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;; This routine creates the db if not already present. It is only called if the db is not already opened
;;
(define (db:open-db dbstruct #!key (areapath #f)(do-sync #t)) ;; TODO: actually use areapath
(let ((tmpdb-stack (dbr:dbstruct-dbstack dbstruct))) ;; RA => Returns the first reference in dbstruct
(if (stack? tmpdb-stack)
(db:get-db tmpdb-stack) ;; get previously opened db (will create new db handle if all in the stack are already used
(let* ((max-stale-tmp (configf:lookup-number *configdat* "server" "filling-db-max-stale-seconds" default: 10))
(let* ((dbpath (db:dbfile-path )) ;; path to tmp db area
(dbpath (db:dbfile-path )) ;; path to tmp db area
(dbexists (common:file-exists? dbpath))
(tmpdbfname (conc dbpath "/megatest.db"))
(dbfexists (common:file-exists? tmpdbfname)) ;; (conc dbpath "/megatest.db")))
(mtdbexists (common:file-exists? (conc *toppath* "/megatest.db")))
(mtdbmodtime (if mtdbexists (common:lazy-sqlite-db-modification-time (conc *toppath* "/megatest.db")) #f))
(tmpdbmodtime (if dbfexists (common:lazy-sqlite-db-modification-time tmpdbfname) #f))
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(dbr:dbstruct-tmpdb-set! dbstruct tmpdb)
(dbr:dbstruct-dbstack-set! dbstruct (make-stack)) ;; BB: why a stack? Why would the number of db's be indeterminate? Is this a legacy of 1.db 2.db .. ?
(stack-push! (dbr:dbstruct-dbstack dbstruct) tmpdb) ;; olddb is already a (cons db path)
(dbr:dbstruct-refndb-set! dbstruct refndb)
;; (mutex-unlock! *rundb-mutex*)
(if (and (or (not dbfexists)
(and modtimedelta
(> modtimedelta 10))) ;; if db in tmp is over ten seconds older than the file in MTRA then do a sync back
(> modtimedelta max-stale-tmp))) ;; if db in tmp is over ten seconds older than the file in MTRA then do a sync back
do-sync)
(begin
(debug:print 1 *default-log-port* "filling db " (db:dbdat-get-path tmpdb) " with data \n from " (db:dbdat-get-path mtdb) " mod time delta: " modtimedelta)
(db:sync-tables (db:sync-all-tables-list dbstruct) #f mtdb refndb tmpdb)
;touch tmp db to avoid wal mode wierdness
(set! (file-modification-time tmpdbfname) (current-seconds))
(debug:print-info 13 *default-log-port* "db:sync-all-tables-list done.")
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