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(declare (uses common))
(declare (uses db))
(declare (uses tests))
(declare (uses tasks)) ;; tasks are where stuff is maintained about what is running.
(declare (uses server))
(declare (uses daemon))
(declare (uses portlogger))
(include "common_records.scm")
(include "db_records.scm")
(define (http-transport:make-server-url hostport)
(if (not hostport)
#f
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(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))
(start-port (portlogger:open-run-close portlogger:find-port))
(link-tree-path (configf:lookup *configdat* "setup" "linktree")))
(set! db *inmemdb*)
;; (set! db *inmemdb*)
(debug:print-info 0 "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)
;; http-transport:handle-directory) ;; simple-directory-handler)
;; Setup the web server and a /ctrl interface
;;
(vhost-map `(((* any) . ,(lambda (continue)
;; open the db on the first call
;; This is were we set up the database connections
(let* (($ (request-vars source: 'both))
(dat ($ 'dat))
(res #f))
(cond
((equal? (uri-path (request-uri (current-request)))
'(/ "api"))
(send-response body: (api:process-request db $) ;; the $ is the request vars proc
(send-response body: (api:process-request *inmemdb* $) ;; the $ is the request vars proc
headers: '((content-type text/plain)))
(mutex-lock! *heartbeat-mutex*)
(set! *last-db-access* (current-seconds))
(mutex-unlock! *heartbeat-mutex*))
((equal? (uri-path (request-uri (current-request)))
'(/ ""))
(send-response body: (http-transport:main-page)))
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headers: '((content-type text/plain))))
(else (continue))))))))
(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 "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 9000)
(begin
(debug:print 0 "WARNING: failed to start on portnum: " portnum ", trying next port")
(thread-sleep! 0.1)
(handle-exceptions
exn
(begin
(print-error-message exn)
(if (< portnum 64000)
(begin
(debug:print 0 "WARNING: attempt to start server failed. Trying again ...")
(debug:print 0 " message: " ((condition-property-accessor 'exn 'message) exn))
(debug:print 0 "exn=" (condition->list exn))
(portlogger:open-run-close portlogger:set-failed portnum)
(debug:print 0 "WARNING: failed to start on portnum: " portnum ", trying next port")
(thread-sleep! 0.1)
;; get_next_port goes here
;; get_next_port goes here
ipaddrstr (+ portnum 1) server-id))
(begin
(open-run-close tasks:server-force-clean-run-record tasks:open-db run-id ipaddrstr portnum " http-transport:try-start-server")
(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
ipaddrstr portnum)
(debug:print 1 "INFO: Trying to start server on " ipaddrstr ":" portnum)
;; This starts the spiffy server
;; NEED WAY TO SET IP TO #f TO BIND ALL
;; (start-server bind-address: ipaddrstr port: portnum)
(start-server port: portnum)
(open-run-close tasks:server-force-clean-run-record tasks:open-db run-id ipaddrstr portnum " http-transport:try-start-server")
(debug:print 1 "INFO: server has been stopped")))
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(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)
(list-ref serverdat 4) ;; (cadddr serverdat) ;; this is the uri for /api
(define (http-transport:client-api-send-receive run-id serverdat cmd params #!key (numretries 3))
(let* ((fullurl (if (vector? serverdat)
(http-transport:server-dat-get-api-req serverdat)
(begin
(debug:print 0 "FATAL ERROR: http-transport:client-api-send-receive called with no server info")
(exit 1))))
(res #f))
(handle-exceptions
exn
(if (> numretries 0)
(begin
(mutex-unlock! *http-mutex*)
(thread-sleep! 10)
(http-transport:client-api-send-receive run-id serverdat cmd params (- numretries 1)))
#f)
(begin
(res #f)
(success #t)
(sparams (db:obj->string params transport: 'http)))
;; (condition-case
;; handle-exceptions
;; exn
;; (if (> numretries 0)
;; (begin
;; (mutex-unlock! *http-mutex*)
;; (thread-sleep! 1)
;; (handle-exceptions
;; exn
;; (debug:print 0 "WARNING: closing connections failed. Server at " fullurl " almost certainly dead")
;; (close-all-connections!))
;; (debug:print 0 "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 "fullurl=" fullurl ", cmd=" cmd ", params=" params ", run-id=" run-id "\n")
;; set up the http-client here
(max-retry-attempts 5)
(max-retry-attempts 1)
;; consider all requests indempotent
(retry-request? (lambda (request)
#t))
#f))
;; 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*)
;; (condition-case (with-input-from-request "http://localhost"; #f read-lines)
;; ((exn http client-error) e (print e)))
(set! res (vector
success
(db:string->obj
(handle-exceptions
exn
(begin
(set! success #f)
(debug:print 0 "WARNING: failure in with-input-from-request to " fullurl ".")
(debug:print 0 " message: " ((condition-property-accessor 'exn 'message) exn))
(hash-table-delete! *runremote* run-id)
;; Killing associated server to allow clean retry.")
(tasks:kill-server-run-id run-id) ;; better to kill the server in the logic that called this routine?
;; (signal (make-composite-condition
;; (make-property-condition 'commfail 'message "failed to connect to server")))
"communications failed")
(set! res (with-input-from-request ;; was dat
fullurl
(list (cons 'key "thekey")
(cons 'cmd cmd)
(cons 'params params))
read-string))
(with-input-from-request ;; was dat
fullurl
(list (cons 'key "thekey")
(cons 'cmd cmd)
(cons 'params sparams))
read-string))
transport: 'http)))
;; 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)
(if (vector? res)
(if (vector-ref res 0)
res)))))
res
(begin ;; note: this code also called in nmsg-transport - consider consolidating it
(debug:print 0 "ERROR: error occured at server, info=" (vector-ref res 2))
(debug:print 0 " client call chain:")
(print-call-chain (current-error-port))
(debug:print 0 " server call chain:")
(pp (vector-ref res 1) (current-error-port))
(signal (vector-ref result 0))))
(signal (make-composite-condition
(make-property-condition
'timeout
'message "nmsg-transport:client-api-send-receive-raw timed out talking to server")))))))
;; careful closing of connections stored in *runremote*
;;
(define (http-transport:close-connections run-id)
(let* ((server-dat (hash-table-ref/default *runremote* run-id #f)))
(if (vector? server-dat)
(let ((api-dat (http-transport:server-dat-get-api-uri server-dat)))
(close-connection! api-dat)
#t)
#f)))
(define (make-http-transport:server-dat)(make-vector 6))
(define (http-transport:server-dat-get-iface vec) (vector-ref vec 0))
(define (http-transport:server-dat-get-port vec) (vector-ref vec 1))
(define (http-transport:server-dat-get-api-uri vec) (vector-ref vec 2))
(define (http-transport:server-dat-get-api-url vec) (vector-ref vec 3))
(define (http-transport:server-dat-get-api-req vec) (vector-ref vec 4))
(define (http-transport:server-dat-get-last-access vec) (vector-ref vec 5))
(define (http-transport:server-dat-get-socket vec) (vector-ref vec 6))
(define (http-transport:server-dat-make-url vec)
(if (and (http-transport:server-dat-get-iface vec)
(http-transport:server-dat-get-port vec))
(conc "http://"
(http-transport:server-dat-get-iface vec)
":"
(http-transport:server-dat-get-port vec))
#f))
(define (http-transport:server-dat-update-last-access vec)
(vector-set! vec 5 (current-seconds)))
;;
;; connect
;;
(define (http-transport:client-connect iface port)
(let* ((api-url (conc "http://" iface ":" port "/api"))
(uri-dat (make-request method: 'POST uri: (uri-reference (conc "http://" iface ":" port "/ctrl"))))
(let* ((api-url (conc "http://" iface ":" port "/api"))
(api-uri (uri-reference (conc "http://" iface ":" port "/api")))
;; (uri-dat (make-request method: 'GET uri: (uri-reference (conc "http://" iface ":" port "/ctrl"))))
(uri-api-dat (make-request method: 'POST uri: api-url)) ;; (uri-reference (conc "http://" iface ":" port "/api"))))
;; (uri-api-dat (make-request method: 'GET uri: (uri-reference (conc "http://" iface ":" port "/api"))))
(server-dat (list iface port uri-dat uri-api-dat api-url)))
;; (login-res (server:ping-server run-id server-dat))) ;; login-no-auto-client-setup server-dat run-id)))
;; (if (and (list? login-res)
;; (car login-res))
;; (begin
;; (hash-table-set! *runremote* run-id server-dat)
;; (debug:print-info 2 "Logged in and connected to " iface ":" port)
;; (hash-table-set! *runremote* run-id server-dat)
;; server-dat)
;; (begin
;; (debug:print-info 0 "ERROR: Failed to login or connect to " iface ":" port)
;; #f))))
(define (http-transport:keep-running server-id)
(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 "Starting the sync-back, keep alive thread in server for run-id=" run-id)
(let* ((tdbdat (tasks:open-db))
(let* ((server-info (let loop ((start-time (current-seconds))
(loop start-time
(equal? sdat last-sdat)
sdat))))))
(tdb (tasks:open-db))
(server-timeout (let ((tmo (configf:lookup *configdat* "server" "timeout")))
(if (and (string? tmo)
(string->number tmo))
(* 60 60 (string->number tmo))
;; (* 3 24 60 60) ;; default to three days
;; (* 60 1) ;; default to one minute
(* 60 60 25) ;; default to 25 hours
))))
(if *inmemdb* (db:sync-touched *inmemdb* force-sync: #t))
;; inmemdb is a dbstruct
(if *inmemdb* (db:sync-touched *inmemdb* *run-id* force-sync: #t))
(set! sync-time (- (current-milliseconds) start-time))
(set! rem-time (quotient (- 4000 sync-time) 1000))
(debug:print 0 "SYNC: time= " sync-time ", rem-time=" rem-time)
(debug:print 2 "SYNC: time= " sync-time ", rem-time=" rem-time)
;;
;; set_running after our first pass through
;; set_running after our first pass through and start the db
;;
(if (eq? server-state 'available)
(begin
(tasks:server-set-state! tdb server-id "running"))
(tasks:server-set-state! (db:delay-if-busy tdbdat) server-id "dbprep")
(thread-sleep! 5) ;; give some margin for queries to complete before switching from file based access to server based access
(set! *inmemdb* (db:setup run-id))
(tasks:server-set-state! (db:delay-if-busy tdbdat) server-id "running")))
(if (and (<= rem-time 4)
(> rem-time 0))
(thread-sleep! rem-time)
(thread-sleep! 4))) ;; fallback for if the math is changed ...
(if (< count 1) ;; 3x3 = 9 secs aprox
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;; 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
;; no_traffic, no running tests, if server 0, no running servers
;;
;; (let ((wait-on-running (configf:lookup *configdat* "server" "wait-on-running"))) ;; wait on running tasks (if not true then exit on time out)
;;
(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))
;;
;; 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))
(http-transport:server-shutdown server-id port)))))
(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)"
(/ *writes-total-delay*
*number-of-writes*))
" ms")
(debug:print-info 0 "Number non-cached queries " *number-non-write-queries*)
(debug:print-info 0 "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 "Server shutdown complete. Exiting")
(tasks:server-delete-record tdb server-id " http-transport:keep-running")
(exit))))))
(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 loop ((server-id (open-run-close tasks:server-lock-slot tasks:open-db run-id))
(remtries 4))
(if (not server-id)
(if (> remtries 0)
(begin
(thread-sleep! 2)
(loop (open-run-close tasks:server-lock-slot tasks:open-db 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 "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 " http-transport:launch")
))
(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")))
(set! *run-id* run-id)
(if (args:get-arg "-daemonize")
(begin
(daemon:ize)
(if *alt-log-file* ;; we should re-connect to this port, I think daemon:ize disrupts it
(begin
(current-error-port *alt-log-file*)
(current-output-port *alt-log-file*)))))
(if (server:check-if-running run-id)
(begin
(debug:print 0 "INFO: Server for run-id " run-id " already running")
(exit 0)))
(let loop ((server-id (tasks:server-lock-slot (db:delay-if-busy tdbdat) run-id))
(remtries 4))
(if (not server-id)
(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 "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 "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 "Server monitor thread started")
(http-transport:keep-running server-id run-id))
"Keep running")))
;; Database connection
(set! *inmemdb* (db:setup run-id))
(thread-start! th2)
(thread-start! th3)
(set! *didsomething* #t)
(thread-join! th2)
(exit)))))
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