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(string-intersperse
(map number->string
(u8vector->list
(if res res (hostname->ip hostname)))) ".")))
(define (http-transport:run hostn run-id server-id)
(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* (;; (iface (if (string=? "-" hostn)
;; #f ;; (get-host-name)
;; hostn))
(db #f) ;; (open-db)) ;; we don't want the server to be opening and closing the db unnecesarily
(start-port (if (and (args:get-arg "-port")
(string->number (args:get-arg "-port")))
(string->number (args:get-arg "-port"))
(if (and (config-lookup *configdat* "server" "port")
(string->number (config-lookup *configdat* "server" "port")))
(string->number (config-lookup *configdat* "server" "port"))
(+ 5000 (random 1001)))))
(link-tree-path (config-lookup *configdat* "setup" "linktree")))
(set! db *inmemdb*)
(root-path (if link-tree-path
link-tree-path
(current-directory))) ;; WARNING: SECURITY HOLE. FIX ASAP!
(handle-directory spiffy-directory-listing)
;; http-transport:handle-directory) ;; simple-directory-handler)
;; Setup the web server and a /ctrl interface
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(string-intersperse
(map number->string
(u8vector->list
(if res res (hostname->ip hostname)))) ".")))
(define (http-transport:run hostn run-id server-id)
(debug:print 2 "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)))
(start-port (open-run-close tasks:server-get-next-port tasks:open-db))
(link-tree-path (config-lookup *configdat* "setup" "linktree")))
(set! db *inmemdb*)
(root-path (if link-tree-path
link-tree-path
(current-directory))) ;; WARNING: SECURITY HOLE. FIX ASAP!
(handle-directory spiffy-directory-listing)
;; http-transport:handle-directory) ;; simple-directory-handler)
;; Setup the web server and a /ctrl interface
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exn
(begin
(print-error-message exn)
(if (< portnum 9000)
(begin
(debug:print 0 "WARNING: failed to start on portnum: " portnum ", trying next port")
(thread-sleep! 0.1)
(http-transport:try-start-server ipaddrstr (+ portnum 1) server-id))
(print "ERROR: Tried and tried but could not start the server")))
;; any error in following steps will result in a retry
(set! *server-info* (list ipaddrstr portnum))
(open-run-close tasks:server-set-interface-port
tasks:open-db
server-id
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exn
(begin
(print-error-message exn)
(if (< portnum 9000)
(begin
(debug:print 0 "WARNING: failed to start on portnum: " portnum ", trying next port")
(thread-sleep! 0.1)
;; get_next_port goes here
(http-transport:try-start-server ipaddrstr (+ portnum 1) server-id))
(print "ERROR: Tried and tried but could not start the server")))
;; any error in following steps will result in a retry
(set! *server-info* (list ipaddrstr portnum))
(open-run-close tasks:server-set-interface-port
tasks:open-db
server-id
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(set! *http-connections-next-cleanup* (+ (current-seconds) 10))
(mutex-unlock! *http-mutex*))
(define (http-transport:inc-requests-and-prep-to-close-all-connections)
(mutex-lock! *http-mutex*)
(set! *http-requests-in-progress* (+ 1 *http-requests-in-progress*)))
;; (system "megatest -list-servers | grep alive || megatest -server - -daemonize && sleep 4")
;; <html>
;; <head></head>
;; <body>1 Hello, world! Goodbye Dolly</body></html>
;; Send msg to serverdat and receive result
(define (http-transport:client-send-receive serverdat msg #!key (numretries 30))
(let* (;; (url (http-transport:make-server-url serverdat))
(fullurl (if (list? serverdat)
(caddr serverdat)
(begin
(debug:print 0 "FATAL ERROR: http-transport:client-send-receive called with no server info")
(exit 1)))) ;; (conc url "/ctrl")) ;; (conc url "/?dat=" msg)))
(res #f))
(handle-exceptions
exn
(begin
(print "ERROR IN http-transport:client-send-receive " ((condition-property-accessor 'exn 'message) exn))
(thread-sleep! 2)
(if (> numretries 0)
(http-transport:client-send-receive serverdat msg numretries: (- numretries 1))))
(begin
(debug:print-info 11 "fullurl=" fullurl "\n")
;; set up the http-client here
(max-retry-attempts 5)
;; consider all requests indempotent
(retry-request? (lambda (request)
#t)) ;; (thread-sleep! (/ (if (> numretries 100) 100 numretries) 10))
;; (set! numretries (- numretries 1))
;; #t))
;; send the data and get the response
;; extract the needed info from the http data and
;; process and return it.
(let* ((send-recieve (lambda ()
(mutex-lock! *http-mutex*)
(set! res (with-input-from-request
fullurl
(list (cons 'dat msg))
read-string))
(close-all-connections!)
(mutex-unlock! *http-mutex*)))
(time-out (lambda ()
(thread-sleep! 45)
(if (not res)
(begin
(debug:print 0 "WARNING: communication with the server timed out.")
(mutex-unlock! *http-mutex*)
(http-transport:client-send-receive serverdat msg numretries: (- numretries 1))
(if (< numretries 3) ;; on last try just exit
(begin
(debug:print 0 "ERROR: communication with the server timed out. Giving up.")
(exit 1)))))))
(th1 (make-thread send-recieve "with-input-from-request"))
(th2 (make-thread time-out "time out")))
(thread-start! th1)
(thread-start! th2)
(thread-join! th1)
(thread-terminate! th2)
(debug:print-info 11 "got res=" res)
(let ((match (string-search (regexp "<body>(.*)<.body>") res)))
(debug:print-info 11 "match=" match)
(let ((final (cadr match)))
(debug:print-info 11 "final=" final)
final)))))))
(debug:print 0 "FATAL ERROR: http-transport:client-send-receive called with no server info")
(exit 1))))
(res #f))
(handle-exceptions
exn
(begin
;; TODO: Send this output to a log file so it isn't lost when running as daemon
(print "ERROR IN http-transport:client-send-receive " ((condition-property-accessor 'exn 'message) exn))
(if (> numretries 0)
(begin
(if (> (random 100) 80)(server:ensure-running run-id)) ;; every so often try starting a server
(http-transport:client-api-send-receive run-id serverdat cmd params numretries: (- numretries 1)))))
(begin
(debug:print-info 11 "fullurl=" fullurl "\n")
#t)) ;; (thread-sleep! (/ (if (> numretries 100) 100 numretries) 10))
;; (set! numretries (- numretries 1))
;; #t))
;; (with-input-from-request "http://localhost/echo-service"
;; '((test . "value")) read-string)
;; (let ((dat #f)
;; (cleanup (http-transport:get-time-to-cleanup)))
;; (if cleanup
;; (http-transport:inc-requests-and-prep-to-close-all-connections)
;; (http-transport:inc-requests-count))
;; ;; Do the actual data transfer NB// KEPP THIS IN SYNC WITH http-transport:client-send-receive
(mutex-lock! *http-mutex*)
(set! res (with-input-from-request ;; was dat
fullurl
(list (cons 'key "thekey")
(cons 'cmd cmd)
(cons 'params params))
read-string))
;; Shouldn't this be a call to the managed call-all-connections stuff above?
(close-all-connections!)
(mutex-unlock! *http-mutex*)
))
;; (if cleanup
;; ;; mutex already set
;; (begin
;; (set! res dat)
;; (http-transport:dec-requests-count-and-close-all-connections))
;; (http-transport:dec-requests-count
;; (lambda ()
;; (set! res dat)))))))
(if (not res)
(begin
(debug:print 0 "WARNING: communication with the server timed out.")
(mutex-unlock! *http-mutex*)
(http-transport:client-api-send-receive serverdat cmd params numretries: (- numretries 1))
(if (< numretries 3) ;; on last try just exit
(begin
(debug:print 0 "ERROR: communication with the server timed out. Giving up.")
(exit 1)))))))
(let* ((login-res #f)
(uri-dat (make-request method: 'POST uri: (uri-reference (conc "http://" iface ":" port "/ctrl"))))
(serverdat (list iface port uri-dat uri-api-dat)))
(hash-table-set! *runremote* run-id serverdat) ;; may or may not be good ...
(set! login-res (rmt:login run-id))
(exit 1)))))
;; run http-transport:keep-running in a parallel thread to monitor that the db is being
;; used and to shutdown after sometime if it is not.
;;
(define (http-transport:keep-running server-id)
;; if none running or if > 20 seconds since
;; server last used then start shutdown
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(set! *http-connections-next-cleanup* (+ (current-seconds) 10))
(mutex-unlock! *http-mutex*))
(define (http-transport:inc-requests-and-prep-to-close-all-connections)
(mutex-lock! *http-mutex*)
(set! *http-requests-in-progress* (+ 1 *http-requests-in-progress*)))
;; Send "cmd" with json payload "params" to serverdat and receive result
;;
(define (http-transport:client-api-send-receive run-id serverdat cmd params #!key (numretries 30))
(let* ((fullurl (if (list? serverdat)
(cadddr serverdat) ;; this is the uri for /api
(begin
(debug:print 0 "FATAL ERROR: http-transport:client-api-send-receive called with no server info")
(exit 1))))
(res #f))
(handle-exceptions
exn
#f
(begin
(debug:print-info 11 "fullurl=" fullurl ", cmd=" cmd ", params=" params ", run-id=" run-id "\n")
;; set up the http-client here
(max-retry-attempts 5)
;; consider all requests indempotent
(retry-request? (lambda (request)
#t))
;; send the data and get the response
;; extract the needed info from the http data and
;; process and return it.
(let* ((send-recieve (lambda ()
(mutex-lock! *http-mutex*)
(set! res (with-input-from-request ;; was dat
fullurl
(list (cons 'key "thekey")
(cons 'cmd cmd)
(cons 'params params))
read-string))
;; Shouldn't this be a call to the managed call-all-connections stuff above?
(close-all-connections!)
(mutex-unlock! *http-mutex*)
))
(time-out (lambda ()
(thread-sleep! 45)
#f))
(th1 (make-thread send-recieve "with-input-from-request"))
(th2 (make-thread time-out "time out")))
(thread-start! th1)
(thread-start! th2)
(thread-join! th1)
(thread-terminate! th2)
(debug:print-info 11 "got res=" res)
res)))))
;;
;; connect
;;
(define (http-transport:client-connect run-id iface port)
(let* ((uri-dat (make-request method: 'POST uri: (uri-reference (conc "http://" iface ":" port "/ctrl"))))
(uri-api-dat (make-request method: 'POST uri: (uri-reference (conc "http://" iface ":" port "/api"))))
(serverdat (list iface port uri-dat uri-api-dat))
(login-res (rmt:login-no-auto-client-setup serverdat run-id)))
(hash-table-set! *runremote* run-id serverdat) ;; may or may not be good ...
(if (and (list? login-res)
(car login-res))
(begin
(debug:print-info 2 "Logged in and connected to " iface ":" port)
(hash-table-set! *runremote* run-id serverdat)
serverdat)
(begin
(debug:print-info 0 "ERROR: Failed to login or connect to " iface ":" port)
#f))))
;; run http-transport:keep-running in a parallel thread to monitor that the db is being
;; used and to shutdown after sometime if it is not.
;;
(define (http-transport:keep-running server-id)
;; if none running or if > 20 seconds since
;; server last used then start shutdown
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(tdb (tasks:open-db))
(server-timeout (let ((tmo (config-lookup *configdat* "server" "timeout")))
(if (and (string? tmo)
(string->number tmo))
(* 60 60 (string->number tmo))
;; default to three days
(* 3 24 60 60)))))
(tasks:server-set-state! tdb server-id "running")
(let loop ((count 0))
;; Use this opportunity to sync the inmemdb to db
(let ((start-time (current-milliseconds))
(sync-time #f)
(rem-time #f))
(if *inmemdb* (db:sync-touched *inmemdb* force-sync: #t))
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(tdb (tasks:open-db))
(server-timeout (let ((tmo (config-lookup *configdat* "server" "timeout")))
(if (and (string? tmo)
(string->number tmo))
(* 60 60 (string->number tmo))
;; default to three days
(* 3 24 60 60)))))
;;
;; set_running
;;
(tasks:server-set-state! tdb server-id "running")
(let loop ((count 0))
;; Use this opportunity to sync the inmemdb to db
(let ((start-time (current-milliseconds))
(sync-time #f)
(rem-time #f))
(if *inmemdb* (db:sync-touched *inmemdb* force-sync: #t))
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(if (or (not (equal? sdat (list iface port)))
(not server-id))
(begin
(debug:print-info 0 "interface changed, refreshing iface and port info")
(set! iface (car sdat))
(set! port (cadr sdat))))
;; NOTE: Get rid of this mechanism! It really is not needed...
;; (open-run-close tasks:server-update-heartbeat tasks:open-db spid)
(tasks:server-update-heartbeat tdb server-id)
;; (if ;; (or (> numrunning 0) ;; stay alive for two days after last access
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(if (or (not (equal? sdat (list iface port)))
(not server-id))
(begin
(debug:print-info 0 "interface changed, refreshing iface and port info")
(set! iface (car sdat))
(set! port (cadr sdat))))
;; Transfer *last-db-access* to last-access to use in checking that we are still alive
(mutex-lock! *heartbeat-mutex*)
(set! last-access *last-db-access*)
(mutex-unlock! *heartbeat-mutex*)
;; (debug:print 11 "last-access=" last-access ", server-timeout=" server-timeout)
;;
;; no_traffic
;;
(if (and *server-run*
(> (+ last-access server-timeout)
(current-seconds)))
(begin
(debug:print-info 0 "Server continuing, seconds since last db access: " (- (current-seconds) last-access))
(loop 0))
(begin
(debug:print-info 0 "Starting to shutdown the server.")
;; need to delete only *my* server entry (future use)
(set! *time-to-exit* #t)
(if *inmemdb* (db:sync-touched *inmemdb* force-sync: #t))
;;
;; start_shutdown
;;
( tasks:server-set-state! tdb server-id "shutting-down")
(thread-sleep! 5)
(debug:print-info 0 "Max cached queries was " *max-cache-size*)
(debug:print-info 0 "Number of cached writes " *number-of-writes*)
(debug:print-info 0 "Average cached write time "
(if (eq? *number-of-writes* 0)
"n/a (no writes)"
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*number-non-write-queries*))
" ms")
(debug:print-info 0 "Server shutdown complete. Exiting")
(tasks:server-delete-record! tdb server-id)
(exit))))))
;; all routes though here end in exit ...
(define (http-transport:launch run-id)
(set! *run-id* run-id)
(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")
(if (args:get-arg "-daemonize")
(daemon:ize))
(if *toppath*
(let* ((th2 (make-thread (lambda ()
(http-transport:run
(if (args:get-arg "-server")
(args:get-arg "-server")
"-")
run-id
server-id)) "Server run"))
(th3 (make-thread (lambda ()
(http-transport:keep-running server-id))
"Keep running")))
;; Database connection
(set! *inmemdb* (db:setup run-id))
(thread-start! th2)
(thread-start! th3)
(set! *didsomething* #t)
(thread-join! th2))
(debug:print 0 "ERROR: Failed to setup for megatest")))
;; (sdb:qry 'finalize)
(exit)))
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*number-non-write-queries*))
" ms")
(debug:print-info 0 "Server shutdown complete. Exiting")
(tasks:server-delete-record! tdb server-id)
(exit))))))
;; all routes though here end in exit ...
;;
;; start_server?
;;
(define (http-transport:launch run-id)
(set! *run-id* run-id)
(if (args:get-arg "-daemonize")
(daemon:ize))
(if (server:check-if-running run-id)
(begin
(debug:print 0 "INFO: Server for run-id " run-id " already running")
(exit 0)))
(let ((server-id (open-run-close tasks:server-lock-slot tasks:open-db run-id)))
(if (not server-id)
(begin
;; since we didn't get the server lock we are going to clean up and bail out
(debug:print-info 2 "INFO: server pid=" (current-process-id) ", hostname=" (get-host-name) " not starting due to other candidates ahead in start queue")
(open-run-close tasks:server-delete-records-for-this-pid tasks:open-db))
(let* ((th2 (make-thread (lambda ()
(http-transport:run
(if (args:get-arg "-server")
(args:get-arg "-server")
"-")
run-id
server-id)) "Server run"))
(th3 (make-thread (lambda ()
(http-transport:keep-running server-id))
"Keep running")))
;; Database connection
(set! *inmemdb* (db:setup run-id))
(thread-start! th2)
(thread-start! th3)
(set! *didsomething* #t)
(thread-join! th2)
(exit)))))
(define (http-transport:server-signal-handler signum)
(handle-exceptions
exn
(debug:print " ... exiting ...")
(let ((th1 (make-thread (lambda ()
(thread-sleep! 1))
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