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Comment:Check for sync in progress before even launching megatest -db2db
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SHA1: 4579b102a3de00b92a59488d0b3b53ee850b9713
User & Date: matt on 2023-05-21 20:44:08
Other Links: branch diff | manifest | tags
Context
2023-05-22
05:04
Removed attempt to exit server on handler failure. It did not seem to be working. check-in: 47cfd09de7 user: matt tags: v1.80
2023-05-21
20:44
Check for sync in progress before even launching megatest -db2db check-in: 4579b102a3 user: matt tags: v1.80
07:44
Added timed ping but not used yet for throttling. check-in: 99d5a8b353 user: matt tags: v1.80
Changes
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Modified dbmod.scm from [a718e7bdcb] to [6d9a7a8b67].

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    (dbr:dbstruct-dbtmpname-set! dbstruct tmpdb)
    (dbr:dbstruct-dbfname-set!   dbstruct dbfname)
    (dbr:dbstruct-sync-proc-set! dbstruct
				 (lambda (last-update)
				   (if *sync-in-progress*
				       (debug:print 3 *default-log-port* "WARNING: overlapping calls to sync to disk")
				       (let* ((sync-cmd (conc "megatest -db2db -from "tmpdb" -to "dbfullname"&"))
					      (synclock-file (conc dbfullname".sync-lock")))
					      (synclock-file     (conc dbfullname".sync-lock"))
					 ;; (mutex-lock! *db-with-db-mutex*) ;; this mutex is used when overloaded or during a query that modifies the db
					 ;; (if (eq? (dbfile:cache-method) 'cachedb)
					      (synclock-mod-time (if (file-exists? synclock-file)
					 ;;     (dbmod:sync-gasket tables last-update cachedb db
					 ;; 			dbfullname syncdir keys)
					 (if (< (file-modification-time tmpdb)
						(file-modification-time dbfullname))
					     (debug:print 0 *default-log-port* "Skipping sync, "tmpdb" older than "dbfullname)
								     (handle-exceptions
									 exn
								       #f
								       (file-modification-time synclock-file))
								     #f))
					      (thethread         (lambda ()
					     (if (file-exists? synclock-file)
						 (debug:print 0 *default-log-port* "Skipping sync, lockfile "synclock-file" found.")
						 (thread-start! (make-thread
								 (lambda ()
								   (set! *sync-in-progress* #t)
								   (debug:print-info "Running "sync-cmd)
								   (system sync-cmd)
								   (thread-start!
								    (make-thread
								     (lambda ()
								       (set! *sync-in-progress* #t)
								       (debug:print-info "Running "sync-cmd)
								       (system sync-cmd)
								   ;; (mutex-unlock! *db-with-db-mutex*)
								   ;; (thread-sleep! 0.5) ;; ensure at least 1/2 second down time between sync calls
								   (set! *sync-in-progress* #f))))))
					 ))))
								       (set! *sync-in-progress* #f)))))))
					 (if (< (file-modification-time tmpdb)
						(file-modification-time dbfullname))
					     (debug:print 0 *default-log-port* "Skipping sync, "tmpdb" older than "dbfullname)
					     (if synclock-mod-time
						 (if (< (- (current-seconds) synclock-mod-time) 20) ;; something wrong with sync, remove file
						     (begin
						       (handle-exceptions
							   exn
							 #f
							 (delete-file synclock-file))
						       (thethread))
						     (debug:print 0 *default-log-port* "Skipping sync, lockfile "synclock-file" found."))
						 (thethread)))))))
    ;; (dbmod:sync-tables tables #f db cachedb)
    ;; (if db
    (dbmod:sync-gasket tables #f cachedb db dbfullname 'fromdest keys) ;; ) ;; load into cachedb
    (dbr:dbstruct-last-update-set! dbstruct (current-seconds)) ;; should this be offset back in time by one second?
    dbstruct))

;;    (if (eq? syncdir 'todisk) ;; sync to disk normally, sync from in dashboard
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Modified tcp-transportmod.scm from [e72475ef7d] to [02829c3b33].

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			   server-id: server-id
			   server-start: start-time
			   pid: pid)))
	       ;; verify we can talk to this server
	       (let* ((result   (tt:timed-ping host port server-id))
		      (ping-res (car result))
		      (ping     (cdr result)))
                 (debug:print-info 0 *default-log-port* "ping time:" ping)
                 (debug:print-info 0 *default-log-port* "ping time: " ping)
		 (case ping-res
		   ((running)
		    (hash-table-set! (tt-conns ttdat) dbfname conn) ;;; is this ok to save before validating that the connection is good?
		    conn)
		   ((starting)
		    (thread-sleep! 0.5)
		    (tt:client-connect-to-server ttdat dbfname run-id testsuite))
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(define  (tt:server-process-run areapath testsuite mtexe run-id #!key (profile-mode "")) ;; areapath is *toppath* for a given testsuite area
  (assert areapath  "FATAL: tt:server-process-run called without areapath defined.")
  (assert testsuite "FATAL: tt:server-process-run called without testsuite defined.")
  (assert mtexe     "FATAL: tt:server-process-run called without mtexe defined.")
  ;; mtest -server - -m testsuite:ext-tests -db 6.db
  (let* ((dbfname  (dbmod:run-id->dbfname run-id))
	 (load     (get-normalized-cpu-load))
	 (trying   (length (tt:find-server areapath dbfname)))
	 (nrun     (number-of-processes-running (conc "mtest.*server.*"testsuite".*"dbfname))))
    (cond
     ((> load 2.0)
      (debug:print 0 *default-log-port* "Normalized load "load" on " (get-host-name) " is over the limit of 2.0. Not starting a server.")
      (thread-sleep! 1))
     ((> nrun 100)
      (debug:print 0 *default-log-port* nrun" servers running on " (get-host-name) ", not starting another.")
      (thread-sleep! 1))
     ((> trying 4)
      (debug:print 0 *default-log-port* trying" servers registered in .servinfo dir. not starting another.")
      (thread-sleep! 1))
     (else
      (if (not (file-exists? (conc areapath"/logs")))
	      (create-directory (conc areapath"/logs") #t))
	  (let* ((logfile   (conc areapath "/logs/server-"dbfname"-"(current-process-id)".log")) ;; -" curr-pid "-" target-host ".log"))
		 (cmdln     (conc
			     mtexe
			     " -server - ";; (or target-host "-")
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