm of Captains", book soon to be
;; on Amazon
;;
(define (drop-captain udata)
  (let* ((peers (hash-table-keys (udat-peers udata)))
	 (cookie (make-cookie udata)))
    (for-each
     (lambda (host-port)
       (send udata host-port 'dropcaptain cookie "nomsg" retval: #t))
     peers)))

;;======================================================================
;; server primitives
;;======================================================================

(define (make-cookie udata)
  (let ((newcnum (+ (udat-cnum udata) 1)))
    (udat-cnum-set! udata newcnum)
    (conc (udat-my-address udata) ":"
	  (udat-my-port    udata) "-"
	  (udat-my-pid     udata) "-"
	  newcnum)))

;; create a tcp listener and return a populated udat struct with
;; my port, address, hostname, pid etc.
;; return #f if fail to find a port to allocate.
;;
;;  if udata-in is #f create the record
;;  if there is already a serv-listener return the udata
;;
(define (start-server-find-port udata-in #!optional (port 4242))
  (let ((udata (or udata-in (make-udat))))
    (if (udat-serv-listener udata) ;; TODO - add check that the listener is alive and ready?
	udata
	(handle-exceptions
	    exn
	  (if (< port 65535)
	      (start-server-find-port udata (+ port 1))
	      #f)
	  (connect-server udata port)))))

(define (connect-server udata port)
  ;; (tcp-listener-socket LISTENER)(socket-name so)
  ;; sockaddr-address, sockaddr-port, sockaddr->string
  (let* ((tlsn (tcp-listen port 1000 #f)) ;; (tcp-listen TCPPORT [BACKLOG [HOST]])
	 (addr (get-my-best-address))) ;; (hostinfo-addresses (host-information (current-hostname)))
    (udat-my-address-set!    udata addr)
    (udat-my-port-set!       udata port)
    (udat-my-hostname-set!   udata (get-host-name))
    (udat-serv-listener-set! udata tlsn)
    udata))

(define (get-peer-dat udata host-port #!optional (hostname #f)(pid #f))
  (let* ((pdat (or (udat-get-peer udata host-port)
		   (handle-exceptions ;; ERROR - MAKE THIS EXCEPTION HANDLER MORE SPECIFIC
		    exn
		    #f
		    (let ((npdat (make-peer addr-port: host-port)))
		      (if hostname (peer-hostname-set! npdat hostname))
		      (if pid (peer-pid-set! npdat pid))
		      npdat)))))
    pdat))

;; send structured data to recipient
;;
;;  NOTE: qrykey is what was called the "cookie" previously
;;
;;     retval tells send to expect and wait for return data (one line) and return it or time out
;;       this is for ping where we don't want to necessarily have set up our own server yet.
;;
(define (send udata host-port handler qrykey data
	      #!key (hostname #f)(pid #f)(params '())(retval #f))
  (let* ((my-host-port (udat-my-host-port udata))
	 (isme         (equal? host-port my-host-port)) ;; am I calling
							;; myself?
	 (dat          (list
			handler              ;; " "
			my-host-port         ;; " "
			(udat-my-pid  udata) ;; " "
			qrykey
			params ;;(if (null? params) "" (conc " "
			       ;;(string-intersperse params " ")))
			)))
    ;; (print "send isme is " (if isme "true!" "false!") ",
    ;; my-host-port: " my-host-port ", host-port: " host-port)
    (if isme
	(ulex-handler udata dat data)
	(handle-exceptions ;; ERROR - MAKE THIS EXCEPTION HANDLER MORE
			   ;; SPECIFIC
	    exn
	    #f 
	  (let-values (((inp oup)(tcp-connect host-port)))
	    ;;
	    ;; CONTROL LINE:
	    ;;    handlerkey host:port pid qrykey params ...
	    ;;
	    (let ((res
		   (if (and inp oup)
		       (let* ()
			 (if my-host-port
			     (begin
			       (write dat  oup)
			       (write data oup) ;; send as sexpr
			       ;; (print "Sent dat: " dat " data: " data)
			       (if retval
				   (read inp)
				   #t))
			     (begin
			       (print "ERROR: send called but no receiver has been setup. Please call setup first!")
			       #f))
			 ;; NOTE: DO NOT BE TEMPTED TO LOOK AT ANY DATA ON INP HERE!
			 ;;       (there is a listener for handling that)
			 )
		       #f))) ;; #f means failed to connect and send
	      (close-input-port inp)
	      (close-output-port oup)
	      res))))))

;; send a request to the given host-port and register a mailbox in udata
;; wait for the mailbox data and return it
;;
(define (send-receive udata host-port handler qrykey data #!key (hostname #f)(pid #f)(params '())(timeout 20))
  (let ((mbox      (make-mailbox))
	(mbox-time (current-milliseconds))
	(mboxes    (udat-mboxes udata)))
    (hash-table-set! mboxes qrykey mbox)
    (if (send udata host-port handler qrykey data hostname: hostname pid: pid params: params)
	(let* ((mbox-timeout-secs    timeout)
	       (mbox-timeout-result 'MBOX_TIMEOUT)
	       (res                  (mailbox-receive! mbox mbox-timeout-secs mbox-timeout-result))
	       (mbox-receive-time    (current-milliseconds)))
	  (hash-table-delete! mboxes qrykey)
	  (if (eq? res 'MBOX_TIMEOUT)
	      #f
	      res))
	#f))) ;; #f means failed to communicate

;; 
(define (ulex-handler udata controldat data)
  (print "controldat: " controldat " data: " data)
  (match controldat ;;  (string-split controldat)
    ((handlerkey host-port pid qrykey params ...)
     ;; (print "handlerkey: " handlerkey " host-port: " host-port " pid: " pid " qrykey: " qrykey " params: " params)
     (case handlerkey ;; (string->symbol handlerkey)
       ((ack)(print "Got ack!"))
       ((ping) ;; special case - return result immediately on the same connection
	(let* ((proc  (hash-table-ref/default (udat-handlers udata) 'ping #f))
	       (val   (if proc (proc) "gotping"))
	       (peer  (make-peer addr-port: host-port pid: pid))
	       (dbshash (udat-dbowners udata)))
	  (peer-dbs-set! peer params) ;; params for ping is list of dbs owned by pinger
	  (for-each (lambda (dbfile)
		      (hash-table-set! dbshash dbfile host-port)) ;; WRONG?
		    params) ;; register each db in the dbshash
	  (if (not (hash-table-exists? (udat-peers udata) host-port))
	      (hash-table-set! (udat-peers udata) host-port peer)) ;; save the details of this caller in peers
	  qrykey)) ;; End of ping
       ((goodbye)
	;; remove all traces of the caller in db ownership etc.
	(let* ((peer  (hash-table-ref/default (udat-peers udata) host-port #f))
	       (dbs   (if peer (peer-dbs peer) '()))
	       (dbshash (udat-dbowners udata)))
	  (for-each (lambda (dbfile)(hash-table-delete! dbshash dbfile)) dbs)
	  (hash-table-delete! (udat-peers udata) host-port)
	  qrykey))
       ((dropcaptain)
	;; remove all traces of the captain
	(udat-captain-address-set! udata #f)
	(udat-captain-host-set!    udata #f)
	(udat-captain-port-set!    udata #f)
	(udat-captain-pid-set!     udata #f)
	qrykey)
       ((rucaptain) ;; remote is asking if I'm the captain
	(if (udat-my-cpkt-key udata) "yes" "no"))
       ((db-owner) ;; given a db name who do I send my queries to
	;; look up the file in handlers, if have an entry ping them to be sure
	;; they are still alive and then return that host:port.
	;; if no handler found or if the ping fails pick from peers the oldest that
	;; is managing the fewest dbs
	(match params
	  ((dbfile dbtype)
	   (let* ((owner-host-port (hash-table-ref/default (udat-dbowners udata) dbfile #f)))
	     (if owner-host-port
		 (conc qrykey " " owner-host-port)
		 (let* ((pdat (or (hash-table-ref/default (udat-peers udata) host-port #f) ;; no owner - caller gets to own it!
				  (make-peer addr-port: host-port pid: pid dbs: `(,dbfile)))))
		   (hash-table-set! (udat-peers udata) host-port pdat)
		   (hash-table-set! (udat-dbowners udata) dbfile host-port)
		   (conc qrykey " " host-port)))))
	  (else (conc qrykey " BADDATA"))))
       ;; for work items:
       ;;    handler is one of; immediate, read-only, read-write, high-priority
       ((immediate read-only normal low-priority) ;; do this work immediately
	;; host-port (caller), pid (caller), qrykey (cookie), params <= all from first line
	;; data => a single line encoded however you want, or should I build json into it?
	(print "handlerkey=" handlerkey)
	(let* ((pdat (get-peer-dat udata host-port)))
	  (match params ;; dbfile prockey procparam
	    ((dbfile prockey procparam)
	     (case handlerkey
	       ((immediate read-only)
		(process-request udata pdat dbfile qrykey prockey procparam data))
	       ((normal low-priority) ;; split off later and add logic to support low priority
		(add-to-work-queue udata pdat dbfile qrykey prockey procparam data))
	       (else
		#f)))
	    (else
	     (print "INFO: params=" params " handlerkey=" handlerkey " controldat=" controldat)
	     #f))))
       (else
	;; (add-to-work-queue udata (get-peer-dat udata host-port) handlerkey qrykey data)
	#f)))
    (else
     (print "BAD DATA? controldat=" controldat " data=" data)
     #f)));; handles the incoming messages and dispatches to queues

;;
(define (ulex-handler-loop udata)
  (let* ((serv-listener (udat-serv-listener udata)))
    ;; data comes as two lines
    ;;   handlerkey resp-addr:resp-port hostname pid qrykey [dbpath/dbfile.db]
    ;;   data
    (let loop ((state 'start))
      (let-values (((inp oup)(tcp-accept serv-listener)))
	(let* ((controldat (read inp))
	       (data       (read inp))
	       (resp       (ulex-handler udata controldat data)))
	  (if resp (write resp oup))
	  (close-input-port inp)
	  (close-output-port oup))
	(loop state)))))

;; add a proc to the handler list, these are done symetrically (i.e. in all instances)
;; so that the proc can be dereferenced remotely
;;
(define (register-handler udata key proc)
  (hash-table-set! (udat-handlers udata) key proc))


;;======================================================================
;; work queues
;;======================================================================

(define (add-to-work-queue udata peer-dat handlerkey qrykey data)
  (let ((wdat (make-work peer-dat: peer-dat handlerkey: handlerkey qrykey: qrykey data: data)))
    (if (udat-busy udata)
	(queue-add! (udat-work-queue udata) wdat)
	(process-work udata wdat)) ;; passing in wdat tells process-work to first process the passed in wdat
    ))

(define (do-work udata wdat)
  #f)

(define (process-work udata #!optional wdat)
  (if wdat (do-work udata wdat)) ;; process wdat
  (let ((wqueue (udat-work-queue udata)))
    (if (not (queue-empty? wqueue))
	(let loop ((wd (queue-remove! wqueue)))
	  (do-work udata wd)
	  (if (not (queue-empty? wqueue))
	      (loop (queue-remove! wqueue)))))))

;;======================================================================
;; Generic db handling
;;   setup a inmem db instance
;;   open connection to on-disk db
;;   sync on-disk db to inmem
;;   get lock in on-disk db for dbowner of this db
;;   put sync-proc, init-proc, on-disk handle, inmem handle in dbconn stuct
;;   return the stuct
;;======================================================================

(defstruct dbconn
  (fname  #f)
  (inmem  #f)
  (conn   #f)
  (sync   #f) ;; sync proc
  (init   #f) ;; init proc
  (lastsync (current-seconds))
  )

(defstruct dbinfo
  (initproc #f)
  (syncproc #f))

;; open inmem and disk database
;;   init with initproc
;;   return db struct
;;
;;   appname; megatest, ulex or something else.
;;
(define (setup-db-connection udata fname-in appname dbtype)
  (let* ((is-ulex (eq? appname 'ulex))
	 (dbinf   (if is-ulex ;; ulex is a built-in special case
		      (make-dbinfo initproc: ulexdb-init syncproc: ulexdb-sync)
		      (hash-table-ref/default (udat-dbtypes udata) dbtype #f)))
	 (initproc (dbinfo-initproc dbinf))
	 (syncproc (dbinfo-syncproc dbinf))
	 (fname   (if is-ulex
		      (conc (udat-ulex-dir udata) "/ulex.db")
		      fname-in))
	 (inmem-db (open-and-initdb udata #f 'inmem (dbinfo-initproc dbinf)))
	 (disk-db  (open-and-initdb udata fname 'disk (dbinfo-initproc dbinf))))
    (make-dbconn inmem: inmem-db conn: disk-db sync: syncproc init: initproc)))

;; dest='inmem or 'disk
;;
(define (open-and-initdb udata filename dest init-proc)
  (let* ((inmem    (eq? dest 'inmem))
	 (dbfile   (if inmem
		       ":INMEM:"
		       filename))
	 (dbexists (if inmem #t (file-exists? dbfile)))
	 (db       (sqlite3:open-database dbfile)))
    (sqlite3:set-busy-handler! db (sqlite3:make-busy-timeout 136000))
    (if (not dbexists)
	(init-proc db))
    db))


;;======================================================================
;; Previous Ulex db stuff
;;======================================================================

(define (ulexdb-init db inmem)
  (sqlite3:with-transaction
   db
   (lambda ()
     (for-each
      (lambda (stmt)
	(if stmt (sqlite3:execute db stmt)))
      `("CREATE TABLE IF NOT EXISTS processes 
                 (id INTEGER PRIMARY KEY,
                  host  TEXT NOT NULL,
                  ipadr TEXT NOT NULL,
                  port  INTEGER NOT NULL,
                  pid   INTEGER NOT NULL,
                  regtime INTEGER DEFAULT (strftime('%s','now')),
                  last_update INTEGER DEFAULT (strftime('%s','now')));"
	(if inmem
	    "CREATE TRIGGER  IF NOT EXISTS update_proces_trigger AFTER UPDATE ON processes
                             FOR EACH ROW
                               BEGIN 
                                 UPDATE processes SET last_update=(strftime('%s','now'))
                                   WHERE id=old.id;
                               END;"
	    #f))))))

;; open databases, do initial sync
(define (ulexdb-sync dbconndat udata)
  #f)


) ;; END OF ULEX


;;; ;;======================================================================
;;; ;; D E B U G   H E L P E R S
;;; ;;======================================================================
;;;     
;;; (define (dbg> . args)
;;;   (with-output-to-port (current-error-port)
;;;     (lambda ()
;;;       (apply print "dbg> " args))))
;;; 
;;; (define (debug-pp . args)
;;;   (if (get-environment-variable "ULEX_DEBUG")
;;;       (with-output-to-port (current-error-port)
;;; 	(lambda ()
;;; 	  (apply pp args)))))
;;; 
;;; (define *default-debug-port* (current-error-port))
;;; 
;;; (define (sdbg> fn stage-name stage-start stage-end start-time . message)
;;;   (if (get-environment-variable "ULEX_DEBUG")
;;;       (with-output-to-port *default-debug-port* 
;;; 	(lambda ()
;;; 	  (apply print "ulex:" fn " " stage-name " took " (- (if stage-end stage-end (current-milliseconds)) stage-start) " ms. "
;;; 		 (if start-time
;;; 		     (conc "total time " (- (current-milliseconds) start-time)
;;; 			   " ms.")
;;; 		     "")
;;; 		 message
;;; 		 )))))

;;======================================================================
;; M A C R O S
;;======================================================================
;; iup callbacks are not dumping the stack, this is a work-around
;;

;; Some of these routines use:
;;
;;     http://www.cs.toronto.edu/~gfb/scheme/simple-macros.html
;;
;; Syntax for defining macros in a simple style similar to function definiton,
;;  when there is a single pattern for the argument list and there are no keywords.
;;
;; (define-simple-syntax (name arg ...) body ...)
;;
;; 
;; (define-syntax define-simple-syntax
;;   (syntax-rules ()
;;     ((_ (name arg ...) body ...)
;;      (define-syntax name (syntax-rules () ((name arg ...) (begin body ...)))))))
;; 
;; (define-simple-syntax (catch-and-dump proc procname)
;;   (handle-exceptions
;;    exn
;;    (begin
;;      (print-call-chain (current-error-port))
;;      (with-output-to-port (current-error-port)
;;        (lambda ()
;;          (print ((condition-property-accessor 'exn 'message) exn))
;;          (print "Callback error in " procname)
;;          (print "Full condition info:\n" (condition->list exn)))))
;;    (proc)))
;; 
;; 
;;======================================================================
;;  R E C O R D S
;;======================================================================

;;; ;; information about me as a server
;;; ;;
;;; (defstruct area
;;;   ;; about this area
;;;   (useportlogger #f)
;;;   (lowport       32768)
;;;   (server-type   'auto)  ;; auto=create up to five servers/pkts, main=create pkts, passive=no pkt (unless there are no pkts at all)
;;;   (conn          #f)
;;;   (port          #f)
;;;   (myaddr        (get-my-best-address))
;;;   pktid          ;; get pkt from hosts table if needed
;;;   pktfile
;;;   pktsdir
;;;   dbdir
;;;   (dbhandles     (make-hash-table)) ;; fname => list-of-dbh, NOTE: Should really never need more than one?
;;;   (mutex         (make-mutex))
;;;   (rtable        (make-hash-table)) ;; registration table of available actions
;;;   (dbs           (make-hash-table)) ;; filename => random number, used for choosing what dbs I serve
;;;   ;; about other servers
;;;   (hosts         (make-hash-table)) ;; key => hostdat
;;;   (hoststats     (make-hash-table)) ;; key => alist of fname => ( qcount . qtime )
;;;   (reqs          (make-hash-table)) ;; uri => queue
;;;   ;; work queues
;;;   (wqueues       (make-hash-table)) ;; fname => qdat
;;;   (stats         (make-hash-table)) ;; fname => totalqueries
;;;   (last-srvup    (current-seconds)) ;; last time we updated the known servers
;;;   (cookie2mbox   (make-hash-table)) ;; map cookie for outstanding request to mailbox of awaiting call
;;;   (ready #f)
;;;   (health        (make-hash-table)) ;; ipaddr:port => num failed pings since last good ping
;;;   )
;;; 
;;; ;; host stats
;;; ;;
;;; (defstruct hostdat
;;;   (pkt      #f)
;;;   (dbload   (make-hash-table))  ;; "dbfile.db" => queries/min
;;;   (hostload #f)                 ;; normalized load ( 5min load / numcpus )
;;;   )
;;; 
;;; ;; dbdat
;;; ;;
;;; (defstruct dbdat
;;;   (dbh    #f)
;;;   (fname  #f)
;;;   (write-access #f)
;;;   (sths   (make-hash-table))  ;; hash mapping query strings to handles
;;;   )
;;; 
;;; ;; qdat
;;; ;;
;;; (defstruct qdat
;;;   (writeq  (make-queue))
;;;   (readq   (make-queue))
;;;   (rwq     (make-queue))
;;;   (logq    (make-queue)) ;; do we need a queue for logging? yes, if we use sqlite3 db for logging
;;;   (osshort (make-queue))
;;;   (oslong  (make-queue))
;;;   (misc    (make-queue)) ;; used for things like ping-full
;;;   )
;;; 
;;; ;; calldat
;;; ;;
;;; (defstruct calldat
;;;   (ctype 'dbwrite)
;;;   (obj   #f)              ;; this would normally be an SQL statement e.g. SELECT, INSERT etc.
;;;   (rtime (current-milliseconds)))
;;; 
;;; ;; make it a global? Well, it is local to area module
;;; 
;;; (define *pktspec*
;;;   `((server (hostname . h)
;;; 	    (port     . p)
;;; 	    (pid      . i)
;;; 	    (ipaddr   . a)
;;; 	    )
;;;     (data   (hostname . h)  ;; sender hostname
;;; 	    (port     . p)  ;; sender port
;;; 	    (ipaddr   . a)  ;; sender ip
;;; 	    (hostkey  . k)  ;; sending host key - store info at server under this key
;;; 	    (servkey  . s)  ;; server key - this needs to match at server end or reject the msg
;;; 	    (format   . f)  ;; sb=serialized-base64, t=text, sx=sexpr, j=json
;;; 	    (data     . d)  ;; base64 encoded slln data
;;; 	    )))
;;; 
;;; ;; work item
;;; ;;
;;; (defstruct witem
;;;   (rhost #f)   ;; return host
;;;   (ripaddr #f) ;; return ipaddr
;;;   (rport #f)   ;; return port
;;;   (servkey #f) ;; the packet representing the client of this workitem, used by final send-message
;;;   (rdat  #f)   ;; the request - usually an sql query, type is rdat
;;;   (action #f)  ;; the action: immediate, dbwrite, dbread,oslong, osshort
;;;   (cookie #f)  ;; cookie id for response
;;;   (data   #f)  ;; the data payload, i.e. parameters
;;;   (result #f)  ;; the result from processing the data
;;;   (caller #f)) ;; the calling peer according to rpc itself
;;; 
;;; (define (trim-pktid pktid)
;;;   (if (string? pktid)
;;;       (substring pktid 0 4)
;;;       "nopkt"))
;;; 
;;; (define (any->number num)
;;;   (cond
;;;    ((number? num) num)
;;;    ((string? num) (string->number num))
;;;    (else num)))
;;; 
;;; (use trace)
;;; (trace-call-sites #t)
;;; 
;;; ;;======================================================================
;;; ;; D A T A B A S E   H A N D L I N G 
;;; ;;======================================================================
;;; 
;;; ;; look in dbhandles for a db, return it, else return #f
;;; ;;
;;; (define (get-dbh acfg fname)
;;;   (let ((dbh-lst (hash-table-ref/default (area-dbhandles acfg) fname '())))
;;;     (if (null? dbh-lst)
;;; 	(begin
;;; 	  ;; (print "opening db for " fname)
;;; 	  (open-db acfg fname)) ;; Note that the handles get put back in the queue in the save-dbh calls
;;; 	(let ((rem-lst (cdr dbh-lst)))
;;; 	  ;; (print "re-using saved connection for " fname)
;;; 	  (hash-table-set! (area-dbhandles acfg) fname rem-lst)
;;; 	  (car dbh-lst)))))
;;; 
;;; (define (save-dbh acfg fname dbdat)
;;;     ;; (print "saving dbh for " fname)
;;;     (hash-table-set! (area-dbhandles acfg) fname (cons dbdat (hash-table-ref/default (area-dbhandles acfg) fname '()))))
;;; 
;;; ;; open the database, if never before opened init it. put the handle in the
;;; ;; open db's hash table
;;; ;; returns: the dbdat
;;; ;;
;;; (define (open-db acfg fname)
;;;   (let* ((fullname     (conc (area-dbdir acfg) "/" fname))
;;; 	 (exists       (file-exists? fullname))
;;; 	 (write-access (if exists
;;; 			   (file-write-access? fullname)
;;; 			   (file-write-access? (area-dbdir acfg))))
;;; 	 (db           (sqlite3:open-database fullname))
;;; 	 (handler      (sqlite3:make-busy-timeout 136000))
;;; 	 )
;;;     (sqlite3:set-busy-handler! db handler)
;;;     (sqlite3:execute db "PRAGMA synchronous = 0;")
;;;     (if (not exists) ;; need to init the db
;;; 	(if write-access
;;; 	    (let ((isql (get-rsql acfg 'dbinitsql))) ;; get the init sql statements
;;; 	      ;; (sqlite3:with-transaction
;;; 	      ;;  db
;;; 	      ;;  (lambda ()
;;; 		 (if isql
;;; 		     (for-each
;;; 		      (lambda (sql)
;;; 			(sqlite3:execute db sql))
;;; 		      isql)))
;;; 	    (print "ERROR: no write access to " (area-dbdir acfg))))
;;;     (make-dbdat dbh: db fname: fname write-access: write-access)))
;;; 
;;; ;; This is a low-level command to retrieve or to prepare, save and return a prepared statment
;;; ;; you must extract the db handle
;;; ;;
;;; (define (get-sth db cache stmt)
;;;   (if (hash-table-exists? cache stmt)
;;;       (begin
;;; 	;; (print "Reusing cached stmt for " stmt)
;;; 	(hash-table-ref/default cache stmt #f))
;;;       (let ((sth (sqlite3:prepare db stmt)))
;;; 	(hash-table-set! cache stmt sth)
;;; 	;; (print "prepared stmt for " stmt)
;;; 	sth)))
;;; 
;;; ;; a little more expensive but does all the tedious deferencing - only use if you don't already
;;; ;; have dbdat and db sitting around
;;; ;;
;;; (define (full-get-sth acfg fname stmt)
;;;   (let* ((dbdat  (get-dbh acfg fname))
;;; 	 (db     (dbdat-dbh dbdat))
;;; 	 (sths   (dbdat-sths dbdat)))
;;;     (get-sth db sths stmt)))
;;; 
;;; ;; write to a db
;;; ;; acfg: area data
;;; ;; rdat: request data
;;; ;; hdat: (host . port)
;;; ;;
;;; ;; (define (dbwrite acfg rdat hdat data-in)
;;; ;;   (let* ((dbname (car data-in))
;;; ;; 	 (dbdat  (get-dbh acfg dbname))
;;; ;; 	 (db     (dbdat-dbh dbdat))
;;; ;; 	 (sths   (dbdat-sths dbdat))
;;; ;; 	 (stmt   (calldat-obj rdat))
;;; ;; 	 (sth    (get-sth db sths stmt))
;;; ;; 	 (data   (cdr data-in)))
;;; ;;     (print "dbname: " dbname " acfg: " acfg " rdat: " (calldat->alist rdat) " hdat: " hdat " data: " data)
;;; ;;     (print "dbdat: " (dbdat->alist dbdat))
;;; ;;     (apply sqlite3:execute sth data)
;;; ;;     (save-dbh acfg dbname dbdat)
;;; ;;     #t
;;; ;;     ))
;;; 
;;; (define (finalize-all-db-handles acfg)
;;;   (let* ((dbhandles (area-dbhandles acfg))  ;; dbhandles is hash of fname ==> dbdat
;;; 	 (num       0))
;;;     (for-each
;;;      (lambda (area-name)
;;;        (print "Closing handles for " area-name)
;;;        (let ((dbdats (hash-table-ref/default dbhandles area-name '())))
;;; 	 (for-each
;;; 	  (lambda (dbdat)
;;; 	    ;; first close all statement handles
;;; 	    (for-each
;;; 	     (lambda (sth)
;;; 	       (sqlite3:finalize! sth)
;;; 	       (set! num (+ num 1)))
;;; 	     (hash-table-values (dbdat-sths dbdat)))
;;; 	    ;; now close the dbh
;;; 	    (set! num (+ num 1))
;;; 	    (sqlite3:finalize! (dbdat-dbh dbdat)))
;;; 	  dbdats)))
;;;      (hash-table-keys dbhandles))
;;;     (print "FINALIZED " num " dbhandles")))
;;; 
;;; ;;======================================================================
;;; ;; W O R K   Q U E U E   H A N D L I N G 
;;; ;;======================================================================
;;; 
;;; (define (register-db-as-mine acfg dbname)
;;;   (let ((ht (area-dbs acfg)))
;;;     (if (not (hash-table-ref/default ht dbname #f))
;;; 	(hash-table-set! ht dbname (random 10000)))))
;;; 	
;;; (define (work-queue-add acfg fname witem)
;;;   (let* ((work-queue-start (current-milliseconds))
;;; 	 (action           (witem-action witem)) ;; NB the action is the index into the rdat actions
;;; 	 (qdat             (or (hash-table-ref/default (area-wqueues acfg) fname #f)
;;; 			       (let ((newqdat (make-qdat)))
;;; 				 (hash-table-set! (area-wqueues acfg) fname newqdat)
;;; 				 newqdat)))
;;; 	 (rdat             (hash-table-ref/default (area-rtable acfg) action #f)))
;;;     (if rdat
;;; 	(queue-add!
;;; 	 (case (calldat-ctype rdat)
;;; 	   ((dbwrite)   (register-db-as-mine acfg fname)(qdat-writeq qdat))
;;; 	   ((dbread)    (register-db-as-mine acfg fname)(qdat-readq  qdat))
;;; 	   ((dbrw)      (register-db-as-mine acfg fname)(qdat-rwq    qdat))
;;; 	   ((oslong)    (qdat-oslong qdat))
;;; 	   ((osshort)   (qdat-osshort qdat))
;;; 	   ((full-ping) (qdat-misc  qdat))
;;; 	   (else
;;; 	    (print "ERROR: no queue for " action ". Adding to dbwrite queue.")
;;; 	    (qdat-writeq qdat)))
;;; 	 witem)
;;; 	(case action
;;; 	  ((full-ping)(qdat-misc qdat))
;;; 	  (else
;;; 	   (print "ERROR: No action " action " was registered"))))
;;;     (sdbg> "work-queue-add" "queue-add" work-queue-start #f #f)
;;;     #t)) ;; for now, simply return #t to indicate request got to the queue
;;; 
;;; (define (doqueue acfg q fname dbdat dbh)
;;;   ;; (print "doqueue: " fname)
;;;   (let* ((start-time (current-milliseconds))
;;; 	 (qlen       (queue-length q)))
;;;     (if (> qlen 1)
;;; 	(print "Processing queue of length " qlen))
;;;     (let loop ((count      0)
;;; 	       (responses '()))
;;;       (let ((delta (- (current-milliseconds) start-time)))
;;; 	(if (or (queue-empty? q)
;;; 		(> delta 400)) ;; stop working on this queue after 400ms have passed
;;; 	    (list count delta responses) ;; return count, delta and responses list
;;; 	    (let* ((witem  (queue-remove! q))
;;; 		   (action (witem-action witem))
;;; 		   (rdat   (witem-rdat   witem))
;;; 		   (stmt   (calldat-obj rdat))
;;; 		   (sth    (full-get-sth acfg fname stmt))
;;; 		   (ctype  (calldat-ctype rdat))
;;; 		   (data   (witem-data   witem))
;;; 		   (cookie (witem-cookie witem)))
;;; 	      ;; do the processing and save the result in witem-result
;;; 	      (witem-result-set!
;;; 	       witem
;;; 	       (case ctype ;; action
;;; 		 ((noblockwrite) ;; blind write, no ack of success returned
;;; 		  (apply sqlite3:execute sth data)
;;; 		  (sqlite3:last-insert-rowid dbh))
;;; 		 ((dbwrite)      ;; blocking write   
;;; 		  (apply sqlite3:execute sth data)
;;; 		  #t)
;;; 		 ((dbread) ;; TODO: consider breaking this up and shipping in pieces for large query
;;; 		  (apply sqlite3:map-row (lambda x x) sth data))
;;; 		 ((full-ping)  'full-ping)
;;; 		 (else (print "Not ready for action " action) #f)))
;;; 	      (loop (add1 count)
;;; 		    (if cookie
;;; 			(cons witem responses)
;;; 			responses))))))))
;;; 
;;; ;; do up to 400ms of processing on each queue
;;; ;; - the work-queue-processor will allow the max 1200ms of work to complete but it will flag as overloaded
;;; ;; 
;;; (define (process-db-queries acfg fname)
;;;   (if (hash-table-exists? (area-wqueues acfg) fname)
;;;       (let* ((process-db-queries-start-time (current-milliseconds))
;;; 	     (qdat             (hash-table-ref/default (area-wqueues acfg) fname #f))
;;; 	     (queue-sym->queue (lambda (queue-sym)
;;; 				 (case queue-sym  ;; lookup the queue from qdat given a name (symbol)
;;; 				   ((wqueue)  (qdat-writeq qdat))
;;; 				   ((rqueue)  (qdat-readq  qdat))
;;; 				   ((rwqueue) (qdat-rwq    qdat))
;;; 				   ((misc)    (qdat-misc   qdat))
;;; 				   (else #f))))
;;; 	     (dbdat   (get-dbh acfg fname))
;;; 	     (dbh     (if (dbdat? dbdat)(dbdat-dbh dbdat) #f))
;;; 	     (nowtime (current-seconds)))
;;; 	;; handle the queues that require a transaction
;;; 	;;
;;; 	(map ;; 
;;; 	 (lambda (queue-sym)
;;; 	   ;; (print "processing queue " queue-sym)
;;; 	   (let* ((queue (queue-sym->queue queue-sym)))
;;; 	     (if (not (queue-empty? queue))
;;; 		 (let ((responses
;;; 			(sqlite3:with-transaction ;; todo - catch exceptions...
;;; 			 dbh
;;; 			 (lambda ()
;;; 			   (let* ((res (doqueue acfg queue fname dbdat dbh))) ;; this does the work!
;;; 			     ;; (print "res=" res)
;;; 			     (match res
;;; 			      ((count delta responses)
;;; 			       (update-stats acfg fname queue-sym delta count)
;;; 			       (sdbg> "process-db-queries" "sqlite3-transaction" process-db-queries-start-time #f #f)
;;; 			       responses) ;; return responses
;;; 			      (else
;;; 			       (print "ERROR: bad return data from doqueue " res)))
;;; 			     )))))
;;; 		   ;; having completed the transaction, send the responses.
;;; 		   ;; (print "INFO: sending " (length responses) " responses.")
;;; 		   (let loop ((responses-left responses))
;;; 		     (cond
;;; 		      ((null? responses-left)  #t)
;;; 		      (else
;;; 		       (let* ((witem    (car responses-left))
;;; 			      (response (cdr responses-left)))  
;;; 			 (call-deliver-response acfg (witem-ripaddr witem)(witem-rport witem)
;;; 						(witem-cookie witem)(witem-result witem)))
;;; 		       (loop (cdr responses-left))))))
;;; 		 )))
;;; 	 '(wqueue rwqueue rqueue))
;;; 	
;;; 	;; handle misc queue
;;; 	;;
;;; 	;; (print "processing misc queue")
;;; 	(let ((queue (queue-sym->queue 'misc)))
;;; 	  (doqueue acfg queue fname dbdat dbh))
;;; 	;; ....
;;; 	(save-dbh acfg fname dbdat)
;;; 	#t ;; just to let the tests know we got here
;;; 	)
;;;       #f ;; nothing processed
;;;       ))
;;; 
;;; ;; run all queues in parallel per db but sequentially per queue for that db.
;;; ;;  - process the queues every 500 or so ms
;;; ;;  - allow for long running queries to continue but all other activities for that
;;; ;;    db will be blocked.
;;; ;;
;;; (define (work-queue-processor acfg)
;;;   (let* ((threads (make-hash-table))) ;; fname => thread
;;;     (let loop ((fnames      (hash-table-keys (area-wqueues acfg)))
;;; 	       (target-time (+ (current-milliseconds) 50)))
;;;       ;;(if (not (null? fnames))(print "Processing for these databases: " fnames))
;;;       (for-each
;;;        (lambda (fname)
;;; 	 ;; (print "processing for " fname)
;;; 	 ;;(process-db-queries acfg fname))
;;; 	 (let ((th (hash-table-ref/default threads fname #f)))
;;; 	   (if (and th (not (member (thread-state th) '(dead terminated))))
;;; 	       (begin
;;; 		 (print "WARNING: worker thread for " fname " is taking a long time.")
;;; 		 (print "Thread is in state " (thread-state th)))
;;; 	       (let ((th1 (make-thread (lambda ()
;;; 					 ;; (catch-and-dump
;;; 					 ;;  (lambda ()
;;; 					    ;; (print "Process queries for " fname)
;;; 					    (let ((start-time (current-milliseconds)))
;;; 					      (process-db-queries acfg fname)
;;; 					      ;; (thread-sleep! 0.01) ;; need the thread to take at least some time
;;; 					      (hash-table-delete! threads fname)) ;; no mutexes?
;;; 					    fname)
;;; 					  "th1"))) ;; ))
;;; 		 (hash-table-set! threads fname th1)
;;; 		 (thread-start! th1)))))
;;;        fnames)
;;;       ;; (thread-sleep! 0.1) ;; give the threads some time to process requests
;;;       ;; burn time until 400ms is up
;;;       (let ((now-time (current-milliseconds)))
;;; 	(if (< now-time target-time)
;;; 	    (let ((delta (- target-time now-time)))
;;; 	      (thread-sleep! (/ delta 1000)))))
;;;       (loop (hash-table-keys (area-wqueues acfg))
;;; 	    (+ (current-milliseconds) 50)))))
;;; 
;;; ;;======================================================================
;;; ;; S T A T S   G A T H E R I N G
;;; ;;======================================================================
;;; 
;;; (defstruct stat
;;;   (qcount-avg  0)                  ;; coarse running average
;;;   (qtime-avg   0)                  ;; coarse running average
;;;   (qcount      0)                  ;; total
;;;   (qtime       0)                  ;; total
;;;   (last-qcount 0)                  ;; last 
;;;   (last-qtime  0)                  ;; last
;;;   (dbs        '())                 ;; list of db files handled by this node
;;;   (when        0))                 ;; when the last query happened - seconds
;;; 
;;; 
;;; (define (update-stats acfg fname bucket duration numqueries)
;;;   (let* ((key   fname) ;; for now do not use bucket. Was: (conc fname "-" bucket)) ;; lazy but good enough
;;; 	 (stats (or (hash-table-ref/default (area-stats acfg) key #f)
;;; 		    (let ((newstats (make-stat)))
;;; 		      (hash-table-set! (area-stats acfg) key newstats)
;;; 		      newstats))))
;;;     ;; when the last query happended (used to remove the fname from the active list)
;;;     (stat-when-set! stats (current-seconds))
;;;     ;; last values
;;;     (stat-last-qcount-set! stats numqueries)
;;;     (stat-last-qtime-set!  stats duration)
;;;     ;; total over process lifetime
;;;     (stat-qcount-set! stats (+ (stat-qcount stats) numqueries))
;;;     (stat-qtime-set!  stats (+ (stat-qtime  stats) duration))
;;;     ;; coarse average
;;;     (stat-qcount-avg-set! stats (/ (+ (stat-qcount-avg stats) numqueries) 2))
;;;     (stat-qtime-avg-set!  stats (/ (+ (stat-qtime-avg  stats) duration)   2))
;;; 
;;;     ;; here is where we add the stats for a given dbfile
;;;     (if (not (member fname (stat-dbs stats)))
;;; 	(stat-dbs-set! stats (cons fname (stat-dbs stats))))
;;; 
;;;     ))
;;; 
;;; ;;======================================================================
;;; ;; S E R V E R   S T U F F 
;;; ;;======================================================================
;;; 
;;; ;; this does NOT return!
;;; ;;
;;; (define (find-free-port-and-open acfg)
;;;   (let ((port (or (area-port acfg) 3200)))
;;;     (handle-exceptions
;;; 	exn
;;; 	(begin
;;; 	  (print "INFO: cannot bind to port " (rpc:default-server-port) ", trying next port")
;;; 	  (area-port-set! acfg (+ port 1))
;;; 	  (find-free-port-and-open acfg))
;;;       (rpc:default-server-port port)
;;;       (area-port-set! acfg port)
;;;       (tcp-read-timeout 120000)
;;;       ;; ((rpc:make-server (tcp-listen port)) #t)
;;;       (tcp-listen (rpc:default-server-port)
;;;       ))))
;;; 
;;; ;; register this node by putting a packet into the pkts dir.
;;; ;; look for other servers
;;; ;; contact other servers and compile list of servers
;;; ;; there are two types of server
;;; ;;     main servers - dashboards, runners and dedicated servers - need pkt
;;; ;;     passive servers - test executers, step calls, list-runs - no pkt
;;; ;;
;;; (define (register-node acfg hostip port-num)
;;;   ;;(mutex-lock! (area-mutex acfg))
;;;   (let* ((server-type  (area-server-type acfg)) ;; auto, main, passive (no pkt created)
;;; 	 (best-ip      (or hostip (get-my-best-address)))
;;; 	 (mtdir        (area-dbdir acfg))
;;; 	 (pktdir       (area-pktsdir acfg))) ;; conc mtdir "/.server-pkts")))
;;;     (print "Registering node " best-ip ":" port-num)
;;;     (if (not mtdir) ;; require a home for this node to put or find databases
;;; 	#f
;;; 	(begin
;;; 	  (if  (not (directory? pktdir))(create-directory pktdir))
;;; 	  ;; server is started, now create pkt if needed
;;; 	  (print "Starting server in " server-type " mode with port " port-num)
;;; 	  (if (member server-type '(auto main)) ;; TODO: if auto, count number of servers registers, if > 3 then don't put out a pkt
;;; 	      (begin
;;; 		(area-pktid-set! acfg
;;; 				 (write-alist->pkt
;;; 				  pktdir 
;;; 				  `((hostname . ,(get-host-name))
;;; 				    (ipaddr   . ,best-ip)
;;; 				    (port     . ,port-num)
;;; 				    (pid      . ,(current-process-id)))
;;; 				  pktspec: *pktspec*
;;; 				  ptype:   'server))
;;; 		(area-pktfile-set! acfg (conc pktdir "/" (area-pktid acfg) ".pkt"))))
;;; 	  (area-port-set!    acfg port-num)
;;; 	  #;(mutex-unlock! (area-mutex acfg))))))
;;; 
;;; (define *cookie-seqnum* 0)
;;; (define (make-cookie key)
;;;   (set! *cookie-seqnum* (add1 *cookie-seqnum*))
;;;   ;;(print "MAKE COOKIE CALLED -- on "servkey"-"*cookie-seqnum*)
;;;   (conc key "-" *cookie-seqnum*)
;;;   )
;;; 
;;; ;; dispatch locally if possible
;;; ;;
;;; (define (call-deliver-response acfg ipaddr port cookie data)
;;;   (if (and (equal? (area-myaddr acfg) ipaddr)
;;; 	   (equal? (area-port     acfg) port))
;;;       (deliver-response acfg cookie data)
;;;       ((rpc:procedure 'response ipaddr port) cookie data)))
;;; 
;;; (define (deliver-response acfg cookie data)
;;;   (let ((deliver-response-start (current-milliseconds)))
;;;     (thread-start! (make-thread
;;; 		    (lambda ()
;;; 		      (let loop ((tries-left 5))
;;; 			;;(print "TOP OF DELIVER_RESPONSE LOOP; triesleft="tries-left)
;;; 			;;(pp (hash-table->alist (area-cookie2mbox acfg)))
;;; 			(let* ((mbox (hash-table-ref/default (area-cookie2mbox acfg) cookie #f)))
;;; 			  (cond
;;; 			   ((eq? 0 tries-left)
;;; 			    (print "ulex:deliver-response: I give up. Mailbox never appeared. cookie="cookie)
;;; 			    )
;;; 			   (mbox
;;; 			    ;;(print "got mbox="mbox"  got data="data"  send.")
;;; 			    (mailbox-send! mbox data))
;;; 			   (else
;;; 			    ;;(print "no mbox yet.  look for "cookie)
;;; 			    (thread-sleep! (/ (- 6 tries-left) 10))
;;; 			    (loop (sub1 tries-left))))))
;;; 		      ;; (debug-pp (list (conc "ulex:deliver-response took " (- (current-milliseconds) deliver-response-start) " ms, cookie=" cookie " data=") data))
;;; 		      (sdbg> "deliver-response" "mailbox-send" deliver-response-start #f #f cookie)
;;; 		      )
;;; 		    (conc "deliver-response thread for cookie="cookie))))
;;;   #t)
;;; 
;;; ;; action:
;;; ;;   immediate - quick actions, no need to put in queues
;;; ;;   dbwrite   - put in dbwrite queue
;;; ;;   dbread    - put in dbread queue
;;; ;;   oslong    - os actions, e.g. du, that could take a long time
;;; ;;   osshort   - os actions that should be quick, e.g. df
;;; ;;
;;; (define (request acfg from-ipaddr from-port servkey action cookie fname params) ;; std-peer-handler
;;;   ;; NOTE: Use rpc:current-peer for getting return address
;;;   (let* ((std-peer-handler-start (current-milliseconds))
;;; 	 ;; (raw-data               (alist-ref 'data     dat))
;;; 	 (rdat                   (hash-table-ref/default
;;; 				  (area-rtable acfg) action #f)) ;; this looks up the sql query or other details indexed by the action
;;; 	 (witem                  (make-witem ripaddr: from-ipaddr ;; rhost:   from-host   
;;; 					     rport:   from-port   action:  action
;;; 					     rdat:    rdat        cookie:  cookie
;;; 					     servkey: servkey     data:    params ;; TODO - rename data to params
;;; 					     caller:  (rpc:current-peer))))
;;;     (if (not (equal? servkey (area-pktid acfg)))
;;; 	`(#f . ,(conc "I don't know you servkey=" servkey ", pktid=" (area-pktid acfg))) ;; immediately return this
;;; 	(let* ((ctype (if rdat 
;;; 			  (calldat-ctype rdat) ;; is this necessary? these should be identical
;;; 			  action)))
;;; 	  (sdbg> "std-peer-handler" "immediate" std-peer-handler-start #f #f)
;;; 	  (case ctype
;;; 	    ;; (dbwrite acfg rdat (cons from-ipaddr from-port) data)))
;;; 	    ((full-ping)  `(#t  "ack to full ping"        ,(work-queue-add acfg fname witem) ,cookie))
;;; 	    ((response)   `(#t  "ack from requestor"      ,(deliver-response acfg fname params)))
;;; 	    ((dbwrite)    `(#t  "db write submitted"      ,(work-queue-add acfg fname witem) ,cookie))
;;; 	    ((dbread)     `(#t  "db read submitted"       ,(work-queue-add acfg fname witem) ,cookie  ))
;;; 	    ((dbrw)       `(#t  "db read/write submitted" ,cookie))
;;; 	    ((osshort)    `(#t  "os short submitted"      ,cookie))
;;; 	    ((oslong)     `(#t  "os long submitted"       ,cookie))
;;; 	    (else         `(#f  "unrecognised action"     ,ctype)))))))
;;; 
;;; ;; Call this to start the actual server
;;; ;;
;;; ;; start_server
;;; ;;
;;; ;;   mode: '
;;; ;;   handler: proc which takes pktrecieved as argument
;;; ;;
;;; 
;;; (define (start-server acfg)
;;;   (let* ((conn (find-free-port-and-open acfg))
;;; 	 (port (area-port acfg)))
;;;     (rpc:publish-procedure!
;;;      'delist-db
;;;      (lambda (fname)
;;;        (hash-table-delete! (area-dbs acfg) fname)))
;;;     (rpc:publish-procedure!
;;;      'calling-addr
;;;      (lambda ()
;;;        (rpc:current-peer)))
;;;     (rpc:publish-procedure!
;;;      'ping
;;;      (lambda ()(real-ping acfg)))
;;;     (rpc:publish-procedure!
;;;      'request
;;;      (lambda (from-addr from-port servkey action cookie dbname params)
;;;        (request acfg from-addr from-port servkey action cookie dbname params)))
;;;     (rpc:publish-procedure!
;;;      'response
;;;      (lambda (cookie res-dat)
;;;        (deliver-response acfg cookie res-dat)))
;;;     (area-ready-set! acfg #t)
;;;     (area-conn-set! acfg conn)
;;;     ((rpc:make-server conn) #f)));; ((tcp-listen (rpc:default-server-port)) #t)
;;; 
;;; 
;;; (define (launch acfg) ;;  #!optional (proc std-peer-handler))
;;;   (print "starting launch")
;;;   (update-known-servers acfg) ;; gotta do this on every start (thus why limit number of publicised servers)
;;;   #;(let ((original-handler (current-exception-handler))) ;; is th
;;;     (lambda (exception)
;;;       (server-exit-procedure)
;;;       (original-handler exception)))
;;;   (on-exit (lambda ()
;;; 	     (shutdown acfg))) ;; (finalize-all-db-handles acfg)))
;;;   ;; set up the rpc handler
;;;   (let* ((th1  (make-thread
;;; 		(lambda ()(start-server acfg))
;;; 		"server thread"))
;;; 	 (th2   (make-thread
;;; 		 (lambda ()
;;; 		   (print "th2 starting")
;;; 		   (let loop ()
;;; 		     (work-queue-processor acfg)
;;; 		     (print "work-queue-processor crashed!")
;;; 		     (loop)))
;;; 		 "work queue thread")))
;;;     (thread-start! th1)
;;;     (thread-start! th2)
;;;     (let loop ()
;;;       (thread-sleep! 0.025)
;;;       (if (area-ready acfg)
;;; 	  #t
;;; 	  (loop)))
;;;     ;; attempt to fix my address
;;;     (let* ((all-addr (get-all-ips-sorted)))	     ;; could use (tcp-addresses conn)?
;;;       (let loop ((rem-addrs all-addr))
;;; 	(if (null? rem-addrs)
;;; 	    (begin
;;; 	      (print "ERROR: Failed to figure out the ip address of myself as a server. Giving up.")
;;; 	      (exit 1)) ;; BUG Changeme to raising an exception
;;; 		
;;; 	    (let* ((addr      (car rem-addrs))
;;; 		   (good-addr (handle-exceptions
;;; 				  exn
;;; 				  #f
;;; 				((rpc:procedure 'calling-addr addr (area-port acfg))))))
;;; 	      (if good-addr
;;; 		  (begin
;;; 		    (print "Got good-addr of " good-addr)
;;; 		    (area-myaddr-set! acfg good-addr))
;;; 		  (loop (cdr rem-addrs)))))))
;;;     (register-node acfg (area-myaddr acfg)(area-port acfg))
;;;     (print "INFO: Server started on " (area-myaddr acfg) ":" (area-port acfg))
;;;     ;; (update-known-servers acfg) ;; gotta do this on every start (thus why limit number of publicised servers)
;;;     ))
;;; 
;;; (define (clear-server-pkt acfg)
;;;   (let ((pktf (area-pktfile acfg)))
;;;     (if pktf (delete-file* pktf))))
;;; 
;;; (define (shutdown acfg)
;;;   (let (;;(conn (area-conn    acfg))
;;; 	(pktf (area-pktfile acfg))
;;; 	(port (area-port    acfg)))
;;;     (if pktf (delete-file* pktf))
;;;     (send-all "imshuttingdown")
;;;     ;; (rpc:close-all-connections!) ;; don't know if this is actually needed
;;;     (finalize-all-db-handles acfg)))
;;; 
;;; (define (send-all msg)
;;;   #f)
;;; 
;;; ;; given a area record look up all the packets
;;; ;;
;;; (define (get-all-server-pkts acfg)
;;;   (let ((all-pkt-files (glob (conc (area-pktsdir acfg) "/*.pkt"))))
;;;     (map (lambda (pkt-file)
;;; 	   (read-pkt->alist pkt-file pktspec: *pktspec*))
;;; 	 all-pkt-files)))
;;; 
;;; #;((Z . "9a0212302295a19610d5796fce0370fa130758e9")
;;;   (port . "34827")
;;;   (pid . "28748")
;;;   (hostname . "zeus")
;;;   (T . "server")
;;;   (D . "1549427032.0"))
;;; 
;;; #;(define (get-my-best-address)
;;;   (let ((all-my-addresses (get-all-ips))) ;; (vector->list (hostinfo-addresses (hostname->hostinfo (get-host-name))))))
;;;     (cond
;;;      ((null? all-my-addresses)
;;;       (get-host-name))                                          ;; no interfaces?
;;;      ((eq? (length all-my-addresses) 1)
;;;       (ip->string (car all-my-addresses)))                      ;; only one to choose from, just go with it
;;;      (else 
;;;       (ip->string (car (filter (lambda (x)                      ;; take any but 127.
;;; 				 (not (eq? (u8vector-ref x 0) 127)))
;;; 			       all-my-addresses)))))))
;;; 
;;; ;; whoami? I am my pkt
;;; ;;
;;; (define (whoami? acfg)
;;;   (hash-table-ref/default (area-hosts acfg)(area-pktid acfg) #f))
;;; 
;;; ;;======================================================================
;;; ;; "Client side" operations
;;; ;;======================================================================
;;; 
;;; (define (safe-call call-key host port . params)
;;;   (handle-exceptions
;;;    exn
;;;    (begin
;;;      (print "Call " call-key " to " host ":" port " failed")
;;;      #f)
;;;    (apply (rpc:procedure call-key host port) params)))
;;; 
;;; ;; ;; convert to/from string / sexpr
;;; ;; 
;;; ;; (define (string->sexpr str)
;;; ;;   (if (string? str)
;;; ;;       (with-input-from-string str read)
;;; ;;       str))
;;; ;; 
;;; ;; (define (sexpr->string s)
;;; ;;   (with-output-to-string (lambda ()(write s))))
;;; 
;;; ;; is the server alive?
;;; ;;
;;; (define (ping acfg host port)
;;;   (let* ((myaddr     (area-myaddr acfg))
;;; 	 (myport     (area-port   acfg))
;;; 	 (start-time (current-milliseconds))
;;; 	 (res        (if (and (equal? myaddr host)
;;; 			      (equal? myport port))
;;; 			 (real-ping acfg)
;;; 			 ((rpc:procedure 'ping host port)))))
;;;     (cons (- (current-milliseconds) start-time)
;;; 	  res)))
;;; 
;;; ;; returns ( ipaddr port alist-fname=>randnum )
;;; (define (real-ping acfg)
;;;   `(,(area-myaddr acfg) ,(area-port acfg) ,(get-host-stats acfg)))
;;; 
;;; ;; is the server alive AND the queues processing?
;;; ;;
;;; #;(define (full-ping acfg servpkt)
;;;   (let* ((start-time (current-milliseconds))
;;; 	 (res        (send-message acfg servpkt '(full-ping) 'full-ping)))
;;;     (cons (- (current-milliseconds) start-time)
;;; 	  res))) ;; (equal? res "got ping"))))
;;; 
;;; 
;;; ;; look up all pkts and get the server id (the hash), port, host/ip
;;; ;; store this info in acfg
;;; ;; return the number of responsive servers found
;;; ;;
;;; ;; DO NOT VERIFY THAT THE SERVER IS ALIVE HERE. This is called at times where the current server is not yet alive and cannot ping itself
;;; ;;
;;; (define (update-known-servers acfg)
;;;   ;; readll all pkts
;;;   ;; foreach pkt; if it isn't me ping the server; if alive, add to hosts hash, else rm the pkt
;;;   (let* ((start-time (current-milliseconds))
;;; 	 (all-pkts  (delete-duplicates
;;; 		     (append (get-all-server-pkts acfg)
;;; 			     (hash-table-values (area-hosts acfg)))))
;;; 	 (hostshash (area-hosts acfg))
;;; 	 (my-id     (area-pktid acfg))
;;; 	 (pktsdir   (area-pktsdir acfg)) ;; needed to remove pkts from non-responsive servers
;;; 	 (numsrvs   0)
;;; 	 (delpkt    (lambda (pktsdir sid)
;;; 		      (print "clearing out server " sid)
;;; 		      (delete-file* (conc pktsdir "/" sid ".pkt"))
;;; 		      (hash-table-delete! hostshash sid))))
;;;     (area-last-srvup-set! acfg (current-seconds))
;;;     (for-each
;;;      (lambda (servpkt)
;;;        (if (list? servpkt)
;;; 	   ;; (pp servpkt)
;;; 	   (let* ((shost (alist-ref 'ipaddr servpkt))
;;; 		  (sport (any->number (alist-ref 'port servpkt)))
;;; 		  (res   (handle-exceptions
;;; 			  exn
;;; 			  (begin
;;; 			    ;; (print "INFO: bad server on " shost ":" sport)
;;; 			    #f)
;;; 			  (ping acfg shost sport)))
;;; 		  (sid   (alist-ref 'Z servpkt)) ;; Z code is our name for the server
;;; 		  (url   (conc shost ":" sport))
;;; 		  )
;;; 	     #;(if (or (not res)
;;; 		     (null? res))
;;; 		 (begin
;;; 		   (print "STRANGE: ping of " url " gave " res)))
;;; 	     
;;; 	     ;; (print "Got " res " from " shost ":" sport)
;;; 	     (match res
;;; 		    ((qduration . payload)
;;; 		     ;; (print "Server pkt:" (alist-ref 'ipaddr servpkt) ":" (alist-ref 'port servpkt)
;;; 		     ;;        (if payload
;;; 		     ;;            "Success" "Fail"))
;;; 		     (match payload
;;; 			    ((host port stats)
;;; 			     ;; (print "From " host ":" port " got stats: " stats)
;;; 			     (if (and host port stats)
;;; 				 (let ((url (conc host ":" port)))
;;; 				   (hash-table-set! hostshash sid servpkt)
;;; 				   ;; store based on host:port
;;; 				   (hash-table-set! (area-hoststats acfg) sid stats))
;;; 				 (print "missing data from the server, not sure what that means!"))
;;; 			     (set! numsrvs (+ numsrvs 1)))
;;; 			    (#f
;;; 			     (print "Removing pkt " sid " due to #f from server or failed ping")
;;; 			     (delpkt pktsdir sid))
;;; 			    (else
;;; 			     (print "Got ")(pp res)(print " from server ")(pp servpkt) " but response did not match (#f/#t . msg)")))
;;; 		    (else
;;; 		     ;; here we delete the pkt - can't reach the server, remove it
;;; 		     ;; however this logic is inadequate. we should mark the server as checked
;;; 		     ;; and not good, if it happens a second time - then remove the pkt
;;; 		     ;; or something similar. I.e. don't be too quick to assume the server is wedged or dead
;;; 		     ;; could be it is simply too busy to reply
;;; 		     (let ((bad-pings (hash-table-ref/default (area-health acfg) url 0)))
;;; 		       (if (> bad-pings 1) ;; two bad pings - remove pkt
;;; 			   (begin
;;; 			     (print "INFO: " bad-pings " bad responses from " url ", deleting pkt " sid)
;;; 			     (delpkt pktsdir sid))
;;; 			   (begin
;;; 			     (print "INFO: " bad-pings " bad responses from " shost ":" sport " not deleting pkt yet")
;;; 			     (hash-table-set! (area-health acfg)
;;; 					      url
;;; 					      (+ (hash-table-ref/default (area-health acfg) url 0) 1))
;;; 			     ))
;;; 		       ))))
;;; 	   ;; servpkt is not actually a pkt?
;;; 	   (begin
;;; 	     (print "Bad pkt " servpkt))))
;;;      all-pkts)
;;;     (sdbg> "update-known-servers" "end" start-time #f #f " found " numsrvs
;;; 	   " servers, pkts: " (map (lambda (p)
;;; 				     (alist-ref 'Z p))
;;; 				   all-pkts))
;;;     numsrvs))
;;; 
;;; (defstruct srvstat
;;;   (numfiles 0)   ;; number of db files handled by this server - subtract 1 for the db being currently looked at
;;;   (randnum  #f)  ;; tie breaker number assigned to by the server itself - applies only to the db under consideration
;;;   (pkt      #f)) ;; the server pkt
;;; 
;;; ;;(define (srv->srvstat srvpkt)
;;;   
;;; ;; Get the server best for given dbname and key
;;; ;;
;;; ;;   NOTE: key is not currently used. The key points to the kind of query, this may be useful for directing read-only queries.
;;; ;;
;;; (define (get-best-server acfg dbname key)
;;;   (let* (;; (servers (hash-table-values (area-hosts acfg)))
;;; 	 (servers     (area-hosts acfg))
;;; 	 (skeys       (sort (hash-table-keys servers) string>=?)) ;; a stable listing
;;; 	 (start-time  (current-milliseconds))
;;; 	 (srvstats    (make-hash-table))  ;; srvid => srvstat
;;; 	 (url         (conc (area-myaddr acfg) ":" (area-port acfg))))
;;;     ;; (print "scores for " dbname ": " (map (lambda (k)(cons k (calc-server-score acfg dbname k))) skeys))
;;;     (if (null? skeys)
;;; 	(if (> (update-known-servers acfg) 0)
;;; 	    (get-best-server acfg dbname key) ;; some risk of infinite loop here, TODO add try counter
;;; 	    (begin
;;; 	      (print "ERROR: no server found!") ;; since this process is also a server this should never happen
;;; 	      #f))
;;; 	(begin
;;; 	  ;; (print "in get-best-server with skeys=" skeys)
;;; 	  (if (> (- (current-seconds) (area-last-srvup acfg)) 10)
;;; 	      (begin
;;; 		(update-known-servers acfg)
;;; 		(sdbg> "get-best-server" "update-known-servers" start-time #f #f)))
;;; 
;;; 	  ;; for each server look at the list of dbfiles, total number of dbs being handled
;;; 	  ;; and the rand number, save the best host
;;; 	  ;; also do a delist-db for each server dbfile not used
;;; 	  (let* ((best-server       #f)
;;; 		 (servers-to-delist (make-hash-table)))
;;; 	    (for-each
;;; 	     (lambda (srvid)
;;; 	       (let* ((server    (hash-table-ref/default servers srvid #f))
;;; 		      (stats     (hash-table-ref/default (area-hoststats acfg) srvid '(()))))
;;; 		 ;; (print "stats: " stats)
;;;  		 (if server
;;; 		     (let* ((dbweights (car stats))
;;; 			    (srvload   (length (filter (lambda (x)(not (equal? dbname (car x)))) dbweights)))
;;; 			    (dbrec     (alist-ref dbname dbweights equal?))  ;; get the pair with fname . randscore
;;; 			    (randnum   (if dbrec
;;; 					   dbrec ;; (cdr dbrec)
;;; 					   0)))
;;; 		       (hash-table-set! srvstats srvid (make-srvstat numfiles: srvload randnum: randnum pkt: server))))))
;;; 	     skeys)
;;; 	    
;;; 	    (let* ((sorted    (sort (hash-table-values srvstats) 
;;; 				    (lambda (a b)
;;; 				      (let ((numfiles-a (srvstat-numfiles a))
;;; 					    (numfiles-b (srvstat-numfiles b))
;;; 					    (randnum-a  (srvstat-randnum a))
;;; 					    (randnum-b  (srvstat-randnum b)))
;;; 					(if (< numfiles-a numfiles-b) ;; Note, I don't think adding an offset works here. Goal was only move file handling to a different server if it has 2 less
;;; 					    #t
;;; 					    (if (and (equal? numfiles-a numfiles-b)
;;; 						     (< randnum-a randnum-b))
;;; 						#t
;;; 						#f))))))
;;; 		   (best      (if (null? sorted)
;;; 				  (begin
;;; 				    (print "ERROR: should never be null due to self as server.")
;;; 				    #f)
;;; 				  (srvstat-pkt (car sorted)))))
;;; 	      #;(print "SERVER(" url "): " dbname ": " (map (lambda (srv)
;;; 							    (let ((p (srvstat-pkt srv)))
;;; 							      (conc (alist-ref 'ipaddr p) ":" (alist-ref 'port p)
;;; 								    "(" (srvstat-numfiles srv)","(srvstat-randnum srv)")")))
;;; 							    sorted))
;;; 	      best))))))
;;;     
;;;     ;; send out an "I'm about to exit notice to all known servers"
;;;     ;;
;;; (define (death-imminent acfg)
;;;   '())
;;; 
;;; ;;======================================================================
;;; ;; U L E X  -  T H E   I N T E R E S T I N G   S T U F F ! !
;;; ;;======================================================================
;;; 
;;; ;; register a handler
;;; ;;   NOTES:
;;; ;;     dbinitsql   is reserved for a list of sql statements for initializing the db
;;; ;;     dbinitfn    is reserved for a db init function, if exists called after dbinitsql
;;; ;;     
;;; (define (register acfg key obj #!optional (ctype 'dbwrite))
;;;   (let ((ht (area-rtable acfg)))
;;;     (if (hash-table-exists? ht key)
;;; 	(print "WARNING: redefinition of entry " key))
;;;     (hash-table-set! ht key (make-calldat obj: obj ctype: ctype))))
;;; 
;;; ;; usage: register-batch acfg '((key1 . sql1) (key2 . sql2) ... )
;;; ;; NB// obj is often an sql query
;;; ;;
;;; (define (register-batch acfg ctype data)
;;;   (let ((ht (area-rtable acfg)))
;;;     (map (lambda (dat)
;;; 	   (hash-table-set! ht (car dat)(make-calldat obj: (cdr dat) ctype: ctype)))
;;; 	 data)))
;;; 
;;; (define (initialize-area-calls-from-specfile area specfile)
;;;   (let* ((callspec (with-input-from-file specfile read )))
;;;     (for-each (lambda (group)
;;;                 (register-batch
;;;                  area
;;;                  (car group)
;;;                  (cdr group)))
;;;               callspec)))
;;; 
;;; ;; get-rentry
;;; ;;
;;; (define (get-rentry acfg key)
;;;   (hash-table-ref/default (area-rtable acfg) key #f))
;;; 
;;; (define (get-rsql acfg key)
;;;   (let ((cdat (get-rentry acfg key)))
;;;     (if cdat
;;; 	(calldat-obj cdat)
;;; 	#f)))
;;; 
;;; 
;;; 
;;; ;; blocking call:
;;; ;;    client                         server
;;; ;;    ------                         ------
;;; ;;    call()
;;; ;;    send-message()
;;; ;;    nmsg-send()
;;; ;;                                   nmsg-receive()
;;; ;;                                   nmsg-respond(ack,cookie)
;;; ;;    ack, cookie
;;; ;;    mbox-thread-wait(cookie)
;;; ;;                                   nmsg-send(client,cookie,result)
;;; ;;        nmsg-respond(ack)
;;; ;;        return result
;;; ;;
;;; ;; reserved action:
;;; ;;    'immediate
;;; ;;    'dbinitsql
;;; ;;
;;; (define (call acfg dbname action params #!optional (count 0))
;;;   (let* ((call-start-time     (current-milliseconds))
;;; 	 (srv                 (get-best-server acfg dbname action))
;;; 	 (post-get-start-time (current-milliseconds))
;;; 	 (rdat                (hash-table-ref/default (area-rtable acfg) action #f))
;;; 	 (myid                (trim-pktid (area-pktid acfg)))
;;; 	 (srvid               (trim-pktid (alist-ref 'Z srv)))
;;; 	 (cookie              (make-cookie myid)))
;;;     (sdbg> "call" "get-best-server" call-start-time #f call-start-time " from: " myid " to server: " srvid " for " dbname " action: " action " params: " params " rdat: " rdat)
;;;     (print "INFO: call to " (alist-ref 'ipaddr srv) ":" (alist-ref 'port srv) " from " (area-myaddr acfg) ":" (area-port acfg) " for " dbname)
;;;     (if (and srv rdat) ;; need both to dispatch a request
;;; 	(let* ((ripaddr  (alist-ref 'ipaddr srv))
;;; 	       (rsrvid   (alist-ref 'Z srv))
;;; 	       (rport    (any->number (alist-ref 'port   srv)))
;;; 	       (res-full (if (and (equal? ripaddr (area-myaddr acfg))
;;; 				  (equal? rport   (area-port acfg)))
;;; 			     (request acfg ripaddr rport (area-pktid acfg) action cookie dbname params)
;;; 			     (safe-call 'request ripaddr rport
;;; 					(area-myaddr acfg)
;;; 					(area-port   acfg)
;;; 					#;(area-pktid acfg)
;;; 					rsrvid
;;; 					action cookie dbname params))))
;;; 	  ;; (print "res-full: " res-full)
;;; 	  (match res-full
;;; 	    ((response-ok response-msg rem ...)
;;; 	     (let* ((send-message-time (current-milliseconds))
;;; 		    ;; (match res-full
;;; 		    ;;  ((response-ok response-msg)
;;; 		    ;; (response-ok  (car res-full))
;;; 		    ;; (response-msg (cadr res-full)
;;; 		    )
;;; 	       ;; (res (take res-full 3))) ;; ctype == action, TODO: converge on one term <<=== what was this? BUG 
;;; 	       ;; (print "ulex:call: send-message took " (- send-message-time post-get-start-time) " ms params=" params)
;;; 	       (sdbg> "call" "send-message" post-get-start-time #f call-start-time)
;;; 	       (cond
;;; 		((not response-ok) #f)
;;; 		((member response-msg '("db read submitted" "db write submitted"))
;;; 		 (let* ((cookie-id   (cadddr res-full))
;;; 			(mbox        (make-mailbox))
;;; 			(mbox-time   (current-milliseconds)))
;;; 		   (hash-table-set! (area-cookie2mbox acfg) cookie-id mbox)
;;; 		   (let* ((mbox-timeout-secs    20)
;;; 			  (mbox-timeout-result 'MBOX_TIMEOUT)
;;; 			  (res                  (mailbox-receive! mbox mbox-timeout-secs mbox-timeout-result))
;;; 			  (mbox-receive-time    (current-milliseconds)))
;;; 		     (hash-table-delete! (area-cookie2mbox acfg) cookie-id)
;;; 		     (sdbg> "call" "mailbox-receive" mbox-time #f call-start-time " from: " myid " to server: " srvid " for " dbname)
;;; 		     ;; (print "ulex:call mailbox-receive took " (- mbox-receive-time mbox-time) "ms params=" params)
;;; 		     res)))
;;; 		(else
;;; 		 (print "Unhandled response \""response-msg"\"")
;;; 		 #f))
;;; 	       ;; depending on what action (i.e. ctype) is we will block here waiting for
;;; 	       ;; all the data (mechanism to be determined)
;;; 	       ;;
;;; 	       ;; if res is a "working on it" then wait
;;; 	       ;;    wait for result
;;; 	       ;; mailbox thread wait on 
;;; 	       
;;; 	       ;; if res is a "can't help you" then try a different server
;;; 	       ;; if res is a "ack" (e.g. for one-shot requests) then return res
;;; 	       ))
;;; 	    (else
;;; 	     (if (< count 10)
;;; 		 (let* ((url (conc (alist-ref 'ipaddr srv) ":" (alist-ref 'port srv))))
;;; 		   (thread-sleep! 1)
;;; 		   (print "ERROR: Bad result from " url ", dbname: " dbname ", action: " action ", params: " params ". Trying again in 1 second.")
;;; 		   (call acfg dbname action params (+ count 1)))
;;; 		 (begin
;;; 		   (error (conc "ERROR: " count " tries, still have improper response res-full=" res-full)))))))
;;; 	(begin
;;; 	  (if (not rdat)
;;; 	      (print "ERROR: action " action " not registered.")
;;; 	      (if (< count 10)
;;; 		 (begin
;;; 		   (thread-sleep! 1)
;;; 		   (area-hosts-set! acfg (make-hash-table)) ;; clear out all known hosts
;;; 		   (print "ERROR: no server found, srv=" srv ", trying again in 1 seconds")
;;; 		   (call acfg dbname action params (+ count 1)))
;;; 		 (begin
;;; 		   (error (conc "ERROR: no server found after 10 tries, srv=" srv ", giving up."))
;;; 		   #;(error "No server available"))))))))
;;; 
;;; 
;;; ;;======================================================================
;;; ;; U T I L I T I E S 
;;; ;;======================================================================
;;; 
;;; ;; get a signature for identifing this process
;;; ;;
;;; (define (get-process-signature)
;;;   (cons (get-host-name)(current-process-id)))
;;; 
;;; ;;======================================================================
;;; ;; S Y S T E M   S T U F F
;;; ;;======================================================================
;;; 
;;; ;; get normalized cpu load by reading from /proc/loadavg and
;;; ;; /proc/cpuinfo return all three values and the number of real cpus
;;; ;; and the number of threads returns alist '((adj-cpu-load
;;; ;; . normalized-proc-load) ... etc.  keys: adj-proc-load,
;;; ;; adj-core-load, 1m-load, 5m-load, 15m-load
;;; ;;
;;; (define (get-normalized-cpu-load)
;;;   (let ((res (get-normalized-cpu-load-raw))
;;; 	(default `((adj-proc-load . 2) ;; there is no right answer
;;; 		   (adj-core-load . 2)
;;; 		   (1m-load       . 2)
;;; 		   (5m-load       . 0) ;; causes a large delta - thus causing default of throttling if stuff goes wrong
;;; 		   (15m-load      . 0)
;;; 		   (proc          . 1)
;;; 		   (core          . 1)
;;; 		   (phys          . 1)
;;; 		   (error         . #t))))
;;;     (cond
;;;      ((and (list? res)
;;; 	   (> (length res) 2))
;;;       res)
;;;      ((eq? res #f)   default) ;; add messages?
;;;      ((eq? res #f) default)   ;; this would be the #eof
;;;      (else default))))
;;; 
;;; (define (get-normalized-cpu-load-raw)
;;;   (let* ((actual-host           (get-host-name))) ;; #f is localhost
;;;     (let ((data  (append 
;;; 		  (with-input-from-file "/proc/loadavg" read-lines)
;;; 		  (with-input-from-file "/proc/cpuinfo" read-lines)
;;; 		  (list "end")))
;;; 	  (load-rx  (regexp "^([\\d\\.]+)\\s+([\\d\\.]+)\\s+([\\d\\.]+)\\s+.*$"))
;;; 	  (proc-rx  (regexp "^processor\\s+:\\s+(\\d+)\\s*$"))
;;; 	  (core-rx  (regexp "^core id\\s+:\\s+(\\d+)\\s*$"))
;;; 	  (phys-rx  (regexp "^physical id\\s+:\\s+(\\d+)\\s*$"))
;;; 	  (max-num  (lambda (p n)(max (string->number p) n))))
;;;       ;; (print "data=" data)
;;;       (if (null? data) ;; something went wrong
;;; 	  #f
;;; 	  (let loop ((hed      (car data))
;;; 		     (tal      (cdr data))
;;; 		     (loads    #f)
;;; 		     (proc-num 0)  ;; processor includes threads
;;; 		     (phys-num 0)  ;; physical chip on motherboard
;;; 		     (core-num 0)) ;; core
;;; 	    ;; (print hed ", " loads ", " proc-num ", " phys-num ", " core-num)
;;; 	    (if (null? tal) ;; have all our data, calculate normalized load and return result
;;; 		(let* ((act-proc (+ proc-num 1))
;;; 		       (act-phys (+ phys-num 1))
;;; 		       (act-core (+ core-num 1))
;;; 		       (adj-proc-load (/ (car loads) act-proc))
;;; 		       (adj-core-load (/ (car loads) act-core))
;;; 		       (result
;;; 			(append (list (cons 'adj-proc-load adj-proc-load)
;;; 				      (cons 'adj-core-load adj-core-load))
;;; 				(list (cons '1m-load (car loads))
;;; 				      (cons '5m-load (cadr loads))
;;; 				      (cons '15m-load (caddr loads)))
;;; 				(list (cons 'proc act-proc)
;;; 				      (cons 'core act-core)
;;; 				      (cons 'phys act-phys)))))
;;; 		  result)
;;; 		(regex-case
;;; 		    hed
;;; 		  (load-rx  ( x l1 l5 l15 ) (loop (car tal)(cdr tal)(map string->number (list l1 l5 l15)) proc-num phys-num core-num))
;;; 		  (proc-rx  ( x p         ) (loop (car tal)(cdr tal) loads           (max-num p proc-num) phys-num core-num))
;;; 		  (phys-rx  ( x p         ) (loop (car tal)(cdr tal) loads           proc-num (max-num p phys-num) core-num))
;;; 		  (core-rx  ( x c         ) (loop (car tal)(cdr tal) loads           proc-num phys-num (max-num c core-num)))
;;; 		  (else 
;;; 		   (begin
;;; 		     ;; (print "NO MATCH: " hed)
;;; 		     (loop (car tal)(cdr tal) loads proc-num phys-num core-num))))))))))
;;; 
;;; (define (get-host-stats acfg)
;;;   (let ((stats-hash (area-stats acfg)))
;;;     ;; use this opportunity to remove references to dbfiles which have not been accessed in a while
;;;     (for-each
;;;      (lambda (dbname)
;;;        (let* ((stats       (hash-table-ref stats-hash dbname))
;;; 	      (last-access (stat-when stats)))
;;; 	 (if (and (> last-access 0)                             ;; if zero then there has been no access
;;; 		  (> (- (current-seconds) last-access) 10))     ;; not used in ten seconds
;;; 	     (begin
;;; 	       (print "Removing " dbname " from stats list")
;;; 	       (hash-table-delete! stats-hash dbname) ;; remove from stats hash
;;; 	       (stat-dbs-set! stats (hash-table-keys stats))))))
;;;      (hash-table-keys stats-hash))
;;;     
;;;     `(,(hash-table->alist (area-dbs acfg)) ;; dbname => randnum
;;;       ,(map (lambda (dbname)  ;; dbname is the db name
;;; 	      (cons dbname (stat-when (hash-table-ref stats-hash dbname))))
;;; 	    (hash-table-keys stats-hash))
;;;       (cpuload . ,(get-normalized-cpu-load)))))
;;;     #;(stats   . ,(map (lambda (k) ;; create an alist from the stats data
;;; 		       (cons k (stat->alist (hash-table-ref (area-stats acfg) k))))
;;; 		     (hash-table-keys (area-stats acfg))))
;;; 
;;; #;(trace
;;;  ;; assv
;;;  ;; cdr
;;;  ;; caar
;;;  ;; ;; cdr
;;;  ;; call
;;;  ;; finalize-all-db-handles
;;;  ;; get-all-server-pkts
;;;  ;; get-normalized-cpu-load
;;;  ;; get-normalized-cpu-load-raw
;;;  ;; launch
;;;  ;; nmsg-send
;;;  ;; process-db-queries
;;;  ;; receive-message
;;;  ;; std-peer-handler
;;;  ;; update-known-servers
;;;  ;; work-queue-processor
;;;  )
;;; 
;;; ;;======================================================================
;;; ;; netutil
;;; ;;   move this back to ulex-netutil.scm someday?
;;; ;;======================================================================
;;; 
;;; ;; #include <stdio.h>
;;; ;; #include <netinet/in.h>
;;; ;; #include <string.h>
;;; ;; #include <arpa/inet.h>
;;; 
;;; (foreign-declare "#include \"sys/types.h\"")
;;; (foreign-declare "#include \"sys/socket.h\"")
;;; (foreign-declare "#include \"ifaddrs.h\"")
;;; (foreign-declare "#include \"arpa/inet.h\"")
;;; 
;;; ;; get IP addresses from ALL interfaces
;;; (define get-all-ips
;;;   (foreign-safe-lambda* scheme-object ()
;;;     "
;;; 
;;; // from https://stackoverflow.com/questions/17909401/linux-c-get-default-interfaces-ip-address :
;;; 
;;; 
;;;     C_word lst = C_SCHEME_END_OF_LIST, len, str, *a;
;;; //    struct ifaddrs *ifa, *i;
;;; //    struct sockaddr *sa;
;;; 
;;;     struct ifaddrs * ifAddrStruct = NULL;
;;;     struct ifaddrs * ifa = NULL;
;;;     void * tmpAddrPtr = NULL;
;;; 
;;;     if ( getifaddrs(&ifAddrStruct) != 0)
;;;       C_return(C_SCHEME_FALSE);
;;; 
;;; //    for (i = ifa; i != NULL; i = i->ifa_next) {
;;;     for (ifa = ifAddrStruct; ifa != NULL; ifa = ifa->ifa_next) {
;;;         if (ifa->ifa_addr->sa_family==AF_INET) { // Check it is
;;;             // a valid IPv4 address
;;;             tmpAddrPtr = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr;
;;;             char addressBuffer[INET_ADDRSTRLEN];
;;;             inet_ntop(AF_INET, tmpAddrPtr, addressBuffer, INET_ADDRSTRLEN);
;;; //            printf(\"%s IP Address %s\\n\", ifa->ifa_name, addressBuffer);
;;;             len = strlen(addressBuffer);
;;;             a = C_alloc(C_SIZEOF_PAIR + C_SIZEOF_STRING(len));
;;;             str = C_string(&a, len, addressBuffer);
;;;             lst = C_a_pair(&a, str, lst);
;;;         } 
;;; 
;;; //        else if (ifa->ifa_addr->sa_family==AF_INET6) { // Check it is
;;; //            // a valid IPv6 address
;;; //            tmpAddrPtr = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;
;;; //            char addressBuffer[INET6_ADDRSTRLEN];
;;; //            inet_ntop(AF_INET6, tmpAddrPtr, addressBuffer, INET6_ADDRSTRLEN);
;;; ////            printf(\"%s IP Address %s\\n\", ifa->ifa_name, addressBuffer);
;;; //            len = strlen(addressBuffer);
;;; //            a = C_alloc(C_SIZEOF_PAIR + C_SIZEOF_STRING(len));
;;; //            str = C_string(&a, len, addressBuffer);
;;; //            lst = C_a_pair(&a, str, lst);
;;; //       }
;;; 
;;; //       else {
;;; //         printf(\" not an IPv4 address\\n\");
;;; //       }
;;; 
;;;     }
;;; 
;;;     freeifaddrs(ifa);
;;;     C_return(lst);
;;; 
;;; "))
;;; 
;;; ;; Change this to bias for addresses with a reasonable broadcast value?
;;; ;;
;;; (define (ip-pref-less? a b)
;;;   (let* ((rate (lambda (ipstr)
;;;                  (regex-case ipstr
;;;                              ( "^127\\." _ 0 )
;;;                              ( "^(10\\.0|192\\.168\\.)\\..*" _ 1 )
;;;                              ( else 2 ) ))))
;;;     (< (rate a) (rate b))))
;;;   
;;; 
;;; (define (get-my-best-address)
;;;   (let ((all-my-addresses (get-all-ips))
;;;         ;;(all-my-addresses-old (vector->list (hostinfo-addresses (hostname->hostinfo (get-host-name)))))
;;;         )
;;;     (cond
;;;      ((null? all-my-addresses)
;;;       (get-host-name))                                          ;; no interfaces?
;;;      ((eq? (length all-my-addresses) 1)
;;;       (car all-my-addresses))                      ;; only one to choose from, just go with it
;;;      
;;;      (else
;;;       (car (sort all-my-addresses ip-pref-less?)))
;;;      ;; (else 
;;;      ;;  (ip->string (car (filter (lambda (x)                      ;; take any but 127.
;;;      ;;    			 (not (eq? (u8vector-ref x 0) 127)))
;;;      ;;    		       all-my-addresses))))
;;; 
;;;      )))
;;; 
;;; (define (get-all-ips-sorted)
;;;   (sort (get-all-ips) ip-pref-less?))
;;; 
;;; 

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//  Copyright 2006-2017, Matthew Welland.
// 
// This file is part of Megatest.
// 
//     Megatest is free software: you can redistribute it and/or modify
//     it under the terms of the GNU General Public License as published by
//     the Free Software Foundation, either version 3 of the License, or
//     (at your option) any later version.
// 
//     Megatest is distributed in the hope that it will be useful,
//     but WITHOUT ANY WARRANTY; without even the implied warranty of
//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//     GNU General Public License for more details.
// 
//     You should have received a copy of the GNU General Public License
//     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

digraph G {

  // graph[center=true, margin=0.2, nodesep=0.1, ranksep=0.3]

  layout=neato;
  // layout=fdp;
  // overlap=scalexy; //false, compress, ...
  overlap=scalexy;
  // sep="+1"; // 0.1, +1
  sep="-0.1";
 
  user_program [label="user program"];
  
  subgraph cluster_1 {
    node [style=filled,shape=oval];
    label = "caller";
    color=brown;

    send_receive [label="(send-receive uconn\n   host-port qrykey cmd data)"];
    send [label="(send uconn host-port\n    qrykey cmd data)"];
    ulex_cmd_loopcaller [label="(ulex-cmd-loop uconn)"];
    ulex_handlercaller [label="(ulex-handler uconn rdat)"];
    mailbox [label="mailbox\n\nrdat\n...",shape=box];
    
    send_receive -> send;
    ulex_cmd_loopcaller -> ulex_handlercaller;
    ulex_handlercaller -> mailbox;
    mailbox -> send_receive;
  }

  subgraph cluster_2 {
    node [shape=oval];
    label = "listener";
    color=green;

    ulex_cmd_loop [label="(ulex-cmd-loop uconn)"];
    ulex_handler [label="(ulex-handler \nuconn rdat)"];
    add_to_work_queue [label="(add-to-work-queue\n  uconn rdat)"];
    queue [label="queue\n\nrdat\n...",shape=box];
    process_work_queue [label="(process-work-queue uconn)"];
    do_work [label="(do-work uconn rdat)\nrdat: '(rem-host-port qrykey cmd params)"];
    user_proc [label="(proc rem-host-port\n    qrykey cmd params)\n;; proc supplied by user"];
    sendlis [label="(send uconn host-port\n    qrykey 'response result)"];
    
    ulex_cmd_loop -> ulex_handler [label="rdat"];
    ulex_handler -> add_to_work_queue [label="rdat"];

    add_to_work_queue -> queue [label="rdat"];

    subgraph cluster_3 {
      label = "remote work";
      color=blue;
      
      queue -> process_work_queue [label="rdat"];
      process_work_queue -> do_work [label="rdat"];
      do_work -> user_proc; // [label="rdat: '(rem-host-port\n   qrykey cmd params)"];
    }
  }

  user_proc -> sendlis;
  user_program -> send_receive;
  send_receive -> user_program;
  
  send -> ulex_cmd_loop [label="rdat: '(host-port\n  qrykey cmd data)"];
  sendlis -> ulex_cmd_loopcaller [label="rdat: '(host-port qrykey\n  'response result)"];
  ulex_handler -> send [label="'ack"];
  ulex_handlercaller -> sendlis [label="'ack"];
  
}


// 	check_available_queue       -> remove_entries_over_10s_old;
// 	remove_entries_over_10s_old -> set_available [label="num_avail < 3"];
// 	remove_entries_over_10s_old -> exit [label="num_avail > 2"];
// 
// 	set_available               -> delay_2s;
// 	delay_2s          -> check_place_in_queue;
// 
// 	check_place_in_queue        -> "http:transport-launch" [label="at head"];
// 	check_place_in_queue        -> exit [label="not at head"];
// 
// 	"client:login"              -> "server:shutdown" [label="login failed"];
// 	"server:shutdown"           -> exit;	
// 
// 	subgraph cluster_2 {
// 		"http:transport-launch"       -> "http:transport-run";
// 		"http:transport-launch"       -> "http:transport-keep-running";
// 
// 		"http:transport-keep-running" -> "tests running?";
// 		"tests running?"              -> "client:login" [label=yes];
// 		"tests running?"              -> "server:shutdown" [label=no];
// 		"client:login"                -> delay_5s [label="login ok"];
// 		delay_5s                      -> "http:transport-keep-running";
// 	}
// 
	// start_server -> "server_running?";
	// "server_running?" -> set_available [label="no"];
	// "server_running?" -> delay_2s [label="yes"];
	// delay_2s -> "still_running?";
	// "still_running?" -> ping_server [label=yes];
	// "still_running?" -> set_available [label=no];
	// ping_server -> exit [label=alive];
	// ping_server -> remove_server_record [label=dead];
	// remove_server_record -> set_available;
	// set_available -> avail_delay [label="delay 3s"];
	// avail_delay -> "first_in_queue?";
	// 
	// "first_in_queue?" -> set_running [label=yes];
	// set_running -> get_next_port -> handle_requests;
	// "first_in_queue?" -> "dead_entry_in_queue?" [label=no];
	// "dead_entry_in_queue?" -> "server_running?" [label=no];
	// "dead_entry_in_queue?" -> "remove_dead_entries" [label=yes];
	// remove_dead_entries -> "server_running?";
	// 
	// handle_requests -> start_shutdown [label="no traffic\nno running tests"];
	// handle_requests -> shutdown_request;
	// start_shutdown -> shutdown_delay;
	// shutdown_request -> shutdown_delay;
	// shutdown_delay -> exit;

Added ulex/ulex.pdf version [a11f1937d3].

cannot compute difference between binary files

Added ulex/ulex.png version [1ca21b08ef].

cannot compute difference between binary files

Modified ulex/ulex.scm from [88c5ce4192] to [2c2b2f2441].

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;; ulex: Distributed sqlite3 db
;;;
;; Copyright (C) 2018 Matt Welland
;; Redistribution and use in source and binary forms, with or without
;; modification, is permitted.
;;
;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;; ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE


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;; ulex: Distributed sqlite3 db
;;;
;; Copyright (C) 2018-2021 Matt Welland
;; Redistribution and use in source and binary forms, with or without
;; modification, is permitted.
;;
;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;; ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
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;;   See README in the distribution at https://www.kiatoa.com/fossils/ulex
;; NOTES:
;;   Why sql-de-lite and not say, dbi?  - performance mostly, then simplicity.
;;
;;======================================================================

(module ulex
 *
































(import scheme
	chicken.base
	chicken.file

	chicken.time
	chicken.condition
	chicken.string
	chicken.sort
	chicken.pretty-print
	
	address-info
	mailbox
	matchable
	queues
	regex
	regex-case


	srfi-1
	srfi-18
	srfi-4
	srfi-69
	system-information
	tcp6
	typed-records
	)

;; udat struct, used by both caller and callee
;; instantiated as uconn by convention
;;
(defstruct udat
  ;; the listener side
  (port #f)
  (host-port #f)
  (socket #f)
  ;; the peers
  (peers  (make-hash-table)) ;; host:port->peer
  ;; work handling
  (work-queue (make-queue))
  (work-proc  #f)            ;; set by user
  (cnum       0)             ;; cookie number
  (mboxes     (make-hash-table))
  (avail-cmboxes '())  ;; list of (<cookie> . <mbox>) for re-use





  ) 

















;; struct for keeping track of others we are talking to
;;
(defstruct pdat
  (host-port  #f)
  (conns      '()) ;; list of pcon structs, pop one off when calling the peer
  )


;; struct for peer connections, keep track of expiration etc.
;;
(defstruct pcon
  (inp #f)
  (oup #f)
  (exp (+ (current-seconds) 59)) ;; expires at this time, set to (+ (current-seconds) 59)
  (lifetime (+ (current-seconds) 600)) ;; throw away and create new after five minutes
  )


;;======================================================================
;; listener
;;======================================================================






;; create a tcp listener and return a populated udat struct with
;; my port, address, hostname, pid etc.
;; return #f if fail to find a port to allocate.
;;
;;  if udata-in is #f create the record
;;  if there is already a serv-listener return the udata
;;







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;;   See README in the distribution at https://www.kiatoa.com/fossils/ulex
;; NOTES:
;;   Why sql-de-lite and not say, dbi?  - performance mostly, then simplicity.
;;
;;======================================================================

(module ulex
	*
	#;(
     
     ;; NOTE: looking for the handler proc - find the run-listener :)
     
     run-listener     ;; (run-listener handler-proc [port]) => uconn

     ;; NOTE: handler-proc params;
     ;;       (handler-proc rem-host-port qrykey cmd params)

     send-receive     ;; (send-receive uconn host-port cmd data)

     ;; NOTE: cmd can be any plain text symbol except for these;
     ;;         'ping 'ack 'goodbye 'response
     
     set-work-handler ;; (set-work-handler proc)

     wait-and-close   ;; (wait-and-close uconn)

     ulex-listener?
     
     ;; needed to get the interface:port that was automatically found
     udat-port
     udat-host-port
     
     ;; for testing only
     ;; pp-uconn
     
     ;; parameters
     work-method   ;; parameter; 'threads, 'mailbox, 'limited, 'direct
     return-method ;; parameter; 'mailbox, 'polling, 'direct
     )

(import scheme
	chicken.base
	chicken.file
	chicken.io
	chicken.time
	chicken.condition
	chicken.string
	chicken.sort
	chicken.pretty-print
	
	address-info
	mailbox
	matchable
	;; queues
	regex
	regex-case
	simple-exceptions
	s11n
	srfi-1
	srfi-18
	srfi-4
	srfi-69
	system-information
	tcp6
	typed-records
	)

;; udat struct, used by both caller and callee
;; instantiated as uconn by convention
;;
(defstruct udat
  ;; the listener side
  (port #f)
  (host-port #f)
  (socket #f)
  ;; the peers
  (peers  (make-hash-table)) ;; host:port->peer
  ;; work handling
  (work-queue (make-mailbox))
  (work-proc  #f)                ;; set by user
  (cnum       0)                 ;; cookie number
  (mboxes     (make-hash-table)) ;; for the replies
  (avail-cmboxes '())            ;; list of (<cookie> . <mbox>) for re-use
  ;; threads
  (numthreads 10)
  (cmd-thread #f)
  (work-queue-thread #f)
  (num-threads-running 0)
  ) 

;; Parameters

;; work-method:
(define work-method (make-parameter 'mailbox))
;;    mailbox - all rdat goes through mailbox
;;    threads - all rdat immediately executed in new thread
;;    direct  - no queuing
;;

;; return-method, return the result to waiting send-receive:
(define return-method (make-parameter 'mailbox))
;;    mailbox - create a mailbox and use it for passing returning results to send-receive
;;    polling - put the result in a hash table keyed by qrykey and send-receive can poll it for result
;;    direct  - no queuing, result is passed back in single tcp connection
;;

;; ;; struct for keeping track of others we are talking to
;; ;;
;; (defstruct pdat
;;   (host-port  #f)
;;   (conns      '()) ;; list of pcon structs, pop one off when calling the peer

;;   )
;; 
;; ;; struct for peer connections, keep track of expiration etc.
;; ;;
;; (defstruct pcon
;;   (inp #f)
;;   (oup #f)
;;   (exp (+ (current-seconds) 59)) ;; expires at this time, set to (+ (current-seconds) 59)
;;   (lifetime (+ (current-seconds) 600)) ;; throw away and create new after five minutes

;;   )

;;======================================================================
;; listener
;;======================================================================

;; is uconn a ulex connector (listener)
;;
(define (ulex-listener? uconn)
  (udat? uconn))

;; create a tcp listener and return a populated udat struct with
;; my port, address, hostname, pid etc.
;; return #f if fail to find a port to allocate.
;;
;;  if udata-in is #f create the record
;;  if there is already a serv-listener return the udata
;;
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  ;; sockaddr-address, sockaddr-port, sockaddr->string
  (let* ((tlsn (tcp-listen port 1000 #f)) ;; (tcp-listen TCPPORT [BACKLOG [HOST]])
	 (addr (get-my-best-address))) ;; (hostinfo-addresses (host-information (current-hostname)))
    (udat-port-set!      uconn port)
    (udat-host-port-set! uconn (conc addr":"port))
    (udat-socket-set!    uconn tlsn)
    uconn))



























;;======================================================================
;; peers and connections
;;======================================================================



;; send structured data to recipient
;;
;;  NOTE: qrykey is what was called the "cookie" previously
;;
;;     retval tells send to expect and wait for return data (one line) and return it or time out
;;       this is for ping where we don't want to necessarily have set up our own server yet.
;;
;; NOTE: see below for beginnings of code to allow re-use of tcp connections
;;        - I believe (without substantial evidence) that re-using connections will
;;          be beneficial ...
;;
(define (send udata host-port qrykey cmd params)
  (let* ((my-host-port (udat-host-port udata))          ;; remote will return to this
	 (isme         #f #;(equal? host-port my-host-port)) ;; calling myself?
	 ;; dat is a self-contained work block that can be sent or handled locally
	 (dat          (list my-host-port qrykey cmd params))
	 )
    (if isme
	(ulex-handler udata dat) ;; no transmission needed

	(handle-exceptions ;; TODO - MAKE THIS EXCEPTION CMD SPECIFIC?
	    exn
	    #f



	  (let-values (((inp oup)(tcp-connect host-port)))
	    (let ((res (if (and inp oup)
			   (begin
			     (write dat oup)

			     (read inp)) ;; yes, we always want an ack

			   (begin
			     (print "ERROR: send called but no receiver has been setup. Please call setup first!")
			     #f))))
	      (close-input-port inp)


	      (close-output-port oup)





















	      res)))))) ;; res will always be 'ack





























;; send a request to the given host-port and register a mailbox in udata
;; wait for the mailbox data and return it
;;
(define (send-receive uconn host-port cmd data)
  (let* ((cmbox     (get-cmbox uconn)) ;; would it be better to keep a stack of mboxes to reuse?
	 (qrykey    (car cmbox))
	 (mbox      (cdr cmbox))
	 (mbox-time (current-milliseconds)))


    (if (eq? (send uconn host-port qrykey cmd data) 'ack)

	(let* ((mbox-timeout-secs    120) ;; timeout)





	       (mbox-timeout-result 'MBOX_TIMEOUT)
	       (res                  (mailbox-receive! mbox mbox-timeout-secs mbox-timeout-result))



	       (mbox-receive-time    (current-milliseconds)))

	  (if (eq? res 'MBOX_TIMEOUT)
	      #f  ;; convert to raising exception?


	      res))
	(begin
	  (print "ERROR: Communication failed?")
	  #f)))) ;; #f means failed to communicate

;;======================================================================
;; responder side
;;======================================================================

;; take a request, rdata, and if not immediate put it in the work queue
;;
;; Reserved cmds; ack ping goodbye response
;;
(define (ulex-handler uconn rdata)

  (match rdata ;;  (string-split controldat)
    ((rem-host-port qrykey cmd params)
     ;; (print "ulex-handler got: "rem-host-port" qrykey: "qrykey" cmd: "cmd" params: "params)
     (let ((mbox (hash-table-ref/default (udat-mboxes uconn) qrykey #f)))
       (case cmd
	 ;; ((ack )(print "Got ack! But why? Should NOT get here.") 'ack)
	 ((ping)
	  ;; (print "Got Ping!")
	  (add-to-work-queue uconn rdata)
	 'ack)
	 ((goodbye)
	  ;; just clear out references to the caller
	  (add-to-work-queue uconn rdata)
	  'ack)
	 ((response) ;; this is a result from remote processing, send it as mail ...






	  (if mbox
	      (begin
		(mailbox-send! mbox params) ;; params here is our result
		'ack)
	      (begin
		(print "ERROR: received result but no associated mbox for cookie "qrykey)
		#f)))
	 (else

	  ;; (print "Got generic request: "cmd)
	  (add-to-work-queue uconn rdata)
	  'ack))))
    (else
     (print "BAD DATA? controldat=" rdata)
     'ack) ;; send ack anyway?
    ))

;; given an already set up uconn start the cmd-loop
;;
(define (ulex-cmd-loop uconn)
  (let* ((serv-listener (udat-socket uconn)))

    (let loop ((state 'start))
      (let-values (((inp oup)(tcp-accept serv-listener)))

	(let* ((rdat  (read inp))
	       (resp  (ulex-handler uconn rdat)))
	  (if resp (write resp oup))
	  (close-input-port inp)
	  (close-output-port oup))


	(loop state)))))










;; add a proc to the cmd list, these are done symetrically (i.e. in all instances)
;; so that the proc can be dereferenced remotely
;;
(define (set-work-handler uconn proc)
  (udat-work-proc-set! uconn proc))

;; run-listener does all the work of starting a listener in a thread
;; it then returns control
;;
(define (run-listener handler-proc)
  (let* ((uconn (make-udat)))
    (udat-work-proc-set! uconn handler-proc)
    (if (setup-listener uconn)
	(let* ((th1 (make-thread (lambda ()(ulex-cmd-loop uconn)) "Ulex command loop"))
	       (th2 (make-thread (lambda ()(process-work-queue uconn)) "Ulex work queue processor")))
	  (thread-start! th1)
	  (thread-start! th2)
	  (print "cmd loop and process workers started")
	  uconn)
	(begin
	  (print "ERROR: run-listener called without proper setup.")
	  (exit)))))

;;======================================================================
;; work queues - this is all happening on the listener side
;;======================================================================

;; rdata is (rem-host-port qrykey cmd params)
					     
(define (add-to-work-queue uconn rdata)
  (queue-add! (udat-work-queue uconn) rdata))















(define (do-work uconn rdata)
  (let* ((proc (udat-work-proc uconn))) ;; get it each time - conceivebly it could change
    ;; put this following into a do-work procedure
    (match rdata
      ((rem-host-port qrykey cmd params)

       (let* ((result (proc rem-host-port qrykey cmd params)))






	 ;; send 'response as cmd and result as params
	 (send uconn rem-host-port qrykey 'response result))) ;; could check for ack


      (else
       (print "ERROR: rdata "rdata", did not match rem-host-port qrykey cmd params")))))
     
     

(define (process-work-queue uconn) 
  (let ((wqueue (udat-work-queue uconn))
	(proc   (udat-work-proc  uconn)))

    (let loop ()
      (if (queue-empty? wqueue)
	  (thread-sleep! 0.1)


	  (let ((rdata (queue-remove! wqueue)))
	    (do-work uconn rdata)))
      (loop))))











;; below was to enable re-use of connections. This seems non-trivial so for
;; now lets open on each call
;;
;; ;; given host-port get or create peer struct
;; ;;
;; (define (udat-get-peer uconn host-port)







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  ;; sockaddr-address, sockaddr-port, sockaddr->string
  (let* ((tlsn (tcp-listen port 1000 #f)) ;; (tcp-listen TCPPORT [BACKLOG [HOST]])
	 (addr (get-my-best-address))) ;; (hostinfo-addresses (host-information (current-hostname)))
    (udat-port-set!      uconn port)
    (udat-host-port-set! uconn (conc addr":"port))
    (udat-socket-set!    uconn tlsn)
    uconn))

;; run-listener does all the work of starting a listener in a thread
;; it then returns control
;;
(define (run-listener handler-proc #!optional (port-suggestion 4242))
  (let* ((uconn (make-udat)))
    (udat-work-proc-set! uconn handler-proc)
    (if (setup-listener uconn port-suggestion)
	(let* ((th1 (make-thread (lambda ()(ulex-cmd-loop uconn)) "Ulex command loop"))
	       (th2 (make-thread (lambda ()
				   (case (work-method)
				     ((mailbox limited)
				      (process-work-queue uconn))))
				 "Ulex work queue processor")))
	  ;; (tcp-buffer-size 2048)
	  (thread-start! th1)
	  (thread-start! th2)
	  (udat-cmd-thread-set! uconn th1)
	  (udat-work-queue-thread-set! uconn th2)
	  (print "cmd loop and process workers started, listening on "(udat-host-port uconn)".")
	  uconn)
	(assert #f "ERROR: run-listener called without proper setup."))))

(define (wait-and-close uconn)
  (thread-join! (udat-cmd-thread uconn))
  (tcp-close (udat-socket uconn)))

;;======================================================================
;; peers and connections
;;======================================================================

(define *send-mutex* (make-mutex))

;; send structured data to recipient
;;
;;  NOTE: qrykey is what was called the "cookie" previously
;;
;;     retval tells send to expect and wait for return data (one line) and return it or time out
;;       this is for ping where we don't want to necessarily have set up our own server yet.
;;
;; NOTE: see below for beginnings of code to allow re-use of tcp connections
;;        - I believe (without substantial evidence) that re-using connections will
;;          be beneficial ...
;;
(define (send udata host-port qrykey cmd params)
  (let* ((my-host-port (udat-host-port udata))          ;; remote will return to this
	 (isme         #f #;(equal? host-port my-host-port)) ;; calling myself?
	 ;; dat is a self-contained work block that can be sent or handled locally
	 (dat          (list my-host-port qrykey cmd params #;(cons (current-seconds)(current-milliseconds)))))

    (cond
     (isme (ulex-handler udata dat)) ;; no transmission needed
     (else
      (handle-exceptions ;; TODO - MAKE THIS EXCEPTION CMD SPECIFIC?
	  exn

	  (message exn)
	(begin
	  ;; (mutex-lock! *send-mutex*) ;; DOESN'T SEEM TO HELP
	  (let-values (((inp oup)(tcp-connect host-port)))
	    (let ((res (if (and inp oup)
			   (begin
			     (serialize dat oup)
			     (close-output-port oup)
			     (deserialize inp)
			     )
			   (begin
			     (print "ERROR: send called but no receiver has been setup. Please call setup first!")
			     #f))))
	      (close-input-port inp)
	      ;; (mutex-unlock! *send-mutex*) ;; DOESN'T SEEM TO HELP
	      res)))))))) ;; res will always be 'ack unless return-method is direct

(define (send-via-polling uconn host-port cmd data)
  (let* ((qrykey (make-cookie uconn))
	 (sres   (send uconn host-port qrykey cmd data)))
    (case sres
      ((ack)
       (let loop ((start-time (current-milliseconds)))
	 (if (> (current-milliseconds)(+ start-time 10000)) ;; ten seconds timeout
	     (begin
	       (print "ULEX ERROR: timed out waiting for response from "host-port", "cmd" "data)
	       #f)
	     (let* ((result (hash-table-ref/default (udat-mboxes uconn) qrykey #f))) ;; NOTE: we are re-using mboxes hash
	       (if result ;; result is '(status . result-data) or #f for nothing yet
		   (begin
		     (hash-table-delete! (udat-mboxes uconn) qrykey)
		     (cdr result))
		   (begin
		     (thread-sleep! 0.01)
		     (loop start-time)))))))
      (else
       (print "ULEX ERROR: Communication failed? sres="sres)
       #f))))

(define (send-via-mailbox uconn host-port cmd data)
  (let* ((cmbox     (get-cmbox uconn)) ;; would it be better to keep a stack of mboxes to reuse?
	 (qrykey    (car cmbox))
	 (mbox      (cdr cmbox))
	 (mbox-time (current-milliseconds))
	 (sres      (send uconn host-port qrykey cmd data))) ;; short res
    (if (eq? sres 'ack) ;; BUG: change to be less than server:expiration-timeout?
	(let* ((mbox-timeout-secs    120 #;(if (eq? 'primordial (thread-name (current-thread)))
				     #f
				     120)) ;; timeout)
	       (mbox-timeout-result 'MBOX_TIMEOUT)
	       (res                  (mailbox-receive! mbox mbox-timeout-secs mbox-timeout-result))
	       (mbox-receive-time    (current-milliseconds)))
	  ;; (put-cmbox uconn cmbox) ;; reuse mbox and cookie. is it worth it?
	  (hash-table-delete! (udat-mboxes uconn) qrykey)
	  (if (eq? res 'MBOX_TIMEOUT)
	      (begin
		(print "WARNING: mbox timed out for query "cmd", with data "data
		       ", waiting for response from "host-port".")

		;; here it might make sense to clean up connection records and force clean start?
		;; NO. The progam using ulex needs to do the reset. Right thing here is exception
		
		#f)  ;; convert to raising exception?
	      res))
	(begin
	  (print "ERROR: Communication failed? Got "sres)
	  #f))))
  
;; send a request to the given host-port and register a mailbox in udata
;; wait for the mailbox data and return it
;;
(define (send-receive uconn host-port cmd data)



  (let* ((start-time (current-milliseconds))
	 (result     (cond
		      ((member cmd '(ping goodbye)) ;; these are immediate
		       (send uconn host-port 'ping cmd data))
		      ((eq? (work-method) 'direct)
		       ;; the result from send will be the actual result, not an 'ack
		       (send uconn host-port 'direct cmd data))
		      (else
		       (case (return-method)
			 ((polling)
			  (send-via-polling uconn host-port cmd data))
			 ((mailbox) 
			  (send-via-mailbox uconn host-port cmd data))
			 (else
			  (print "ULEX ERROR: unrecognised return-method "(return-method)".")
			  #f)))))
	 (duration    (- (current-milliseconds) start-time)))
    ;; this is ONLY for development and debugging. It will be removed once Ulex is stable.
    (if (< 5000 duration)

	(print "ULEX WARNING: round-trip took "(inexact->exact (round (/ duration 1000)))
	       " seconds; "cmd", host-port="host-port", data="data))
    result))
    



;;======================================================================
;; responder side
;;======================================================================

;; take a request, rdat, and if not immediate put it in the work queue
;;
;; Reserved cmds; ack ping goodbye response
;;
(define (ulex-handler uconn rdat)
  (assert (list? rdat) "FATAL: ulex-handler give rdat as not list")
  (match rdat ;;  (string-split controldat)
    ((rem-host-port qrykey cmd params);; timedata)
     ;; (print "ulex-handler got: "rem-host-port" qrykey: "qrykey" cmd: "cmd" params: "params)

     (case cmd
       ;; ((ack )(print "Got ack! But why? Should NOT get here.") 'ack)
       ((ping)
	;; (print "Got Ping!")
	;; (add-to-work-queue uconn rdat)
	'ack)
       ((goodbye)
	;; just clear out references to the caller. NOT COMPLETE
	(add-to-work-queue uconn rdat)
	'ack)
       ((response) ;; this is a result from remote processing, send it as mail ...
	(case (return-method)
	  ((polling)
	   (hash-table-set! (udat-mboxes uconn) qrykey (cons 'ok params))
	   'ack)
	  ((mailbox)
	   (let ((mbox (hash-table-ref/default (udat-mboxes uconn) qrykey #f)))
	     (if mbox
		 (begin
		   (mailbox-send! mbox params) ;; params here is our result
		   'ack)
		 (begin
		   (print "ERROR: received result but no associated mbox for cookie "qrykey)
		   'no-mbox-found))))
	  (else (print "ULEX ERROR: unrecognised return-method "(return-method))
		'bad-return-method)))
       (else ;; generic request - hand it to the work queue
	(add-to-work-queue uconn rdat)
	'ack)))
    (else
     (print "ULEX ERROR: bad rdat "rdat)

     'bad-rdat)))

;; given an already set up uconn start the cmd-loop
;;
(define (ulex-cmd-loop uconn)
  (let* ((serv-listener (udat-socket uconn))
	 (listener      (lambda ()
			  (let loop ((state 'start))
			    (let-values (((inp oup)(tcp-accept serv-listener)))
			      ;; (mutex-lock! *send-mutex*) ;; DOESN'T SEEM TO HELP
			      (let* ((rdat  (deserialize inp)) ;; '(my-host-port qrykey cmd params)
				     (resp  (ulex-handler uconn rdat)))
				(serialize resp oup)
				(close-input-port inp)
				(close-output-port oup)
				;; (mutex-unlock! *send-mutex*) ;; DOESN'T SEEM TO HELP
				)
			      (loop state))))))
    ;; start N of them
    (let loop ((thnum   0)
	       (threads '()))
      (if (< thnum 100)
	  (let* ((th (make-thread listener (conc "listener" thnum))))
	    (thread-start! th)
	    (loop (+ thnum 1)
		  (cons th threads)))
	  (map thread-join! threads)))))

;; add a proc to the cmd list, these are done symetrically (i.e. in all instances)
;; so that the proc can be dereferenced remotely
;;
(define (set-work-handler uconn proc)
  (udat-work-proc-set! uconn proc))


















;;======================================================================
;; work queues - this is all happening on the listener side
;;======================================================================

;; rdat is (rem-host-port qrykey cmd params)
					     
(define (add-to-work-queue uconn rdat)
  #;(queue-add! (udat-work-queue uconn) rdat)
  (case (work-method)
    ((threads)
     (thread-start! (make-thread (lambda ()
				   (do-work uconn rdat))
				 "worker thread")))
    ((mailbox)
     (mailbox-send! (udat-work-queue uconn) rdat))
    ((direct)
     (do-work uconn rdat))
    (else
     (print "ULEX ERROR: work-method "(work-method)" not recognised, using mailbox.")
     (mailbox-send! (udat-work-queue uconn) rdat))))
     
;; move the logic to return the result somewhere else?
;;
(define (do-work uconn rdat)
  (let* ((proc (udat-work-proc uconn))) ;; get it each time - conceivebly it could change
    ;; put this following into a do-work procedure
    (match rdat
      ((rem-host-port qrykey cmd params)
       (let* ((start-time (current-milliseconds))
	      (result (proc rem-host-port qrykey cmd params))
	      (end-time (current-milliseconds))
	      (run-time (- end-time start-time)))
	 (case (work-method)
	   ((direct) result)
	   (else
	    (print "ULEX: work "cmd", "params" done in "run-time" ms")
	    ;; send 'response as cmd and result as params
	    (send uconn rem-host-port qrykey 'response result) ;; could check for ack
	    (print "ULEX: response sent back to "rem-host-port" for "qrykey" in "(- (current-milliseconds) end-time)"ms")))))
      (MBOX_TIMEOUT 'do-work-timeout)
      (else
       (print "ERROR: rdat "rdat", did not match rem-host-port qrykey cmd params")))))

;; NEW APPROACH:
;;   
(define (process-work-queue uconn) 
  (let ((wqueue (udat-work-queue uconn))
	(proc   (udat-work-proc  uconn))
	(numthr (udat-numthreads uconn)))
    (let loop ((thnum    1)

	       (threads '()))
      (let ((thlst (cons (make-thread (lambda ()
					(let work-loop ()
					  (let ((rdat (mailbox-receive! wqueue 24000 'MBOX_TIMEOUT)))
					    (do-work uconn rdat))
					  (work-loop)))
				      (conc "work thread " thnum))
			 threads)))
	(if (< thnum numthr)
	    (loop (+ thnum 1)
		  thlst)
	    (begin
	      (print "ULEX: Starting "(length thlst)" worker threads.")
	      (map thread-start! thlst)
	      (print "ULEX: Threads started. Joining all.")
	      (map thread-join! thlst)))))))

;; below was to enable re-use of connections. This seems non-trivial so for
;; now lets open on each call
;;
;; ;; given host-port get or create peer struct
;; ;;
;; (define (udat-get-peer uconn host-port)
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(define (get-all-ips)
  (map address-info-host
       (filter (lambda (x)
		 (equal? (address-info-type x) "tcp"))
	       (address-infos (get-host-name)))))

;; (map ip->string (vector->list 
;; 		   (hostinfo-addresses
;; 		    (host-information (current-hostname))))))


)

(import ulex trace big-chicken srfi-18 test matchable system-information)
(trace-call-sites #t)
(trace
 ;; ulex-handler
 ;; send
 ;; add-to-work-queue
 )
 
(define (handler-proc rem-host-port qrykey cmd params)
  (print "handler-proc "rem-host-port" "qrykey" "cmd" "params)
  (case cmd
    ((ping) 'pong)
    ((calc)  (eval (with-input-from-string params read)))
    ((print)
     (print "params="params)
     params)
    ((reflect) `(,rem-host-port ,qrykey ,cmd ,params))
    (else  `(data ,data))))

(define uconn (run-listener handler-proc))

(pp-uconn uconn)

;; super basic loop back test
(define res #f)
(define targhost (conc (get-host-name)":"4242))
(define th1 (make-thread (lambda ()
			   (test #f 10 (send-receive uconn targhost 'calc "(+ 5 5)"))
			   (set! res (send-receive uconn targhost 'ping '()))
			   (test #f 'pong (send-receive uconn targhost 'ping '()))
			   )))

(thread-start! th1)
(thread-join! th1)
		
(print "All done")
(print "Received "res)








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(define (get-all-ips)
  (map address-info-host
       (filter (lambda (x)
		 (equal? (address-info-type x) "tcp"))
	       (address-infos (get-host-name)))))




)