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;; Call this to start the actual server
;;
;; all routes though here end in exit ...
(define (server:launch transport)
(if (not *toppath*)
(if (not (setup-for-run))
(begin
(debug:print 0 "ERROR: cannot find megatest.config, exiting")
(exit))))
(debug:print-info 2 "Starting server using " transport " transport")
(set! *transport-type* transport)
(case transport
((fs) (exit)) ;; there is no "fs" transport
((http) (http-transport:launch))
((zmq) (zmq-transport:launch))
(else
(debug:print "WARNING: unrecognised transport " transport)
(exit))))
;;======================================================================
;; Q U E U E M A N A G E M E N T
;;======================================================================
;; We don't want to flush the queue if it was just flushed
(define *server:last-write-flush* (current-milliseconds))
;; Flush the queue every third of a second. Can we assume that setup-for-run
;; has already been done?
(define (server:write-queue-handler)
(if (setup-for-run)
(let ((db (open-db)))
(let loop ()
(let ((last-write-flush-time #f))
(mutex-lock! *incoming-mutex*)
(set! last-write-flush-time *server:last-write-flush*)
(mutex-unlock! *incoming-mutex*)
(if (> (- (current-milliseconds) last-write-flush-time) 10)
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;; Call this to start the actual server
;;
;; all routes though here end in exit ...
(define (server:launch transport)
(if (not *toppath*)
(if (not (launch:setup-for-run))
(begin
(debug:print 0 "ERROR: cannot find megatest.config, exiting")
(exit))))
(debug:print-info 2 "Starting server using " transport " transport")
(set! *transport-type* transport)
(case transport
((fs) (exit)) ;; there is no "fs" server transport
((http) (http-transport:launch))
((zmq) (zmq-transport:launch))
(else
(debug:print "WARNING: unrecognised transport " transport)
(exit))))
;;======================================================================
;; Q U E U E M A N A G E M E N T
;;======================================================================
;; We don't want to flush the queue if it was just flushed
(define *server:last-write-flush* (current-milliseconds))
;; Flush the queue every third of a second. Can we assume that setup-for-run
;; has already been done?
(define (server:write-queue-handler)
(if (launch:setup-for-run)
(let ((db (open-db)))
(let loop ()
(let ((last-write-flush-time #f))
(mutex-lock! *incoming-mutex*)
(set! last-write-flush-time *server:last-write-flush*)
(mutex-unlock! *incoming-mutex*)
(if (> (- (current-milliseconds) last-write-flush-time) 10)
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(let ((pub-socket (vector-ref *runremote* 1)))
(send-message pub-socket return-addr send-more: #t)
(send-message pub-socket (db:obj->string (vector success/fail query-sig result)))))
(else
(debug:print 0 "ERROR: unrecognised transport type: " *transport-type*)
result)))
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(let ((pub-socket (vector-ref *runremote* 1)))
(send-message pub-socket return-addr send-more: #t)
(send-message pub-socket (db:obj->string (vector success/fail query-sig result)))))
(else
(debug:print 0 "ERROR: unrecognised transport type: " *transport-type*)
result)))
(define (server:ensure-running)
(let loop ((servers (open-run-close tasks:get-best-server tasks:open-db))
(trycount 0))
(if (or (not servers)
(null? servers))
(begin
(if (even? trycount) ;; just do the server start every other time through this loop (every 8 seconds)
(let ((cmdln (conc (if (getenv "MT_MEGATEST") (getenv "MT_MEGATEST") "megatest")
" -server - -daemonize")))
(debug:print 0 "INFO: Starting server (" cmdln ") as none running ...")
;; (server:launch (string->symbol (args:get-arg "-transport" "http"))))
;; no need to use fork, no need to do the list-servers trick. Just start the damn server, it will exit on it's own
;; if there is an existing server
(system cmdln)
(thread-sleep! 3)
;; (process-run (car (argv)) (list "-server" "-" "-daemonize" "-transport" (args:get-arg "-transport" "http")))
)
(begin
(debug:print-info 0 "Waiting for server to start")
(thread-sleep! 4)))
(if (< trycount 10)
(loop (open-run-close tasks:get-best-server tasks:open-db)
(+ trycount 1))
(debug:print 0 "WARNING: Couldn't start or find a server.")))
(debug:print 2 "INFO: Server(s) running " servers)
)))
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