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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with Megatest. If not, see <http://www.gnu.org/licenses/>.
;;
(require-extension (srfi 18) extras tcp s11n)
(use srfi-1 posix regex regex-case srfi-69 hostinfo md5 message-digest
directory-utils posix-extras matchable)
(use spiffy uri-common intarweb http-client spiffy-request-vars)
(declare (unit server))
(declare (uses common))
(declare (uses db))
(declare (uses tasks)) ;; tasks are where stuff is maintained about what is running.
;; (declare (uses synchash))
(declare (uses http-transport))
;;(declare (uses rpc-transport))
(declare (uses launch))
;; (declare (uses daemon))
(include "common_records.scm")
(include "db_records.scm")
;; (require-extension (srfi 18) extras tcp s11n)
;;
;; (use srfi-1 posix regex regex-case srfi-69 hostinfo md5 message-digest
;; directory-utils posix-extras matchable)
;;
;; (use spiffy uri-common intarweb http-client spiffy-request-vars)
;;
;; (declare (unit server))
;;
;; (declare (uses common))
;; (declare (uses db))
;; (declare (uses tasks)) ;; tasks are where stuff is maintained about what is running.
;; ;; (declare (uses synchash))
;; (declare (uses http-transport))
;; ;;(declare (uses rpc-transport))
;; (declare (uses launch))
;; ;; (declare (uses daemon))
;;
;; (include "common_records.scm")
;; (include "db_records.scm")
(define (server:make-server-url hostport)
(if (not hostport)
#f
(conc "http://" (car hostport) ":" (cadr hostport))))
(define *server-loop-heart-beat* (current-seconds))
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(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)
(thread-sleep! (/ (random 5000) 1000)) ;; add about a random (up to 5 seconds) initial delay. It seems pretty common that many running tests request a server at the same time
(thread-sleep! (/ (pseudo-random-integer 5000) 1000)) ;; add about a random (up to 5 seconds) initial delay. It seems pretty common that many running tests request a server at the same time
;; (common:wait-for-normalized-load load-limit " delaying server start due to load" target-host) ;; do not try starting servers on an already overloaded machine, just wait forever
#;(common:wait-for-homehost-load load-limit (conc " delaying server start due to load on homehost. limit is " load-limit))
(system (conc "nbfake " cmdln))
(unsetenv "TARGETHOST_LOGF")
(if (get-environment-variable "TARGETHOST")(unsetenv "TARGETHOST"))
(thread-join! log-rotate)
(pop-directory)))
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(if dbprep-found
(begin
(debug:print-info 0 *default-log-port* "Server is in dbprep at " (current-seconds))
(thread-sleep! 25)
)
(debug:print-info 0 *default-log-port* "Unable to get server info from " logf " at " (current-seconds))
)
(list #f #f #f #f)))))))))
(list #f #f #f #f)))))))))
;; get a list of servers with all relevant data
;; ( mod-time host port start-time pid )
;;
(define (server:get-list areapath #!key (limit #f))
(let ((fname-rx (regexp "^(|.*/)server-(\\d+)-(\\S+).log$"))
(day-seconds (* 24 60 60)))
;; if the directory exists continue to get the list
;; otherwise attempt to create the logs dir and then
;; continue
(if (if (directory-exists? (conc areapath "/logs"))
'()
(if (file-write-access? areapath)
(if (file-writable? areapath)
(begin
(condition-case
(create-directory (conc areapath "/logs") #t)
(exn (i/o file)(debug:print 0 *default-log-port* "ERROR: Cannot create directory at " (conc areapath "/logs")))
(exn ()(debug:print 0 *default-log-port* "ERROR: Unknown error attemtping to get server list. exn=" exn)))
(directory-exists? (conc areapath "/logs")))
'()))
;; Get the list of server logs that do not contain "exiting". Ignore logs for servers that have exited.
(let* ((server-logs-cmd (conc "grep -iL exiting " areapath "/logs/server-*-*.log"))
(let* ((server-logs (server:get-logs-list areapath))
(server-logs (string-split (string-chomp (call-with-input-pipe server-logs-cmd read-all))))
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(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
(or (not (configf:lookup *configdat* "server" "runtime")) ;; skip if not set
(< (- now start-time)
(+ (- (string->number (configf:lookup *configdat* "server" "runtime"))
180)
(random 360)))) ;; under one hour running time +/- 180
(pseudo-random-integer 360)))) ;; under one hour running time +/- 180
))
#f))
srvlst)
(lambda (a b)
(< (list-ref a 3)
(list-ref b 3))))))
(if (> (length slst) nums)
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#f)))
(define (server:get-rand-best areapath)
(let ((srvrs (server:get-best (server:get-list areapath))))
(if (and (list? srvrs)
(not (null? srvrs)))
(let* ((len (length srvrs))
(idx (random len)))
(idx (pseudo-random-integer len)))
(list-ref srvrs idx))
#f)))
(define (server:record->id servr)
(handle-exceptions
exn
(begin
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(all-go (> delta reftime)))
(if (and all-go
(begin
(debug:print-info 0 *default-log-port* "Writing " start-flag)
(with-output-to-file start-flag
(lambda ()
(print server-key)))
(thread-sleep! 0.25)
(thread-sleep! 0.254)
(let ((res (with-input-from-file start-flag
(lambda ()
(read-line)))))
(equal? server-key res))))
#t ;; (system (conc "touch " start-flag)) ;; lazy but safe
(begin
(debug:print-info 0 *default-log-port* "Gating server start, last start: "
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(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
(pseudo-random-integer 5))) ;; add a small random number just in case a lot of jobs hit the work hosts simultaneously
(lock-file (conc areapath "/logs/server-start.lock")))
(if (> (- (current-seconds) when-run) run-delay)
(let* ((start-flag (conc areapath "/logs/server-start-last")))
(common:simple-file-lock-and-wait lock-file expire-time: 15)
(debug:print-info 0 *default-log-port* "server:kind-run: touching " start-flag)
(system (conc "touch " start-flag)) ;; lazy but safe
(server:run areapath)
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(define (server:check-if-running areapath) ;; #!key (numservers "2"))
(let* ((ns (server:get-num-servers))
(servers (server:get-best (server:get-list areapath))))
(if (or (and servers
(null? servers))
(not servers)
(and (list? servers)
(< (length servers) (random ns)))) ;; somewhere between 0 and numservers
(< (length servers) (pseudo-random-integer ns)))) ;; somewhere between 0 and numservers
#f
(let loop ((hed (car servers))
(tal (cdr servers)))
(let ((res (server:check-server hed)))
(if res
hed
(if (null? tal)
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(duty-cycle (configf:lookup-number *configdat* "server" "sync-duty-cycle" default: default-duty-cycle))
(last-sync-seconds 10) ;; we will adjust this to a measurement and delay last-sync-seconds * (1 - duty-cycle)
(calculate-off-time (lambda (work-duration duty-cycle)
(* (/ (- 1 duty-cycle) duty-cycle) last-sync-seconds)))
(off-time min-intersync-delay) ;; adjusted in closure below.
(do-a-sync
(lambda ()
(BB> "Start do-a-sync with fork-to-background="fork-to-background" persist-until-sync="persist-until-sync)
;; (BB> "Start do-a-sync with fork-to-background="fork-to-background" persist-until-sync="persist-until-sync)
(let* ((finalres
(let retry-loop ((num-tries 0))
(if (common:simple-file-lock lockfile)
(begin
(cond
((not (or fork-to-background persist-until-sync))
(debug:print 0 *default-log-port* "INFO: syncer thread sleeping for max of (server.minimum-intersync-delay="min-intersync-delay
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(else
(system (conc "/bin/cp "sync-log" "sync-log".fail"))
(debug:print 0 *default-log-port* "ERROR: ["(common:human-time)"] Sync failed. See log at "sync-log".fail")
(if (file-exists? (conc mtdbfile ".backup"))
(system (conc "/bin/cp "mtdbfile ".backup " mtdbfile)))
#f))))
(common:simple-file-release-lock lockfile)
(BB> "released lockfile: " lockfile)
(when (common:file-exists? lockfile)
(BB> "DID NOT ACTUALLY RELEASE LOCKFILE"))
;; (BB> "released lockfile: " lockfile)
;; (when (common:file-exists? lockfile)
;; (BB> "DID NOT ACTUALLY RELEASE LOCKFILE"))
res2) ;; end let
);; end begin
;; else
(cond
(persist-until-sync
(thread-sleep! 1)
(debug:print 1 *default-log-port* "INFO: ["(common:human-time)"] pid="(current-process-id)" other SYNC in progress; we're in a fork-to-background so we need to succeed. Let's wait a jiffy and and try again. num-tries="num-tries" (waiting for lockfile="lockfile" to disappear)")
(retry-loop (add1 num-tries)))
(else
(thread-sleep! (max off-time (+ last-sync-seconds min-intersync-delay)))
(debug:print 1 *default-log-port* "INFO: ["(common:human-time)"] pid="(current-process-id)" other SYNC in progress; not syncing.")
'parallel-sync-in-progress))
) ;; end if got lockfile
)
))
(BB> "End do-a-sync with fork-to-background="fork-to-background" persist-until-sync="persist-until-sync" and result="finalres)
;; (BB> "End do-a-sync with fork-to-background="fork-to-background" persist-until-sync="persist-until-sync" and result="finalres)
finalres)
) ;; end lambda
))
do-a-sync))
(define (server:writable-watchdog-bruteforce dbstruct)
(thread-sleep! 1) ;; delay for startup
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(final-sync)
(if (common:low-noise-print 30)
(debug:print-info 0 *default-log-port* "Exiting watchdog timer, *time-to-exit* = " *time-to-exit*" pid="(current-process-id)
)))))
(define (server:writable-watchdog-deltasync dbstruct)
(thread-sleep! 0.05) ;; delay for startup
(thread-sleep! 0.054) ;; delay for startup
(let ((legacy-sync (common:run-sync?))
(sync-stale-seconds (configf:lookup-number *configdat* "server" "sync-stale-seconds" default: 300))
(debug-mode (debug:debug-mode 1))
(last-time (current-seconds))
(no-sync-db (db:open-no-sync-db))
(stmt-cache (dbr:dbstruct-stmt-cache dbstruct))
(sync-duration 0) ;; run time of the sync in milliseconds
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