Megatest

;; Always use two digit decimal
;; 1.01, 1.02...1.10,1.11 ... 1.99,2.00..

(declare (unit megatest-version))

(define megatest-version 1.5115)

		        "-gui"
			;; misc
			"-archive"
			"-repl"
			"-lock"
			"-unlock"
			"-listservers"
			;; mist queries
			"-list-disks"
			"-list-targets"
			;; queries
			"-test-paths" ;; get path(s) to a test, ordered by youngest first

			"-runall"    ;; run all tests
			"-remove-runs"
			"-usequeue"
			"-rebuild-db"

;; Misc general calls
;;======================================================================

(if (args:get-arg "-env2file")
    (begin
      (save-environment-as-files (args:get-arg "-env2file"))
      (set! *didsomething* #t)))

(if (args:get-arg "-list-targets")
    (print (string-intersperse
	    (sort (map car (hash-table->alist
			    (read-config "runconfigs.config"
					 (make-hash-table) #f))) string<?) "\n")))


(if (args:get-arg "-list-disks")
    (print (string-intersperse 
	    (map cadr (hash-table-ref/default 
		       (read-config "megatest.config" #f #t) 
		       "disks" "'" 
		       ("none" ""))) "\n")))

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

(if (args:get-arg "-server")
    (begin
      (debug:print 2 "Launching server...")
      (server:launch)))

(if (or (args:get-arg "-listservers")
	(args:get-arg "-killserver"))
    (let ((tl (setup-for-run)))
      (if tl 
	  (let ((servers (open-run-close tasks:get-all-servers tasks:open-db))

	    (begin 
	      (debug:print 0 "Failed to setup, exiting")
	      (exit 1)))
	(if (args:get-arg "-server")
	    (open-run-close server:start db (args:get-arg "-server"))
 	    (if (not (or (args:get-arg "-runall")     ;; runall and runtests are allowed to be servers
 			 (args:get-arg "-runtests")))
		(server:client-setup) ;; This is a duplicate startup!!!??? BUG?
		))
	(set! keys (open-run-close db:get-keys db))
	;; have enough to process -target or -reqtarg here
	(if (args:get-arg "-reqtarg")
	    (let* ((runconfigf (conc  *toppath* "/runconfigs.config")) ;; DO NOT EVALUATE ALL 
		   (runconfig  (read-config runconfigf #f #f environ-patt: #f))) 
	      (if (hash-table-ref/default runconfig (args:get-arg "-reqtarg") #f)
		  (keys:target-set-args keys (args:get-arg "-reqtarg") args:arg-hash)

      (debug:print 4 "server:self-ping - I'm alive on " iface ":" port "!")
      (mutex-lock! *heartbeat-mutex*)
      (set! *server-loop-heart-beat* (current-seconds))
      (mutex-unlock! *heartbeat-mutex*)
      (loop))))
    
(define (server:run hostn)
  (debug:print 2 "Attempting to start the server ...")
  (if (not *toppath*)
      (if (not (setup-for-run))
	  (begin
	    (debug:print 0 "ERROR: cannot find megatest.config, cannot start server, exiting")
	    (exit))))
  (let* ((zmq-socket     #f)
	 (zmq-socket-dat #f)

;; 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)
  ;; if none running or if > 20 seconds since 
  ;; server last used then start shutdown

;;  (let ((die-timeout (

  (let loop ((count 0))
    (thread-sleep! 4) ;; no need to do this very often
    (db:write-cached-data)
    ;; (print "Server running, count is " count)
    (if (< count 1) ;; 3x3 = 9 secs aprox
	(loop (+ count 1))
	(let (;; (numrunning            (open-run-close db:get-count-tests-running #f))

	      (begin
		(open-run-close tasks:server-deregister tasks:open-db (cadr server-info) port: (caddr server-info))
		(debug:print 0 "ERROR: Heartbeat failed, committing servercide")
		(exit))
	      (open-run-close tasks:server-update-heartbeat tasks:open-db (car server-info)))
	  ;; (if ;; (or (> numrunning 0) ;; stay alive for two days after last access
	  (if (> (+ *last-db-access* 
		    (* 70 60 60)       ;; 70 hrs is enough that the server will still be available after the weekend 
		    ;; 60              ;; one minute
		    ;; (* 60 60)       ;; one hour
		    )
		 (current-seconds))
	      (begin
		;; (debug:print-info 2 "Server continuing, tests running: " numrunning ", seconds since last db access: " (- (current-seconds) *last-db-access*))
		(debug:print-info 2 "Server continuing, seconds since last db access: " (- (current-seconds) *last-db-access*))
		(loop 0))
	      (begin

       ;; (old-handler)
       ;; (print-call-chain)
       (if (> trynum 0)
	   (server:find-free-port-and-open iface s (+ p 1) trynum: (- trynum 1))
	   (debug:print-info 0 "Tried ports up to " p 
			     " but all were in use. Please try a different port range by starting the server with parameter \" -port N\" where N is the starting port number to use")))
     (let ((zmq-url (conc "tcp://" iface ":" p)))
       (debug:print 2 "Trying to start server on " zmq-url)
       (bind-socket s zmq-url)
       (set! *runremote* #f)
       (debug:print 2 "Server started on " zmq-url)
       (mutex-lock! *heartbeat-mutex*)
       (set! *server-info* (open-run-close tasks:server-register tasks:open-db (current-process-id) iface p 0 'live))
       (mutex-unlock! *heartbeat-mutex*)
       (list iface s port)))))

(define (server:mk-signature)
  (message-digest-string (md5-primitive) 

		   #t)
		 (begin
		   (debug:print-info 2 "Failed to login or connect to " conurl)
		   (set! *runremote* #f)
		   #f)))))
	(if (> numtries 0)
	    (let ((exe (car (argv))))
	      (debug:print-info 2 "No server available, attempting to start one...")
	      (process-run exe (list "-server" "-" "-debug" (conc *verbosity*)))
	      ;; (process-fork (lambda ()
	      ;;   	      (server:launch)
	      ;;   	      (exit) ;; should never get here ....
	      ;;   	      ))
	      (sleep 5) ;; give server time to start
	      ;; we are starting a server, do not try again! That can lead to 
	      ;; recursively starting many processes!!!
	      (server:client-setup numtries: 0))
	    (debug:print-info 1 "Too many attempts, giving up")))))

;; all routes though here end in exit ...
(define (server:launch)
  (if (not *toppath*)
      (if (not (setup-for-run))
	  (begin
	    (debug:print 0 "ERROR: cannot find megatest.config, exiting")
	    (exit))))
  (debug:print-info 2 "Starting the standalone server")
  (let ((hostinfo (open-run-close tasks:get-best-server tasks:open-db)))
    (if hostinfo
	(debug:print-info 2 "NOT starting new server, one is already running on " (car hostinfo) ":" (cadr hostinfo))
	(if *toppath* 
	    (let* ((th1 (make-thread (lambda ()
				       (let ((server-info #f))
					 ;; wait for the server to be online and available
					 (let loop ()
					   (debug:print-info 2 "Waiting for the server to come online before starting heartbeat")
					   (thread-sleep! 2)
					   (mutex-lock! *heartbeat-mutex*)
					   (set! server-info *server-info* )
					   (mutex-unlock! *heartbeat-mutex*)
					   (if (not server-info)(loop)))
					 (debug:print 2 "Server alive, starting self-ping")
					 (server:self-ping (cadr server-info)(caddr server-info)))) "Self ping"))
		   (th2 (make-thread (lambda ()
				       (server:run (args:get-arg "-server"))) "Server run"))
		   (th3 (make-thread (lambda ()
				       (server:keep-running)) "Keep running")))
	      (set! *client-non-blocking-mode* #t)
	      (thread-start! th1)