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;;
;; all routes though here end in exit ...
;;
;; start_server
;;
(define (server:launch run-id transport-type)
;;(BB> "server:launch fired for run-id="run-id" transport-type="transport-type)
(let ((attempt-in-progress (server:start-attempted? *toppath*))) ; check for .server-starting
(when attempt-in-progress
(debug:print-info 0 *default-log-port* "Server start attempt in progress in other process (=> "attempt-in-progress"<=). Aborting server launch attempt in this process ("(current-process-id)")")
(exit)))
(let ((dotserver-url (server:check-if-running *toppath*))) ;; check for .server
(when dotserver-url
(debug:print-info 0 *default-log-port* "Server already running (=> "dotserver-url"<=). Aborting server launch attempt in this process ("(current-process-id)")")
(exit)
))
(else (debug:print-error 0 *default-log-port* "unknown server type " transport-type)))
;; is this a good place to print server exit stats?
(debug:print 0 "SERVER: max parallel api requests: " *max-api-process-requests*)
)
;; (else (debug:print-error 0 *default-log-port* "No known transport set, transport=" transport ", using rpc")
;; (rpc-transport:launch run-id)))))
;;======================================================================
;; S E R V E R U T I L I T I E S
;;======================================================================
;; Get the transport
(define (server:get-transport)
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;;
;; all routes though here end in exit ...
;;
;; start_server
;;
(define (server:launch run-id transport-type)
(case transport-type
((http)(http-transport:launch))
;;((nmsg)(nmsg-transport:launch run-id))
((rpc) (rpc-transport:launch run-id))
(else (debug:print-error 0 *default-log-port* "unknown server type " transport-type))))
;;======================================================================
;; S E R V E R U T I L I T I E S
;;======================================================================
;; Get the transport
(define (server:get-transport)
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(curr-ip (server:get-best-guess-address curr-host))
(curr-pid (current-process-id))
(homehost (common:get-homehost)) ;; configf:lookup *configdat* "server" "homehost" ))
(target-host (car homehost))
(testsuite (common:get-testsuite-name))
(logfile (conc areapath "/logs/server-" curr-pid "-" target-host ".log"))
(cmdln (conc (common:get-megatest-exe)
" -server " (or target-host "-") " -run-id " 0 (if (equal? (configf:lookup *configdat* "server" "daemonize") "yes")
(conc " -daemonize -log " logfile)
"")
" -m testsuite:" testsuite)) ;; (conc " >> " logfile " 2>&1 &")))))
(log-rotate (make-thread common:rotate-logs "server run, rotate logs thread")))
;; we want the remote server to start in *toppath* so push there
(push-directory areapath)
(cond
;; (attempt-in-progress
;; (debug:print 0 *default-log-port* "INFO: Not trying to start server because attempt is in progress: "attempt-in-progress))
;; (dot-server-url
;; (debug:print 0 *default-log-port* "INFO: Not trying to start server because one is already running : "dot-server-url))
(else
(debug:print 0 *default-log-port* "INFO: Trying to start server (" cmdln ") ...")
(thread-start! log-rotate)
;; host.domain.tld match host?
(if (and target-host
;; look at target host, is it host.domain.tld or ip address and does it
;; match current ip or hostname
(not (string-match (conc "("curr-host "|" curr-host"\\..*)") target-host))
(not (equal? curr-ip target-host)))
(begin
(debug:print-info 0 *default-log-port* "Starting server on " target-host ", logfile is " logfile)
(setenv "TARGETHOST" target-host)))
(setenv "TARGETHOST_LOGF" logfile)
(common:wait-for-normalized-load 4 " delaying server start due to load" remote-host: (get-environment-variable "TARGETHOST")) ;; do not try starting servers on an already overloaded machine, just wait forever
(system (conc "nbfake " cmdln))
(unsetenv "TARGETHOST_LOGF")
(if (get-environment-variable "TARGETHOST")(unsetenv "TARGETHOST"))
(thread-join! log-rotate)
(pop-directory)))))
(let ((rx (regexp "^SERVER STARTED: (\\S+):(\\d+) AT (\\d+)"))) ;; SERVER STARTED: host:port AT timesecs
(with-input-from-file
logf
(lambda ()
(let loop ((inl (read-line))
(lnum 0))
(if (not (eof-object? inl))
(let ((mlst (string-match rx inl)))
(if (not mlst)
(if (< lnum 500) ;; give up if more than 500 lines of server log read
(loop (read-line)(+ lnum 1))
(list #f #f #f))
(cdr mlst)))
(list #f #f #F)))))))
;; get a list of servers with all relevant data
;;
(define (server:get-list areapath)
(if (directory-exists? areapath)
(let ((server-logs (glob (conc areapath "/logs/server-*.log"))))
(if (null? server-logs)
'()
(let loop ((hed (car server-logs))
(tal (cdr server-logs))
(res '()))
(let* ((mod-time (file-modification-time hed))
(serv-rec (cons mod-time (server:logf-get-start-info hed)))
(new-res (cons res serv-rec)))
(if (null? tal)
new-res
(loop (car tal)(cdr tal) new-res))))))))
(define (server:get-client-signature) ;; BB> why is this proc named "get-"? it returns nothing -- set! has not return value.
(if *my-client-signature* *my-client-signature*
(let ((sig (server:mk-signature)))
(set! *my-client-signature* sig)
*my-client-signature*)))
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(curr-ip (server:get-best-guess-address curr-host))
(curr-pid (current-process-id))
(homehost (common:get-homehost)) ;; configf:lookup *configdat* "server" "homehost" ))
(target-host (car homehost))
(testsuite (common:get-testsuite-name))
(logfile (conc areapath "/logs/server-" curr-pid "-" target-host ".log"))
(cmdln (conc (common:get-megatest-exe)
" -server " (or target-host "-") (if (equal? (configf:lookup *configdat* "server" "daemonize") "yes")
" -daemonize "
"")
" -log " logfile
" -m testsuite:" testsuite)) ;; (conc " >> " logfile " 2>&1 &")))))
(log-rotate (make-thread common:rotate-logs "server run, rotate logs thread")))
;; we want the remote server to start in *toppath* so push there
(push-directory areapath)
(debug:print 0 *default-log-port* "INFO: Trying to start server (" cmdln ") ...")
(thread-start! log-rotate)
;; host.domain.tld match host?
(if (and target-host
;; look at target host, is it host.domain.tld or ip address and does it
;; match current ip or hostname
(not (string-match (conc "("curr-host "|" curr-host"\\..*)") target-host))
(not (equal? curr-ip target-host)))
(begin
(debug:print-info 0 *default-log-port* "Starting server on " target-host ", logfile is " logfile)
(setenv "TARGETHOST" target-host)))
(setenv "TARGETHOST_LOGF" "server.log") ;; logfile)
(common:wait-for-normalized-load 4 " delaying server start due to load" remote-host: (get-environment-variable "TARGETHOST")) ;; do not try starting servers on an already overloaded machine, just wait forever
(system (conc "nbfake " cmdln))
(unsetenv "TARGETHOST_LOGF")
(if (get-environment-variable "TARGETHOST")(unsetenv "TARGETHOST"))
(thread-join! log-rotate)
(pop-directory)))
;; given a path to a server log return: host port startseconds
;;
(define (server:logf-get-start-info logf)
(let ((rx (regexp "^SERVER STARTED: (\\S+):(\\d+) AT ([\\d\\.]+)"))) ;; SERVER STARTED: host:port AT timesecs
(with-input-from-file
logf
(lambda ()
(let loop ((inl (read-line))
(lnum 0))
(if (not (eof-object? inl))
(let ((mlst (string-match rx inl)))
(if (not mlst)
(if (< lnum 500) ;; give up if more than 500 lines of server log read
(loop (read-line)(+ lnum 1))
(list #f #f #f))
(let ((dat (cdr mlst)))
(list (car dat) ;; host
(string->number (cadr dat)) ;; port
(string->number (caddr dat))))))
(list #f #f #f)))))))
;; get a list of servers with all relevant data
;; ( mod-time host port start-time )
;;
(define (server:get-list areapath)
(if (directory-exists? areapath)
(let ((server-logs (glob (conc areapath "/logs/server-*.log"))))
(if (null? server-logs)
'()
(let loop ((hed (car server-logs))
(tal (cdr server-logs))
(res '()))
(let* ((mod-time (file-modification-time hed))
(serv-dat (server:logf-get-start-info hed))
(serv-rec (cons mod-time serv-dat))
(new-res (cons serv-rec res)))
(if (null? tal)
new-res
(loop (car tal)(cdr tal) new-res))))))))
;; given a list of servers get a list of valid servers, i.e. at least
;; 10 seconds old, has started and is less than 1 hour old and is
;; active (i.e. mod-time < 10 seconds
;;
;; mod-time host port start-time
;;
;; sort by start-time descending. I.e. get the oldest first. Young servers will thus drop off
;; and servers should stick around for about two hours or so.
;;
(define (server:get-best srvlst)
(let ((now (current-seconds)))
(sort
(filter (lambda (rec)
(let ((start-time (list-ref rec 3))
(mod-time (list-ref rec 0)))
(print "start-time: " start-time " mod-time: " mod-time)
(and start-time mod-time
(> (- now start-time) 1) ;; been running at least 1 seconds
(< (- now mod-time) 10) ;; still alive - file touched in last 10 seconds
(< (- now start-time) 3600) ;; under one hour running time
)))
srvlst)
(lambda (a b)
(< (list-ref a 3)
(list-ref b 3))))))
(define (server:get-client-signature) ;; BB> why is this proc named "get-"? it returns nothing -- set! has not return value.
(if *my-client-signature* *my-client-signature*
(let ((sig (server:mk-signature)))
(set! *my-client-signature* sig)
*my-client-signature*)))
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