63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
-
+
-
+
-
+
|
(conc (dbmod:get-dbdir dbstruct
run-id
)"/"(dbmod:run-id->dbfname run-id)))
;;======================================================================
;; Read-only inmem cached direct from disk method
;; Read-only cachedb cached direct from disk method
;;======================================================================
(define *dbmod:nfs-db-handles* (make-hash-table)) ;; dbfname -> dbstruct
;; called in rmt.scm nfs-transport-handler
(define (dbmod:nfs-get-dbstruct run-id keys init-proc areapath)
(assert areapath "FATAL: dbmod:nfs-get-dbstruct called without areapath set.")
(let* ((dbfname (dbmod:run-id->dbfname run-id))
(dbstruct (hash-table-ref/default *dbmod:nfs-db-handles* dbfname #f)))
(if dbstruct
dbstruct
(let* ((newdbstruct (dbmod:open-dbmoddb areapath run-id dbfname init-proc keys syncdir: 'fromdisk)))
(hash-table-set! *dbmod:nfs-db-handles* dbfname newdbstruct)
newdbstruct))))
;;======================================================================
;; The inmem one-db file per server method goes in here
;; The cachedb one-db file per server method goes in here
;;======================================================================
;; NOTE: the r/w is now w/r, #t=db modified by query, #f=db NOT modified by query
(define (dbmod:with-db dbstruct run-id w/r proc params)
(let* ((use-mutex (or (and w/r ;; use the mutex on queries that modify the db and for sync to disk
(> *api-process-request-count* 5)) ;; when writes are happening throttle more
(> *api-process-request-count* 50)))
(dbdat (dbmod:open-db dbstruct run-id (dbfile:db-init-proc)))
(dbh (dbr:dbdat-dbh dbdat)) ;; this will be the inmem handle
(dbh (dbr:dbdat-dbh dbdat)) ;; this will be the cachedb handle
(dbfile (dbr:dbdat-dbfile dbdat)))
;; if nfs mode do a sync if delta > 2
(let* ((last-update (dbr:dbstruct-last-update dbstruct))
(sync-proc (dbr:dbstruct-sync-proc dbstruct))
(curr-secs (current-seconds)))
(if (and (not (eq? (dbfile:cache-method) 'none)) ;; used by dashboard, no need for sync
(> (- curr-secs last-update) 5))
|
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
+
-
+
-
+
-
+
|
(let* ((res (apply proc dbdat dbh params)))
(if use-mutex (mutex-unlock! *db-with-db-mutex*))
res)))
(define (db:with-db dbstruct run-id w/r proc . params)
(dbmod:with-db dbstruct run-id w/r proc params))
;;
(define (dbmod:open-inmem-db init-proc #!optional (dbfullname #f))
(define (dbmod:open-cachedb-db init-proc dbfullname)
(let* ((db (if dbfullname
(dbmod:safely-open-db dbfullname init-proc #t)
(sqlite3:open-database ":memory:")))
(handler (sqlite3:make-busy-timeout 3600)))
(sqlite3:set-busy-handler! db handler)
(init-proc db)
db))
(define (dbmod:open-db dbstruct run-id dbinit)
(or (dbr:dbstruct-dbdat dbstruct)
(let* ((dbdat (make-dbr:dbdat
dbfile: (dbr:dbstruct-dbfile dbstruct)
dbh: (dbr:dbstruct-inmem dbstruct)
dbh: (dbr:dbstruct-cachedb dbstruct)
)))
(dbr:dbstruct-dbdat-set! dbstruct dbdat)
dbdat)))
;; NOT USED?
(define (dbmod:need-on-disk-db-handle)
(case (dbfile:cache-method)
((none tmp) #t)
((inmem)
((cachedb)
(case (dbfile:sync-method)
((original) #t)
((attach) #t) ;; we need it to force creation of the on-disk file - FIXME
(else
(debug:print 0 *default-log-port* "Unknown dbfile:sync-method setting: "
(dbfile:sync-method)))))
(else
|
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
-
-
+
+
|
(sqlite3:set-busy-handler! db handler)
(if write-access
(init-proc db))
db))))
(define *sync-in-progress* #f)
;; Open the inmem db and the on-disk db
;; populate the inmem db with data
;; Open the cachedb db and the on-disk db
;; populate the cachedb db with data
;;
;; Updates fields in dbstruct
;; Returns dbstruct
;;
;; * This routine creates the db if not found
;; * Probably can get rid of the dbstruct-in
;;
|
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
-
-
+
+
-
+
-
+
-
+
-
-
+
+
-
+
-
+
-
-
+
+
-
-
-
+
+
+
-
+
-
+
-
+
-
+
|
(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)
(cachedb (dbmod:open-cachedb-db init-proc
;; (if (eq? (dbfile:cache-method) 'cachedb)
;; #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)
(if (not (and (sqlite3:database? cachedb)
(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")
(exit))) ;; (assert (sqlite3:database? cachedb) "FATAL: open-dbmoddb: cachedb is not a db")
;; (assert (sqlite3:database? db) "FATAL: open-dbmoddb: db is not a db")
(dbr:dbstruct-inmem-set! dbstruct inmem)
(dbr:dbstruct-cachedb-set! dbstruct cachedb)
(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")
(let* ((sync-cmd (conc "megatest -db2db -from "tmpdb" -to "dbfullname"&"))
(synclock-file (conc dbfullname".sync-lock")))
;; (mutex-lock! *db-with-db-mutex*) ;; this mutex is used when overloaded or during a query that modifies the db
;; (if (eq? (dbfile:cache-method) 'inmem)
;; (dbmod:sync-gasket tables last-update inmem db
;; (if (eq? (dbfile:cache-method) 'cachedb)
;; (dbmod:sync-gasket tables last-update cachedb db
;; dbfullname syncdir keys)
(if (< (file-modification-time tmpdb)
(file-modification-time dbfullname))
(debug:print 0 *default-log-port* "Skipping sync, "tmpdb" older than "dbfullname)
(if (file-exists? synclock-file)
(debug:print 0 *default-log-port* "Skipping sync, lockfile "synclock-file" found.")
(thread-start! (make-thread
(lambda ()
(set! *sync-in-progress* #t)
(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)
;; (dbmod:sync-tables tables #f db cachedb)
;; (if db
(dbmod:sync-gasket tables #f inmem db dbfullname 'fromdest keys) ;; ) ;; load into inmem
(dbmod:sync-gasket tables #f cachedb db dbfullname 'fromdest keys) ;; ) ;; load into cachedb
(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))))
;; (dbmod:sync-tables tables last-update cachedb db)
;; (dbmod:sync-tables tables last-update db cachedb))))
;;
;; 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")
(define (dbmod:sync-gasket tables last-update cachedb dbh dbfname direction keys)
(assert (sqlite3:database? cachedb) "FATAL: sync-gasket: cachedb is not a db")
(assert (sqlite3:database? cachedb) "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))
(dbmod:attach-sync tables cachedb dbfname direction))
((newsync)
(dbmod:new-sync tables inmem dbh dbfname direction))
(dbmod:new-sync tables cachedb dbh dbfname direction))
(else
(case direction
((todisk) ;; i.e. from the cache db to the mtrah db
(dbmod:sync-tables tables last-update keys inmem dbh))
(dbmod:sync-tables tables last-update keys cachedb dbh))
(else
(dbmod:sync-tables tables last-update keys dbh inmem))))))
(dbmod:sync-tables tables last-update keys dbh cachedb))))))
(define (dbmod:close-db dbstruct)
;; do final sync to disk file
;; (do-sync ...)
(sqlite3:finalize! (dbr:dbstruct-ondiskdb dbstruct)))
;;======================================================================
|