summaryrefslogtreecommitdiffstats
path: root/libglusterfs/src/gfdb/gfdb_sqlite3.c
blob: 349ff60f54112b141f1e5b1641cc581d829cfa1b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
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
104
105
106
107
108
109
110
111
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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
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
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
/*
   Copyright (c) 2015 Red Hat, Inc. <http://www.redhat.com>
   This file is part of GlusterFS.

   This file is licensed to you under your choice of the GNU Lesser
   General Public License, version 3 or any later version (LGPLv3 or
   later), or the GNU General Public License, version 2 (GPLv2), in all
   cases as published by the Free Software Foundation.
*/

#include "gfdb_sqlite3.h"
#include "gfdb_sqlite3_helper.h"
#include "libglusterfs-messages.h"

/******************************************************************************
 *
 *                      Util functions
 *
 * ***************************************************************************/
inline gf_sql_connection_t *
gf_sql_connection_init ()
{
        gf_sql_connection_t *gf_sql_conn = NULL;

        gf_sql_conn = GF_CALLOC (1, sizeof(gf_sql_connection_t),
                        gf_mt_sql_connection_t);
        if (gf_sql_conn == NULL) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, ENOMEM,
                        LG_MSG_NO_MEMORY, "Error allocating memory to "
                        "gf_sql_connection_t ");
        }

        return gf_sql_conn;
}

inline void
gf_sql_connection_fini (gf_sql_connection_t **sql_connection)
{
        if (!sql_connection)
                return;
        GF_FREE (*sql_connection);
        *sql_connection = NULL;
}

inline const char *
gf_sql_jm2str (gf_sql_journal_mode_t jm)
{
        switch (jm) {
        case gf_sql_jm_delete:
                return GF_SQL_JM_DELETE;
        case gf_sql_jm_truncate:
                return GF_SQL_JM_TRUNCATE;
        case gf_sql_jm_persist:
                return GF_SQL_JM_PERSIST;
        case gf_sql_jm_memory:
                return GF_SQL_JM_MEMORY;
        case gf_sql_jm_wal:
                return GF_SQL_JM_WAL;
        case gf_sql_jm_off:
                return GF_SQL_JM_OFF;
        case gf_sql_jm_invalid:
                break;
        }
        return NULL;
}

inline gf_sql_journal_mode_t
gf_sql_str2jm (const char *jm_str)
{
        if (!jm_str) {
                return gf_sql_jm_invalid;
        } else if (strcmp(jm_str, GF_SQL_JM_DELETE) == 0) {
                return gf_sql_jm_delete;
        } else if (strcmp(jm_str, GF_SQL_JM_TRUNCATE) == 0) {
                return gf_sql_jm_truncate;
        } else if (strcmp(jm_str, GF_SQL_JM_PERSIST) == 0) {
                return gf_sql_jm_persist;
        } else if (strcmp(jm_str, GF_SQL_JM_MEMORY) == 0) {
                return gf_sql_jm_memory;
        } else if (strcmp(jm_str, GF_SQL_JM_WAL) == 0) {
                return gf_sql_jm_wal;
        } else if (strcmp(jm_str, GF_SQL_JM_OFF) == 0) {
                return gf_sql_jm_off;
        }
        return gf_sql_jm_invalid;
}

inline const char *
gf_sql_av_t2str (gf_sql_auto_vacuum_t sql_av)
{
        switch (sql_av) {
        case gf_sql_av_none:
                return GF_SQL_AV_NONE;
        case gf_sql_av_full:
                return GF_SQL_AV_FULL;
        case gf_sql_av_incr:
                return GF_SQL_AV_INCR;
        case gf_sql_av_invalid:
                break;
        }
        return NULL;
}

inline gf_sql_auto_vacuum_t
gf_sql_str2av_t (const char *av_str)
{
        if (!av_str) {
                return gf_sql_sync_invalid;
        } else if (strcmp(av_str, GF_SQL_AV_NONE) == 0) {
                return gf_sql_av_none;
        } else if (strcmp(av_str, GF_SQL_AV_FULL) == 0) {
                return gf_sql_av_full;
        } else if (strcmp(av_str, GF_SQL_AV_INCR) == 0) {
                return gf_sql_av_incr;
        }
        return gf_sql_sync_invalid;
}

inline const char *
gf_sync_t2str (gf_sql_sync_t sql_sync)
{
        switch (sql_sync) {
        case gf_sql_sync_off:
                return GF_SQL_SYNC_OFF;
        case gf_sql_sync_normal:
                return GF_SQL_SYNC_NORMAL;
        case gf_sql_sync_full:
                return GF_SQL_SYNC_FULL;
        case gf_sql_sync_invalid:
                break;
        }
        return NULL;
}

inline gf_sql_sync_t
gf_sql_str2sync_t (const char *sync_str)
{
        if (!sync_str) {
                return gf_sql_sync_invalid;
        } else if (strcmp(sync_str, GF_SQL_SYNC_OFF) == 0) {
                return gf_sql_sync_off;
        } else if (strcmp(sync_str, GF_SQL_SYNC_NORMAL) == 0) {
                return gf_sql_sync_normal;
        } else if (strcmp(sync_str, GF_SQL_SYNC_FULL) == 0) {
                return gf_sql_sync_full;
        }
        return gf_sql_sync_invalid;
}


/*TODO replace GF_CALLOC by mem_pool or iobuff if required for performace */
static inline char *
sql_stmt_init ()
{
        char *sql_stmt = NULL;

        sql_stmt = GF_CALLOC (GF_STMT_SIZE_MAX, sizeof(char),
                        gf_common_mt_char);

        if (!sql_stmt) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, ENOMEM,
                        LG_MSG_NO_MEMORY, "Error allocating memory to SQL "
                        "Statement ");
                goto out;
        }
out:
        return sql_stmt;
}

/*TODO replace GF_FREE by mem_pool or iobuff if required for performace */
static inline void
sql_stmt_fini (char **sql_stmt)
{
        GF_FREE (*sql_stmt);
}

/******************************************************************************
 *                      DB Essential functions used by
 *                      > gf_open_sqlite3_conn ()
 *                      > gf_close_sqlite3_conn ()
 * ***************************************************************************/
static sqlite3 *
gf_open_sqlite3_conn(char *sqlite3_db_path, int flags)
{
        sqlite3 *sqlite3_db_conn = NULL;
        int ret = -1;

        GF_ASSERT (sqlite3_db_path);

        /*Creates DB if not created*/
        ret = sqlite3_open_v2(sqlite3_db_path, &sqlite3_db_conn, flags, NULL);
        if (ret) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_DB_ERROR,
                        "FATAL: Could open %s : %s",
                        sqlite3_db_path, sqlite3_errmsg(sqlite3_db_conn));
        }
        return sqlite3_db_conn;
}

static int
gf_close_sqlite3_conn(sqlite3 *sqlite3_db_conn)
{
        int ret = 0;

        GF_ASSERT (sqlite3_db_conn);

        if (sqlite3_db_conn) {
                ret = sqlite3_close (sqlite3_db_conn);
                if (ret != SQLITE_OK) {
                        gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                                LG_MSG_CONNECTION_ERROR, "FATAL: sqlite3 close"
                                " connection failed %s",
                                sqlite3_errmsg(sqlite3_db_conn));
                        ret = -1;
                        goto out;
                }
        }
        ret = 0;
out:
        return ret;
}

/******************************************************************************
*
*                      Database init / fini / create table
*
* ***************************************************************************/


/*Function to fill db operations*/
void
gf_sqlite3_fill_db_operations(gfdb_db_operations_t  *gfdb_db_ops)
{
        GF_ASSERT (gfdb_db_ops);

        gfdb_db_ops->init_db_op = gf_sqlite3_init;
        gfdb_db_ops->fini_db_op = gf_sqlite3_fini;

        gfdb_db_ops->insert_record_op = gf_sqlite3_insert;
        gfdb_db_ops->delete_record_op = gf_sqlite3_delete;

        gfdb_db_ops->find_all_op = gf_sqlite3_find_all;
        gfdb_db_ops->find_unchanged_for_time_op =
                        gf_sqlite3_find_unchanged_for_time;
        gfdb_db_ops->find_recently_changed_files_op =
                        gf_sqlite3_find_recently_changed_files;
        gfdb_db_ops->find_unchanged_for_time_freq_op =
                        gf_sqlite3_find_unchanged_for_time_freq;
        gfdb_db_ops->find_recently_changed_files_freq_op =
                        gf_sqlite3_find_recently_changed_files_freq;
}


static int
create_filetable (sqlite3 *sqlite3_db_conn)
{
        int ret                         =       -1;
        char *sql_stmt                  =       NULL;
        char *sql_strerror              =       NULL;

        GF_ASSERT(sqlite3_db_conn);

        sql_stmt = sql_stmt_init();
        if (!sql_stmt) {
                ret = ENOMEM;
                goto out;
        }

        GF_CREATE_STMT(sql_stmt);

        ret = sqlite3_exec (sqlite3_db_conn, sql_stmt, NULL, NULL,
                                &sql_strerror);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_EXEC_FAILED,
                        "Failed executing: %s : %s", sql_stmt, sql_strerror);
                sqlite3_free (sql_strerror);
                        ret = -1;
                        goto out;
        }


        ret = 0;
out:
        sql_stmt_fini (&sql_stmt);
        return ret;
}




static inline int
apply_sql_params_db(gf_sql_connection_t *sql_conn, dict_t *param_dict)
{
        int ret = -1;
        char *temp_str = NULL;
        char sqlite3_config_str[PATH_MAX] = "";

        GF_ASSERT(sql_conn);
        GF_ASSERT(param_dict);

        /*Extract sql page_size from param_dict,
         * if not specified default value will be GF_SQL_DEFAULT_PAGE_SIZE*/
        temp_str = NULL;
        GET_DB_PARAM_FROM_DICT_DEFAULT(GFDB_STR_SQLITE3, param_dict,
                        GFDB_SQL_PARAM_PAGE_SIZE, temp_str,
                        GF_SQL_DEFAULT_PAGE_SIZE);
        sql_conn->page_size = atoi(temp_str);
        /*Apply page_size on the sqlite db*/
        GF_SQLITE3_SET_PRAGMA(sqlite3_config_str, "page_size", "%ld",
                        sql_conn->page_size, ret, out);



        /*Extract sql cache size from param_dict,
         * if not specified default value will be
         * GF_SQL_DEFAULT_CACHE_SIZE pages*/
        temp_str = NULL;
        GET_DB_PARAM_FROM_DICT_DEFAULT(GFDB_STR_SQLITE3, param_dict,
                        GFDB_SQL_PARAM_CACHE_SIZE, temp_str,
                        GF_SQL_DEFAULT_CACHE_SIZE);
        sql_conn->cache_size = atoi(temp_str);
        /*Apply cache size on the sqlite db*/
        GF_SQLITE3_SET_PRAGMA(sqlite3_config_str, "cache_size", "%ld",
                        sql_conn->cache_size, ret, out);




        /*Extract sql journal mode from param_dict,
         * if not specified default value will be
         * GF_SQL_DEFAULT_JOURNAL_MODE i.e "wal"*/
        temp_str = NULL;
        GET_DB_PARAM_FROM_DICT_DEFAULT(GFDB_STR_SQLITE3, param_dict,
                        GFDB_SQL_PARAM_JOURNAL_MODE, temp_str,
                        GF_SQL_DEFAULT_JOURNAL_MODE);
        sql_conn->journal_mode = gf_sql_str2jm (temp_str);
        /*Apply journal mode to the sqlite db*/
        GF_SQLITE3_SET_PRAGMA(sqlite3_config_str, "journal_mode", "%s",
                        temp_str, ret, out);



        /*Only when the journal mode is WAL, wal_autocheckpoint makes sense*/
        if (sql_conn->journal_mode == gf_sql_jm_wal) {
                /*Extract sql wal auto check point from param_dict
                * if not specified default value will be
                * GF_SQL_DEFAULT_WAL_AUTOCHECKPOINT pages*/
                temp_str = NULL;
                GET_DB_PARAM_FROM_DICT_DEFAULT(GFDB_STR_SQLITE3, param_dict,
                        GFDB_SQL_PARAM_WAL_AUTOCHECK, temp_str,
                        GF_SQL_DEFAULT_WAL_AUTOCHECKPOINT);
                sql_conn->wal_autocheckpoint = atoi(temp_str);
                /*Apply wal auto check point to the sqlite db*/
                GF_SQLITE3_SET_PRAGMA(sqlite3_config_str, "wal_autocheckpoint",
                        "%ld", sql_conn->wal_autocheckpoint, ret, out);
        }



        /*Extract sql synchronous from param_dict
         * if not specified default value will be GF_SQL_DEFAULT_SYNC*/
         temp_str = NULL;
        GET_DB_PARAM_FROM_DICT_DEFAULT(GFDB_STR_SQLITE3, param_dict,
                        GFDB_SQL_PARAM_SYNC, temp_str, GF_SQL_DEFAULT_SYNC);
        sql_conn->synchronous = gf_sql_str2sync_t (temp_str);
        /*Apply synchronous to the sqlite db*/
        GF_SQLITE3_SET_PRAGMA(sqlite3_config_str, "synchronous", "%d",
                        sql_conn->synchronous, ret, out);



        /*Extract sql auto_vacuum from param_dict
         * if not specified default value will be GF_SQL_DEFAULT_AUTO_VACUUM*/
         temp_str = NULL;
        GET_DB_PARAM_FROM_DICT_DEFAULT(GFDB_STR_SQLITE3, param_dict,
                        GFDB_SQL_PARAM_AUTO_VACUUM, temp_str,
                        GF_SQL_DEFAULT_AUTO_VACUUM);
        sql_conn->auto_vacuum = gf_sql_str2av_t (temp_str);
        /*Apply auto_vacuum to the sqlite db*/
        GF_SQLITE3_SET_PRAGMA(sqlite3_config_str, "auto_vacuum", "%d",
                        sql_conn->auto_vacuum, ret, out);

        ret = 0;
out:
        return ret;
}



int
gf_sqlite3_init (dict_t *args, void **db_conn) {
        int ret                         = -1;
        gf_sql_connection_t *sql_conn   = NULL;
        struct stat stbuf               = {0,};
        gf_boolean_t    is_dbfile_exist = _gf_false;
        char *temp_str                  = NULL;

        GF_ASSERT (args);
        GF_ASSERT (db_conn);

        if (*db_conn != NULL) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_CONNECTION_ERROR, "DB Connection is not "
                        "empty!");
                return 0;
        }

        if (!sqlite3_threadsafe()) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_NOT_MULTITHREAD_MODE,
                        "sqlite3 is not in multithreaded mode");
                goto out;
        }

        sql_conn = gf_sql_connection_init ();
        if (!sql_conn) {
                goto out;
        }

        /*Extract sql db path from args*/
        temp_str = NULL;
        GET_DB_PARAM_FROM_DICT(GFDB_STR_SQLITE3, args,
                        GFDB_SQL_PARAM_DBPATH, temp_str, out);
        strncpy(sql_conn->sqlite3_db_path, temp_str, PATH_MAX-1);
        sql_conn->sqlite3_db_path[PATH_MAX-1] = 0;

        is_dbfile_exist = (stat (sql_conn->sqlite3_db_path, &stbuf) == 0) ?
                                                _gf_true : _gf_false;

        /*Creates DB if not created*/
        sql_conn->sqlite3_db_conn = gf_open_sqlite3_conn (
                                        sql_conn->sqlite3_db_path,
                                        SQLITE_OPEN_READWRITE |
                                        SQLITE_OPEN_CREATE);
        if (!sql_conn->sqlite3_db_conn) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_CONNECTION_ERROR,
                        "Failed creating db connection");
                goto out;
        }

        /* If the file exist we skip the config part
         * and creation of the schema */
        if (is_dbfile_exist)
                goto db_exists;


        /*Apply sqlite3 params to database*/
        ret = apply_sql_params_db(sql_conn, args);
        if (ret) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_SET_PARAM_FAILED, "Failed applying sql params"
                        " to %s", sql_conn->sqlite3_db_path);
                goto out;
        }

        /*Create the schema if NOT present*/
        ret = create_filetable (sql_conn->sqlite3_db_conn);
        if (ret) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_CREATE_FAILED, "Failed Creating %s Table",
                        GF_FILE_TABLE);
               goto out;
        }

db_exists:
        ret = 0;
out:
        if (ret) {
                gf_sqlite3_fini ((void **)&sql_conn);
        }

        *db_conn = sql_conn;

        return ret;
}


int
gf_sqlite3_fini (void **db_conn)
{
        int ret = -1;
        gf_sql_connection_t *sql_conn = NULL;

        GF_ASSERT (db_conn);
        sql_conn = *db_conn;

        if (sql_conn) {
                if (sql_conn->sqlite3_db_conn) {
                        ret = gf_close_sqlite3_conn(sql_conn->sqlite3_db_conn);
                        if (ret) {
                                /*Logging of error done in
                                 * gf_close_sqlite3_conn()*/
                                goto out;
                        }
                        sql_conn->sqlite3_db_conn = NULL;
                }
                gf_sql_connection_fini (&sql_conn);
        }
        *db_conn = sql_conn;
        ret = 0;
out:
        return ret;
}

/******************************************************************************
 *
 *                      INSERT/UPDATE/DELETE Operations
 *
 *
 * ***************************************************************************/

int gf_sqlite3_insert(void *db_conn, gfdb_db_record_t *gfdb_db_record)
{
        int ret                         =       -1;
        gf_sql_connection_t *sql_conn   =       db_conn;

        CHECK_SQL_CONN(sql_conn, out);
        GF_VALIDATE_OR_GOTO(GFDB_STR_SQLITE3, gfdb_db_record, out);


        /*This is for debugging bug. Will be removed with a bug fix*/
        if ((GFDB_FOP_WIND == gfdb_db_record->gfdb_fop_path) &&
            (strncmp(gfdb_db_record->file_path, "<gfid", 5) == 0)) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_SKIP_PATH,
                        "Skip path <gfid fop=%d",
                        gfdb_db_record->gfdb_fop_type);
                goto out;
        }

        switch (gfdb_db_record->gfdb_fop_path) {
        case GFDB_FOP_WIND:
                ret = gf_sql_insert_wind(sql_conn, gfdb_db_record);
                if (ret) {
                        gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                                LG_MSG_INSERT_FAILED, "Failed wind insert");
                        goto out;
                }
                break;
        case GFDB_FOP_UNWIND:
                ret = gf_sql_insert_unwind (sql_conn, gfdb_db_record);
                if (ret) {
                        gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                                LG_MSG_INSERT_FAILED, "Failed unwind insert");
                        goto out;
                }
                break;

        case GFDB_FOP_WDEL:
                ret = gf_sql_update_delete_wind(sql_conn, gfdb_db_record);
                if (ret) {
                        gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                                LG_MSG_UPDATE_FAILED, "Failed updating delete "
                                "during wind");
                        goto out;
                }
                break;
        case GFDB_FOP_UNDEL:
        case GFDB_FOP_UNDEL_ALL:
                ret = gf_sql_delete_unwind(sql_conn, gfdb_db_record);
                if (ret) {
                        gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                                LG_MSG_DELETE_FAILED, "Failed deleting");
                        goto out;
                }
                break;
        case GFDB_FOP_INVALID:
        default:
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_INVALID_FOP,
                        "Cannot record to DB: Invalid FOP");
                goto out;
        }

        ret = 0;
out:
        return ret;
}

int
gf_sqlite3_delete(void *db_conn, gfdb_db_record_t *gfdb_db_record)
{
        int ret = -1;
        gf_sql_connection_t *sql_conn = db_conn;

        CHECK_SQL_CONN(sql_conn, out);
        GF_VALIDATE_OR_GOTO(GFDB_STR_SQLITE3, gfdb_db_record, out);

        ret = 0;
out:
        return ret;
}

/******************************************************************************
 *
 *                      SELECT QUERY FUNCTIONS
 *
 *
 * ***************************************************************************/

/*
 * Find All files recorded in the DB
 * Input:
 *      query_callback  :       query callback fuction to handle
 *                              result records from the query
 * */
int
gf_sqlite3_find_all (void *db_conn, gf_query_callback_t query_callback,
                        void *query_cbk_args)
{
        int ret                                 =       -1;
        char *query_str                         =       NULL;
        gf_sql_connection_t *sql_conn           =       db_conn;
        sqlite3_stmt *prep_stmt                 =       NULL;


        CHECK_SQL_CONN (sql_conn, out);
        GF_VALIDATE_OR_GOTO(GFDB_STR_SQLITE3, query_callback, out);

        query_str = "select GF_FILE_TB.GF_ID,"
                   " (select group_concat( GF_PID || ',' || FNAME || ','"
                   " || FPATH || ',' || W_DEL_FLAG ||',' || LINK_UPDATE , '::')"
                   " from GF_FLINK_TB where "
                   "GF_FILE_TB.GF_ID = GF_FLINK_TB.GF_ID) from GF_FILE_TB ;";


        ret = sqlite3_prepare(sql_conn->sqlite3_db_conn, query_str, -1,
                                &prep_stmt, 0);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_PREPARE_FAILED, "Failed preparing statment %s :"
                        "%s", query_str,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        ret = gf_sql_query_function(prep_stmt, query_callback, query_cbk_args);
        if (ret) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_QUERY_FAILED,
                        "Failed Query %s", query_str);
                goto out;
        }

        ret = 0;
out:
        sqlite3_finalize(prep_stmt);
        return ret;
}


/*
 * Find recently changed files from the DB
 * Input:
 *      query_callback  :       query callback fuction to handle
 *                              result records from the query
 *      from_time       :       Time to define what is recent
 * */
int
gf_sqlite3_find_recently_changed_files(void *db_conn,
                                        gf_query_callback_t query_callback,
                                        void *query_cbk_args,
                                        gfdb_time_t *from_time)
{
        int ret                                 =       -1;
        char *query_str                         =       NULL;
        gf_sql_connection_t *sql_conn           =       db_conn;
        sqlite3_stmt *prep_stmt                 =       NULL;
        long int  from_time_usec                =       0;

        CHECK_SQL_CONN (sql_conn, out);
        GF_VALIDATE_OR_GOTO(GFDB_STR_SQLITE3, query_callback, out);

        query_str = "select GF_FILE_TB.GF_ID,"
                " (select group_concat( GF_PID || ',' || FNAME || ','"
                " || FPATH || ',' || W_DEL_FLAG ||',' || LINK_UPDATE , '::')"
                " from GF_FLINK_TB where GF_FILE_TB.GF_ID = GF_FLINK_TB.GF_ID)"
                "  from GF_FILE_TB where "
                /*First condition: For writes*/
                "((" GF_COL_TB_WSEC " * " TOSTRING(GFDB_MICROSEC) " + "
                GF_COL_TB_WMSEC ") >= ? )"
                " OR "
                /*Second condition: For reads*/
                "((" GF_COL_TB_RWSEC " * " TOSTRING(GFDB_MICROSEC) " + "
                GF_COL_TB_RWMSEC ") >= ?)";

        from_time_usec = gfdb_time_2_usec(from_time);

        ret = sqlite3_prepare(sql_conn->sqlite3_db_conn, query_str, -1,
                                &prep_stmt, 0);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_PREPARE_FAILED, "Failed preparing statment %s :"
                        " %s", query_str,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind write wind time*/
        ret = sqlite3_bind_int64(prep_stmt, 1, from_time_usec);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding from_time_usec "
                        "%ld : %s", from_time_usec,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind read wind time*/
        ret = sqlite3_bind_int64(prep_stmt, 2, from_time_usec);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding from_time_usec "
                        "%ld : %s ", from_time_usec,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Execute the query*/
        ret = gf_sql_query_function(prep_stmt, query_callback, query_cbk_args);
        if (ret) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_QUERY_FAILED,
                        "Failed Query %s", query_str);
                goto out;
        }

        ret = 0;
out:
        sqlite3_finalize(prep_stmt);
        return ret;
}


/*
 * Find unchanged files from a specified time from the DB
 * Input:
 *      query_callback  :       query callback fuction to handle
 *                              result records from the query
 *      for_time        :        Time from where the file/s are not changed
 * */
int
gf_sqlite3_find_unchanged_for_time (void *db_conn,
                                        gf_query_callback_t query_callback,
                                        void *query_cbk_args,
                                        gfdb_time_t *for_time)
{
        int ret                                 =       -1;
        char *query_str                         =       NULL;
        gf_sql_connection_t *sql_conn           =       db_conn;
        sqlite3_stmt *prep_stmt                 =       NULL;
        long int  for_time_usec                =       0;

        CHECK_SQL_CONN (sql_conn, out);
        GF_VALIDATE_OR_GOTO(GFDB_STR_SQLITE3, query_callback, out);

        query_str = "select GF_FILE_TB.GF_ID,"
                " (select group_concat( GF_PID || ',' || FNAME || ','"
                " || FPATH || ',' || W_DEL_FLAG ||',' || LINK_UPDATE , '::')"
                " from GF_FLINK_TB where GF_FILE_TB.GF_ID = GF_FLINK_TB.GF_ID)"
                "  from GF_FILE_TB where "
                /*First condition: For writes*/
                "((" GF_COL_TB_WSEC " * " TOSTRING(GFDB_MICROSEC) " + "
                GF_COL_TB_WMSEC ") <= ? )"
                " AND "
                /*Second condition: For reads*/
                "((" GF_COL_TB_RWSEC " * " TOSTRING(GFDB_MICROSEC) " + "
                GF_COL_TB_RWMSEC ") <= ?)";

        for_time_usec = gfdb_time_2_usec(for_time);

        ret = sqlite3_prepare(sql_conn->sqlite3_db_conn, query_str, -1,
                                &prep_stmt, 0);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_PREPARE_FAILED, "Failed preparing statment %s :"
                        " %s", query_str,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind write wind time*/
        ret = sqlite3_bind_int64(prep_stmt, 1, for_time_usec);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
                        "%ld : %s", for_time_usec,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind read wind time*/
        ret = sqlite3_bind_int64(prep_stmt, 2, for_time_usec);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
                        "%ld : %s", for_time_usec,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Execute the query*/
        ret = gf_sql_query_function(prep_stmt, query_callback, query_cbk_args);
        if (ret) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_QUERY_FAILED,
                        "Failed Query %s", query_str);
                goto out;
        }

        ret = 0;
out:
        sqlite3_finalize(prep_stmt);
        return ret;
}





/*
 * Find recently changed files with a specific frequency from the DB
 * Input:
 *      db_conn         :       db connection object
 *      query_callback  :       query callback fuction to handle
 *                              result records from the query
 *      from_time       :       Time to define what is recent
 *      freq_write_cnt  :       Frequency thresold for write
 *      freq_read_cnt   :       Frequency thresold for read
 *      clear_counters  :       Clear counters (r/w) for all inodes in DB
 * */
int
gf_sqlite3_find_recently_changed_files_freq (void *db_conn,
                                        gf_query_callback_t query_callback,
                                        void *query_cbk_args,
                                        gfdb_time_t *from_time,
                                        int freq_write_cnt,
                                        int freq_read_cnt,
                                        gf_boolean_t clear_counters)
{
        int ret                                 =       -1;
        char *query_str                         =       NULL;
        gf_sql_connection_t *sql_conn           =       db_conn;
        sqlite3_stmt *prep_stmt                 =       NULL;
        long int  from_time_usec                =       0;

        CHECK_SQL_CONN (sql_conn, out);
        GF_VALIDATE_OR_GOTO(GFDB_STR_SQLITE3, query_callback, out);

        query_str = "select GF_FILE_TB.GF_ID,"
                " (select group_concat( GF_PID || ',' || FNAME || ','"
                " || FPATH || ',' || W_DEL_FLAG ||',' || LINK_UPDATE , '::')"
                " from GF_FLINK_TB where GF_FILE_TB.GF_ID = GF_FLINK_TB.GF_ID)"
                "  from GF_FILE_TB where "
                /*First condition: For Writes*/
                "( ((" GF_COL_TB_WSEC " * " TOSTRING(GFDB_MICROSEC) " + "
                GF_COL_TB_WMSEC ") >= ? )"
                " AND "" (" GF_COL_TB_WFC " >= ? ) )"
                " OR "
                /*Second condition: For Reads */
                "( ((" GF_COL_TB_RWSEC " * " TOSTRING(GFDB_MICROSEC) " + "
                GF_COL_TB_RWMSEC ") >= ?)"
                " AND "" (" GF_COL_TB_RFC " >= ? ) )";

        from_time_usec = gfdb_time_2_usec(from_time);

        ret = sqlite3_prepare(sql_conn->sqlite3_db_conn, query_str, -1,
                                &prep_stmt, 0);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_PREPARE_FAILED, "Failed preparing statment %s :"
                        " %s", query_str,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind write wind time*/
        ret = sqlite3_bind_int64(prep_stmt, 1, from_time_usec);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding from_time_usec "
                        "%ld : %s", from_time_usec,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind write frequency thresold*/
        ret = sqlite3_bind_int(prep_stmt, 2, freq_write_cnt);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding freq_write_cnt "
                        "%d : %s", freq_write_cnt,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }


        /*Bind read wind time*/
        ret = sqlite3_bind_int64(prep_stmt, 3, from_time_usec);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding from_time_usec "
                        "%ld : %s", from_time_usec,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind read frequency thresold*/
        ret = sqlite3_bind_int(prep_stmt, 4, freq_read_cnt);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding freq_read_cnt "
                        "%d : %s", freq_read_cnt,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Execute the query*/
        ret = gf_sql_query_function(prep_stmt, query_callback, query_cbk_args);
        if (ret) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_QUERY_FAILED,
                        "Failed Query %s", query_str);
                goto out;
        }



        /*Clear counters*/
        if (clear_counters) {
                ret = gf_sql_clear_counters(sql_conn);
                if (ret) {
                        gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                                LG_MSG_CLEAR_COUNTER_FAILED, "Failed clearing"
                                " counters!");
                        goto out;
                }
        }
        ret = 0;
out:
        sqlite3_finalize (prep_stmt);
        return ret;
}




/*
 * Find unchanged files from a specified time, w.r.t to frequency, from the DB
 * Input:
 *      query_callback  :       query callback fuction to handle
 *                              result records from the query
 *      for_time       :        Time from where the file/s are not changed
 *      freq_write_cnt  :       Frequency thresold for write
 *      freq_read_cnt   :       Frequency thresold for read
 *      clear_counters  :       Clear counters (r/w) for all inodes in DB
 * */
int
gf_sqlite3_find_unchanged_for_time_freq (void *db_conn,
                                        gf_query_callback_t query_callback,
                                        void *query_cbk_args,
                                        gfdb_time_t *for_time,
                                        int freq_write_cnt,
                                        int freq_read_cnt,
                                        gf_boolean_t clear_counters)
{
        int ret                                 =       -1;
        char *query_str                         =       NULL;
        gf_sql_connection_t *sql_conn           =       db_conn;
        sqlite3_stmt *prep_stmt                 =       NULL;
        long int  for_time_usec                 =       0;

        CHECK_SQL_CONN (sql_conn, out);
        GF_VALIDATE_OR_GOTO (GFDB_STR_SQLITE3, query_callback, out);

        query_str = "select GF_FILE_TB.GF_ID,"
                " (select group_concat( GF_PID || ',' || FNAME || ','"
                " || FPATH || ',' || W_DEL_FLAG ||',' || LINK_UPDATE , '::')"
                " from GF_FLINK_TB where GF_FILE_TB.GF_ID = GF_FLINK_TB.GF_ID)"
                "  from GF_FILE_TB where "
                /*First condition: For Writes
                 * Files that have write wind time smaller than for_time
                 * OR
                 * File that have write wind time greater than for_time,
                 * but write_frequency less than freq_write_cnt*/
                "( ((" GF_COL_TB_WSEC " * " TOSTRING(GFDB_MICROSEC) " + "
                GF_COL_TB_WMSEC ") < ? )"
                " OR "
                "( (" GF_COL_TB_WFC " < ? ) AND"
                "((" GF_COL_TB_WSEC " * " TOSTRING(GFDB_MICROSEC) " + "
                GF_COL_TB_WMSEC ") >= ? ) ) )"
                " AND "
                /*Second condition: For Reads
                 * Files that have read wind time smaller than for_time
                 * OR
                 * File that have read wind time greater than for_time,
                 * but write_frequency less than freq_write_cnt*/
                "( ((" GF_COL_TB_RWSEC " * " TOSTRING(GFDB_MICROSEC) " + "
                GF_COL_TB_RWMSEC ") < ? )"
                " OR "
                "( (" GF_COL_TB_RFC " < ? ) AND"
                "((" GF_COL_TB_RWSEC " * " TOSTRING(GFDB_MICROSEC) " + "
                GF_COL_TB_RWMSEC ") >= ? ) ) )";


        for_time_usec = gfdb_time_2_usec(for_time);

        ret = sqlite3_prepare (sql_conn->sqlite3_db_conn, query_str, -1,
                                &prep_stmt, 0);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_PREPARE_FAILED, "Failed preparing delete "
                        "statment %s : %s", query_str,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind write wind time*/
        ret = sqlite3_bind_int64 (prep_stmt, 1, for_time_usec);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
                        "%ld : %s", for_time_usec,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind write frequency thresold*/
        ret = sqlite3_bind_int (prep_stmt, 2, freq_write_cnt);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding freq_write_cnt"
                        " %d : %s", freq_write_cnt,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind write wind time*/
        ret = sqlite3_bind_int64 (prep_stmt, 3, for_time_usec);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
                        "%ld : %s", for_time_usec,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }



        /*Bind read wind time*/
        ret = sqlite3_bind_int64 (prep_stmt, 4, for_time_usec);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
                        "%ld : %s", for_time_usec,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind read frequency thresold*/
        ret = sqlite3_bind_int (prep_stmt, 5, freq_read_cnt);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding freq_read_cnt "
                        "%d : %s", freq_read_cnt,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Bind read wind time*/
        ret = sqlite3_bind_int64 (prep_stmt, 6, for_time_usec);
        if (ret != SQLITE_OK) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                        LG_MSG_BINDING_FAILED, "Failed binding for_time_usec "
                        "%ld : %s", for_time_usec,
                        sqlite3_errmsg(sql_conn->sqlite3_db_conn));
                ret = -1;
                goto out;
        }

        /*Execute the query*/
        ret = gf_sql_query_function (prep_stmt, query_callback, query_cbk_args);
        if (ret) {
                gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0, LG_MSG_QUERY_FAILED,
                        "Failed Query %s", query_str);
                goto out;
        }


        /*Clear counters*/
        if (clear_counters) {
                ret = gf_sql_clear_counters (sql_conn);
                if (ret) {
                        gf_msg (GFDB_STR_SQLITE3, GF_LOG_ERROR, 0,
                                LG_MSG_CLEAR_COUNTER_FAILED, "Failed clearing "
                                "counters!");
                        goto out;
                }
        }

        ret = 0;
out:
        sqlite3_finalize(prep_stmt);
        return ret;
}