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(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) 16) ;; still alive - file touched in last 16 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-first-best areapath)
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(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) 0) ;; been running at least 0 seconds
(< (- now mod-time) 16) ;; still alive - file touched in last 16 seconds
(< (- now start-time) (string->number (or (configf:lookup *configdat* "server" "runtime") "3600"))) ;; under one hour running time
)))
srvlst)
(lambda (a b)
(< (list-ref a 3)
(list-ref b 3))))))
(define (server:get-first-best areapath)
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(let ((sig (server:mk-signature)))
(set! *my-client-signature* sig)
*my-client-signature*)))
;; kind start up of servers, wait 40 seconds before allowing another server for a given
;; run-id to be launched
(define (server:kind-run areapath)
(let ((last-run-time (hash-table-ref/default *server-kind-run* areapath #f)))
(if (or (not last-run-time)
(> (- (current-seconds) last-run-time) 30))
(begin
(server:run areapath)
(hash-table-set! *server-kind-run* areapath (current-seconds))))))
(let ((num-ok (server:get-best (server:get-list areapath))))
(if (< num-ok 2) ;; if there are no decent candidates for servers then try starting a new one
(server:kind-run areapath))
(thread-sleep! 5)
(loop (server:check-if-running areapath)))))))
(define server:try-running server:run) ;; there is no more per-run servers ;; REMOVE ME. BUG.
(define (server:dotserver-age-seconds areapath)
(let ((server-file (conc areapath "/.server")))
(begin
(handle-exceptions
exn
#f
(- (current-seconds)
(file-modification-time server-file))))))
;; no longer care if multiple servers are started by accident. older servers will drop off in time.
;;
(define (server:check-if-running areapath)
(let* ((servers (server:get-best (server:get-list areapath)))
(best-server (if (null? servers) #f (car servers)))
(dotserver-url (if best-server
(server:record->url best-server)
#f))) ;; (server:read-dotserver->url areapath))) ;; tdbdat (tasks:open-db)))
(if dotserver-url
(let* ((res (case *transport-type*
((http)(server:ping dotserver-url))
;; ((nmsg)(nmsg-transport:ping (tasks:hostinfo-get-interface server)
)))
(if res
dotserver-url
(begin
;; (server:kill best-server)
#f)))
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(let ((sig (server:mk-signature)))
(set! *my-client-signature* sig)
*my-client-signature*)))
;; kind start up of servers, wait 40 seconds before allowing another server for a given
;; run-id to be launched
(define (server:kind-run areapath)
(let* ((last-run-dat (hash-table-ref/default *server-kind-run* areapath '(0 0))) ;; callnum, whenrun
(call-num (car last-run-dat))
(when-run (cadr last-run-dat))
(run-delay (+ (case call-num
((0) 0)
((1) 20)
((2) 300)
(else 600))
(random 5)))) ;; add a small random number just in case a lot of jobs hit the work hosts simultaneously
(if (> (- (current-seconds) when-run) run-delay)
(server:run areapath))
(hash-table-set! *server-kind-run* areapath (list (+ call-num 1)(current-seconds)))))
(define (server:start-and-wait areapath #!key (timeout 60))
(let ((give-up-time (+ (current-seconds) timeout)))
(let loop ((server-url (server:check-if-running areapath)))
(if (or server-url
(> (current-seconds) give-up-time))
server-url
(let ((num-ok (length (server:get-best (server:get-list areapath)))))
(if (< num-ok 2) ;; if there are no decent candidates for servers then try starting a new one
(server:kind-run areapath))
(thread-sleep! 5)
(loop (server:check-if-running areapath)))))))
(define server:try-running server:run) ;; there is no more per-run servers ;; REMOVE ME. BUG.
(define (server:dotserver-age-seconds areapath)
(let ((server-file (conc areapath "/.server")))
(begin
(handle-exceptions
exn
#f
(- (current-seconds)
(file-modification-time server-file))))))
;; no longer care if multiple servers are started by accident. older servers will drop off in time.
;;
(define (server:check-if-running areapath)
(let* ((servers (server:get-best (server:get-list areapath))))
(if (null? servers)
#f
(let loop ((hed (car servers))
(tal (cdr servers)))
(let ((res (server:check-server hed)))
(if res
res
(if (null? tal)
#f
(loop (car tal)(cdr tal)))))))))
;; ping the given server
;;
(define (server:check-server server-record)
(let* ((server-url (server:record->url server-record))
(res (case *transport-type*
((http)(server:ping server-url))
;; ((nmsg)(nmsg-transport:ping (tasks:hostinfo-get-interface server)
)))
(if res
server-url
#f)))
(define (server:kill servr)
(match-let (((mod-time hostname port start-time pid)
servr))
(tasks:kill-server hostname pid)))
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