Megatest

Diff
Login

Differences From Artifact [44746b8c36]:

To Artifact [cb31c71f30]:


239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
    (dbr:dbstruct-ondiskdb-set!  dbstruct db)
    (dbr:dbstruct-dbfile-set!    dbstruct dbfullname)
    (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")
				       (begin
					 ;; turn off writes - send busy or block?
					 ;; call db2db internally
					 ;; turn writes back on
					 ;;
					 (set! *api-halt-writes* #t) ;; do we need a mutex?
					 ;; (dbmod:db-to-db-sync src-db dest-db last-update (dbfile:db-init-proc) keys)







|







239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
    (dbr:dbstruct-ondiskdb-set!  dbstruct db)
    (dbr:dbstruct-dbfile-set!    dbstruct dbfullname)
    (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 0 *default-log-port* "WARNING: overlapping calls to sync to disk")
				       (begin
					 ;; turn off writes - send busy or block?
					 ;; call db2db internally
					 ;; turn writes back on
					 ;;
					 (set! *api-halt-writes* #t) ;; do we need a mutex?
					 ;; (dbmod:db-to-db-sync src-db dest-db last-update (dbfile:db-init-proc) keys)
460
461
462
463
464
465
466













467
468
469
470
471
472

473
474
475
476
477

478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502

503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522















523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553


554
555






556




557
558





559
560
561
562
563
564
565
566
567
568
     (lambda (name)
       (if (equal? name "last_update")
	   (set! has-last #t)))
     dbh
     (conc "SELECT name FROM pragma_table_info('"tablename"') as tblInfo;"))
    has-last))














;; tbls is ( ("tablename" ( "field1" [#f|proc1] ) ( "field2" [#f|proc2] ) .... ) )
;;
;; direction = fromdest, todisk
;; mode = 'full, 'incr
;;
;; Idea: youngest in dest is last_update time

;;
(define (dbmod:attach-sync tables dbh destdbfile direction #!key
			   (mode 'full)
			   (no-update '("keys")) ;; do
			   )

  (let* ((num-changes 0)
	 (update-changed (lambda (num-changed table qryname)
			   (if (> num-changed 0)
			       (begin
				 (debug:print-info 0 *default-log-port* "Changed "num-changed" rows for table "table", qry "qryname)
				 (set! num-changes (+ num-changes num-changed)))))))
    (debug:print 0 *default-log-port* "Doing sync "direction" "destdbfile)
    (if (not (sqlite3:auto-committing? dbh))
	(debug:print 0 *default-log-port* "Skipping sync due to transaction in flight.")
	(let* ((table-names  (map car tables))
	       (dest-exists  (file-exists? destdbfile)))
	  (assert dest-exists "FATAL: sync called with non-existant file, "destdbfile)
	  ;; attach the destdbfile
	  ;; for each table
	  ;;    insert into dest.<table> select * from src.<table> where last_update>last_update
	  ;; done
	  (debug:print 0 *default-log-port* "Attaching "destdbfile" as auxdb")
	  (handle-exceptions
	      exn
	      (begin
		(debug:print 0 "ATTACH failed, exiting. exn="(condition->list exn))
		(exit 1))
	    (sqlite3:execute dbh (conc "ATTACH '"destdbfile"' AS auxdb;")))
	  (for-each
	   (lambda (table)

	     (let* ((tbldat (alist-ref table tables equal?))
		    (fields (map car tbldat))
		    (no-id-fields (filter (lambda (x)(not (equal? x "id"))) fields))
		    (fields-str (string-intersperse fields ","))
		    (no-id-fields-str (string-intersperse no-id-fields ","))
		    (dir    (eq? direction 'todisk))
		    (fromdb (if dir "main." "auxdb."))
		    (todb   (if dir "auxdb." "main."))
		    (set-str (string-intersperse
			      (map (lambda (field)
				     (conc fromdb field"="todb field))
				   fields)
			      ","))
		    (stmt1      (conc "INSERT OR IGNORE INTO "todb table
				      " SELECT * FROM "fromdb table";"))
		    (stmt2      (conc "INSERT OR IGNORE INTO "todb table
				      " SELECT * FROM "fromdb table" WHERE "fromdb table".id=?;"))
		    (stmt8      (conc "UPDATE "todb table" SET ("no-id-fields-str") = (SELECT "no-id-fields-str" FROM "fromdb table" WHERE "todb table".id="fromdb table".id"
				      (conc " AND "fromdb table".last_update > "todb table".last_update);")
				      ");"))















		    (stmt9      (conc "UPDATE "todb table" SET ("no-id-fields-str") = "
				      "(SELECT "no-id-fields-str" FROM "fromdb table" WHERE "fromdb table".id=?)"
				      " WHERE "todb table".id=?"))
		    (newrec     (conc "SELECT id FROM "fromdb table" WHERE id NOT IN (SELECT id FROM "todb table");"))
		    #;(changedrec (conc "SELECT id FROM "fromdb table" WHERE "fromdb table".last_update > "todb table".last_update AND "
		    fromdb table".id="todb table".id;")) ;; main = fromdb
		    (changedrec (conc "SELECT "fromdb table".id FROM "fromdb table" join "todb table" on "fromdb table".id="todb table".id WHERE "fromdb table".last_update > "todb table".last_update;"))
                                    ;; SELECT main.tests.id FROM main.tests join auxdb.tests on main.tests.id=auxdb.tests.id WHERE main.tests.last_update > auxdb.tests.last_update;"
		    (start-ms   (current-milliseconds))
		    (new-ids    (sqlite3:fold-row (lambda (res id)(cons id res)) '() dbh newrec)))
	       ;; (debug:print 0 *default-log-port* "Got "(length aux-ids)" in aux-ids and "(length main-ids)" in main-ids")
	       (update-changed (length new-ids) table "new records")
	       (mutex-lock! *db-transaction-mutex*)
	       (handle-exceptions
		   exn
		   (debug:print 0 *default-log-port* "Transaction update of "table" failed. "(condition->list exn))
		 (sqlite3:with-transaction
		  dbh
		  (lambda ()
		    (for-each (lambda (id)
				(sqlite3:execute dbh stmt2 id))
			      new-ids))))
	       
	       (if (member "last_update" fields)
		   (handle-exceptions
		       exn
		       (debug:print 0 *default-log-port* "Transaction update of "table" failed. "(condition->list exn))
		     (sqlite3:with-transaction
		      dbh
		      (lambda ()
			(let* ((changed-ids  (sqlite3:fold-row (lambda (res id)(cons id res)) '() dbh changedrec)))


			  (update-changed (length changed-ids) table "changed records")
			  (for-each (lambda (id)






				      (sqlite3:execute dbh stmt9 id id))




				    changed-ids))))))
		   





	       (mutex-unlock! *db-transaction-mutex*)
	       
	       (debug:print 0 *default-log-port* "Synced table "table
	        	    " in "(- (current-milliseconds) start-ms)"ms")
	       
	       ))
	   table-names)
	  (sqlite3:execute dbh "DETACH auxdb;")))
    num-changes))








>
>
>
>
>
>
>
>
>
>
>
>
>






>
|




>
|





|









|








>
|


















|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|



<
<

<


<




|










|



|
>
>


>
>
>
>
>
>
|
>
>
>
>
|
|
>
>
>
>
>


|







460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557


558

559
560

561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
     (lambda (name)
       (if (equal? name "last_update")
	   (set! has-last #t)))
     dbh
     (conc "SELECT name FROM pragma_table_info('"tablename"') as tblInfo;"))
    has-last))

(define (replace-question-marks-with-number str num)
  (define (replace-helper str index result)
    (if (>= index (string-length str))
        result
        (let ((char (string-ref str index)))
          (if (char=? char #\?)
              (replace-helper str (+ index 1) (string-append result (number->string num)))
              (replace-helper str (+ index 1) (string-append result (string char)))))))

  (replace-helper str 0 ""))


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; tbls is ( ("tablename" ( "field1" [#f|proc1] ) ( "field2" [#f|proc2] ) .... ) )
;;
;; direction = fromdest, todisk
;; mode = 'full, 'incr
;;
;; Idea: youngest in dest is last_update time
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(define (dbmod:attach-sync tables dbh destdbfile direction #!key
			   (mode 'full)
			   (no-update '("keys")) ;; do
			   )
   (debug:print-info 2 *default-log-port* "dbmod:attach-sync")
   (let* ((num-changes 0)
	 (update-changed (lambda (num-changed table qryname)
			   (if (> num-changed 0)
			       (begin
				 (debug:print-info 0 *default-log-port* "Changed "num-changed" rows for table "table", qry "qryname)
				 (set! num-changes (+ num-changes num-changed)))))))
    (debug:print 2 *default-log-port* "Doing sync "direction" "destdbfile)
    (if (not (sqlite3:auto-committing? dbh))
	(debug:print 0 *default-log-port* "Skipping sync due to transaction in flight.")
	(let* ((table-names  (map car tables))
	       (dest-exists  (file-exists? destdbfile)))
	  (assert dest-exists "FATAL: sync called with non-existant file, "destdbfile)
	  ;; attach the destdbfile
	  ;; for each table
	  ;;    insert into dest.<table> select * from src.<table> where last_update>last_update
	  ;; done
	  (debug:print 2 *default-log-port* "Attaching "destdbfile" as auxdb")
	  (handle-exceptions
	      exn
	      (begin
		(debug:print 0 "ATTACH failed, exiting. exn="(condition->list exn))
		(exit 1))
	    (sqlite3:execute dbh (conc "ATTACH '"destdbfile"' AS auxdb;")))
	  (for-each
	   (lambda (table)
	     (let* ((dummy (debug:print 2 *default-log-port* "Doing table " table))
                    (tbldat (alist-ref table tables equal?))
		    (fields (map car tbldat))
		    (no-id-fields (filter (lambda (x)(not (equal? x "id"))) fields))
		    (fields-str (string-intersperse fields ","))
		    (no-id-fields-str (string-intersperse no-id-fields ","))
		    (dir    (eq? direction 'todisk))
		    (fromdb (if dir "main." "auxdb."))
		    (todb   (if dir "auxdb." "main."))
		    (set-str (string-intersperse
			      (map (lambda (field)
				     (conc fromdb field"="todb field))
				   fields)
			      ","))
		    (stmt1      (conc "INSERT OR IGNORE INTO "todb table
				      " SELECT * FROM "fromdb table";"))
		    (stmt2      (conc "INSERT OR IGNORE INTO "todb table
				      " SELECT * FROM "fromdb table" WHERE "fromdb table".id=?;"))
		    (stmt8      (conc "UPDATE "todb table" SET ("no-id-fields-str") = (SELECT "no-id-fields-str" FROM "fromdb table" WHERE "todb table".id="fromdb table".id"
				      (conc " AND "fromdb table".last_update > "todb table".last_update);")
                                      ");"))
		    (update-string (conc "UPDATE "todb table" SET "))
                    (split-update 
                      (let ()
                        (for-each 
                          (lambda (column)
                            (set! update-string (conc update-string column" = (SELECT "column" FROM "fromdb table" WHERE "fromdb table".id=?), "))
                          )
                          no-id-fields
                        )
                        ;; drop the last ", "
                        (conc (substring update-string 0 (-(string-length update-string) 2)) " WHERE "todb table".id=? ")
                      )
                    )


                    (stmt9      (conc "UPDATE "todb table" SET ("no-id-fields-str") = "
				      "(SELECT "no-id-fields-str" FROM "fromdb table" WHERE "fromdb table".id=?)"
				      " WHERE "todb table".id=?"))
		    (newrec     (conc "SELECT id FROM "fromdb table" WHERE id NOT IN (SELECT id FROM "todb table");"))


		    (changedrec (conc "SELECT "fromdb table".id FROM "fromdb table" join "todb table" on "fromdb table".id="todb table".id WHERE "fromdb table".last_update > "todb table".last_update;"))

		    (start-ms   (current-milliseconds))
		    (new-ids    (sqlite3:fold-row (lambda (res id)(cons id res)) '() dbh newrec)))

	       (update-changed (length new-ids) table "new records")
	       (mutex-lock! *db-transaction-mutex*)
	       (handle-exceptions
		   exn
		   (debug:print 0 *default-log-port* "Transaction update of id fields in "table" failed.")
		 (sqlite3:with-transaction
		  dbh
		  (lambda ()
		    (for-each (lambda (id)
				(sqlite3:execute dbh stmt2 id))
			      new-ids))))
	       
	       (if (member "last_update" fields)
		   (handle-exceptions
		       exn
		       (debug:print 0 *default-log-port* "Transaction update of non id fields in "table" failed.")
		     (sqlite3:with-transaction
		      dbh
		      (lambda ()
			(let* ((changed-ids  (sqlite3:fold-row (lambda (res id)(cons id res)) '() dbh changedrec))
                               (sql-query "") 
                               )
			  (update-changed (length changed-ids) table "changed records")
			  (for-each (lambda (id)
                             (let* ((update-with-ids (replace-question-marks-with-number split-update id))
                                   )
                                   (debug:print 2 *default-log-port*  "about to do sqlite3:execute " dbh " " update-with-ids )
                                   (handle-exceptions
		                        exn
		                        (debug:print 0 *default-log-port* "update from " fromdb table " to " todb table " failed: " ((condition-property-accessor 'exn 'message) exn))
				        (sqlite3:execute dbh update-with-ids)
                                   )
                                   (debug:print 2 *default-log-port*  "after sqlite3:execute")
                                )
                             )
			     changed-ids
                         )
                       )
                     )
                   )
                 )
               )
	       (mutex-unlock! *db-transaction-mutex*)
	       
	       (debug:print 2 *default-log-port* "Synced table "table
	        	    " in "(- (current-milliseconds) start-ms)"ms")
	       
	       ))
	   table-names)
	  (sqlite3:execute dbh "DETACH auxdb;")))
    num-changes))