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(tmpdir (conc "/tmp/"(current-user-name)))
(tmpdb (let* ((fname (conc tmpdir"/" (string-translate areapath "/" ".")"-"(current-process-id)"-"dbfname)))
(if (not (file-exists? tmpdir))(create-directory tmpdir))
;; check if tmpdb already exists, either delete it or
;; add something to the name
fname))
(inmem (dbmod:open-inmem-db init-proc
(if (eq? (dbfile:cache-method) 'inmem)
#f
tmpdb)
;; (if (eq? (dbfile:cache-method) 'inmem)
;; #f
tmpdb
;; )
))
(write-access (file-write-access? dbpath))
(db (dbmod:safely-open-db dbfullname init-proc write-access))
(tables (db:sync-all-tables-list keys)))
(if (not (and (sqlite3:database? inmem)
(sqlite3:database? db)))
(begin
(debug:print 0 *default-log-port* "ERROR: Failed to properly open "dbfname-in", exiting immediately.")
(exit)))
;; (assert (sqlite3:database? inmem) "FATAL: open-dbmoddb: inmem is not a db")
(begin
(let* ((sync-cmd (conc "megatest -db2db -from "tmpdb" -to "dbfullname)))
(mutex-lock! *db-with-db-mutex*) ;; this mutex is used when overloaded or during a query that modifies the db
(set! *sync-in-progress* #t)
;; (if (eq? (dbfile:cache-method) 'inmem)
(dbmod:sync-gasket tables last-update inmem db
dbfullname syncdir keys)
;; (dbmod:sync-gasket tables last-update inmem db
;; dbfullname syncdir keys)
(thread-start! (make-thread
(lambda ()
(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)))))
;; (dbmod:sync-tables tables #f db inmem)
;; (if db
(dbmod:sync-gasket tables #f inmem db dbfullname 'fromdest keys) ;; ) ;; load into inmem
(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
;; (dbmod:sync-tables tables last-update inmem db)
;; (dbmod:sync-tables tables last-update db inmem))))
;; direction: 'fromdest 'todest
;;
(define (dbmod:sync-gasket tables last-update inmem dbh dbfname direction keys)
(assert (sqlite3:database? inmem) "FATAL: sync-gasket: inmem is not a db")
(assert (sqlite3:database? inmem) "FATAL: sync-gasket: dbh is not a db")
(debug:print-info 0 *default-log-port* "dbmod:sync-gasket called with sync-method="(dbfile:sync-method))
(case (dbfile:sync-method)
((none) #f)
((attach)
(dbmod:attach-sync tables inmem dbfname direction))
((newsync)
(dbmod:new-sync tables inmem dbh dbfname direction))
(else
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;; direction = fromdest, todest
;; mode = 'full, 'incr
;;
;; Idea: youngest in dest is last_update time
;;
(define (dbmod:new-sync tables dbh1 dbh2 destdbfile direction #!key
(mode 'full))
(debug:print 0 *default-log-port* "Doing sync "direction" "destdbfile)
(debug:print 0 *default-log-port* "Doing new-sync "direction" "destdbfile)
(if (not (sqlite3:auto-committing? dbh1))
(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)
(for-each
(lambda (table)
|