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;; Copyright 2006-2012, Matthew Welland.
;;
;; This program is made available under the GNU GPL version 2.0 or
;; greater. See the accompanying file COPYING for details.
;;
;; This program is distributed WITHOUT ANY WARRANTY; without even the
;; implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
;; PURPOSE.
(require-extension (srfi 18) extras tcp rpc)
(import (prefix rpc rpc:))
(use sqlite3 srfi-1 posix regex regex-case srfi-69 hostinfo)
(import (prefix sqlite3 sqlite3:))
(declare (unit server))
(declare (uses common))
(declare (uses db))
(declare (uses tests))
(include "common_records.scm")
(include "db_records.scm")
;; procstr is the name of the procedure to be called as a string
(define (server:autoremote procstr params)
(handle-exceptions
exn
(begin
(debug:print 1 "Remote failed for " proc " " params)
(apply (eval (string->symbol procstr)) params))
;; (if *runremote*
;; (apply (eval (string->symbol (conc "remote:" procstr))) params)
(apply (eval (string->symbol procstr)) params)))
(define (server:start db hostn)
(debug:print 0 "Attempting to start the server ...")
(let ((host:port (db:get-var db "SERVER"))) ;; do whe already have a server running?
(if host:port
(set! *runremote* (let* ((lst (string-split host:port ":"))
(port (if (> (length lst) 1)
(string->number (cadr lst))
#f)))
(if port (vector (car lst) port) #f)))
(let* ((rpc:listener (server:find-free-port-and-open (rpc:default-server-port)))
(th1 (make-thread
(cute (rpc:make-server rpc:listener) "rpc:server")
'rpc:server))
;; (th2 (make-thread (lambda ()(db:updater))))
(hostname (if (string=? "-" hostn)
(get-host-name)
hostn))
(ipaddrstr (if (string=? "-" hostn)
(string-intersperse (map number->string (u8vector->list (hostname->ip hostname))) ".")
#f))
(host:port (conc (if ipaddrstr ipaddrstr hostname) ":" (rpc:default-server-port))))
(debug:print 0 "Server started on " host:port)
(db:set-var db "SERVER" host:port)
(set! *cache-on* #t)
;; can use this to run most anything at the remote
(rpc:publish-procedure!
'remote:run
(lambda (procstr . params)
(server:autoremote procstr params)))
(rpc:publish-procedure!
'server:login
(lambda (toppath)
(set! *last-db-access* (current-seconds))
(if (equal? *toppath* toppath)
(begin
(debug:print-info 2 "login successful")
#t)
#f)))
;;======================================================================
;; db specials here
;;======================================================================
;; remote call to open-run-close
(rpc:publish-procedure!
'rdb:open-run-close
(lambda (procname . remargs)
(debug:print-info 12 "Remote call of rdb:open-run-close " procname " " remargs)
(set! *last-db-access* (current-seconds))
(apply open-run-close (eval procname) remargs)))
(rpc:publish-procedure!
'cdb:test-set-status-state
(lambda (test-id status state msg)
(debug:print-info 12 "Remote call of cdb:test-set-status-state test-id=" test-id ", status=" status ", state=" state ", msg=" msg)
(cdb:test-set-status-state test-id status state msg)))
(rpc:publish-procedure!
'cdb:test-rollup-test_data-pass-fail
(lambda (test-id)
(debug:print-info 12 "Remote call of cdb:test-rollup-test_data-pass-fail " test-id)
(cdb:test-rollup-test_data-pass-fail test-id)))
(rpc:publish-procedure!
'cdb:pass-fail-counts
(lambda (test-id fail-count pass-count)
(debug:print-info 12 "Remote call of cdb:pass-fail-counts " test-id " passes: " pass-count " fails: " fail-count)
(cdb:pass-fail-counts test-id fail-count pass-count)))
(rpc:publish-procedure!
'cdb:tests-register-test
(lambda (db run-id test-name item-path)
(debug:print-info 12 "Remote call of cdb:tests-register-test " run-id " testname: " test-name " item-path: " item-path)
(cdb:tests-register-test db run-id test-name item-path)))
(rpc:publish-procedure!
'cdb:flush-queue
(lambda ()
(debug:print-info 12 "Remote call of cdb:flush-queue")
(cdb:flush-queue)))
;;======================================================================
;; end of publish-procedure section
;;======================================================================
(set! *rpc:listener* rpc:listener)
(sqlite3:execute db "DELETE FROM metadat WHERE var='SERVER' and val=?;" host:port))
#f ;; for db
#f) ;; for a param
(let loop ((n 0))
(let ((queue-len 0))
(thread-sleep! (random 5))
(mutex-lock! *incoming-mutex*)
(set! queue-len (length *incoming-data*))
(mutex-unlock! *incoming-mutex*)
(if (> queue-len 0)
(begin
(debug:print-info 0 "Queue not flushed, waiting ...")
(loop (+ n 1)))))
)))
(db:updater)
(thread-start! th1)
;; (debug:print 0 "Server started on port " (rpc:default-server-port) "...")
;; (thread-start! th2)
;; (thread-join! th2)
;; return th2 for the calling process to do a join with
th1
)))) ;; rpc:server)))
(define (server:keep-running db host:port)
;; if none running or if > 20 seconds since
;; server last used then start shutdown
(let loop ((count 0))
(thread-sleep! 20) ;; no need to do this very often
(let ((numrunning (db:get-count-tests-running db)))
(if (or (> numrunning 0)
(> (+ *last-db-access* 60)(current-seconds)))
(begin
(debug:print-info 0 "Server continuing, tests running: " numrunning ", seconds since last db access: " (- (current-seconds) *last-db-access*))
(loop (+ 1 count)))
(begin
(debug:print-info 0 "Starting to shutdown the server side")
;; need to delete only *my* server entry (future use)
(sqlite3:execute db "DELETE FROM metadat WHERE var='SERVER' AND val like ?;" host:port)
(thread-sleep! 10)
(debug:print-info 0 "Max cached queries was " *max-cache-size*)
(debug:print-info 0 "Server shutdown complete. Exiting")
;; (exit)))
)))))
(define (server:find-free-port-and-open port)
(handle-exceptions
exn
(begin
(print "Failed to bind to port " (rpc:default-server-port) ", trying next port")
(server:find-free-port-and-open (+ port 1)))
(rpc:default-server-port port)
(tcp-read-timeout 240000)
(tcp-listen (rpc:default-server-port) 10000)))
(define (server:client-setup)
(if *runremote*
(begin
(debug:print 0 "ERROR: Attempt to connect to server but already connected")
#f)
(let* ((hostinfo (open-run-close db:get-var #f "SERVER"))
(hostdat (if hostinfo (string-split hostinfo ":") #f))
(host (if hostinfo (car hostdat) #f))
(port (if (and hostinfo (> (length hostdat) 1))(cadr hostdat) #f)))
(if (and port
(string->number port))
(let ((portn (string->number port)))
(debug:print-info 2 "Setting up to connect to host " host ":" port)
(handle-exceptions
exn
(begin
(debug:print 0 "ERROR: Failed to open a connection to the server at host: " host " port: " port)
(debug:print 0 " EXCEPTION: " ((condition-property-accessor 'exn 'message) exn))
;; (open-run-close
;; (lambda (db . param)
;; (sqlite3:execute db "DELETE FROM metadat WHERE var='SERVER'"))
;; #f)
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;; Copyright 2006-2012, Matthew Welland.
;;
;; This program is made available under the GNU GPL version 2.0 or
;; greater. See the accompanying file COPYING for details.
;;
;; This program is distributed WITHOUT ANY WARRANTY; without even the
;; implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
;; PURPOSE.
(require-extension (srfi 18) extras tcp rpc s11n)
(import (prefix rpc rpc:))
(use sqlite3 srfi-1 posix regex regex-case srfi-69 hostinfo)
(import (prefix sqlite3 sqlite3:))
(declare (unit server))
(declare (uses common))
(declare (uses db))
(declare (uses tests))
(include "common_records.scm")
(include "db_records.scm")
(define a (with-output-to-string (lambda ()(serialize '(1 2 3 "Hello and goodbye" #t)))))
(define b (with-input-from-string a (lambda ()(deserialize))))
(define (server:run hostn)
(debug:print 0 "Attempting to start the server ...")
(let ((host:port (open-run-close db:get-var db "SERVER"))) ;; do whe already have a server running?
(if host:port
(set! *runremote* host:port)
(let* ((zmq-socket #f)
(hostname (if (string=? "-" hostn)
(get-host-name)
hostn))
(ipaddrstr (let ((ipstr (if (string=? "-" hostn)
(string-intersperse (map number->string (u8vector->list (hostname->ip hostname))) ".")
#f)))
(if ipstr ipstr hostname))))
(set! zmq-socket (server:find-free-port-and-open ipaddrstr))
(set! *cache-on* #t)
;; what to do when we quit
;;
(on-exit (lambda ()
(open-run-close
(lambda (db . params)
(sqlite3:execute db "DELETE FROM metadat WHERE var='SERVER';"))
#f ;; for db
#f) ;; for a param
(let loop ()
(let ((queue-len 0))
(thread-sleep! (random 5))
(mutex-lock! *incoming-mutex*)
(set! queue-len (length *incoming-data*))
(mutex-unlock! *incoming-mutex*)
(if (> queue-len 0)
(begin
(debug:print-info 0 "Queue not flushed, waiting ...")
(loop)))))))
;; The heavy lifting
;;
(let loop ()
(let* ((rawmsg (receive-message zmq-socket))
(params (with-input-from-string rawmsg (lambda ()(deserialize))))
(res #f))
(debug:print-info 12 "server=> received msg=" msg)
(set! res (cdb:cached-access params))
(debug:print-info 12 "server=> processed msg=" msg)
(send-message zmq-socket res)
(loop)))))))
;; run server:keep-running in a parallel thread to monitor that the db is being
;; used and to shutdown after sometime if it is not.
;;
(define (server:keep-running db host:port)
;; if none running or if > 20 seconds since
;; server last used then start shutdown
(let loop ((count 0))
(thread-sleep! 20) ;; no need to do this very often
(let ((numrunning (db:get-count-tests-running db)))
(if (or (> numrunning 0)
(> (+ *last-db-access* 60)(current-seconds)))
(begin
(debug:print-info 0 "Server continuing, tests running: " numrunning ", seconds since last db access: " (- (current-seconds) *last-db-access*))
(loop (+ 1 count)))
(begin
(debug:print-info 0 "Starting to shutdown the server side")
;; need to delete only *my* server entry (future use)
(sqlite3:execute db "DELETE FROM metadat WHERE var='SERVER';")
(thread-sleep! 10)
(debug:print-info 0 "Max cached queries was " *max-cache-size*)
(debug:print-info 0 "Server shutdown complete. Exiting")
;; (exit)))
)))))
(define (server:find-free-port-and-open host s port)
(let ((s (if s s (make-socket 'rep)))
(p (if (number? port) port 5555)))
(handle-exceptions
exn
(begin
(print "Failed to bind to port " p ", trying next port")
(server:find-free-port-and-open host s (+ p 1)))
(let ((zmq-url (conc "tcp://" host ":" p)))
(bind-socket s zmq-url)
(set! *runremote* zmq-url)
(debug:print 0 "Server started on " zmq-url)
(db:set-var db "SERVER" zmq-url)
s))))
(define (server:client-setup)
(if *runremote*
(begin
(debug:print 0 "ERROR: Attempt to connect to server but already connected")
#f)
(let* ((hostinfo (open-run-close db:get-var #f "SERVER"))
(zmq-socket (make-socket 'req)))
(if hostinfo
(begin
(debug:print-info 2 "Setting up to connect to " hostinfo)
(handle-exceptions
exn
(begin
(debug:print 0 "ERROR: Failed to open a connection to the server at host: " host " port: " port)
(debug:print 0 " EXCEPTION: " ((condition-property-accessor 'exn 'message) exn))
(set! *runremote* #f))
(if (and (not (args:get-arg "-server")) ;; no point in the server using the server using the server
((rpc:procedure 'server:login host portn) *toppath*))
(begin
(debug:print-info 2 "Logged in and connected to " host ":" port)
(set! *runremote* (vector host portn)))
(begin
(debug:print-info 2 "Failed to login or connect to " host ":" port)
(set! *runremote* #f)))))
(debug:print-info 2 "no server available")))))
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