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*
(import scheme chicken data-structures extras)
(import (prefix sqlite3 sqlite3:)
posix typed-records srfi-18
srfi-69
stack
files
ports
)
;; (import debugprint)
;;======================================================================
;; R E C O R D S
;;======================================================================
;; a single Megatest area with it's multiple dbs is
;; managed in a dbstruct
;;
(defstruct dbr:dbstruct
(areapath #f)
(homehost #f)
(tmppath #f)
(read-only #f)
(subdbs (make-hash-table))
)
;; NOTE: Need one dbr:subdb per main.db, 1.db ...
;;
(defstruct dbr:subdb
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;; (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))))
(mtdbdat (dbr:dbdat-dbh (dbr:subdb-mtdbdat 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))))))
(db:safely-close-sqlite3-db mtdbdat #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))
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;; (l (string-length s)))
;; (substring s (- l 1) l)))
;; 1234 => 4/1234.db
;; #f => 0/main.db
;; (abandoned the idea of num/db)
;;
(define (db:run-id->path apath run-id)
(conc apath"/"(db:run-id->dbname run-id)))
(define (dbfile:run-id->path apath run-id)
(conc apath"/"(dbfile:run-id->dbname run-id)))
(define (db:dbname->path apath dbname)
(conc apath"/"dbname))
(define (db:run-id->dbname run-id)
(define (dbfile:run-id->dbname run-id)
(cond
((number? run-id) (conc ".db/" (modulo run-id 100) ".db"))
((not run-id) (conc ".db/main.db"))
(else run-id)))
;; Make the dbstruct, setup up auxillary db's and call for main db at least once
;;
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res
(let* ((newsubdb (make-dbr:subdb)))
(db:open-db newsubdb run-id areapath: (dbr:dbstruct-areapath dbstruct) do-sync: #t)
(hash-table-set! (dbr:dbstruct-subdbs dbstruct) (dbfile:run-id->key run-id) newsubdb)
newsubdb))))
(define (dbfile:get-subdb dbstruct run-id)
(let* ((dbfname (db:run-id->dbname run-id)))
(let* ((dbfname (dbfile:run-id->dbname run-id)))
(hash-table-ref/default (dbr:dbstruct-subdbs dbstruct) dbfname #f)))
(define (dbfile:set-subdb dbstruct run-id subdb)
(hash-table-set! (dbr:dbstruct-subdbs dbstruct) (db:run-id->dbname run-id) subdb))
(hash-table-set! (dbr:dbstruct-subdbs dbstruct) (dbfile:run-id->dbname run-id) subdb))
;; Get/open a database
;; if run-id => get run specific db
;; if #f => get main db
;; if run-id is a string treat it as a filename
;; if db already open - return inmem
;; if db not open, open inmem, rundb and sync then return inmem
;; inuse gets set automatically for rundb's
;;
(define (dbfile:get-dbdat dbstruct run-id)
(let* ((subdb (dbfile:get-subdb dbstruct run-id)))
(if (stack-empty? (dbr:subdb-dbstack subdb))
#f
(stack-pop! (dbr:subdb-dbstack subdb)))))
;; return a previously opened db handle to the stack of available handles
(define (dbfile:add-dbdat dbstruct run-id dbdat)
(let* ((subdb (dbfile:get-subdb dbstruct run-id)))
(stack-push! (dbr:subdb-dbstack subdb) dbdat)))
;; set up a subdb
;;
(define (dbfile:init-subdb dbstruct run-id init-proc)
(let* ((dbname (dbfile:run-id->dbname run-id))
(areapath (dbr:dbstruct-areapath dbstruct))
(tmppath (dbr:dbstruct-tmppath dbstruct))
(mtdbpath (dbfile:run-id->path areapath run-id))
(tmpdbpath (dbfile:run-id->path tmppath run-id))
(mtdbdat (dbfile:open-sqlite3-db mtdbpath init-proc))
(tmpdbdat (dbfile:open-sqlite3-db tmpdbpath init-proc)) ;; push this on the stack
(newsubdb (make-dbr:subdb dbname: dbname
mtdbfile: mtdbpath
tmpdbfile: tmpdbpath
mtdbdat: mtdbdat)))
(dbfile:add-dbdat dbstruct run-id tmpdbdat)
(dbfile:set-subdb dbstruct run-id newsubdb)
newsubdb)) ;; return the new subdb - but shouldn't really use it
;; returns the dbstruct with needed data populated
(let* ((dbname (db:run-id->dbname run-id))
(begin
(areapath (dbr:dbstruct-areapath dbstruct))
(tmppath (dbr:dbstruct-tmppath dbstruct))
(mtdbpath (db:run-id->path areapath run-id))
(tmpdbpath (db:run-id->path tmppath run-id))
(mtdbdat (dbfile:open-sqlite3-db mtdbpath init-proc))
(tmpdbdat (dbfile:open-sqlite3-db tmpdbpath init-proc)) ;; push this on the stack
(newsubdb (make-dbr:subdb dbname: dbname
mtdbfile: mtdbpath
tmpdbfile: tmpdbpath
mtdbdat: mtdbdat)))
(dbfile:add-dbdat dbstruct run-id tmpdbdat)
(dbfile:set-subdb dbstruct run-id newsubdb)
(tmpdbpath (db:run-id->path tmppath run-id)))
(tmpdbpath (dbfile:run-id->path tmppath run-id)))
(dbfile:open-sqlite3-db tmpdbpath init-proc)))))))
;; COMBINE dbfile:open-sqlite-db and dbfile:lock-create-open
;;
;; Open the classic megatest.db file (defaults to open in toppath)
;;
;; NOTE: returns a dbdat not a dbstruct!
;;
(define (dbfile:open-sqlite-db dbpath init-proc)
(define (dbfile:open-sqlite3-db dbpath init-proc)
(let* ((dbexists (file-exists? dbpath))
(db ;; need locking here so multiple open
;; do not collide
(let* ((db (sqlite3:open-database dbpath)))
(init-proc db))
(db (dbfile:lock-create-open dbpath
#;(dbfile:lock-create-open dbpath
(lambda (db)
(db:initialize-main-db db))))
(init-proc db))))
(write-access (file-write-access? dbpath)))
(dbfile:print-err "db:open-megatest-db "dbpath)
(if (and dbexists (not write-access))
(dbfile:print-err "db:open-sqlite-db "dbpath)
#;(if (and dbexists (not write-access))
(set! *db-write-access* #f))
;; (cons db dbpath)))
(make-dbr:dbdat dbfile: dbpath dbh: db read-only: (not write-access))))
(define (dbfile:print-and-exit . params)
(with-output-to-port
(current-error-port)
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;; open an sql database inside a file lock
;; returns: db existed-prior-to-opening
;; RA => Returns a db handler; sets the lock if opened in writable mode
;;
;; (define *db-open-mutex* (make-mutex))
;;
(define (dbfile:lock-create-open fname initproc)
#;(define (dbfile:lock-create-open fname initproc)
(let* ((parent-dir (or (pathname-directory fname)(current-directory))) ;; no parent? go local
(raw-fname (pathname-file fname))
(dir-writable (file-write-access? parent-dir))
(file-exists (file-exists? fname))
(file-write (if file-exists
(file-write-access? fname)
dir-writable )))
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(dbfile:print-and-exit
"ERROR: Unknown error with database " fname " message: " ((condition-property-accessor 'exn 'message) exn))))
)))
;; This routine creates the db if not already present. It is only called if the db is not already opened
;;
(define (db:init-dbstruct dbstruct run-id init-proc #!key (do-sync #t))
#;(define (db:init-dbstruct dbstruct run-id init-proc #!key (do-sync #t))
(let* ((subdb (dbfile:get-subdb dbstruct run-id))
(tmpdb-stack (dbr:subdb-dbstack subdb))
(max-stale-tmp (dbr:dbstruct-max-stale-secs dbstruct));; (configf:lookup-number *configdat* "server" "filling-db-max-stale-seconds" default: 10))
(dbpath (dbr:dbstruct-tmppath dbstruct)) ;; (db:dbfile-path)) ;; path to tmp db area
(dbname (db:run-id->dbname run-id))
(dbname (dbfile:run-id->dbname run-id))
(dbexists (file-exists? dbpath))
(areapath (dbr:dbstruct-areapath dbstruct))
(mtdbfname (conc areapath "/"dbname))
(mtdbexists (file-exists? mtdbfname))
(mtdbmodtime (if mtdbexists (dbfile:lazy-sqlite-db-modification-time mtdbfname) #f))
(mtdb (db:open-sqlite-db mtdbfname init-proc))
;; the reference db for syncing
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