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;; (string-intersperse (map number->string (u8vector->list (hostname->ip hostname))) ".")
(server:get-best-guess-address hostname)
#f)))
(if ipstr ipstr hostn))) ;; hostname)))
(start-port (portlogger:open-run-close portlogger:find-port))
(link-tree-path (configf:lookup *configdat* "setup" "linktree")))
;; (set! db *inmemdb*)
(debug:print-info 0 #f "portlogger recommended port: " start-port)
(root-path (if link-tree-path
link-tree-path
(current-directory))) ;; WARNING: SECURITY HOLE. FIX ASAP!
(handle-directory spiffy-directory-listing)
(handle-exception (lambda (exn chain)
(signal (make-composite-condition
(make-property-condition
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;; (string-intersperse (map number->string (u8vector->list (hostname->ip hostname))) ".")
(server:get-best-guess-address hostname)
#f)))
(if ipstr ipstr hostn))) ;; hostname)))
(start-port (portlogger:open-run-close portlogger:find-port))
(link-tree-path (configf:lookup *configdat* "setup" "linktree")))
;; (set! db *inmemdb*)
(debug:print-info 0 *default-log-port* "portlogger recommended port: " start-port)
(root-path (if link-tree-path
link-tree-path
(current-directory))) ;; WARNING: SECURITY HOLE. FIX ASAP!
(handle-directory spiffy-directory-listing)
(handle-exception (lambda (exn chain)
(signal (make-composite-condition
(make-property-condition
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(http-transport:try-start-server run-id ipaddrstr start-port server-id)))
;; This is recursively run by http-transport:run until sucessful
;;
(define (http-transport:try-start-server run-id ipaddrstr portnum server-id)
(let ((config-hostname (configf:lookup *configdat* "server" "hostname"))
(tdbdat (tasks:open-db)))
(debug:print-info 0 #f "http-transport:try-start-server run-id=" run-id " ipaddrsstr=" ipaddrstr " portnum=" portnum " server-id=" server-id " config-hostname=" config-hostname)
(handle-exceptions
exn
(begin
(print-error-message exn)
(if (< portnum 64000)
(begin
(debug:print 0 *default-log-port* "WARNING: attempt to start server failed. Trying again ...")
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(http-transport:try-start-server run-id ipaddrstr start-port server-id)))
;; This is recursively run by http-transport:run until sucessful
;;
(define (http-transport:try-start-server run-id ipaddrstr portnum server-id)
(let ((config-hostname (configf:lookup *configdat* "server" "hostname"))
(tdbdat (tasks:open-db)))
(debug:print-info 0 *default-log-port* "http-transport:try-start-server run-id=" run-id " ipaddrsstr=" ipaddrstr " portnum=" portnum " server-id=" server-id " config-hostname=" config-hostname)
(handle-exceptions
exn
(begin
(print-error-message exn)
(if (< portnum 64000)
(begin
(debug:print 0 *default-log-port* "WARNING: attempt to start server failed. Trying again ...")
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(define (http-transport:inc-requests-count)
(mutex-lock! *http-mutex*)
(set! *http-requests-in-progress* (+ 1 *http-requests-in-progress*))
;; Use this opportunity to slow things down iff there are too many requests in flight
(if (> *http-requests-in-progress* 5)
(begin
(debug:print-info 0 #f "Whoa there buddy, ease up...")
(thread-sleep! 1)))
(mutex-unlock! *http-mutex*))
(define (http-transport:dec-requests-count proc)
(mutex-lock! *http-mutex*)
(proc)
(set! *http-requests-in-progress* (- *http-requests-in-progress* 1))
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(define (http-transport:inc-requests-count)
(mutex-lock! *http-mutex*)
(set! *http-requests-in-progress* (+ 1 *http-requests-in-progress*))
;; Use this opportunity to slow things down iff there are too many requests in flight
(if (> *http-requests-in-progress* 5)
(begin
(debug:print-info 0 *default-log-port* "Whoa there buddy, ease up...")
(thread-sleep! 1)))
(mutex-unlock! *http-mutex*))
(define (http-transport:dec-requests-count proc)
(mutex-lock! *http-mutex*)
(proc)
(set! *http-requests-in-progress* (- *http-requests-in-progress* 1))
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;; (debug:print 0 *default-log-port* "WARNING: Failed to communicate with server, trying again, numretries left: " numretries)
;; (http-transport:client-api-send-receive run-id serverdat cmd sparams numretries: (- numretries 1)))
;; (begin
;; (mutex-unlock! *http-mutex*)
;; (tasks:kill-server-run-id run-id)
;; #f))
;; (begin
(debug:print-info 11 #f "fullurl=" fullurl ", cmd=" cmd ", params=" params ", run-id=" run-id "\n")
;; set up the http-client here
(max-retry-attempts 1)
;; consider all requests indempotent
(retry-request? (lambda (request)
#f))
;; send the data and get the response
;; extract the needed info from the http data and
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;; (debug:print 0 *default-log-port* "WARNING: Failed to communicate with server, trying again, numretries left: " numretries)
;; (http-transport:client-api-send-receive run-id serverdat cmd sparams numretries: (- numretries 1)))
;; (begin
;; (mutex-unlock! *http-mutex*)
;; (tasks:kill-server-run-id run-id)
;; #f))
;; (begin
(debug:print-info 11 *default-log-port* "fullurl=" fullurl ", cmd=" cmd ", params=" params ", run-id=" run-id "\n")
;; set up the http-client here
(max-retry-attempts 1)
;; consider all requests indempotent
(retry-request? (lambda (request)
#f))
;; send the data and get the response
;; extract the needed info from the http data and
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#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 #f "got res=" res)
(if (vector? res)
(if (vector-ref res 0)
res
(begin ;; note: this code also called in nmsg-transport - consider consolidating it
(debug:print 0 *default-log-port* "ERROR: error occured at server, info=" (vector-ref res 2))
(debug:print 0 *default-log-port* " client call chain:")
(print-call-chain (current-error-port))
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#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 *default-log-port* "got res=" res)
(if (vector? res)
(if (vector-ref res 0)
res
(begin ;; note: this code also called in nmsg-transport - consider consolidating it
(debug:print 0 *default-log-port* "ERROR: error occured at server, info=" (vector-ref res 2))
(debug:print 0 *default-log-port* " client call chain:")
(print-call-chain (current-error-port))
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;; 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 run-id)
;; if none running or if > 20 seconds since
;; server last used then start shutdown
;; This thread waits for the server to come alive
(debug:print-info 0 #f "Starting the sync-back, keep alive thread in server for run-id=" run-id)
(let* ((tdbdat (tasks:open-db))
(server-start-time (current-seconds))
(server-info (let loop ((start-time (current-seconds))
(changed #t)
(last-sdat "not this"))
(let ((sdat #f))
(thread-sleep! 0.01)
(debug:print-info 0 #f "Waiting for server alive signature")
(mutex-lock! *heartbeat-mutex*)
(set! sdat *server-info*)
(mutex-unlock! *heartbeat-mutex*)
(if (and sdat
(not changed)
(> (- (current-seconds) start-time) 2))
sdat
(begin
(debug:print-info 0 #f "Still waiting, last-sdat=" last-sdat)
(sleep 4)
(if (> (- (current-seconds) start-time) 120) ;; been waiting for two minutes
(begin
(debug:print 0 *default-log-port* "ERROR: transport appears to have died, exiting server " server-id " for run " run-id)
(tasks:server-delete-record (db:delay-if-busy tdbdat) server-id "failed to start, never received server alive signature")
(exit))
(loop start-time
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;; 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 run-id)
;; if none running or if > 20 seconds since
;; server last used then start shutdown
;; This thread waits for the server to come alive
(debug:print-info 0 *default-log-port* "Starting the sync-back, keep alive thread in server for run-id=" run-id)
(let* ((tdbdat (tasks:open-db))
(server-start-time (current-seconds))
(server-info (let loop ((start-time (current-seconds))
(changed #t)
(last-sdat "not this"))
(let ((sdat #f))
(thread-sleep! 0.01)
(debug:print-info 0 *default-log-port* "Waiting for server alive signature")
(mutex-lock! *heartbeat-mutex*)
(set! sdat *server-info*)
(mutex-unlock! *heartbeat-mutex*)
(if (and sdat
(not changed)
(> (- (current-seconds) start-time) 2))
sdat
(begin
(debug:print-info 0 *default-log-port* "Still waiting, last-sdat=" last-sdat)
(sleep 4)
(if (> (- (current-seconds) start-time) 120) ;; been waiting for two minutes
(begin
(debug:print 0 *default-log-port* "ERROR: transport appears to have died, exiting server " server-id " for run " run-id)
(tasks:server-delete-record (db:delay-if-busy tdbdat) server-id "failed to start, never received server alive signature")
(exit))
(loop start-time
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(mutex-lock! *heartbeat-mutex*)
(set! sdat *server-info*)
(mutex-unlock! *heartbeat-mutex*)
(if (or (not (equal? sdat (list iface port)))
(not server-id))
(begin
(debug:print-info 0 #f "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 *default-log-port* "last-access=" last-access ", server-timeout=" server-timeout)
;;
;; no_traffic, no running tests, if server 0, no running servers
;;
;; (let ((wait-on-running (configf:lookup *configdat* "server" b"wait-on-running"))) ;; wait on running tasks (if not true then exit on time out)
;;
(let* ((hrs-since-start (/ (- (current-seconds) server-start-time) 3600))
(adjusted-timeout (if (> hrs-since-start 1)
(- server-timeout (inexact->exact (round (* hrs-since-start 60)))) ;; subtract 60 seconds per hour
server-timeout)))
(if (common:low-noise-print 120 "server timeout")
(debug:print-info 0 #f "Adjusted server timeout: " adjusted-timeout))
(if (and *server-run*
(> (+ last-access server-timeout)
(current-seconds)))
(begin
(if (common:low-noise-print 120 "server continuing")
(debug:print-info 0 #f "Server continuing, seconds since last db access: " (- (current-seconds) last-access)))
;;
;; Consider implementing some smarts here to re-insert the record or kill self is
;; the db indicates so
;;
;; (if (tasks:server-am-i-the-server? tdb run-id)
;; (tasks:server-set-state! tdb server-id "running"))
;;
(loop 0 server-state bad-sync-count))
(http-transport:server-shutdown server-id port))))))
(define (http-transport:server-shutdown server-id port)
(let ((tdbdat (tasks:open-db)))
(debug:print-info 0 #f "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* *run-id* force-sync: #t))
;;
;; start_shutdown
;;
(tasks:server-set-state! (db:delay-if-busy tdbdat) server-id "shutting-down")
(portlogger:open-run-close portlogger:set-port port "released")
(thread-sleep! 5)
(debug:print-info 0 #f "Max cached queries was " *max-cache-size*)
(debug:print-info 0 #f "Number of cached writes " *number-of-writes*)
(debug:print-info 0 #f "Average cached write time "
(if (eq? *number-of-writes* 0)
"n/a (no writes)"
(/ *writes-total-delay*
*number-of-writes*))
" ms")
(debug:print-info 0 #f "Number non-cached queries " *number-non-write-queries*)
(debug:print-info 0 #f "Average non-cached time "
(if (eq? *number-non-write-queries* 0)
"n/a (no queries)"
(/ *total-non-write-delay*
*number-non-write-queries*))
" ms")
(debug:print-info 0 #f "Server shutdown complete. Exiting")
(tasks:server-delete-record (db:delay-if-busy tdbdat) server-id " http-transport:keep-running complete")
(exit)))
;; all routes though here end in exit ...
;;
;; start_server?
;;
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(mutex-lock! *heartbeat-mutex*)
(set! sdat *server-info*)
(mutex-unlock! *heartbeat-mutex*)
(if (or (not (equal? sdat (list iface port)))
(not server-id))
(begin
(debug:print-info 0 *default-log-port* "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 *default-log-port* "last-access=" last-access ", server-timeout=" server-timeout)
;;
;; no_traffic, no running tests, if server 0, no running servers
;;
;; (let ((wait-on-running (configf:lookup *configdat* "server" b"wait-on-running"))) ;; wait on running tasks (if not true then exit on time out)
;;
(let* ((hrs-since-start (/ (- (current-seconds) server-start-time) 3600))
(adjusted-timeout (if (> hrs-since-start 1)
(- server-timeout (inexact->exact (round (* hrs-since-start 60)))) ;; subtract 60 seconds per hour
server-timeout)))
(if (common:low-noise-print 120 "server timeout")
(debug:print-info 0 *default-log-port* "Adjusted server timeout: " adjusted-timeout))
(if (and *server-run*
(> (+ last-access server-timeout)
(current-seconds)))
(begin
(if (common:low-noise-print 120 "server continuing")
(debug:print-info 0 *default-log-port* "Server continuing, seconds since last db access: " (- (current-seconds) last-access)))
;;
;; Consider implementing some smarts here to re-insert the record or kill self is
;; the db indicates so
;;
;; (if (tasks:server-am-i-the-server? tdb run-id)
;; (tasks:server-set-state! tdb server-id "running"))
;;
(loop 0 server-state bad-sync-count))
(http-transport:server-shutdown server-id port))))))
(define (http-transport:server-shutdown server-id port)
(let ((tdbdat (tasks:open-db)))
(debug:print-info 0 *default-log-port* "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* *run-id* force-sync: #t))
;;
;; start_shutdown
;;
(tasks:server-set-state! (db:delay-if-busy tdbdat) server-id "shutting-down")
(portlogger:open-run-close portlogger:set-port port "released")
(thread-sleep! 5)
(debug:print-info 0 *default-log-port* "Max cached queries was " *max-cache-size*)
(debug:print-info 0 *default-log-port* "Number of cached writes " *number-of-writes*)
(debug:print-info 0 *default-log-port* "Average cached write time "
(if (eq? *number-of-writes* 0)
"n/a (no writes)"
(/ *writes-total-delay*
*number-of-writes*))
" ms")
(debug:print-info 0 *default-log-port* "Number non-cached queries " *number-non-write-queries*)
(debug:print-info 0 *default-log-port* "Average non-cached time "
(if (eq? *number-non-write-queries* 0)
"n/a (no queries)"
(/ *total-non-write-delay*
*number-non-write-queries*))
" ms")
(debug:print-info 0 *default-log-port* "Server shutdown complete. Exiting")
(tasks:server-delete-record (db:delay-if-busy tdbdat) server-id " http-transport:keep-running complete")
(exit)))
;; all routes though here end in exit ...
;;
;; start_server?
;;
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(if (> remtries 0)
(begin
(thread-sleep! 2)
(loop (tasks:server-lock-slot (db:delay-if-busy tdbdat) run-id)
(- remtries 1)))
(begin
;; since we didn't get the server lock we are going to clean up and bail out
(debug:print-info 2 #f "INFO: server pid=" (current-process-id) ", hostname=" (get-host-name) " not starting due to other candidates ahead in start queue")
(tasks:server-delete-records-for-this-pid (db:delay-if-busy tdbdat) " http-transport:launch")
))
(let* ((th2 (make-thread (lambda ()
(debug:print-info 0 #f "Server run thread started")
(http-transport:run
(if (args:get-arg "-server")
(args:get-arg "-server")
"-")
run-id
server-id)) "Server run"))
(th3 (make-thread (lambda ()
(debug:print-info 0 #f "Server monitor thread started")
(http-transport:keep-running server-id run-id))
"Keep running")))
(thread-start! th2)
(thread-sleep! 0.25) ;; give the server time to settle before starting the keep-running monitor.
(thread-start! th3)
(set! *didsomething* #t)
(thread-join! th2)
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(if (> remtries 0)
(begin
(thread-sleep! 2)
(loop (tasks:server-lock-slot (db:delay-if-busy tdbdat) run-id)
(- remtries 1)))
(begin
;; since we didn't get the server lock we are going to clean up and bail out
(debug:print-info 2 *default-log-port* "INFO: server pid=" (current-process-id) ", hostname=" (get-host-name) " not starting due to other candidates ahead in start queue")
(tasks:server-delete-records-for-this-pid (db:delay-if-busy tdbdat) " http-transport:launch")
))
(let* ((th2 (make-thread (lambda ()
(debug:print-info 0 *default-log-port* "Server run thread started")
(http-transport:run
(if (args:get-arg "-server")
(args:get-arg "-server")
"-")
run-id
server-id)) "Server run"))
(th3 (make-thread (lambda ()
(debug:print-info 0 *default-log-port* "Server monitor thread started")
(http-transport:keep-running server-id run-id))
"Keep running")))
(thread-start! th2)
(thread-sleep! 0.25) ;; give the server time to settle before starting the keep-running monitor.
(thread-start! th3)
(set! *didsomething* #t)
(thread-join! th2)
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