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Comment:wip
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | v1.7001-multi-db-02
Files: files | file ages | folders
SHA1: f6bba6dbbb7f1e53db7734d57c3ea2121c1381d6
User & Date: matt on 2022-03-12 20:28:07
Other Links: branch diff | manifest | tags
Context
2022-03-13
20:27
wip check-in: cd75b861ad user: matt tags: v1.7001-multi-db-02
2022-03-12
20:28
wip check-in: f6bba6dbbb user: matt tags: v1.7001-multi-db-02
15:33
Got enough in place to run db:get-keys check-in: dc9845bf12 user: matt tags: v1.7001-multi-db-02
Changes
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Modified Makefile from [ea4c347c2d] to [d5e6715cc1].

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           process.scm runs.scm tasks.scm tests.scm genexample.scm	\
           http-transport.scm filedb.scm tdb.scm client.scm mt.scm	\
           ezsteps.scm lock-queue.scm sdb.scm rmt.scm api.scm		\
           subrun.scm portlogger.scm archive.scm env.scm		\
           diff-report.scm cgisetup/models/pgdb.scm

# module source files
MSRCFILES = dbmod.scm dbfile.scm
MSRCFILES = dbmod.scm dbfile.scm # debugprint.scm mtargs.scm

# mofiles/dbfile.o     : mofiles/debugprint.o
# mofiles/debugprint.o : mofiles/mtargs.o

# ftail.scm rmtmod.scm commonmod.scm removed
# MSRCFILES = ducttape-lib.scm pkts.scm stml2.scm cookie.scm mutils.scm	\
#             mtargs.scm commonmod.scm dbmod.scm adjutant.scm ulex.scm	\
#             rmtmod.scm apimod.scm

GUISRCF = dashboard-context-menu.scm dashboard-tests.scm		\
          dashboard-guimonitor.scm gutils.scm dcommon.scm tree.scm	\
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tests.o db.o launch.o runs.o dashboard-tests.o				\
dashboard-context-menu.o dashboard-guimonitor.o dashboard-main.o	\
monitor.o dashboard.o archive.o megatest.o : db_records.scm megatest-fossil-hash.scm

tests.o runs.o dashboard.o dashboard-tests.o dashboard-context-menu.o dashboard-main.o  : run_records.scm

db.o ezsteps.o keys.o launch.o megatest.o monitor.o runs-for-ref.o runs.o tests.o : key_records.scm
db.o api.o : mofiles/dbmod.o mofiles/dbfile.o
db.o api.o : mofiles/dbmod.o mofiles/dbfile.o mofiles/debugprint.o

tests.o tasks.o dashboard-tasks.o : task_records.scm

runs.o : test_records.scm

megatest.o : megatest-fossil-hash.scm megatest-version.scm
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Modified archive.scm from [a7e538df23] to [9231707c41].

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   (let* ((bup-exe               (or (configf:lookup *configdat* "archive" "bup") "bup"))
         (archive-internal-path (conc (common:get-testsuite-name) "-megatest-db/" ts "/megatest.db" ))
         (bup-restore-params  (list "-d" archive-path "restore" "-C" *toppath* archive-internal-path)))
		 (debug:print-info 2 *default-log-port* "Restoring archived data to " *toppath* " from archive in " archive-path " ... " archive-internal-path)
		 (run-n-wait bup-exe params: bup-restore-params print-cmd: "Running:"))
      (sleep 2)
      (db:multi-db-sync 
       (db:setup-db *dbstruct-dbs* *toppath* #f)
       (db:setup #t) ;; (db:setup-db *dbstruct-dbs* *toppath* #f)
       'killservers
       ;'dejunk
       ;'adj-testids
       'old2new
       )
      (debug:print-info 1 *default-log-port* "dropping triggers to update linktree") 
      (rmt:drop-all-triggers)
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Modified common.scm from [85af3678ab] to [2307821bb2].

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;;
(define (common:exit-on-version-changed)
  (if (common:on-homehost?)
      (if (common:api-changed?)
	  (let* ((mtconf (conc (get-environment-variable "MT_RUN_AREA_HOME") "/megatest.config"))
                 (dbfile  (conc (get-environment-variable "MT_RUN_AREA_HOME") "/megatest.db"))
                 (read-only (not (file-write-access? dbfile)))
                 (dbstruct (db:setup-db *dbstruct-dbs* *toppath* #f))) ;;  #t)))
                 (dbstruct (db:setup #t))) ;; (db:setup-db *dbstruct-dbs* *toppath* #f))) ;;  #t)))
	    (debug:print 0 *default-log-port*
			 "WARNING: Version mismatch!\n"
			 "   expected: " (common:version-signature) "\n"
			 "   got:      " (common:get-last-run-version))
            (cond
             ((get-environment-variable "MT_SKIP_DB_MIGRATE") #t)
             ((and (common:file-exists? mtconf) (common:file-exists? dbfile) (not read-only)
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(define (common:run-sync?)
    (and (common:on-homehost?)
	 (args:get-arg "-server")))

(define (common:human-time)
  (time->string (seconds->local-time (current-seconds)) "%Y-%m-%d %H:%M:%S"))

;;======================================================================
;; currently the primary job of the watchdog is to run the sync back to megatest.db from the db in /tmp
;; if we are on the homehost and we are a server (by definition we are on the homehost if we are a server)
;;
(define (common:readonly-watchdog dbstruct)
  (thread-sleep! 0.05) ;; delay for startup
  (debug:print-info 13 *default-log-port* "common:readonly-watchdog entered.")
  ;; sync megatest.db to /tmp/.../megatst.db
  (let* ((sync-cool-off-duration   3)
        (golden-mtdb     (dbr:dbstruct-mtdb dbstruct))
        (golden-mtpath   (db:dbdat-get-path golden-mtdb))
        (tmp-mtdb        (dbr:dbstruct-tmpdb dbstruct))
        (tmp-mtpath      (db:dbdat-get-path tmp-mtdb)))
    (debug:print-info 0 *default-log-port* "Read-only periodic sync thread started.")
    (let loop ((last-sync-time 0))
      (debug:print-info 13 *default-log-port* "loop top tmp-mtpath="tmp-mtpath" golden-mtpath="golden-mtpath)
      (let* ((duration-since-last-sync (- (current-seconds) last-sync-time)))
        (debug:print-info 13 *default-log-port* "duration-since-last-sync="duration-since-last-sync)
        (if (and (not *time-to-exit*)
                 (< duration-since-last-sync sync-cool-off-duration))
            (thread-sleep! (- sync-cool-off-duration duration-since-last-sync)))
        (if (not *time-to-exit*)
            (let ((golden-mtdb-mtime (file-modification-time golden-mtpath))
                  (tmp-mtdb-mtime    (file-modification-time tmp-mtpath)))
	      (if (> golden-mtdb-mtime tmp-mtdb-mtime)
		  (if (< golden-mtdb-mtime (- (current-seconds) 3)) ;; file has NOT been touched in past three seconds, this way multiple servers won't fight to sync back
		      (let ((res (db:multi-db-sync dbstruct 'old2new)))
			(debug:print-info 13 *default-log-port* "rosync called, " res " records transferred."))))
              (loop (current-seconds)))
            #t)))
    (debug:print-info 0 *default-log-port* "Exiting readonly-watchdog timer, *time-to-exit* = " *time-to-exit*" pid="(current-process-id)" mtpath="golden-mtpath)))

;;======================================================================
;; TODO: for multiple areas, we will have multiple watchdogs; and multiple threads to manage
(define (common:watchdog)
  (debug:print-info 13 *default-log-port* "common:watchdog entered.")
  (if (launch:setup)
      (if (common:on-homehost?)
	  (let ((dbstruct (db:setup-db *dbstruct-dbs* *toppath* #f))) ;;  #t)))
	    (debug:print-info 13 *default-log-port* "after db:setup with dbstruct=" dbstruct)
	    (cond
	     ((dbr:dbstruct-read-only dbstruct)
	      (debug:print-info 13 *default-log-port* "loading read-only watchdog")
	      (common:readonly-watchdog dbstruct))
	     (else
	      (debug:print-info 13 *default-log-port* "loading writable-watchdog.")
              (let* ((syncer (or (configf:lookup *configdat* "server" "sync-method") "delta-sync"))) ;; "brute-force-sync")))
                (cond
                 ((equal? syncer "brute-force-sync")
                  (server:writable-watchdog-bruteforce dbstruct))
                 ((equal? syncer "delta-sync")
                  (server:writable-watchdog-deltasync dbstruct))
                 (else
                  (debug:print-error 0 *default-log-port* "Unknown server/sync-method specified ("syncer") - valid values are brute-force-sync and delta-sync.")
                  (exit 1)))
                ;;(debug:print 1 *default-log-port* "INFO: ["(common:human-time)"] Syncer started (method="syncer")")
                )))
	    (debug:print-info 13 *default-log-port* "watchdog done."))
	  (debug:print-info 13 *default-log-port* "no need for watchdog on non-homehost"))))


(define (std-exit-procedure)
  ;;(common:telemetry-log-close)
  (on-exit (lambda () 0))
  ;;(debug:print-info 13 *default-log-port* "std-exit-procedure called; *time-to-exit*="*time-to-exit*)
  (let ((no-hurry  (if *time-to-exit* ;; hurry up
		       #f
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Modified db.scm from [91359509c9] to [0f451ec65c].

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     z3
     typed-records
     matchable)

(declare (unit db))
(declare (uses common))
(declare (uses dbmod))
;; (declare (uses debugprint))
(declare (uses dbfile))
(declare (uses keys))
(declare (uses ods))
(declare (uses client))
(declare (uses mt))

(include "common_records.scm")
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      (db:sync-tables (db:sync-all-tables-list dbstruct) update_info tmpdb refndb mtdb))
    (mutex-lock! *db-multi-sync-mutex*)
    (set! *db-last-sync* start-t)
    (set! *db-last-access* start-t)
    (mutex-unlock! *db-multi-sync-mutex*)
    (stack-push! (dbr:subdb-dbstack subdb) tmpdb)))

(define (db:safely-close-sqlite3-db db stmt-cache #!key (try-num 3))
  (if (<= try-num 0)
      #f
      (handle-exceptions
	  exn
	(begin
	  (print "Attempt to safely close sqlite3 db failed. Trying again. exn=" exn)
	  (thread-sleep! 3)
	  (sqlite3:interrupt! db)
	  (db:safely-close-sqlite3-db db stmt-cache try-num: (- try-num 1)))
	(if (sqlite3:database? db)
	    (let* ((stmts (and stmt-cache (hash-table-ref/default stmt-cache db #f))))
	      (if stmts (map sqlite3:finalize! (hash-table-values stmts)))
	      (sqlite3:finalize! db)
	      #t)
	    #f))))

;; close all opened run-id dbs
(define (db:close-all dbstruct)
  (if (dbr:dbstruct? dbstruct)
      (handle-exceptions
	  exn
	  (begin
	    (debug:print 0 *default-log-port* "WARNING: Finalizing failed, "  ((condition-property-accessor 'exn 'message) exn) ", note - exn=" exn)
	    (print-call-chain *default-log-port*))
	;; (db:sync-touched dbstruct 0 force-sync: #t) ;; NO. Do not do this here. Instead we rely on a server to be started when there are writes, even if the server itself is not going to be used as a server.
        (let* ((subdbs     (hash-table-values (dbr:dbstruct-subdbs dbstruct))))
	  (for-each
	   (lambda (subdb)
	     (let* ((tdbs       (stack->list (dbr:subdb-dbstack subdb)))
		    (mdb        (dbr:dbdat-dbh (dbr:subdb-mtdb subdb)))
		    (rdb        (dbr:dbdat-dbh (dbr:subdb-refndb subdb))))
		    
	       (map (lambda (dbdat)
		      (let* ((stmt-cache (dbr:dbdat-stmt-cache dbdat))
			     (dbh        (dbr:dbdat-dbh        dbdat)))
			(db:safely-close-sqlite3-db dbh stmt-cache)))
;; db:safely-close-sqlite3-db and db:close-all were here, moved to dbfile
		    tdbs)))
	   subdbs)
          (db:safely-close-sqlite3-db mdb stmt-cache)     ;; (if (sqlite3:database? mdb) (sqlite3:finalize! mdb))
          (db:safely-close-sqlite3-db rdb stmt-cache))))) ;; (if (sqlite3:database? rdb) (sqlite3:finalize! rdb))))))

;;   (let ((locdbs (dbr:dbstruct-locdbs dbstruct)))
;;     (if (hash-table? locdbs)
;; 	(for-each (lambda (run-id)
;; 		    (db:close-run-db dbstruct run-id))
;; 		  (hash-table-keys locdbs)))))
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     results)
    ;; brutal clean up
    (stack-push! (dbr:dbstruct-dbstack dbstruct) dbdat)
    (system "rm -rf tempdir")))

;; (db:extract-ods-file db "outputfile.ods" '(("sysname" "%")("fsname" "%")("datapath" "%")) "%")

;;======================================================================
;; moving watch dogs here due to dependencies
;;======================================================================

;;======================================================================
;; currently the primary job of the watchdog is to run the sync back to megatest.db from the db in /tmp
;; if we are on the homehost and we are a server (by definition we are on the homehost if we are a server)
;;
(define (common:readonly-watchdog dbstruct)
  (thread-sleep! 0.05) ;; delay for startup
  (debug:print-info 13 *default-log-port* "common:readonly-watchdog entered.")
  ;; sync megatest.db to /tmp/.../megatst.db
  (let* ((sync-cool-off-duration   3)
        (golden-mtdb     (dbr:dbstruct-mtdb dbstruct))
        (golden-mtpath   (db:dbdat-get-path golden-mtdb))
        (tmp-mtdb        (dbr:dbstruct-tmpdb dbstruct))
        (tmp-mtpath      (db:dbdat-get-path tmp-mtdb)))
    (debug:print-info 0 *default-log-port* "Read-only periodic sync thread started.")
    (let loop ((last-sync-time 0))
      (debug:print-info 13 *default-log-port* "loop top tmp-mtpath="tmp-mtpath" golden-mtpath="golden-mtpath)
      (let* ((duration-since-last-sync (- (current-seconds) last-sync-time)))
        (debug:print-info 13 *default-log-port* "duration-since-last-sync="duration-since-last-sync)
        (if (and (not *time-to-exit*)
                 (< duration-since-last-sync sync-cool-off-duration))
            (thread-sleep! (- sync-cool-off-duration duration-since-last-sync)))
        (if (not *time-to-exit*)
            (let ((golden-mtdb-mtime (file-modification-time golden-mtpath))
                  (tmp-mtdb-mtime    (file-modification-time tmp-mtpath)))
	      (if (> golden-mtdb-mtime tmp-mtdb-mtime)
		  (if (< golden-mtdb-mtime (- (current-seconds) 3)) ;; file has NOT been touched in past three seconds, this way multiple servers won't fight to sync back
		      (let ((res (db:multi-db-sync dbstruct 'old2new)))
			(debug:print-info 13 *default-log-port* "rosync called, " res " records transferred."))))
              (loop (current-seconds)))
            #t)))
    (debug:print-info 0 *default-log-port* "Exiting readonly-watchdog timer, *time-to-exit* = " *time-to-exit*" pid="(current-process-id)" mtpath="golden-mtpath)))

;;======================================================================
;; TODO: for multiple areas, we will have multiple watchdogs; and multiple threads to manage
(define (common:watchdog)
  (debug:print-info 13 *default-log-port* "common:watchdog entered.")
  (if (launch:setup)
      (if (common:on-homehost?)
	  (let ((dbstruct (db:setup #t))) ;; (db:setup-db *dbstruct-dbs* *toppath* #f))) ;;  #t)))
	    (debug:print-info 13 *default-log-port* "after db:setup with dbstruct=" dbstruct)
	    (cond
	     ((dbr:dbstruct-read-only dbstruct)
	      (debug:print-info 13 *default-log-port* "loading read-only watchdog")
	      (common:readonly-watchdog dbstruct))
	     (else
	      (debug:print-info 13 *default-log-port* "loading writable-watchdog.")
              (let* ((syncer (or (configf:lookup *configdat* "server" "sync-method") "delta-sync"))) ;; "brute-force-sync")))
                (cond
                 ((equal? syncer "brute-force-sync")
                  (server:writable-watchdog-bruteforce dbstruct))
                 ((equal? syncer "delta-sync")
                  (server:writable-watchdog-deltasync dbstruct))
                 (else
                  (debug:print-error 0 *default-log-port* "Unknown server/sync-method specified ("syncer") - valid values are brute-force-sync and delta-sync.")
                  (exit 1)))
                ;;(debug:print 1 *default-log-port* "INFO: ["(common:human-time)"] Syncer started (method="syncer")")
                )))
	    (debug:print-info 13 *default-log-port* "watchdog done."))
	  (debug:print-info 13 *default-log-port* "no need for watchdog on non-homehost"))))

(define (server:writable-watchdog-bruteforce dbstruct)
  (thread-sleep! 1) ;; delay for startup
  (let* ((do-a-sync  (server:get-bruteforce-syncer dbstruct))
         (final-sync (server:get-bruteforce-syncer dbstruct fork-to-background: #t persist-until-sync: #t)))
    (when (and (not (args:get-arg "-sync-to-megatest.db")) ;; conditions under which we do not run the sync
	       (args:get-arg "-server"))
      
      (let loop ()
	(do-a-sync)
        (if (not *time-to-exit*) (loop))) ;; keep going unless time to exit

      ;; time to exit, close the no-sync db here
      (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)
  ;; This is awful complex and convoluted. Plan to redo?
  ;; for now ... skip it.
;; ==> 
;; ==> (thread-sleep! 0.05) ;; 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   #f) ;; (dbr:dbstruct-stmt-cache dbstruct))
;; ==> 	(sync-duration 0) ;; run time of the sync in milliseconds
;; ==>       (subdbs       (hash-table-values (dbr:dbstruct-subdbs dbstruct))))
;; ==>   (set! *no-sync-db* no-sync-db) ;; make the no sync db available to api calls
;; ==>   (debug:print-info 2 *default-log-port* "Periodic sync thread started.")
;; ==>   (debug:print-info 3 *default-log-port* "watchdog starting. legacy-sync is " legacy-sync" pid="(current-process-id)  );;  " this-wd-num="this-wd-num)
;; ==>   
;; ==>   (if (and legacy-sync (not *time-to-exit*))
;; ==> 	(begin
;; ==> 	  (debug:print-info 0 *default-log-port* "Server running, periodic sync started.")
	  (let loop ()
;; ==> 	    ;; sync for filesystem local db writes
;; ==> 	    ;;
;; ==> 	    (mutex-lock! *db-multi-sync-mutex*)
;; ==> 	       (let* ((start-file (conc tmp-area "/.start-sync"))
;; ==> 		      (end-file   (conc tmp-area "/.end-sync"))
;; ==> 			      
;; ==> 		      (need-sync        (>= *db-last-access* *db-last-sync*)) ;; no sync since last write
;; ==> 		      (sync-in-progress *db-sync-in-progress*)
;; ==> 		      (min-intersync-delay (configf:lookup-number *configdat* "server" "minimum-intersync-delay" default: 5))
;; ==> 		      (should-sync      (and (not *time-to-exit*)
;; ==> 					     (> (- (current-seconds) *db-last-sync*) min-intersync-delay))) ;; sync every five seconds minimum, deprecated logic, can probably be removed
;; ==> 		      (start-time       (current-seconds))
;; ==> 		      (cpu-load-adj     (alist-ref 'adj-proc-load (common:get-normalized-cpu-load #f)))
;; ==> 		      (mt-mod-time      (file-modification-time mtpath))
;; ==> 		      (last-sync-start  (if (common:file-exists? start-file)
;; ==> 					    (file-modification-time start-file)
;; ==> 					    0))
;; ==> 		      (last-sync-end    (if (common:file-exists? end-file)
;; ==> 					    (file-modification-time end-file)
;; ==> 					    10))
;; ==> 		      (sync-period      (+ 3 (* cpu-load-adj 30))) ;; as adjusted load increases increase the sync period
;; ==> 		      (recently-synced  (and (< (- start-time mt-mod-time) sync-period) ;; not useful if sync didn't modify megatest.db!
;; ==> 					     (< mt-mod-time last-sync-start)))
;; ==> 		      (sync-done        (<= last-sync-start last-sync-end))
;; ==> 		      (sync-stale       (> start-time (+ last-sync-start sync-stale-seconds)))
;; ==> 		      (will-sync        (and (not *time-to-exit*)       ;; do not start a sync if we are in the process of exiting
;; ==> 					     (or need-sync should-sync)
;; ==> 					     (or sync-done sync-stale)
;; ==> 					     (not sync-in-progress)
;; ==> 					     (not recently-synced))))
;; ==> 		 (debug:print-info 13 *default-log-port* "WD writable-watchdog top of loop.  need-sync="need-sync" sync-in-progress=" sync-in-progress
;; ==> 				   " should-sync="should-sync" start-time="start-time" mt-mod-time="mt-mod-time" recently-synced="recently-synced" will-sync="will-sync
;; ==> 				   " sync-done=" sync-done " sync-period=" sync-period)
;; ==> 		 (if (and (> sync-period 5)
;; ==> 			  (common:low-noise-print 30 "sync-period"))
;; ==> 		     (debug:print-info 0 *default-log-port* "Increased sync period due to long sync times, sync took: " sync-period " seconds."))
;; ==> 		 ;; (if recently-synced (debug:print-info 0 *default-log-port* "Skipping sync due to recently-synced flag=" recently-synced))
;; ==> 		 ;; (debug:print-info 0 *default-log-port* "need-sync: " need-sync " sync-in-progress: " sync-in-progress " should-sync: " should-sync " will-sync: " will-sync)
;; ==> 		 (if will-sync (set! *db-sync-in-progress* #t))
;; ==> 		 (mutex-unlock! *db-multi-sync-mutex*)
;; ==> 		 (if will-sync
;; ==> 		     (let (;; (max-sync-duration  (configf:lookup-number *configdat* "server" "max-sync-duration")) ;; KEEPING THIS AVAILABLE BUT SHOULD NOT USE, I'M PRETTY SURE IT DOES NOT WORK!
;; ==> 			   (sync-start         (current-milliseconds)))
;; ==> 		       (with-output-to-file start-file (lambda ()(print (current-process-id))))
;; ==> 		       
;; ==> 		       ;; put lock here
;; ==> 		       
;; ==> 		       ;; (if (or (not max-sync-duration)
;; ==> 		       ;;        (< sync-duration max-sync-duration)) ;; NOTE: db:sync-to-megatest.db keeps track of time of last sync and syncs incrementally
;; ==> 
;; ==> 		      ;;
;; ==> 		     
;; ==> 		       (for-each
;; ==> 			(lambda (subdb)
;; ==> 			  (let* (;;(dbstruct (db:setup))
;; ==> 				 (mtdb       (dbr:subdb-mtdb subdb))
;; ==> 				 (mtpath     (db:dbdat-get-path mtdb))
;; ==> 				 (tmp-area   (common:get-db-tmp-area))
;; ==> 				 (res        (db:sync-to-megatest.db dbstruct no-sync-db: no-sync-db))) ;; did we sync any data? If so need to set the db touched flag to keep the server alive
;; ==> 			    (set! sync-duration (- (current-milliseconds) sync-start))
;; ==> 			    (if (> res 0) ;; some records were transferred, keep the db alive
;; ==> 				(begin
;; ==> 				  (mutex-lock! *heartbeat-mutex*)
;; ==> 				  (set! *db-last-access* (current-seconds))
;; ==> 				  (mutex-unlock! *heartbeat-mutex*)
;; ==> 				  (debug:print-info 0 *default-log-port* "sync called, " res " records transferred."))
;; ==> 				(debug:print-info 2 *default-log-port* "sync called but zero records transferred")))
;; ==> 			  )
;; ==> 			subdbs)))
;; ==> 		 ;;                         ;; TODO: factor this next routine out into a function
;; ==> 		 ;;                         (with-input-from-pipe ;; this should not block other threads but need to verify this
;; ==> 		 ;;                          (conc "megatest -sync-to-megatest.db -m testsuite:" (common:get-area-name) ":" *toppath*)
;; ==> 		 ;;                          (lambda ()
;; ==> 		 ;;                            (let loop ((inl (read-line))
;; ==> 		 ;;                                       (res #f))
;; ==> 		 ;;                              (if (eof-object? inl)
;; ==> 		 ;;                                  (begin
;; ==> 		 ;;                                    (set! sync-duration (- (current-milliseconds) sync-start))
;; ==> 		 ;;                                    (cond
;; ==> 		 ;;                                     ((not res)
;; ==> 		 ;;                                      (debug:print 0 *default-log-port* "ERROR: sync from /tmp db to megatest.db appears to have failed. Recommended that you stop your runs and run \"megatest -cleanup-db\""))
;; ==> 		 ;;                                     ((> res 0)
;; ==> 		 ;;                                      (mutex-lock! *heartbeat-mutex*)
;; ==> 		 ;;                                      (set! *db-last-access* (current-seconds))
;; ==> 		 ;;                                      (mutex-unlock! *heartbeat-mutex*))))
;; ==> 		 ;;                                  (let ((num-synced (let ((matches (string-match "^Synced (\\d+).*$" inl)))
;; ==> 		 ;;                                                      (if matches
;; ==> 		 ;;                                                          (string->number (cadr matches))
;; ==> 		 ;;                                                          #f))))
;; ==> 		 ;;                                    (loop (read-line)
;; ==> 		 ;;                                          (or num-synced res))))))))))
;; ==> 		 
;; ==> 		 (if will-sync
;; ==> 		     (begin
;; ==> 		       (mutex-lock! *db-multi-sync-mutex*)
;; ==> 		       (set! *db-sync-in-progress* #f)
;; ==> 		       (set! *db-last-sync* start-time)
;; ==> 		       (with-output-to-file end-file (lambda ()(print (current-process-id))))
;; ==> 		       
;; ==> 		       ;; release lock here
;; ==> 		       
;; ==> 		       (mutex-unlock! *db-multi-sync-mutex*)))
;; ==> 		 (if (and debug-mode
;; ==> 			  (> (- start-time last-time) 60))
;; ==> 		     (begin
;; ==> 		       (set! last-time start-time)
;; ==> 		       (debug:print-info 4 *default-log-port* "timestamp -> " (seconds->time-string (current-seconds)) ", time since start -> " (seconds->hr-min-sec (- (current-seconds) *time-zero*))))))
;; ==> 	       
	       ;; keep going unless time to exit
	       ;;
	       (if (not *time-to-exit*)
		   (let delay-loop ((count 0))
		     ;;(debug:print-info 13 *default-log-port* "delay-loop top; count="count" pid="(current-process-id)" this-wd-num="this-wd-num" *time-to-exit*="*time-to-exit*)
		     
		     (if (and (not *time-to-exit*)
			      (< count 6)) ;; was 11, changing to 4. 
			 (begin
			   (thread-sleep! 1)
			   (delay-loop (+ count 1))))
		     (if (not *time-to-exit*) (loop))))
	       
;; ==> 	       ;; time to exit, close the no-sync db here
;; ==> 	       (db:no-sync-close-db no-sync-db stmt-cache)
	       (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) )))) ;; ))) ;;" this-wd-num="this-wd-num)))))))

Modified dbfile.scm from [8830f3b4fa] to [6f9211e5b8].

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;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(declare (unit dbfile))
;; (declare (uses debugprint))

(module dbfile
	*
	
(import scheme chicken data-structures extras)
(import (prefix sqlite3 sqlite3:)
	posix typed-records srfi-18
	srfi-69)
	srfi-69
	stack
	)

;; (import debugprint)

;;======================================================================
;;  R E C O R D S
;;======================================================================

;; a single Megatest area with it's multiple dbs is
;; managed in a dbstruct
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  (dbfile      #f)
  (dbh         #f)    
  (stmt-cache  (make-hash-table))
  (read-only   #f))

(define (dbfile:run-id->key run-id)
  (or run-id 'main))

(define (db:safely-close-sqlite3-db db stmt-cache #!key (try-num 3))
  (if (<= try-num 0)
      #f
      (handle-exceptions
	  exn
	(begin
	  (print "Attempt to safely close sqlite3 db failed. Trying again. exn=" exn)
	  (thread-sleep! 3)
	  (sqlite3:interrupt! db)
	  (db:safely-close-sqlite3-db db stmt-cache try-num: (- try-num 1)))
	(if (sqlite3:database? db)
	    (let* ((stmts (and stmt-cache (hash-table-ref/default stmt-cache db #f))))
	      (if stmts (map sqlite3:finalize! (hash-table-values stmts)))
	      (sqlite3:finalize! db)
	      #t)
	    #f))))

;; close all opened run-id dbs
(define (db:close-all dbstruct)
  (if (dbr:dbstruct? dbstruct)
;; (handle-exceptions
;; 	  exn
;; 	  (begin
;; 	    (debug:print 0 *default-log-port* "WARNING: Finalizing failed, "  ((condition-property-accessor 'exn 'message) exn) ", note - exn=" exn)
;; 	    (print-call-chain *default-log-port*))
	;; (db:sync-touched dbstruct 0 force-sync: #t) ;; NO. Do not do this here. Instead we rely on a server to be started when there are writes, even if the server itself is not going to be used as a server.
        (let* ((subdbs     (hash-table-values (dbr:dbstruct-subdbs dbstruct))))
	  (for-each
	   (lambda (subdb)
	     (let* ((tdbs       (stack->list (dbr:subdb-dbstack subdb)))
		    (mdb        (dbr:dbdat-dbh (dbr:subdb-mtdb subdb)))
		    (rdb        (dbr:dbdat-dbh (dbr:subdb-refndb subdb))))
		    
	       (map (lambda (dbdat)
		      (let* ((stmt-cache (dbr:dbdat-stmt-cache dbdat))
			     (dbh        (dbr:dbdat-dbh        dbdat)))
			(db:safely-close-sqlite3-db dbh stmt-cache)))
		    tdbs)
	       (db:safely-close-sqlite3-db mdb #f) ;; stmt-cache)     ;; (if (sqlite3:database? mdb) (sqlite3:finalize! mdb))
	       (db:safely-close-sqlite3-db rdb #f))) ;; stmt-cache))))) ;; (if (sqlite3:database? rdb) (sqlite3:finalize! rdb))))))
	   subdbs))))
;; )

;; ;; set up a single db (e.g. main.db, 1.db ... etc.)
;; ;;
;; (define (db:setup-db dbstruct areapath run-id)
;;   (let* ((dbname   (db:run-id->dbname run-id))
;; 	 (dbstruct (hash-table-ref/default dbstructs dbname #f)))
;;     (if dbstruct
︙

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(declare (unit debugprint))
(declare (uses mtargs))

(module debugprint
	*
	
;;(import scheme chicken data-structures extras files ports)
  (import
    scheme
    chicken
    data-structures
    posix
    ports
    extras
    
    ;; scheme
    ;; chicken.base
    ;; chicken.string
    ;; chicken.time
    ;; chicken.time.posix
    ;; chicken.port
    ;; chicken.process-context
    ;; chicken.process-context.posix
    
    (prefix mtargs args:)
    srfi-1
    ;; system-information
    )
  
;;======================================================================
;; debug stuff
;;======================================================================

(define verbosity (make-parameter '()))
(define *default-log-port*  (current-error-port))
(define debug:print-logger (make-parameter #f)) ;; set to a proc to call on every logging print
	 
(define (debug:setup)
  (let ((debugstr (or (args:get-arg "-debug")
      		      (args:get-arg "-debug-noprop")
      		      (get-environment-variable "MT_DEBUG_MODE"))))
    (verbosity (debug:calc-verbosity debugstr 'q))
    (debug:check-verbosity (verbosity) debugstr)
    ;; if we were handed a bad verbosity rule then we will override it with 1 and continue
    (if (not (verbosity))(verbosity 1))
    (if (and (not (args:get-arg "-debug-noprop"))
      	     (or (args:get-arg "-debug")
      		 (not (get-environment-variable "MT_DEBUG_MODE"))))
      	(setenv #;set-environment-variable! "MT_DEBUG_MODE" (if (list? (verbosity))
      				    (string-intersperse (map conc (verbosity)) ",")
      				    (conc (verbosity)))))))

;; check verbosity, #t is ok
(define (debug:check-verbosity verbosity vstr)
  (if (not (or (number? verbosity)
     	       (list?   verbosity)))
      (begin
     	(print "ERROR: Invalid debug value \"" vstr "\"")
     	#f)
      #t))

;;======================================================================
;; (define (debug:print . params) #f)
;; (define (debug:print-info . params) #f)
;; 
;; (define (set-functions dbgp dbgpinfo)
;;   (set! debug:print dbgp)
;;   (set! debug:print-info dbgpinfo))

;;======================================================================
;; this was cached based on results from profiling but it turned out the profiling
;; somehow went wrong - perhaps too many processes writing to it. Leaving the caching
;; in for now but can probably take it out later.
;;
(define (debug:calc-verbosity vstr arg) ;; arg is 'v (verbose) or 'q (quiet)
  (let* ((res (cond
	       ((number? vstr) vstr)
	       ((not (string?  vstr))   1)
	       ;; ((string-match  "^\\s*$" vstr) 1)
	       (vstr           (let ((debugvals  (filter number? (map string->number (string-split vstr ",")))))
				 (cond
				  ((> (length debugvals) 1) debugvals)
				  ((> (length debugvals) 0)(car debugvals))
				  (else 1))))
	       ((eq? arg 'v)   2) ;; verbose
	       ((eq? arg 'q)   0) ;; quiet
	       (else                   1))))
    (verbosity res)
    res))

;;======================================================================
;; check verbosity, #t is ok
#;(define (debug-check-verbosity verbosity vstr)
  (if (not (or (number? verbosity)
	       (list?   verbosity)))
      (begin
	(print "ERROR: Invalid debug value \"" vstr "\"")
	#f)
      #t))

(define (debug:debug-mode n)
  (let* ((vb (verbosity)))
    (cond
     ((and (number? vb)   ;; number number
	   (number? n))
      (<= n vb))
     ((and (list? vb)     ;; list   number
	   (number? n))
      (member n vb))
     ((and (list? vb)     ;; list   list
	   (list? n))
      (not (null? (lset-intersection! eq? vb n))))
     ((and (number? vb)
	   (list? n))
      (member vb n))
     (else #f))))

(define (debug:handle-remote-logging params)
  (if (debug:print-logger) ;; NOTE: turn params into string to keep things simple for now
      ((debug:print-logger)(conc "REMOTE ("(get-host-name)", pid="(current-process-id)") "
				 (string-intersperse (map conc params) " ") "; "
				 (string-intersperse (command-line-arguments) " ")))))

(define debug:enable-timestamp (make-parameter #t))

(define (debug:timestamp)
  (if (debug:enable-timestamp)
      (conc (time->string 
	     (seconds->local-time (current-seconds)) "%H:%M:%S") " ")
      ""))

  (define (debug:print n e . params)
  (if (debug:debug-mode n)
      (with-output-to-port (or e (current-error-port))
	(lambda ()
	  ;; (if *logging*
	      ;; (db:log-event (apply conc params))
	  (apply print (debug:timestamp) params)
	  ;; (debug:handle-remote-logging params)
	  )))
  #t ;; only here to make remote stuff happy. It'd be nice to fix that ...
  )

(define (debug:print-error n e . params)
  ;; normal print
  (if (debug:debug-mode n)
      (with-output-to-port (if (port? e) e (current-error-port))
	(lambda ()
	  (apply print "ERROR: " (debug:timestamp) params)
	  ;; (debug:handle-remote-logging (cons "ERROR: " params))
	  )))
  ;; pass important messages to stderr
  (if (and (eq? n 0)(not (eq? e (current-error-port)))) 
      (with-output-to-port (current-error-port)
	(lambda ()
	  (apply print "ERROR: " (debug:timestamp) params)
	  ))))

(define (debug:print-info n e . params)
  (if (debug:debug-mode n)
      (with-output-to-port (if (port? e) e (current-error-port))
	(lambda ()
	  (apply print "INFO: (" n ") "(debug:timestamp) params) ;; res)
	  ;; (debug:handle-remote-logging (cons "INFO: " params))
	  ))))

(define (debug:print-warn n e . params)
  (if (debug:debug-mode n)
      (with-output-to-port (if (port? e) e (current-error-port))
	(lambda ()
	  (apply print "WARN: (" n ") " (debug:timestamp) params) ;; res)
	  ;; (debug:handle-remote-logging (cons "WARN: " params))
	  ))))
)








Modified megatest.scm
from [78b560ce68]
to [de7df75e2a].




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(declare (uses runs))
(declare (uses launch))
(declare (uses server))
(declare (uses client))
(declare (uses tests))
(declare (uses genexample))
;; (declare (uses daemon))

(declare (uses db))
;; (declare (uses dcommon))

(declare (uses tdb))
(declare (uses mt))
(declare (uses api))
(declare (uses tasks)) ;; only used for debugging.
(declare (uses env))
(declare (uses diff-report))
(declare (uses dbmod))
(declare (uses dbmod.import))
(declare (uses dbfile))
(declare (uses dbfile.import))
;; (declare (uses debugprint))
;; (declare (uses debugprint.import))
;; (declare (uses mtargs))
;; (declare (uses mtargs.import))

;; (declare (uses ftail))
;; (import ftail)

(import dbmod
	dbfile)





︙







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from [e2f1c247b7]
to [147e7c2628].




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  (if (> (length args) 0)
      (apply print "ERROR: " args))
  (if (string? help)
      (print help)
      (print "Usage: " (car (argv)) " ... "))
  (exit 0))

 ;; one-of args defined
(define (args:any-defined? . param)
  (let ((res #f))
    (for-each 
     (lambda (arg)
       (if (get-arg arg)(set! res #t)))
     param)
    res))

;; args: 
(define (get-args args params switches arg-hash num-needed)
  (let* ((numtargs (length args))
	 (adj-num-needed (if num-needed (+ num-needed 2) #f)))
    (if (< numtargs (if adj-num-needed adj-num-needed 2))
	(if (>= num-needed 1)
	    (usage "No arguments provided")
	    '())




︙







Modified server.scm
from [99d72bd3eb]
to [df77c3b3af].




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                    ))
              (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
  (let* ((do-a-sync  (server:get-bruteforce-syncer dbstruct))
         (final-sync (server:get-bruteforce-syncer dbstruct fork-to-background: #t persist-until-sync: #t)))
    (when (and (not (args:get-arg "-sync-to-megatest.db")) ;; conditions under which we do not run the sync
	       (args:get-arg "-server"))
      
      (let loop ()
	(do-a-sync)
        (if (not *time-to-exit*) (loop))) ;; keep going unless time to exit

      ;; time to exit, close the no-sync db here
      (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
  (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
        )
    (set! *no-sync-db* no-sync-db) ;; make the no sync db available to api calls
    (debug:print-info 2 *default-log-port* "Periodic sync thread started.")
    (debug:print-info 3 *default-log-port* "watchdog starting. legacy-sync is " legacy-sync" pid="(current-process-id)  );;  " this-wd-num="this-wd-num)
    (if (and legacy-sync (not *time-to-exit*))
	(let* (;;(dbstruct (db:setup))
	       (mtdb       (dbr:dbstruct-mtdb dbstruct))
	       (mtpath     (db:dbdat-get-path mtdb))
	       (tmp-area   (common:get-db-tmp-area))
	       (start-file (conc tmp-area "/.start-sync"))
	       (end-file   (conc tmp-area "/.end-sync")))
	  (debug:print-info 0 *default-log-port* "Server running, periodic sync started.")
	  (let loop ()
	    ;; sync for filesystem local db writes
	    ;;
	    (mutex-lock! *db-multi-sync-mutex*)
	    (let* ((need-sync        (>= *db-last-access* *db-last-sync*)) ;; no sync since last write
		   (sync-in-progress *db-sync-in-progress*)
                   (min-intersync-delay (configf:lookup-number *configdat* "server" "minimum-intersync-delay" default: 5))
		   (should-sync      (and (not *time-to-exit*)
                                          (> (- (current-seconds) *db-last-sync*) min-intersync-delay))) ;; sync every five seconds minimum, deprecated logic, can probably be removed
		   (start-time       (current-seconds))
                   (cpu-load-adj     (alist-ref 'adj-proc-load (common:get-normalized-cpu-load #f)))
		   (mt-mod-time      (file-modification-time mtpath))
		   (last-sync-start  (if (common:file-exists? start-file)
					 (file-modification-time start-file)
					 0))
		   (last-sync-end    (if (common:file-exists? end-file)
					 (file-modification-time end-file)
					 10))
                   (sync-period      (+ 3 (* cpu-load-adj 30))) ;; as adjusted load increases increase the sync period
		   (recently-synced  (and (< (- start-time mt-mod-time) sync-period) ;; not useful if sync didn't modify megatest.db!
					  (< mt-mod-time last-sync-start)))
		   (sync-done        (<= last-sync-start last-sync-end))
                   (sync-stale       (> start-time (+ last-sync-start sync-stale-seconds)))
		   (will-sync        (and (not *time-to-exit*)       ;; do not start a sync if we are in the process of exiting
                                          (or need-sync should-sync)
					  (or sync-done sync-stale)
					  (not sync-in-progress)
					  (not recently-synced))))
              (debug:print-info 13 *default-log-port* "WD writable-watchdog top of loop.  need-sync="need-sync" sync-in-progress=" sync-in-progress
				" should-sync="should-sync" start-time="start-time" mt-mod-time="mt-mod-time" recently-synced="recently-synced" will-sync="will-sync
				" sync-done=" sync-done " sync-period=" sync-period)
              (if (and (> sync-period 5)
                       (common:low-noise-print 30 "sync-period"))
                  (debug:print-info 0 *default-log-port* "Increased sync period due to long sync times, sync took: " sync-period " seconds."))
	      ;; (if recently-synced (debug:print-info 0 *default-log-port* "Skipping sync due to recently-synced flag=" recently-synced))
	      ;; (debug:print-info 0 *default-log-port* "need-sync: " need-sync " sync-in-progress: " sync-in-progress " should-sync: " should-sync " will-sync: " will-sync)
	      (if will-sync (set! *db-sync-in-progress* #t))
	      (mutex-unlock! *db-multi-sync-mutex*)
	      (if will-sync
                  (let (;; (max-sync-duration  (configf:lookup-number *configdat* "server" "max-sync-duration")) ;; KEEPING THIS AVAILABLE BUT SHOULD NOT USE, I'M PRETTY SURE IT DOES NOT WORK!
                        (sync-start         (current-milliseconds)))
		    (with-output-to-file start-file (lambda ()(print (current-process-id))))
		    
		    ;; put lock here
		    
                    ;; (if (or (not max-sync-duration)
                    ;;        (< sync-duration max-sync-duration)) ;; NOTE: db:sync-to-megatest.db keeps track of time of last sync and syncs incrementally
                        (let ((res        (db:sync-to-megatest.db dbstruct no-sync-db: no-sync-db))) ;; did we sync any data? If so need to set the db touched flag to keep the server alive
                          (set! sync-duration (- (current-milliseconds) sync-start))
                          (if (> res 0) ;; some records were transferred, keep the db alive
                              (begin
                                (mutex-lock! *heartbeat-mutex*)
                                (set! *db-last-access* (current-seconds))
                                (mutex-unlock! *heartbeat-mutex*)
                                (debug:print-info 0 *default-log-port* "sync called, " res " records transferred."))
                              (debug:print-info 2 *default-log-port* "sync called but zero records transferred")))))
;;                         ;; TODO: factor this next routine out into a function
;;                         (with-input-from-pipe ;; this should not block other threads but need to verify this
;;                          (conc "megatest -sync-to-megatest.db -m testsuite:" (common:get-area-name) ":" *toppath*)
;;                          (lambda ()
;;                            (let loop ((inl (read-line))
;;                                       (res #f))
;;                              (if (eof-object? inl)
;;                                  (begin
;;                                    (set! sync-duration (- (current-milliseconds) sync-start))
;;                                    (cond
;;                                     ((not res)
;;                                      (debug:print 0 *default-log-port* "ERROR: sync from /tmp db to megatest.db appears to have failed. Recommended that you stop your runs and run \"megatest -cleanup-db\""))
;;                                     ((> res 0)
;;                                      (mutex-lock! *heartbeat-mutex*)
;;                                      (set! *db-last-access* (current-seconds))
;;                                      (mutex-unlock! *heartbeat-mutex*))))
;;                                  (let ((num-synced (let ((matches (string-match "^Synced (\\d+).*$" inl)))
;;                                                      (if matches
;;                                                          (string->number (cadr matches))
;;                                                          #f))))
;;                                    (loop (read-line)
;;                                          (or num-synced res))))))))))
	      (if will-sync
		  (begin
		    (mutex-lock! *db-multi-sync-mutex*)
		    (set! *db-sync-in-progress* #f)
		    (set! *db-last-sync* start-time)
		    (with-output-to-file end-file (lambda ()(print (current-process-id))))

		    ;; release lock here

		    (mutex-unlock! *db-multi-sync-mutex*)))
	      (if (and debug-mode
		       (> (- start-time last-time) 60))
		  (begin
		    (set! last-time start-time)
		    (debug:print-info 4 *default-log-port* "timestamp -> " (seconds->time-string (current-seconds)) ", time since start -> " (seconds->hr-min-sec (- (current-seconds) *time-zero*))))))
	    
	    ;; keep going unless time to exit
	    ;;
	    (if (not *time-to-exit*)
		(let delay-loop ((count 0))
                  ;;(debug:print-info 13 *default-log-port* "delay-loop top; count="count" pid="(current-process-id)" this-wd-num="this-wd-num" *time-to-exit*="*time-to-exit*)
                                                            
		  (if (and (not *time-to-exit*)
			   (< count 6)) ;; was 11, changing to 4. 
		      (begin
			(thread-sleep! 1)
			(delay-loop (+ count 1))))
		  (if (not *time-to-exit*) (loop))))
	    ;; time to exit, close the no-sync db here
	    (db:no-sync-close-db no-sync-db stmt-cache)
	    (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) ))))))) ;;" this-wd-num="this-wd-num)))))))














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