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pktsdir
mtrah
(mutex (make-mutex))
)
;; make it a global? Well, it is local to area module
(define *area-conndat* (make-area))
(define *pktspec*
`((server (hostname . h)
(port . p)
(pid . i)
)
(data (hostname . h) ;; sender hostname
(port . p) ;; sender port
(ip . i) ;; sender ip
(hostkey . k) ;; sending host key - store info at server under this key
(servkey . s) ;; server key - this needs to match at server end or reject the msg
(format . f) ;; sb=serialized-base64, t=text, sx=sexpr, j=json
(data . d) ;; base64 encoded slln data
)))
(define (server:get-mtrah)
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pktsdir
mtrah
(mutex (make-mutex))
)
;; make it a global? Well, it is local to area module
(define *area-info* (make-area))
(define *pktspec*
`((server (hostname . h)
(port . p)
(pid . i)
)
(data (hostname . h) ;; sender hostname
(port . p) ;; sender port
(ip . a) ;; sender ip
(hostkey . k) ;; sending host key - store info at server under this key
(servkey . s) ;; server key - this needs to match at server end or reject the msg
(format . f) ;; sb=serialized-base64, t=text, sx=sexpr, j=json
(data . d) ;; base64 encoded slln data
)))
(define (server:get-mtrah)
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;; look for other servers
;; contact other servers and compile list of servers
;; there are two types of server
;; main servers - dashboards, runners and dedicated servers - need pkt
;; passive servers - test executers, step calls, list-runs - no pkt
;;
(define (server:start-nmsg #!optional (force-server-type #f))
(mutex-lock! (area-mutex *area-conndat*))
(let* ((server-type (or force-server-type
(if (args:any? "-run" "-server")
'main
'passive)))
(port-num (portlogger:open-run-close portlogger:find-port))
(area-conn (nmsg:start-server port-num))
;; (pktspec (area-pktspec *area-conndat*))
(mtdir (or (server:get-mtrah)
(begin
(print "ERROR: megatest.config not found and MT_RUN_AREA_HOME is not set.")
#f)))
(pktdir (conc mtdir
"/.server-pkts")))
(if (not mtdir)
#f
(begin
(if (not (directory? pktdir))(create-directory pktdir))
;; server is started, now create pkt if needed
(if (eq? server-type 'main)
(begin
(area-pktid-set! *area-conndat*
(write-alist->pkt
pktdir
`((hostname . ,(get-host-name))
(port . ,port-num)
(pid . ,(current-process-id)))
pktspec: *pktspec*
ptype: 'server))
(area-pktfile-set! *area-conndat* (conc pktdir "/" (area-pktid *area-conndat*) ".pkt"))))
;; set all the area info in the
(area-pktsdir-set! *area-conndat* pktdir)
(area-mtrah-set! *area-conndat* mtdir)
(area-conn-set! *area-conndat* area-conn)
(area-port-set! *area-conndat* port-num)
(mutex-unlock! (area-mutex *area-conndat*))
#t))))
;; Call this to start the actual server
;;
;; start_server
;;
;; mode: '
;; handler: proc which takes pktrecieved as argument
;;
(define (server:launch mode handler)
(let* ((start-time (current-seconds))
(rep (server:start-nmsg mode))
(last-msg (current-seconds))
(th1 (make-thread
(lambda ()
(let loop ()
(let ((pktdat (nn-recv rep)))
(set! last-msg (current-seconds))
(if (not (eof-object? pktdat))
(begin
(proc pktdat)
(loop))))))
"message handler"))
(th2 (make-thread
(lambda ()
(let loop ()
(thread-sleep! 10)
(if (> (- (current-seconds) last-msg) 60) ;; timeout after 60 seconds
(begin
(print "Waited for 60 seconds and no messages, exiting now.")
(exit))
(loop)))))))
(thread-start! th1)
(thread-start! th2)
(thread-join th1)))
(define (server:shutdown)
(let ((conn (area-conn *area-conndat*))
(pktf (area-pktfile *area-conndat*))
(port (area-port *area-conndat*)))
(if conn
(begin
(if pktf (delete-file* pktf))
(server:send-all "imshuttingdown")
(nmsg:close conn)
(portlogger:open-run-close portlogger:release-port port)))))
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;; look for other servers
;; contact other servers and compile list of servers
;; there are two types of server
;; main servers - dashboards, runners and dedicated servers - need pkt
;; passive servers - test executers, step calls, list-runs - no pkt
;;
(define (server:start-nmsg #!optional (force-server-type #f))
(mutex-lock! (area-mutex *area-info*))
(let* ((server-type (or force-server-type
(if (args:any? "-run" "-server")
'main
'passive)))
(port-num (portlogger:open-run-close portlogger:find-port))
(best-ip (server:get-my-best-address))
(area-conn (nmsg:start-server port-num))
;; (pktspec (area-pktspec *area-info*))
(mtdir (or (server:get-mtrah)
(begin
(print "ERROR: megatest.config not found and MT_RUN_AREA_HOME is not set.")
#f)))
(pktdir (conc mtdir
"/.server-pkts")))
(if (not mtdir)
#f
(begin
(if (not (directory? pktdir))(create-directory pktdir))
;; server is started, now create pkt if needed
(print "Starting server in " server-type " mode")
(if (eq? server-type 'main)
(begin
(area-pktid-set! *area-info*
(write-alist->pkt
pktdir
`((hostname . ,(get-host-name))
(ip . ,best-ip)
(port . ,port-num)
(pid . ,(current-process-id)))
pktspec: *pktspec*
ptype: 'server))
(area-pktfile-set! *area-info* (conc pktdir "/" (area-pktid *area-info*) ".pkt"))))
;; set all the area info in the
(area-pktsdir-set! *area-info* pktdir)
(area-mtrah-set! *area-info* mtdir)
(area-conn-set! *area-info* area-conn)
(area-port-set! *area-info* port-num)
(mutex-unlock! (area-mutex *area-info*))
area-conn))))
;; Call this to start the actual server
;;
;; start_server
;;
;; mode: '
;; handler: proc which takes pktrecieved as argument
;;
(define (server:launch mode proc)
(let* ((start-time (current-seconds))
(rep (server:start-nmsg mode))
(last-msg (current-seconds))
(th1 (make-thread
(lambda ()
(let loop ()
(let ((pktdat (nmsg:recv rep)))
(set! last-msg (current-seconds))
(print "received: " pktdat)
(if (not (eof-object? pktdat))
(begin
(proc pktdat)
(loop))))))
"message handler"))
(th2 (make-thread
(lambda ()
(let loop ()
(thread-sleep! 10)
(if (> (- (current-seconds) last-msg) 60) ;; timeout after 60 seconds
(begin
(print "Waited for 60 seconds and no messages, exiting now.")
(exit))
(loop)))))))
(thread-start! th1)
(thread-start! th2)
(thread-join! th1)))
(define (server:shutdown)
(let ((conn (area-conn *area-info*))
(pktf (area-pktfile *area-info*))
(port (area-port *area-info*)))
(if conn
(begin
(if pktf (delete-file* pktf))
(server:send-all "imshuttingdown")
(nmsg:close conn)
(portlogger:open-run-close portlogger:release-port port)))))
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(D . "1549427032.0"))
;; srvpkt is the info for the server we wish to send the message to
;;
(define (server:send servpkt data dtype)
(let* ((port (alist-ref 'port servpkt))
(host (alist-ref 'hostname servpkt))
(hkey (alist-ref 'Z servpkt))
(addr (conc host ":" port))
(myport (area-port *area-conndat*))
(myhost (area-myaddr *area-conndat*))
(mykey (area-pktid *area-conndat*))
(msg (alist->pkt `((hostname . ,myhost)
(port . ,myport)
(servkey . ,hkey) ;; server looks at this to ensure message is for them
(hostkey . ,mykey)
(format . ,dtype) ;; formating of the message
(data . ,data))
*pktspec*)))
(if (and port host)
(nmsg:open-send-receive addr msg)
#f)))
;; is the server alive?
;;
(define (server:ping servpkt)
(let* ((start-time (current-milliseconds))
(res (server:send servpkt "ping" "t")))
(cons (- (current-milliseconds)
(equal? res "got ping")))))
;; look up all pkts and get the server id (the hash), port, host/ip
;; store this info in the global struct *area-conndat*
;;
(define (server:get-all)
;; readll all pkts
;; foreach pkt; if it isn't me ping the server; if alive, add to hosts hash, else rm the pkt
(let ((all-pkts (server:get-all-server-pkts *area-conn*)))
(for-each
(lambda (servpkt)
(server:ping servpkt))
all-pkts)))
;; send out an "I'm about to exit notice to all known servers"
;;
(define (server:imminent-death)
'())
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(D . "1549427032.0"))
;; srvpkt is the info for the server we wish to send the message to
;;
(define (server:send servpkt data dtype)
(let* ((port (alist-ref 'port servpkt))
(host (alist-ref 'hostname servpkt))
(ip (alist-ref 'ip servpkt))
(hkey (alist-ref 'Z servpkt))
(addr (conc (or ip host) ":" port)) ;; fall back to host if ip not provided
(myport (area-port *area-info*))
(myhost (area-myaddr *area-info*))
(mykey (area-pktid *area-info*))
(msg (alist->pkt `((hostname . ,myhost)
(port . ,myport)
(servkey . ,hkey) ;; server looks at this to ensure message is for them
(hostkey . ,mykey)
(format . ,dtype) ;; formating of the message
(data . ,data))
*pktspec*)))
(if (and port host)
(begin
(print "sending " msg " to " addr)
(nmsg:open-send-receive addr msg))
#f)))
;; is the server alive?
;;
(define (server:ping servpkt)
(let* ((start-time (current-milliseconds))
(res (server:send servpkt "ping" "t")))
(cons (- (current-milliseconds) start-time)
(equal? res "got ping"))))
;; look up all pkts and get the server id (the hash), port, host/ip
;; store this info in the global struct *area-info*
;;
(define (server:get-all)
;; readll all pkts
;; foreach pkt; if it isn't me ping the server; if alive, add to hosts hash, else rm the pkt
(let ((all-pkts (server:get-all-server-pkts *area-info*)))
(for-each
(lambda (servpkt)
(let* ((res (server:ping servpkt)))
(print "Got " res " from server " servpkt)))
all-pkts)))
;; send out an "I'm about to exit notice to all known servers"
;;
(define (server:imminent-death)
'())
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