;; 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.
;;======================================================================
;; C L I E N T S
;;======================================================================
(require-extension (srfi 18) extras tcp s11n)
(use sqlite3 srfi-1 posix regex regex-case srfi-69 hostinfo md5 message-digest)
;; (use zmq)
(import (prefix sqlite3 sqlite3:))
(use spiffy uri-common intarweb http-client spiffy-request-vars uri-common intarweb directory-utils)
(declare (unit client))
(declare (uses common))
(declare (uses db))
(declare (uses tasks)) ;; tasks are where stuff is maintained about what is running.
(include "common_records.scm")
(include "db_records.scm")
;; client:get-signature
(define (client:get-signature)
(if *my-client-signature* *my-client-signature*
(let ((sig (conc (get-host-name) " " (current-process-id))))
(set! *my-client-signature* sig)
*my-client-signature*)))
;; Not currently used! But, I think it *should* be used!!!
(define (client:logout serverdat)
(let ((ok (and (socket? serverdat)
(cdb:logout serverdat *toppath* (client:get-signature)))))
ok))
;; Do all the connection work, look up the transport type and set up the
;; connection if required.
;;
;; There are two scenarios.
;; 1. We are a test manager and we received *transport-type* and *runremote* via cmdline
;; 2. We are a run tests, list runs or other interactive process and we must figure out
;; *transport-type* and *runremote* from the monitor.db
;;
;; client:setup
;;
;; lookup_server, need to remove *runremote* stuff
;;
(define (client:setup run-id #!key (remaining-tries 100) (failed-connects 0))
(debug:print-info 2 "client:setup remaining-tries=" remaining-tries)
(let* ((tdbdat (tasks:open-db)))
(if (<= remaining-tries 0)
(begin
(debug:print 0 "ERROR: failed to start or connect to server for run-id " run-id)
(exit 1))
(let ((host-info (hash-table-ref/default *runremote* run-id #f)))
(if host-info ;; this is a bit circular. the host-info *is* the start-res FIXME
(let* ((iface (http-transport:server-dat-get-iface host-info))
(port (http-transport:server-dat-get-port host-info))
(start-res (case *transport-type*
((http)(http-transport:client-connect iface port))
((nmsg) host-info) ;; (http-transport:server-dat-get-socket host-info))
(else #f)))
(ping-res (case *transport-type*
((http)(rmt:login-no-auto-client-setup start-res run-id))
((nmsg)(nmsg-transport:ping iface port timeout: 2 socket: #t))
(else #f))))
(if ping-res ;; sucessful login?
(begin
(debug:print-info 2 "client:setup, ping is good using host-info=" host-info ", remaining-tries=" remaining-tries)
start-res) ;; return the server info
;; have host info but no ping. shutdown the current connection and try again
(begin ;; login failed
(debug:print-info 1 "client:setup, ping is bad for start-res=" start-res " and *runremote*=" host-info)
(case *transport-type*
((http)(http-transport:close-connections run-id)))
(hash-table-delete! *runremote* run-id)
(if (< remaining-tries 8)
(thread-sleep! 5)
(thread-sleep! 1))
(client:setup run-id remaining-tries: (- remaining-tries 1)))))
;; YUK: rename server-dat here
(let* ((server-dat (tasks:get-server (db:delay-if-busy tdbdat) run-id)))
(debug:print-info 4 "client:setup server-dat=" server-dat ", remaining-tries=" remaining-tries)
(if server-dat
(let* ((iface (tasks:hostinfo-get-interface server-dat))
(hostname (tasks:hostinfo-get-hostname server-dat))
(port (tasks:hostinfo-get-port server-dat))
(start-res (case *transport-type*
((http)(http-transport:client-connect iface port))
((nmsg)(nmsg-transport:client-connect hostname port))))
(ping-res (case *transport-type*
((http)(rmt:login-no-auto-client-setup start-res run-id))
((nmsg)(http-transport:server-dat-get-socket start-res))))) ;; socket is the result of a ping
(if (and start-res
ping-res)
(begin
(hash-table-set! *runremote* run-id start-res)
(debug:print-info 2 "connected to " (http-transport:server-dat-make-url start-res))
start-res)
(begin ;; login failed but have a server record, clean out the record and try again
(debug:print-info 0 "client:setup, login failed, will attempt to start server ... start-res=" start-res ", run-id=" run-id ", server-dat=" server-dat)
(case *transport-type*
((http)(http-transport:close-connections run-id)))
(hash-table-delete! *runremote* run-id)
(tasks:server-force-clean-run-record (db:delay-if-busy tdbdat)
run-id
(tasks:hostinfo-get-interface server-dat)
(tasks:hostinfo-get-port server-dat)
" client:setup (server-dat = #t)")
(thread-sleep! 2)
(server:try-running run-id)
(thread-sleep! 10) ;; give server a little time to start up
(client:setup run-id remaining-tries: (- remaining-tries 1)))))
(begin ;; no server registered
(let ((num-available (tasks:num-in-available-state (db:dbdat-get-db tdbdat) run-id)))
(debug:print-info 0 "client:setup, no server registered, remaining-tries=" remaining-tries " num-available=" num-available)
(thread-sleep! 2)
(if (< num-available 2)
(begin
(server:try-running run-id)))
(thread-sleep! 10) ;; give server a little time to start up
(client:setup run-id remaining-tries: (- remaining-tries 1)))))))))))
;; keep this as a function to ease future
(define (client:start run-id server-info)
(http-transport:client-connect (tasks:hostinfo-get-interface server-info)
(tasks:hostinfo-get-port server-info)))
;; client:signal-handler
(define (client:signal-handler signum)
(signal-mask! signum)
(handle-exceptions
exn
(debug:print " ... exiting ...")
(let ((th1 (make-thread (lambda ()
"") ;; do nothing for now (was flush out last call if applicable)
"eat response"))
(th2 (make-thread (lambda ()
(debug:print 0 "ERROR: Received ^C, attempting clean exit. Please be patient and wait a few seconds before hitting ^C again.")
(thread-sleep! 1) ;; give the flush one second to do it's stuff
(debug:print 0 " Done.")
(exit 4))
"exit on ^C timer")))
(thread-start! th2)
(thread-start! th1)
(thread-join! th2))))
;; client:launch
;; Need to set the signal handler somewhere other than here as this
;; routine will go away.
;;
(define (client:launch run-id)
(set-signal-handler! signal/int client:signal-handler)
(if (client:setup run-id)
(debug:print-info 2 "connected as client")
(begin
(debug:print 0 "ERROR: Failed to connect as client")
(exit))))