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;;======================================================================
;; Database access
;;======================================================================
;; dbstruct vector containing all the relevant dbs like main.db, megatest.db, run.db etc
(require-extension (srfi 18) extras tcp) ;; RADT => use of require-extension?
(use sqlite3 srfi-1 posix regex regex-case srfi-69 csv-xml s11n md5 message-digest base64 format dot-locking z3)
(use sqlite3 srfi-1 posix regex regex-case srfi-69 csv-xml s11n md5 message-digest base64 format dot-locking z3 typed-records)
(import (prefix sqlite3 sqlite3:))
(import (prefix base64 base64:)) ;; RADT => prefix??
(declare (unit db))
(declare (uses common))
(declare (uses keys))
(declare (uses ods))
(declare (uses client))
(declare (uses mt))
(include "common_records.scm")
(include "db_records.scm")
(include "key_records.scm")
(include "run_records.scm")
(define *rundb-mutex* (make-mutex)) ;; prevent problems opening/closing rundb's
(define *number-of-writes* 0)
(define *number-non-write-queries* 0)
;;======================================================================
;; R E C O R D S
;;======================================================================
(defstruct dbr:dbstruct
main
strdb
((path #f) : string)
((local #f) : boolean)
rundb
inmem
mtime
rtime
stime
inuse
refdb
((locdbs (make-hash-table)) : hash-table)
olddb)
;;======================================================================
;; SQLITE3 HELPERS
;;======================================================================
(define (db:general-sqlite-error-dump exn stmt . params)
(let ((err-status ((condition-property-accessor 'sqlite3 'status #f) exn))) ;; RADT ... how does this work?
;; check for (exn sqlite3) ((condition-property-accessor 'exn 'message) exn)
(print "err-status: " err-status)
(debug:print-error 0 *default-log-port* " query " stmt " failed, params: " params ", error: " ((condition-property-accessor 'exn 'message) exn))
(print-call-chain (current-error-port))))
;; convert to -inline RADT => how inline?
;; convert to -inline
;;
(define (db:first-result-default db stmt default . params)
(handle-exceptions
exn
(let ((err-status ((condition-property-accessor 'sqlite3 'status #f) exn)))
;; check for (exn sqlite3) ((condition-property-accessor 'exn 'message) exn)
(if (eq? err-status 'done)
default
(begin
(debug:print-error 0 *default-log-port* " query " stmt " failed, params: " params ", error: " ((condition-property-accessor 'exn 'message) exn))
(print-call-chain (current-error-port))
default)))
(apply sqlite3:first-result db stmt params)))
;; Get/open a database
;; if run-id => get run specific db
;; if #f => get main db
;; 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 (db:get-db dbstruct run-id) ;; RADT => Where is dbstruct defined?
(define (db:get-db dbstruct run-id)
(if (sqlite3:database? dbstruct) ;; pass sqlite3 databases on through
dbstruct
(begin
(let ((dbdat (if (or (not run-id)
(eq? run-id 0))
(db:open-main dbstruct)
(db:open-rundb dbstruct run-id)
)))
dbdat))))
;;RADT => Purpose of dbdat?
;; legacy handling of structure for managing db's. Refactor this into dbr:?
;;
(define (db:dbdat-get-db dbdat)
(if (pair? dbdat)
(car dbdat)
dbdat))
(define (db:dbdat-get-path dbdat)
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;; Locks the mutex and depending on 'mod or 'read passed, sets the last timestamp in dbstruct
;;
(define (db:done-with dbstruct run-id mod-read)
(if (not (sqlite3:database? dbstruct))
(begin
(mutex-lock! *rundb-mutex*)
(if (eq? mod-read 'mod)
(dbr:dbstruct-set-mtime! dbstruct (current-milliseconds))
(dbr:dbstruct-set-rtime! dbstruct (current-milliseconds)))
(dbr:dbstruct-set-inuse! dbstruct #f)
(dbr:dbstruct-mtime-set! dbstruct (current-milliseconds))
(dbr:dbstruct-rtime-set! dbstruct (current-milliseconds)))
(dbr:dbstruct-inuse-set! dbstruct #f)
(mutex-unlock! *rundb-mutex*))))
;; (db:with-db dbstruct run-id sqlite3:exec "select blah from blaz;")
;; r/w is a flag to indicate if the db is modified by this query #t = yes, #f = no
;;
(define (db:with-db dbstruct run-id r/w proc . params)
(let* ((dbdat (if (vector? dbstruct)
(let* ((dbdat (if (dbr:dbstruct? dbstruct)
(db:get-db dbstruct run-id)
dbstruct)) ;; cheat, allow for passing in a dbdat
(db (db:dbdat-get-db dbdat))) ;;RADT => dbdat should already be a database, why need this function
(db (db:dbdat-get-db dbdat)))
(db:delay-if-busy dbdat)
(if (vector? dbstruct)(db:done-with dbstruct run-id r/w)) ;; RA => Mark timestamp on defstruct RADT => How come 'mod not passed instead of r/w
(if (vector? dbstruct)(db:done-with dbstruct run-id r/w))
res))))
;;======================================================================
;; K E E P F I L E D B I N dbstruct
;;======================================================================
;; (define (db:get-filedb dbstruct run-id)
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;; ;;
;; (define (db:get-path dbstruct id)
;; (let ((fdb (db:get-filedb dbstruct)))
;; (filedb:get-path db id)))
;; NB// #f => return dbdir only
;; (was planned to be; zeroth db with name=main.db)
;;
;; If run-id is #f return to create and retrieve the path where the db will live.
;;
(define (db:dbfile-path run-id)
(let* ((dbdir (db:get-dbdir))
(fname (if run-id
(if (eq? run-id 0) "main.db" (conc run-id ".db")) ;;main.db is assigned if run-id 0; does it mean main.db same as 1.db???
(if (eq? run-id 0) "main.db" (conc run-id ".db"))
#f)))
(handle-exceptions
exn
(begin
(debug:print-error 0 *default-log-port* "Couldn't create path to " dbdir)
(exit 1))
(if (not (directory? dbdir))(create-directory dbdir #t)))
(if fname
(conc dbdir "/" fname) ;;RADT => why not creating fname db if does not exist here
(conc dbdir "/" fname)
dbdir)))
;; Returns the database location as specified in config file
;;
(define (db:get-dbdir)
(or (configf:lookup *configdat* "setup" "dbdir")
(conc (configf:lookup *configdat* "setup" "linktree") "/.db")))
(define (db:set-sync db)
(let ((syncprag (configf:lookup *configdat* "setup" "sychronous")))
(sqlite3:execute db (conc "PRAGMA synchronous = " (or syncprag 1) ";")))) ;; RADT => advantage of PRAGMA here??
(sqlite3:execute db (conc "PRAGMA synchronous = " (or syncprag 1) ";"))))
;; 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:lock-create-open fname initproc)
;; (if (file-exists? fname)
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(begin
(debug:print 2 *default-log-port* "WARNING: opening db in non-writable dir " fname)
(sqlite3:open-database fname))))) ;; )
;; This routine creates the db. It is only called if the db is not already opened
;;
(define (db:open-rundb dbstruct run-id #!key (attemptnum 0)(do-not-open #f)) ;; (conc *toppath* "/megatest.db") (car *configinfo*)))
(let* ((local (dbr:dbstruct-get-local dbstruct))
(let* ((local (dbr:dbstruct-local dbstruct))
(rdb (if local
(dbr:dbstruct-get-localdb dbstruct run-id)
(dbr:dbstruct-get-inmem dbstruct)))) ;; (dbr:dbstruct-get-runrec dbstruct run-id 'inmem)))
(dbr:dbstruct-localdb dbstruct run-id)
(dbr:dbstruct-inmem dbstruct)))) ;; (dbr:dbstruct-runrec dbstruct run-id 'inmem)))
(if (or rdb
do-not-open)
rdb
(begin
(mutex-lock! *rundb-mutex*)
(let* ((dbpath (db:dbfile-path run-id)) ;; (conc toppath "/db/" run-id ".db"))
(dbexists (file-exists? dbpath))
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(set! *megatest-db* db)
db)))
(write-access (file-write-access? dbpath))
;; (handler (make-busy-timeout 136000))
)
(if (and dbexists (not write-access))
(set! *db-write-access* #f)) ;; only unset so other db's also can use this control
(dbr:dbstruct-set-rundb! dbstruct (cons db dbpath))
(dbr:dbstruct-set-inuse! dbstruct #t)
(dbr:dbstruct-set-olddb! dbstruct olddb)
;; (dbr:dbstruct-set-run-id! dbstruct run-id)
(dbr:dbstruct-rundb-set! dbstruct (cons db dbpath))
(dbr:dbstruct-inuse-set! dbstruct #t)
(dbr:dbstruct-olddb-set! dbstruct olddb)
;; (dbr:dbstruct-run-id-set! dbstruct run-id)
(mutex-unlock! *rundb-mutex*)
(if local
(begin
(dbr:dbstruct-set-localdb! dbstruct run-id db) ;; (dbr:dbstruct-set-inmem! dbstruct db) ;; direct access ...
(dbr:dbstruct-localdb-set! dbstruct run-id db) ;; (dbr:dbstruct-inmem-set! dbstruct db) ;; direct access ...
db)
(begin
(dbr:dbstruct-set-inmem! dbstruct inmem)
(dbr:dbstruct-inmem-set! dbstruct inmem)
;; dec 14, 2014 - keep deleted records available. hunch is that they are needed for id placeholders
;; (sqlite3:execute db "DELETE FROM tests WHERE state='DELETED';") ;; they just slow us down in this context
(db:sync-tables db:sync-tests-only db inmem)
(db:delay-if-busy refdb) ;; dbpath: (db:dbdat-get-path refdb)) ;; What does delaying here achieve?
(dbr:dbstruct-set-refdb! dbstruct refdb)
(dbr:dbstruct-refdb-set! dbstruct refdb)
(db:sync-tables db:sync-tests-only inmem refdb) ;; use inmem as the reference, don't read again from db
;; sync once more to deal with delays?
;; (db:sync-tables db:sync-tests-only db inmem)
;; (db:sync-tables db:sync-tests-only inmem refdb)
inmem)))))))
;; This routine creates the db if not already present. It is only called if the db is not already ls opened
;;
(define (db:open-main dbstruct) ;; (conc *toppath* "/megatest.db") (car *configinfo*)))
(let ((mdb (dbr:dbstruct-get-main dbstruct))) ;; RA => Returns the first reference in dbstruct
(let ((mdb (dbr:dbstruct-main dbstruct))) ;; RA => Returns the first reference in dbstruct
(if mdb
mdb
(begin
(mutex-lock! *rundb-mutex*)
(let* ((dbpath (db:dbfile-path 0))
(dbexists (file-exists? dbpath))
(db (db:lock-create-open dbpath db:initialize-main-db))
(olddb (db:open-megatest-db))
(write-access (file-write-access? dbpath))
(dbdat (cons db dbpath)))
(if (and dbexists (not write-access))
(set! *db-write-access* #f))
(dbr:dbstruct-set-main! dbstruct dbdat)
(dbr:dbstruct-set-olddb! dbstruct olddb) ;; olddb is already a (cons db path)
(dbr:dbstruct-main-set! dbstruct dbdat)
(dbr:dbstruct-olddb-set! dbstruct olddb) ;; olddb is already a (cons db path)
(mutex-unlock! *rundb-mutex*)
(if (and (not dbexists)
*db-write-access*) ;; did not have a prior db and do have write access
(db:multi-db-sync #f 'old2new)) ;; migrate data from megatest.db automatically
dbdat)))))
;; Make the dbstruct, setup up auxillary db's and call for main db at least once
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(if (and dbexists (not write-access))
(set! *db-write-access* #f))
(cons db dbpath)))
;; sync run to disk if touched
;;
(define (db:sync-touched dbstruct run-id #!key (force-sync #f))
(let ((mtime (dbr:dbstruct-get-mtime dbstruct))
(stime (dbr:dbstruct-get-stime dbstruct))
(rundb (dbr:dbstruct-get-rundb dbstruct))
(inmem (dbr:dbstruct-get-inmem dbstruct))
(maindb (dbr:dbstruct-get-main dbstruct))
(refdb (dbr:dbstruct-get-refdb dbstruct))
(olddb (dbr:dbstruct-get-olddb dbstruct))
;; (runid (dbr:dbstruct-get-run-id dbstruct))
(let ((mtime (dbr:dbstruct-mtime dbstruct))
(stime (dbr:dbstruct-stime dbstruct))
(rundb (dbr:dbstruct-rundb dbstruct))
(inmem (dbr:dbstruct-inmem dbstruct))
(maindb (dbr:dbstruct-main dbstruct))
(refdb (dbr:dbstruct-refdb dbstruct))
(olddb (dbr:dbstruct-olddb dbstruct))
;; (runid (dbr:dbstruct-run-id dbstruct))
)
(debug:print-info 4 *default-log-port* "Syncing for run-id: " run-id)
;; (mutex-lock! *http-mutex*)
(if (eq? run-id 0)
;; runid equal to 0 is main.db
(if maindb
(if (or (not (number? mtime))
(not (number? stime))
(> mtime stime)
force-sync)
(begin
(db:delay-if-busy maindb)
(db:delay-if-busy olddb)
(let ((num-synced (db:sync-tables (db:sync-main-list maindb) maindb olddb)))
(dbr:dbstruct-set-stime! dbstruct (current-milliseconds))
(dbr:dbstruct-stime-set! dbstruct (current-milliseconds))
num-synced)
0))
(begin
;; this can occur when using local access (i.e. not in a server)
;; need a flag to turn it off.
;;
(debug:print 3 *default-log-port* "WARNING: call to sync main.db to megatest.db but main not initialized")
0))
;; any other runid is a run
(if (or (not (number? mtime))
(not (number? stime))
(> mtime stime)
force-sync)
(begin
(db:delay-if-busy rundb)
(db:delay-if-busy olddb)
(dbr:dbstruct-set-stime! dbstruct (current-milliseconds))
(dbr:dbstruct-stime-set! dbstruct (current-milliseconds))
(let ((num-synced (db:sync-tables db:sync-tests-only inmem refdb rundb olddb)))
;; (mutex-unlock! *http-mutex*)
num-synced)
(begin
;; (mutex-unlock! *http-mutex*)
0))))))
(define (db:close-main dbstruct)
(let ((maindb (dbr:dbstruct-get-main dbstruct)))
(let ((maindb (dbr:dbstruct-main dbstruct)))
(if maindb
(begin
(sqlite3:finalize! (db:dbdat-get-db maindb))
(dbr:dbstruct-set-main! dbstruct #f)))))
(dbr:dbstruct-main-set! dbstruct #f)))))
(define (db:close-run-db dbstruct run-id)
(let ((rdb (db:open-rundb dbstruct run-id do-not-open: #t)))
(if (and rdb
(sqlite3:database? rdb))
(begin
(sqlite3:finalize! rdb)
(dbr:dbstruct-set-localdb! dbstruct run-id #f)
(dbr:dbstruct-set-inmem! dbstruct #f)))))
(dbr:dbstruct-localdb-set! dbstruct run-id #f)
(dbr:dbstruct-inmem-set! dbstruct #f)))))
;; close all opened run-id dbs
(define (db:close-all dbstruct)
;; finalize main.db
(db:sync-touched dbstruct 0 force-sync: #t)
;;(common:db-block-further-queries)
;; (mutex-lock! *db-sync-mutex*) ;; with this perhaps it isn't necessary to use the block-further-queries mechanism?
(db:close-main dbstruct)
(let ((locdbs (dbr:dbstruct-get-locdbs dbstruct)))
(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)))))
(define (db:open-inmem-db)
(let* ((db (sqlite3:open-database ":memory:"))
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(for-each
(lambda (run-id)
(db:delay-if-busy mtdb)
(let ((testrecs (db:get-all-tests-info-by-run-id mtdb run-id))
(dbstruct (if toppath (make-dbr:dbstruct path: toppath local: #t) #f)))
(debug:print 0 *default-log-port* "INFO: Propagating " (length testrecs) " records for run-id=" run-id " to run specific db")
(db:replace-test-records dbstruct run-id testrecs)
(sqlite3:finalize! (db:dbdat-get-db (dbr:dbstruct-get-rundb dbstruct)))))
(sqlite3:finalize! (db:dbdat-get-db (dbr:dbstruct-rundb dbstruct)))))
run-ids)))
;; now ensure all newdb data are synced to megatest.db
;; do not use the run-ids list passed in to the function
;;
(if (member 'new2old options)
(let* ((maindb (make-dbr:dbstruct path: toppath local: #t))
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3397
3398
3399
3400
3401
3402
3403
3404
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+
-
+
|
(hash-table-set! tests-hash full-testname testdat))))
results)
(if (null? tal)
(map cdr (hash-table->alist tests-hash)) ;; return a list of the most recent tests
(loop (car tal)(cdr tal))))))))))
;; Function recursively checks if <db>.journal exists; if yes means db busy; call itself after delayed interval
;; return the sqlite3 db handle if possible
;;
(define (db:delay-if-busy dbdat #!key (count 6))
(if (not (configf:lookup *configdat* "server" "delay-on-busy")) ;;RADT => two conditions in a if block?? also understand what config looked up
(and dbdat (db:dbdat-get-db dbdat))
(if dbdat
(let* ((dbpath (db:dbdat-get-path dbdat))
(db (db:dbdat-get-db dbdat)) ;; we'll return this so (db:delay--if-busy can be called inline
(dbfj (conc dbpath "-journal")))
(if (handle-exceptions
exn
(begin
(debug:print-info 0 *default-log-port* "WARNING: failed to test for existance of " dbfj)
(thread-sleep! 1)
(db:delay-if-busy count (- count 1))) ;; RADT => Don't we need to sent a dbstruct here?
(db:delay-if-busy count (- count 1)))
(file-exists? dbfj))
(case count
((6)
(thread-sleep! 0.2)
(db:delay-if-busy count: 5))
((5)
(thread-sleep! 0.4)
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