GNUnet 0.22.2
plugin_datacache_sqlite.c
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1/*
2 This file is part of GNUnet
3 Copyright (C) 2006, 2009, 2015, 2022 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19 */
20
26#include "platform.h"
27#include "gnunet_util_lib.h"
28#include "gnunet_datacache_plugin.h"
29#include "gnunet_sq_lib.h"
30#include <sqlite3.h>
31
32#define LOG(kind, ...) GNUNET_log_from (kind, "datacache-sqlite", __VA_ARGS__)
33
34#define LOG_STRERROR_FILE(kind, op, fn) \
35 GNUNET_log_from_strerror_file (kind, "datacache-sqlite", op, fn)
36
37
42#define OVERHEAD (sizeof(struct GNUNET_HashCode) + 36)
43
47struct Plugin
48{
52 struct GNUNET_DATACACHE_PluginEnvironment *env;
53
57 sqlite3 *dbh;
58
62 char *fn;
63
67 sqlite3_stmt *insert_stmt;
68
72 sqlite3_stmt *get_count_stmt;
73
77 sqlite3_stmt *get_count_any_stmt;
78
82 sqlite3_stmt *get_stmt;
83
87 sqlite3_stmt *get_any_stmt;
88
92 sqlite3_stmt *del_select_stmt;
93
97 sqlite3_stmt *del_expired_stmt;
98
102 sqlite3_stmt *del_stmt;
103
107 sqlite3_stmt *get_closest_stmt;
108
112 unsigned int num_items;
113};
114
115
124#define LOG_SQLITE(db, level, cmd) \
125 do \
126 { \
127 LOG (level, \
128 _ ("`%s' failed at %s:%d with error: %s\n"), \
129 cmd, \
130 __FILE__, \
131 __LINE__, \
132 sqlite3_errmsg (db)); \
133 } while (0)
134
135
142#define SQLITE3_EXEC(db, cmd) \
143 do \
144 { \
145 emsg = NULL; \
146 if (SQLITE_OK != \
147 sqlite3_exec (db, cmd, NULL, NULL, &emsg)) \
148 { \
149 LOG (GNUNET_ERROR_TYPE_ERROR, \
150 _ ("`%s' failed at %s:%d with error: %s\n"), \
151 "sqlite3_exec", \
152 __FILE__, \
153 __LINE__, \
154 emsg); \
155 sqlite3_free (emsg); \
156 } \
157 } while (0)
158
159
168static int
169sq_prepare (sqlite3 *dbh,
170 const char *zSql, /* SQL statement, UTF-8 encoded */
171 sqlite3_stmt **ppStmt)
172{ /* OUT: Statement handle */
173 char *dummy;
174
175 return sqlite3_prepare (dbh,
176 zSql,
177 strlen (zSql),
178 ppStmt,
179 (const char **) &dummy);
180}
181
182
191static ssize_t
192sqlite_plugin_put (void *cls,
193 uint32_t xor_distance,
194 const struct GNUNET_DATACACHE_Block *block)
195{
196 struct Plugin *plugin = cls;
197 uint32_t type32 = (uint32_t) block->type;
198 uint32_t ro32 = (uint32_t) block->ro;
199 struct GNUNET_SQ_QueryParam params[] = {
200 GNUNET_SQ_query_param_uint32 (&type32),
201 GNUNET_SQ_query_param_uint32 (&ro32),
202 GNUNET_SQ_query_param_absolute_time (&block->expiration_time),
203 GNUNET_SQ_query_param_auto_from_type (&block->key),
204 GNUNET_SQ_query_param_uint32 (&xor_distance),
205 GNUNET_SQ_query_param_fixed_size (block->data,
206 block->data_size),
207 GNUNET_SQ_query_param_fixed_size (block->put_path,
208 block->put_path_length
209 * sizeof(struct GNUNET_DHT_PathElement)),
210 GNUNET_SQ_query_param_auto_from_type (&block->trunc_peer),
211 GNUNET_SQ_query_param_end
212 };
213
214 LOG (GNUNET_ERROR_TYPE_DEBUG,
215 "Processing PUT of %u bytes with key `%s' and expiration %s\n",
216 (unsigned int) block->data_size,
217 GNUNET_h2s (&block->key),
218 GNUNET_STRINGS_relative_time_to_string (
219 GNUNET_TIME_absolute_get_remaining (
220 block->expiration_time),
221 GNUNET_YES));
222 if (GNUNET_OK !=
223 GNUNET_SQ_bind (plugin->insert_stmt,
224 params))
225 {
226 LOG_SQLITE (plugin->dbh,
227 GNUNET_ERROR_TYPE_ERROR,
228 "sqlite3_bind_xxx");
229 GNUNET_SQ_reset (plugin->dbh,
230 plugin->insert_stmt);
231 return -1;
232 }
233 if (SQLITE_DONE !=
234 sqlite3_step (plugin->insert_stmt))
235 {
236 LOG_SQLITE (plugin->dbh,
237 GNUNET_ERROR_TYPE_ERROR,
238 "sqlite3_step");
239 GNUNET_SQ_reset (plugin->dbh,
240 plugin->insert_stmt);
241 return -1;
242 }
243 plugin->num_items++;
244 GNUNET_SQ_reset (plugin->dbh,
245 plugin->insert_stmt);
246 return block->data_size + OVERHEAD;
247}
248
249
260static unsigned int
261get_any (void *cls,
262 const struct GNUNET_HashCode *key,
263 GNUNET_DATACACHE_Iterator iter,
264 void *iter_cls)
265{
266 struct Plugin *plugin = cls;
267 struct GNUNET_TIME_Absolute now;
268 unsigned int cnt;
269 uint32_t off;
270 uint32_t btype32;
271 uint32_t bro32;
272 unsigned int total;
273 struct GNUNET_DATACACHE_Block block;
274 void *path;
275 void *data;
276 size_t path_size;
277 struct GNUNET_SQ_QueryParam params_count[] = {
278 GNUNET_SQ_query_param_auto_from_type (key),
279 GNUNET_SQ_query_param_absolute_time (&now),
280 GNUNET_SQ_query_param_end
281 };
282 struct GNUNET_SQ_QueryParam params_select[] = {
283 GNUNET_SQ_query_param_auto_from_type (key),
284 GNUNET_SQ_query_param_absolute_time (&now),
285 GNUNET_SQ_query_param_uint32 (&off),
286 GNUNET_SQ_query_param_end
287 };
288 struct GNUNET_SQ_ResultSpec rs[] = {
289 GNUNET_SQ_result_spec_variable_size (&data,
290 &block.data_size),
291 GNUNET_SQ_result_spec_absolute_time (&block.expiration_time),
292 GNUNET_SQ_result_spec_variable_size (&path,
293 &path_size),
294 GNUNET_SQ_result_spec_auto_from_type (&block.trunc_peer),
295 GNUNET_SQ_result_spec_uint32 (&btype32),
296 GNUNET_SQ_result_spec_uint32 (&bro32),
297 GNUNET_SQ_result_spec_end
298 };
299
300 now = GNUNET_TIME_absolute_get ();
301 LOG (GNUNET_ERROR_TYPE_DEBUG,
302 "Processing GET for key `%s'\n",
303 GNUNET_h2s (key));
304
305 if (GNUNET_OK !=
306 GNUNET_SQ_bind (plugin->get_count_any_stmt,
307 params_count))
308 {
309 LOG_SQLITE (plugin->dbh,
310 GNUNET_ERROR_TYPE_ERROR,
311 "sqlite3_bind_xxx");
312 GNUNET_SQ_reset (plugin->dbh,
313 plugin->get_count_any_stmt);
314 return 0;
315 }
316 if (SQLITE_ROW !=
317 sqlite3_step (plugin->get_count_any_stmt))
318 {
319 LOG_SQLITE (plugin->dbh,
320 GNUNET_ERROR_TYPE_ERROR,
321 "sqlite_step");
322 GNUNET_SQ_reset (plugin->dbh,
323 plugin->get_count_any_stmt);
324 LOG (GNUNET_ERROR_TYPE_DEBUG,
325 "No content found when processing GET for key `%s'\n",
326 GNUNET_h2s (key));
327 return 0;
328 }
329 total = sqlite3_column_int (plugin->get_count_any_stmt,
330 0);
331 GNUNET_SQ_reset (plugin->dbh,
332 plugin->get_count_any_stmt);
333 if ( (0 == total) ||
334 (NULL == iter) )
335 {
336 if (0 == total)
337 LOG (GNUNET_ERROR_TYPE_DEBUG,
338 "No content found when processing GET for key `%s'\n",
339 GNUNET_h2s (key));
340 return total;
341 }
342
343 cnt = 0;
344 block.key = *key;
345 off = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
346 total);
347 while (cnt < total)
348 {
349 off = (off + 1) % total;
350 if (GNUNET_OK !=
351 GNUNET_SQ_bind (plugin->get_any_stmt,
352 params_select))
353 {
354 LOG_SQLITE (plugin->dbh,
355 GNUNET_ERROR_TYPE_ERROR,
356 "sqlite3_bind_xxx");
357 GNUNET_SQ_reset (plugin->dbh,
358 plugin->get_any_stmt);
359 return cnt;
360 }
361 if (SQLITE_ROW !=
362 sqlite3_step (plugin->get_any_stmt))
363 break;
364 if (GNUNET_OK !=
365 GNUNET_SQ_extract_result (plugin->get_any_stmt,
366 rs))
367 {
368 GNUNET_break (0);
369 GNUNET_SQ_reset (plugin->dbh,
370 plugin->get_any_stmt);
371 break;
372 }
373 if (0 != path_size % sizeof(struct GNUNET_DHT_PathElement))
374 {
375 GNUNET_break (0);
376 path_size = 0;
377 path = NULL;
378 }
379 block.data = data;
380 block.put_path = path;
381 block.put_path_length = path_size / sizeof(struct GNUNET_DHT_PathElement);
382 block.type = (enum GNUNET_BLOCK_Type) btype32;
383 block.ro = (enum GNUNET_DHT_RouteOption) bro32;
384 cnt++;
385 LOG (GNUNET_ERROR_TYPE_DEBUG,
386 "Found %u-byte result when processing GET for key `%s'\n",
387 (unsigned int) block.data_size,
388 GNUNET_h2s (&block.key));
389 if (GNUNET_OK !=
390 iter (iter_cls,
391 &block))
392 {
393 GNUNET_SQ_cleanup_result (rs);
394 GNUNET_SQ_reset (plugin->dbh,
395 plugin->get_any_stmt);
396 break;
397 }
398 GNUNET_SQ_cleanup_result (rs);
399 GNUNET_SQ_reset (plugin->dbh,
400 plugin->get_any_stmt);
401 }
402 GNUNET_SQ_reset (plugin->dbh,
403 plugin->get_any_stmt);
404 return cnt;
405}
406
407
419static unsigned int
420get_typed (void *cls,
421 const struct GNUNET_HashCode *key,
422 enum GNUNET_BLOCK_Type type,
423 GNUNET_DATACACHE_Iterator iter,
424 void *iter_cls)
425{
426 struct Plugin *plugin = cls;
427 uint32_t type32 = type;
428 struct GNUNET_TIME_Absolute now;
429 unsigned int cnt;
430 uint32_t off;
431 uint32_t bro32;
432 unsigned int total;
433 struct GNUNET_DATACACHE_Block block;
434 void *path;
435 void *data;
436 size_t path_size;
437 struct GNUNET_SQ_QueryParam params_count[] = {
438 GNUNET_SQ_query_param_auto_from_type (key),
439 GNUNET_SQ_query_param_uint32 (&type32),
440 GNUNET_SQ_query_param_absolute_time (&now),
441 GNUNET_SQ_query_param_end
442 };
443 struct GNUNET_SQ_QueryParam params_select[] = {
444 GNUNET_SQ_query_param_auto_from_type (key),
445 GNUNET_SQ_query_param_uint32 (&type32),
446 GNUNET_SQ_query_param_absolute_time (&now),
447 GNUNET_SQ_query_param_uint32 (&off),
448 GNUNET_SQ_query_param_end
449 };
450 struct GNUNET_SQ_ResultSpec rs[] = {
451 GNUNET_SQ_result_spec_variable_size (&data,
452 &block.data_size),
453 GNUNET_SQ_result_spec_absolute_time (&block.expiration_time),
454 GNUNET_SQ_result_spec_variable_size (&path,
455 &path_size),
456 GNUNET_SQ_result_spec_auto_from_type (&block.trunc_peer),
457 GNUNET_SQ_result_spec_uint32 (&bro32),
458 GNUNET_SQ_result_spec_end
459 };
460
461 now = GNUNET_TIME_absolute_get ();
462 LOG (GNUNET_ERROR_TYPE_DEBUG,
463 "Processing GET for key `%s'\n",
464 GNUNET_h2s (key));
465
466 if (GNUNET_OK !=
467 GNUNET_SQ_bind (plugin->get_count_stmt,
468 params_count))
469 {
470 LOG_SQLITE (plugin->dbh,
471 GNUNET_ERROR_TYPE_ERROR,
472 "sqlite3_bind_xxx");
473 GNUNET_SQ_reset (plugin->dbh,
474 plugin->get_count_stmt);
475 return 0;
476 }
477 if (SQLITE_ROW !=
478 sqlite3_step (plugin->get_count_stmt))
479 {
480 LOG_SQLITE (plugin->dbh,
481 GNUNET_ERROR_TYPE_ERROR,
482 "sqlite_step");
483 GNUNET_SQ_reset (plugin->dbh,
484 plugin->get_count_stmt);
485 LOG (GNUNET_ERROR_TYPE_DEBUG,
486 "No content found when processing GET for key `%s'\n",
487 GNUNET_h2s (key));
488 return 0;
489 }
490 total = sqlite3_column_int (plugin->get_count_stmt,
491 0);
492 GNUNET_SQ_reset (plugin->dbh,
493 plugin->get_count_stmt);
494 if ( (0 == total) ||
495 (NULL == iter) )
496 {
497 if (0 == total)
498 LOG (GNUNET_ERROR_TYPE_DEBUG,
499 "No content found when processing GET for key `%s'\n",
500 GNUNET_h2s (key));
501 return total;
502 }
503
504 cnt = 0;
505 block.key = *key;
506 off = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
507 total);
508 while (cnt < total)
509 {
510 off = (off + 1) % total;
511 if (GNUNET_OK !=
512 GNUNET_SQ_bind (plugin->get_stmt,
513 params_select))
514 {
515 LOG_SQLITE (plugin->dbh,
516 GNUNET_ERROR_TYPE_ERROR,
517 "sqlite3_bind_xxx");
518 GNUNET_SQ_reset (plugin->dbh,
519 plugin->get_stmt);
520 return cnt;
521 }
522 if (SQLITE_ROW !=
523 sqlite3_step (plugin->get_stmt))
524 break;
525 if (GNUNET_OK !=
526 GNUNET_SQ_extract_result (plugin->get_stmt,
527 rs))
528 {
529 GNUNET_break (0);
530 GNUNET_SQ_reset (plugin->dbh,
531 plugin->get_stmt);
532 break;
533 }
534 if (0 != path_size % sizeof(struct GNUNET_DHT_PathElement))
535 {
536 GNUNET_break (0);
537 path_size = 0;
538 path = NULL;
539 }
540 block.data = data;
541 block.put_path = path;
542 block.put_path_length = path_size / sizeof(struct GNUNET_DHT_PathElement);
543 block.type = type;
544 block.ro = (enum GNUNET_DHT_RouteOption) bro32;
545 cnt++;
546 LOG (GNUNET_ERROR_TYPE_DEBUG,
547 "Found %u-byte result when processing GET for key `%s'\n",
548 (unsigned int) block.data_size,
549 GNUNET_h2s (&block.key));
550 if ( (NULL != iter) &&
551 (GNUNET_OK !=
552 iter (iter_cls,
553 &block)) )
554 {
555 GNUNET_SQ_cleanup_result (rs);
556 GNUNET_SQ_reset (plugin->dbh,
557 plugin->get_stmt);
558 break;
559 }
560 GNUNET_SQ_cleanup_result (rs);
561 GNUNET_SQ_reset (plugin->dbh,
562 plugin->get_stmt);
563 }
564 GNUNET_SQ_reset (plugin->dbh,
565 plugin->get_stmt);
566 return cnt;
567}
568
569
581static unsigned int
582sqlite_plugin_get (void *cls,
583 const struct GNUNET_HashCode *key,
584 enum GNUNET_BLOCK_Type type,
585 GNUNET_DATACACHE_Iterator iter,
586 void *iter_cls)
587{
588 if (GNUNET_BLOCK_TYPE_ANY == type)
589 return get_any (cls,
590 key,
591 iter,
592 iter_cls);
593 return get_typed (cls,
594 key,
595 type,
596 iter,
597 iter_cls);
598}
599
600
608static enum GNUNET_GenericReturnValue
609sqlite_plugin_del (void *cls)
610{
611 struct Plugin *plugin = cls;
612 uint64_t rowid;
613 void *data;
614 size_t data_size;
615 struct GNUNET_HashCode hc;
616 struct GNUNET_TIME_Absolute now;
617 struct GNUNET_SQ_ResultSpec rs[] = {
618 GNUNET_SQ_result_spec_uint64 (&rowid),
619 GNUNET_SQ_result_spec_auto_from_type (&hc),
620 GNUNET_SQ_result_spec_variable_size (&data,
621 &data_size),
622 GNUNET_SQ_result_spec_end
623 };
624 struct GNUNET_SQ_QueryParam params[] = {
625 GNUNET_SQ_query_param_uint64 (&rowid),
626 GNUNET_SQ_query_param_end
627 };
628 struct GNUNET_SQ_QueryParam time_params[] = {
629 GNUNET_SQ_query_param_absolute_time (&now),
630 GNUNET_SQ_query_param_end
631 };
632
633 LOG (GNUNET_ERROR_TYPE_DEBUG,
634 "Processing DEL\n");
635 now = GNUNET_TIME_absolute_get ();
636 if (GNUNET_OK !=
637 GNUNET_SQ_bind (plugin->del_expired_stmt,
638 time_params))
639 {
640 LOG_SQLITE (plugin->dbh,
641 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
642 "sqlite3_bind");
643 GNUNET_SQ_reset (plugin->dbh,
644 plugin->del_expired_stmt);
645 return GNUNET_SYSERR;
646 }
647 if ( (SQLITE_ROW !=
648 sqlite3_step (plugin->del_expired_stmt)) ||
649 (GNUNET_OK !=
650 GNUNET_SQ_extract_result (plugin->del_expired_stmt,
651 rs)))
652 {
653 GNUNET_SQ_reset (plugin->dbh,
654 plugin->del_expired_stmt);
655 if (SQLITE_ROW !=
656 sqlite3_step (plugin->del_select_stmt))
657 {
658 LOG_SQLITE (plugin->dbh,
659 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
660 "sqlite3_step");
661 GNUNET_SQ_reset (plugin->dbh,
662 plugin->del_select_stmt);
663 return GNUNET_SYSERR;
664 }
665 if (GNUNET_OK !=
666 GNUNET_SQ_extract_result (plugin->del_select_stmt,
667 rs))
668 {
669 GNUNET_SQ_reset (plugin->dbh,
670 plugin->del_select_stmt);
671 GNUNET_break (0);
672 return GNUNET_SYSERR;
673 }
674 }
675 GNUNET_SQ_cleanup_result (rs);
676 GNUNET_SQ_reset (plugin->dbh,
677 plugin->del_select_stmt);
678 if (GNUNET_OK !=
679 GNUNET_SQ_bind (plugin->del_stmt,
680 params))
681 {
682 LOG_SQLITE (plugin->dbh,
683 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
684 "sqlite3_bind");
685 GNUNET_SQ_reset (plugin->dbh,
686 plugin->del_stmt);
687 return GNUNET_SYSERR;
688 }
689 if (SQLITE_DONE !=
690 sqlite3_step (plugin->del_stmt))
691 {
692 LOG_SQLITE (plugin->dbh,
693 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
694 "sqlite3_step");
695 GNUNET_SQ_reset (plugin->dbh,
696 plugin->del_stmt);
697 return GNUNET_SYSERR;
698 }
699 plugin->num_items--;
700 plugin->env->delete_notify (plugin->env->cls,
701 &hc,
702 data_size + OVERHEAD);
703 GNUNET_SQ_reset (plugin->dbh,
704 plugin->del_stmt);
705 return GNUNET_OK;
706}
707
708
723static unsigned int
724sqlite_plugin_get_closest (void *cls,
725 const struct GNUNET_HashCode *key,
726 enum GNUNET_BLOCK_Type type,
727 unsigned int num_results,
728 GNUNET_DATACACHE_Iterator iter,
729 void *iter_cls)
730{
731 struct Plugin *plugin = cls;
732 uint32_t type32 = type;
733 uint32_t num_results32 = num_results;
734 struct GNUNET_TIME_Absolute now;
735 void *data;
736 void *path;
737 size_t path_size;
738 unsigned int cnt;
739 uint32_t bro32;
740 struct GNUNET_DATACACHE_Block block;
741 uint32_t rtype32;
742 struct GNUNET_SQ_QueryParam params[] = {
743 GNUNET_SQ_query_param_auto_from_type (key),
744 GNUNET_SQ_query_param_absolute_time (&now),
745 GNUNET_SQ_query_param_uint32 (&type32),
746 GNUNET_SQ_query_param_uint32 (&num_results32),
747 GNUNET_SQ_query_param_end
748 };
749 struct GNUNET_SQ_ResultSpec rs[] = {
750 GNUNET_SQ_result_spec_variable_size (&data,
751 &block.data_size),
752 GNUNET_SQ_result_spec_absolute_time (&block.expiration_time),
753 GNUNET_SQ_result_spec_variable_size (&path,
754 &path_size),
755 GNUNET_SQ_result_spec_auto_from_type (&block.trunc_peer),
756 GNUNET_SQ_result_spec_uint32 (&rtype32),
757 GNUNET_SQ_result_spec_uint32 (&bro32),
758 GNUNET_SQ_result_spec_auto_from_type (&block.key),
759 GNUNET_SQ_result_spec_end
760 };
761
762 now = GNUNET_TIME_absolute_get ();
763 LOG (GNUNET_ERROR_TYPE_DEBUG,
764 "Processing GET_CLOSEST for key `%s'\n",
765 GNUNET_h2s (key));
766 if (GNUNET_OK !=
767 GNUNET_SQ_bind (plugin->get_closest_stmt,
768 params))
769 {
770 LOG_SQLITE (plugin->dbh,
771 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
772 "sqlite3_bind_xxx");
773 GNUNET_SQ_reset (plugin->dbh,
774 plugin->get_closest_stmt);
775 return 0;
776 }
777 cnt = 0;
778 while (SQLITE_ROW ==
779 sqlite3_step (plugin->get_closest_stmt))
780 {
781 if (GNUNET_OK !=
782 GNUNET_SQ_extract_result (plugin->get_closest_stmt,
783 rs))
784 {
785 GNUNET_break (0);
786 break;
787 }
788 if (0 != path_size % sizeof(struct GNUNET_DHT_PathElement))
789 {
790 GNUNET_break (0);
791 path_size = 0;
792 path = NULL;
793 }
794 block.put_path_length
795 = path_size / sizeof(struct GNUNET_DHT_PathElement);
796 block.put_path = path;
797 block.data = data;
798 block.type = (enum GNUNET_BLOCK_Type) rtype32;
799 block.ro = (enum GNUNET_DHT_RouteOption) bro32;
800 cnt++;
801 LOG (GNUNET_ERROR_TYPE_DEBUG,
802 "Found %u-byte result at %s when processing GET_CLOSE\n",
803 (unsigned int) block.data_size,
804 GNUNET_h2s (&block.key));
805
806 if (GNUNET_OK !=
807 iter (iter_cls,
808 &block))
809 {
810 GNUNET_SQ_cleanup_result (rs);
811 break;
812 }
813 GNUNET_SQ_cleanup_result (rs);
814 }
815 GNUNET_SQ_reset (plugin->dbh,
816 plugin->get_closest_stmt);
817 return cnt;
818}
819
820void *
821libgnunet_plugin_datacache_sqlite_init (void *cls);
822
829void *
830libgnunet_plugin_datacache_sqlite_init (void *cls)
831{
832 struct GNUNET_DATACACHE_PluginEnvironment *env = cls;
833 struct GNUNET_DATACACHE_PluginFunctions *api;
834 struct Plugin *plugin;
835 char *fn;
836 char *fn_utf8;
837 sqlite3 *dbh;
838 char *emsg;
839
840 if (GNUNET_YES ==
841 GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
842 "datacache-sqlite",
843 "IN_MEMORY"))
844 {
845 if (SQLITE_OK !=
846 sqlite3_open (":memory:",
847 &dbh))
848 return NULL;
849 fn_utf8 = NULL;
850 }
851 else
852 {
853 fn = GNUNET_DISK_mktemp ("gnunet-datacache");
854 if (NULL == fn)
855 {
856 GNUNET_break (0);
857 return NULL;
858 }
859 /* fn should be UTF-8-encoded. If it isn't, it's a bug. */
860 fn_utf8 = GNUNET_strdup (fn);
861 if (SQLITE_OK !=
862 sqlite3_open (fn_utf8,
863 &dbh))
864 {
865 GNUNET_free (fn);
866 GNUNET_free (fn_utf8);
867 return NULL;
868 }
869 GNUNET_free (fn);
870 }
871
872 SQLITE3_EXEC (dbh, "PRAGMA temp_store=MEMORY");
873 SQLITE3_EXEC (dbh, "PRAGMA locking_mode=EXCLUSIVE");
874 SQLITE3_EXEC (dbh, "PRAGMA journal_mode=OFF");
875 SQLITE3_EXEC (dbh, "PRAGMA synchronous=OFF");
876 SQLITE3_EXEC (dbh, "PRAGMA page_size=4092");
877 if (GNUNET_YES ==
878 GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
879 "datacache-sqlite",
880 "IN_MEMORY"))
881 SQLITE3_EXEC (dbh, "PRAGMA sqlite_temp_store=3");
882
883 SQLITE3_EXEC (dbh,
884 "CREATE TABLE ds180 ("
885 " type INTEGER NOT NULL DEFAULT 0,"
886 " ro INTEGER NOT NULL DEFAULT 0,"
887 " expire INTEGER NOT NULL,"
888 " key BLOB NOT NULL DEFAULT '',"
889 " prox INTEGER NOT NULL,"
890 " value BLOB NOT NULL,"
891 " trunc BLOB NOT NULL,"
892 " path BLOB DEFAULT '')");
893 SQLITE3_EXEC (dbh,
894 "CREATE INDEX idx_hashidx"
895 " ON ds180 (key,type,expire)");
896 SQLITE3_EXEC (dbh,
897 "CREATE INDEX idx_prox_expire"
898 " ON ds180 (prox,expire)");
899 SQLITE3_EXEC (dbh,
900 "CREATE INDEX idx_expire_only"
901 " ON ds180 (expire)");
902 plugin = GNUNET_new (struct Plugin);
903 plugin->env = env;
904 plugin->dbh = dbh;
905 plugin->fn = fn_utf8;
906
907 if ((SQLITE_OK !=
908 sq_prepare (plugin->dbh,
909 "INSERT INTO ds180"
910 " (type, ro, expire, key, prox, value, path, trunc)"
911 " VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
912 &plugin->insert_stmt)) ||
913 (SQLITE_OK !=
914 sq_prepare (plugin->dbh,
915 "SELECT COUNT(*) FROM ds180 "
916 "WHERE key=?"
917 " AND type=?"
918 " AND expire >= ?",
919 &plugin->get_count_stmt)) ||
920 (SQLITE_OK !=
921 sq_prepare (plugin->dbh,
922 "SELECT COUNT(*) FROM ds180 "
923 "WHERE key=? AND expire >= ?",
924 &plugin->get_count_any_stmt)) ||
925 (SQLITE_OK !=
926 sq_prepare (plugin->dbh,
927 "SELECT value,expire,path,trunc,ro"
928 " FROM ds180"
929 " WHERE key=?"
930 " AND type=?"
931 " AND expire >= ?"
932 " LIMIT 1 OFFSET ?",
933 &plugin->get_stmt)) ||
934 (SQLITE_OK !=
935 sq_prepare (plugin->dbh,
936 "SELECT value,expire,path,trunc,type,ro"
937 " FROM ds180"
938 " WHERE key=?"
939 " AND expire >= ?"
940 " LIMIT 1 OFFSET ?",
941 &plugin->get_any_stmt)) ||
942 (SQLITE_OK !=
943 sq_prepare (plugin->dbh,
944 "SELECT _ROWID_,key,value FROM ds180"
945 " WHERE expire < ?1"
946 " ORDER BY expire ASC LIMIT 1",
947 &plugin->del_expired_stmt)) ||
948 (SQLITE_OK !=
949 sq_prepare (plugin->dbh,
950 "SELECT _ROWID_,key,value FROM ds180"
951 " ORDER BY prox ASC, expire ASC LIMIT 1",
952 &plugin->del_select_stmt)) ||
953 (SQLITE_OK !=
954 sq_prepare (plugin->dbh,
955 "DELETE FROM ds180 WHERE _ROWID_=?",
956 &plugin->del_stmt)) ||
957 (SQLITE_OK !=
958 sq_prepare (plugin->dbh,
959 "SELECT * FROM ("
960 " SELECT value,expire,path,trunc,type,ro,key"
961 " FROM ds180 "
962 " WHERE key>=?1 "
963 " AND expire >= ?2"
964 " AND ( (type=?3) or (0 == ?3) )"
965 " ORDER BY KEY ASC LIMIT ?4)"
966 "UNION "
967 "SELECT * FROM ("
968 " SELECT value,expire,path,trunc,type,ro,key"
969 " FROM ds180 "
970 " WHERE key<=?1 "
971 " AND expire >= ?2"
972 " AND ( (type=?3) or (0 == ?3) )"
973 " ORDER BY KEY DESC LIMIT ?4)",
974 &plugin->get_closest_stmt)))
975 {
976 LOG_SQLITE (plugin->dbh,
977 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
978 "sq_prepare");
979 GNUNET_break (SQLITE_OK ==
980 sqlite3_close (plugin->dbh));
981 GNUNET_free (plugin);
982 return NULL;
983 }
984
985 api = GNUNET_new (struct GNUNET_DATACACHE_PluginFunctions);
986 api->cls = plugin;
987 api->get = &sqlite_plugin_get;
988 api->put = &sqlite_plugin_put;
989 api->del = &sqlite_plugin_del;
990 api->get_closest = &sqlite_plugin_get_closest;
991 LOG (GNUNET_ERROR_TYPE_INFO,
992 "Sqlite datacache running\n");
993 return api;
994}
995
996void *
997libgnunet_plugin_datacache_sqlite_done (void *cls);
998
1005void *
1006libgnunet_plugin_datacache_sqlite_done (void *cls)
1007{
1008 struct GNUNET_DATACACHE_PluginFunctions *api = cls;
1009 struct Plugin *plugin = api->cls;
1010 int result;
1011
1012#if SQLITE_VERSION_NUMBER >= 3007000
1013 sqlite3_stmt *stmt;
1014#endif
1015
1016#if ! WINDOWS || defined(__CYGWIN__)
1017 if ( (NULL != plugin->fn) &&
1018 (0 != unlink (plugin->fn)) )
1019 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING,
1020 "unlink",
1021 plugin->fn);
1022 GNUNET_free (plugin->fn);
1023#endif
1024 sqlite3_finalize (plugin->insert_stmt);
1025 sqlite3_finalize (plugin->get_count_stmt);
1026 sqlite3_finalize (plugin->get_count_any_stmt);
1027 sqlite3_finalize (plugin->get_stmt);
1028 sqlite3_finalize (plugin->get_any_stmt);
1029 sqlite3_finalize (plugin->del_select_stmt);
1030 sqlite3_finalize (plugin->del_expired_stmt);
1031 sqlite3_finalize (plugin->del_stmt);
1032 sqlite3_finalize (plugin->get_closest_stmt);
1033 result = sqlite3_close (plugin->dbh);
1034#if SQLITE_VERSION_NUMBER >= 3007000
1035 if (SQLITE_BUSY == result)
1036 {
1037 LOG (GNUNET_ERROR_TYPE_WARNING,
1038 _ (
1039 "Tried to close sqlite without finalizing all prepared statements.\n"));
1040 stmt = sqlite3_next_stmt (plugin->dbh,
1041 NULL);
1042 while (NULL != stmt)
1043 {
1044 result = sqlite3_finalize (stmt);
1045 if (result != SQLITE_OK)
1046 LOG (GNUNET_ERROR_TYPE_WARNING,
1047 "Failed to close statement %p: %d\n",
1048 stmt,
1049 result);
1050 stmt = sqlite3_next_stmt (plugin->dbh,
1051 NULL);
1052 }
1053 result = sqlite3_close (plugin->dbh);
1054 }
1055#endif
1056 if (SQLITE_OK != result)
1057 LOG_SQLITE (plugin->dbh,
1058 GNUNET_ERROR_TYPE_ERROR,
1059 "sqlite3_close");
1060
1061 GNUNET_free (plugin);
1062 GNUNET_free (api);
1063 return NULL;
1064}
1065
1066
1067/* end of plugin_datacache_sqlite.c */
env
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
plugin
static struct GNUNET_TESTING_PluginFunctions * plugin
Plugin to dynamically load a test case.
Definition: gnunet-cmds-helper.c:92
data
static char * data
The data to insert into the dht.
Definition: gnunet-dht-put.c:88
key
struct GNUNET_HashCode key
The key used in the DHT.
Definition: gnunet-dht-put.c:37
dummy
static struct in_addr dummy
Target "dummy" address of the packet we pretend to respond to.
Definition: gnunet-helper-nat-client.c:200
type
static uint32_t type
Type string converted to DNS type value.
Definition: gnunet-namestore.c:306
data_size
static size_t data_size
Number of bytes in data.
Definition: gnunet-namestore.c:316
result
static int result
Global testing status.
Definition: gnunet-regex-profiler.c:240
gnunet_datacache_plugin.h
API for database backends for the datacache.
gnunet_sq_lib.h
helper functions for Sqlite3 DB interactions
GNUNET_SQ_query_param_fixed_size
struct GNUNET_SQ_QueryParam GNUNET_SQ_query_param_fixed_size(const void *ptr, size_t ptr_size)
Generate query parameter for a buffer ptr of ptr_size bytes.
Definition: sq_query_helper.c:66
GNUNET_SQ_extract_result
enum GNUNET_GenericReturnValue GNUNET_SQ_extract_result(sqlite3_stmt *result, struct GNUNET_SQ_ResultSpec *rs)
Extract results from a query result according to the given specification.
Definition: sq.c:75
GNUNET_SQ_cleanup_result
void GNUNET_SQ_cleanup_result(struct GNUNET_SQ_ResultSpec *rs)
Free all memory that was allocated in rs during GNUNET_SQ_extract_result().
Definition: sq.c:104
GNUNET_SQ_query_param_uint32
struct GNUNET_SQ_QueryParam GNUNET_SQ_query_param_uint32(const uint32_t *x)
Generate query parameter for an uint32_t in host byte order.
Definition: sq_query_helper.c:448
GNUNET_SQ_query_param_uint64
struct GNUNET_SQ_QueryParam GNUNET_SQ_query_param_uint64(const uint64_t *x)
Generate query parameter for an uint16_t in host byte order.
Definition: sq_query_helper.c:497
GNUNET_SQ_result_spec_absolute_time
struct GNUNET_SQ_ResultSpec GNUNET_SQ_result_spec_absolute_time(struct GNUNET_TIME_Absolute *at)
Absolute time expected.
Definition: sq_result_helper.c:534
GNUNET_SQ_result_spec_uint32
struct GNUNET_SQ_ResultSpec GNUNET_SQ_result_spec_uint32(uint32_t *u32)
uint32_t expected.
Definition: sq_result_helper.c:717
GNUNET_SQ_query_param_absolute_time
struct GNUNET_SQ_QueryParam GNUNET_SQ_query_param_absolute_time(const struct GNUNET_TIME_Absolute *x)
Generate query parameter for an absolute time value.
Definition: sq_query_helper.c:295
GNUNET_SQ_result_spec_end
#define GNUNET_SQ_result_spec_end
End of result parameter specification.
Definition: gnunet_sq_lib.h:302
GNUNET_SQ_result_spec_variable_size
struct GNUNET_SQ_ResultSpec GNUNET_SQ_result_spec_variable_size(void **dst, size_t *sptr)
Variable-size result expected.
Definition: sq_result_helper.c:119
GNUNET_SQ_query_param_auto_from_type
#define GNUNET_SQ_query_param_auto_from_type(x)
Generate fixed-size query parameter with size determined by variable type.
Definition: gnunet_sq_lib.h:117
GNUNET_SQ_bind
enum GNUNET_GenericReturnValue GNUNET_SQ_bind(sqlite3_stmt *stmt, const struct GNUNET_SQ_QueryParam *params)
Execute binding operations for a prepared statement.
Definition: sq.c:30
GNUNET_SQ_reset
void GNUNET_SQ_reset(sqlite3 *dbh, sqlite3_stmt *stmt)
Reset stmt and log error.
Definition: sq.c:119
GNUNET_SQ_query_param_end
#define GNUNET_SQ_query_param_end
End of query parameter specification.
Definition: gnunet_sq_lib.h:87
GNUNET_SQ_result_spec_auto_from_type
#define GNUNET_SQ_result_spec_auto_from_type(dst)
We expect a fixed-size result, with size determined by the type of * dst
Definition: gnunet_sq_lib.h:335
GNUNET_SQ_result_spec_uint64
struct GNUNET_SQ_ResultSpec GNUNET_SQ_result_spec_uint64(uint64_t *u64)
uint64_t expected.
Definition: sq_result_helper.c:772
gnunet_util_lib.h
GNUNET_CONFIGURATION_get_value_yesno
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_yesno(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Get a configuration value that should be in a set of "YES" or "NO".
Definition: configuration.c:2133
GNUNET_CRYPTO_random_u32
uint32_t GNUNET_CRYPTO_random_u32(enum GNUNET_CRYPTO_Quality mode, uint32_t i)
Produce a random value.
Definition: crypto_random.c:178
GNUNET_CRYPTO_QUALITY_WEAK
@ GNUNET_CRYPTO_QUALITY_WEAK
No good quality of the operation is needed (i.e., random numbers can be pseudo-random).
Definition: gnunet_crypto_lib.h:91
GNUNET_DATACACHE_Iterator
enum GNUNET_GenericReturnValue(* GNUNET_DATACACHE_Iterator)(void *cls, const struct GNUNET_DATACACHE_Block *block)
An iterator over a set of items stored in the datacache.
Definition: gnunet_datacache_lib.h:145
GNUNET_DHT_RouteOption
GNUNET_DHT_RouteOption
Options for routing.
Definition: gnunet_dht_service.h:89
GNUNET_DISK_mktemp
char * GNUNET_DISK_mktemp(const char *t)
Create an (empty) temporary file on disk.
Definition: disk.c:404
GNUNET_GenericReturnValue
GNUNET_GenericReturnValue
Named constants for return values.
Definition: gnunet_common.h:108
GNUNET_OK
@ GNUNET_OK
Definition: gnunet_common.h:111
GNUNET_YES
@ GNUNET_YES
Definition: gnunet_common.h:113
GNUNET_SYSERR
@ GNUNET_SYSERR
Definition: gnunet_common.h:109
GNUNET_break
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
Definition: gnunet_common.h:1041
GNUNET_h2s
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
Definition: common_logging.c:1166
GNUNET_ERROR_TYPE_WARNING
@ GNUNET_ERROR_TYPE_WARNING
Definition: gnunet_common.h:415
GNUNET_ERROR_TYPE_ERROR
@ GNUNET_ERROR_TYPE_ERROR
Definition: gnunet_common.h:414
GNUNET_ERROR_TYPE_BULK
@ GNUNET_ERROR_TYPE_BULK
Definition: gnunet_common.h:423
GNUNET_ERROR_TYPE_DEBUG
@ GNUNET_ERROR_TYPE_DEBUG
Definition: gnunet_common.h:421
GNUNET_ERROR_TYPE_INFO
@ GNUNET_ERROR_TYPE_INFO
Definition: gnunet_common.h:420
GNUNET_strdup
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
Definition: gnunet_common.h:1425
GNUNET_new
#define GNUNET_new(type)
Allocate a struct or union of the given type.
Definition: gnunet_common.h:1236
GNUNET_free
#define GNUNET_free(ptr)
Wrapper around free.
Definition: gnunet_common.h:1411
GNUNET_TIME_absolute_get_remaining
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_remaining(struct GNUNET_TIME_Absolute future)
Given a timestamp in the future, how much time remains until then?
Definition: time.c:406
GNUNET_STRINGS_relative_time_to_string
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:579
GNUNET_TIME_absolute_get
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:111
_
#define _(String)
GNU gettext support macro.
Definition: platform.h:178
sqlite_plugin_put
static ssize_t sqlite_plugin_put(void *cls, uint32_t xor_distance, const struct GNUNET_DATACACHE_Block *block)
Store an item in the datastore.
Definition: plugin_datacache_sqlite.c:192
OVERHEAD
#define OVERHEAD
How much overhead do we assume per entry in the datacache?
Definition: plugin_datacache_sqlite.c:42
SQLITE3_EXEC
#define SQLITE3_EXEC(db, cmd)
Execute SQL statement.
Definition: plugin_datacache_sqlite.c:142
libgnunet_plugin_datacache_sqlite_init
void * libgnunet_plugin_datacache_sqlite_init(void *cls)
Entry point for the plugin.
Definition: plugin_datacache_sqlite.c:830
LOG_SQLITE
#define LOG_SQLITE(db, level, cmd)
Log an error message at log-level level that indicates a failure of the command cmd with the error fr...
Definition: plugin_datacache_sqlite.c:124
sqlite_plugin_get
static unsigned int sqlite_plugin_get(void *cls, const struct GNUNET_HashCode *key, enum GNUNET_BLOCK_Type type, GNUNET_DATACACHE_Iterator iter, void *iter_cls)
Iterate over the results for a particular key in the datastore.
Definition: plugin_datacache_sqlite.c:582
sq_prepare
static int sq_prepare(sqlite3 *dbh, const char *zSql, sqlite3_stmt **ppStmt)
Prepare a SQL statement.
Definition: plugin_datacache_sqlite.c:169
sqlite_plugin_del
static enum GNUNET_GenericReturnValue sqlite_plugin_del(void *cls)
Delete the entry with the lowest expiration value from the datacache right now.
Definition: plugin_datacache_sqlite.c:609
get_any
static unsigned int get_any(void *cls, const struct GNUNET_HashCode *key, GNUNET_DATACACHE_Iterator iter, void *iter_cls)
Iterate over the results for a particular key in the datastore.
Definition: plugin_datacache_sqlite.c:261
LOG_STRERROR_FILE
#define LOG_STRERROR_FILE(kind, op, fn)
Definition: plugin_datacache_sqlite.c:34
get_typed
static unsigned int get_typed(void *cls, const struct GNUNET_HashCode *key, enum GNUNET_BLOCK_Type type, GNUNET_DATACACHE_Iterator iter, void *iter_cls)
Iterate over the results for a particular key in the datastore.
Definition: plugin_datacache_sqlite.c:420
libgnunet_plugin_datacache_sqlite_done
void * libgnunet_plugin_datacache_sqlite_done(void *cls)
Exit point from the plugin.
Definition: plugin_datacache_sqlite.c:1006
LOG
#define LOG(kind,...)
Definition: plugin_datacache_sqlite.c:32
sqlite_plugin_get_closest
static unsigned int sqlite_plugin_get_closest(void *cls, const struct GNUNET_HashCode *key, enum GNUNET_BLOCK_Type type, unsigned int num_results, GNUNET_DATACACHE_Iterator iter, void *iter_cls)
Iterate over the results that are "close" to a particular key in the datacache.
Definition: plugin_datacache_sqlite.c:724
GNUNET_BLOCK_Type
GNUNET_BLOCK_Type
WARNING: This header is generated! In order to add DHT block types, you must register them in GANA,...
Definition: gnunet_dht_block_types.h:43
GNUNET_BLOCK_TYPE_ANY
@ GNUNET_BLOCK_TYPE_ANY
Identifier for any block.
Definition: gnunet_dht_block_types.h:49
GNUNET_BLOCK_PluginFunctions::cls
void * cls
Closure for all of the callbacks.
Definition: gnunet_block_plugin.h:258
GNUNET_DATACACHE_Block
Information about a block stored in the datacache.
Definition: gnunet_datacache_lib.h:61
GNUNET_DATACACHE_Block::put_path
const struct GNUNET_DHT_PathElement * put_path
PUT path taken by the block, array of peer identities.
Definition: gnunet_datacache_lib.h:81
GNUNET_DATACACHE_Block::type
enum GNUNET_BLOCK_Type type
Type of the block.
Definition: gnunet_datacache_lib.h:101
GNUNET_DATACACHE_Block::data
const void * data
Actual block data.
Definition: gnunet_datacache_lib.h:86
GNUNET_DATACACHE_Block::ro
enum GNUNET_DHT_RouteOption ro
Options for routing for the block.
Definition: gnunet_datacache_lib.h:106
GNUNET_DATACACHE_Block::trunc_peer
struct GNUNET_PeerIdentity trunc_peer
If the path was truncated, this is the peer ID at which the path was truncated.
Definition: gnunet_datacache_lib.h:76
GNUNET_DATACACHE_Block::key
struct GNUNET_HashCode key
Key of the block.
Definition: gnunet_datacache_lib.h:65
GNUNET_DATACACHE_Block::data_size
size_t data_size
Number of bytes in data.
Definition: gnunet_datacache_lib.h:91
GNUNET_DATACACHE_Block::put_path_length
unsigned int put_path_length
Length of the put_path array.
Definition: gnunet_datacache_lib.h:96
GNUNET_DATACACHE_Block::expiration_time
struct GNUNET_TIME_Absolute expiration_time
When does the block expire?
Definition: gnunet_datacache_lib.h:70
GNUNET_DATACACHE_PluginEnvironment
The datastore service will pass a pointer to a struct of this type as the first and only argument to ...
Definition: gnunet_datacache_plugin.h:69
GNUNET_DATACACHE_PluginEnvironment::cls
void * cls
Closure to use for callbacks.
Definition: gnunet_datacache_plugin.h:83
GNUNET_DATACACHE_PluginFunctions
struct returned by the initialization function of the plugin
Definition: gnunet_datacache_plugin.h:102
GNUNET_DATACACHE_PluginFunctions::cls
void * cls
Closure to pass to all plugin functions.
Definition: gnunet_datacache_plugin.h:106
GNUNET_DHT_PathElement
A (signed) path tracking a block's flow through the DHT is represented by an array of path elements,...
Definition: gnunet_dht_service.h:167
GNUNET_HashCode
A 512-bit hashcode.
Definition: gnunet_common.h:284
GNUNET_SQ_QueryParam
Description of a DB query parameter.
Definition: gnunet_sq_lib.h:56
GNUNET_SQ_ResultSpec
Description of a DB result cell.
Definition: gnunet_sq_lib.h:254
GNUNET_TESTING_PluginFunctions::cls
void * cls
Closure to pass to start_testcase.
Definition: testing_api_loop.h:51
GNUNET_TIME_Absolute
Time for absolute times used by GNUnet, in microseconds.
Definition: gnunet_time_lib.h:54
Plugin
Handle for a plugin.
Definition: block.c:38
Plugin::dbh
sqlite3 * dbh
Handle to the sqlite database.
Definition: plugin_datacache_sqlite.c:57
Plugin::api
struct GNUNET_BLOCK_PluginFunctions * api
Plugin API.
Definition: block.c:47
Plugin::get_any_stmt
sqlite3_stmt * get_any_stmt
Prepared statement for sqlite_plugin_get.
Definition: plugin_datacache_sqlite.c:87
Plugin::num_items
unsigned int num_items
Number of key-value pairs in the database.
Definition: plugin_datacache_postgres.c:56
Plugin::get_stmt
sqlite3_stmt * get_stmt
Prepared statement for sqlite_plugin_get.
Definition: plugin_datacache_sqlite.c:82
Plugin::insert_stmt
sqlite3_stmt * insert_stmt
Prepared statement for sqlite_plugin_put.
Definition: plugin_datacache_sqlite.c:67
Plugin::del_select_stmt
sqlite3_stmt * del_select_stmt
Prepared statement for sqlite_plugin_del.
Definition: plugin_datacache_sqlite.c:92
Plugin::get_count_stmt
sqlite3_stmt * get_count_stmt
Prepared statement for sqlite_plugin_get.
Definition: plugin_datacache_sqlite.c:72
Plugin::del_expired_stmt
sqlite3_stmt * del_expired_stmt
Prepared statement for sqlite_plugin_del.
Definition: plugin_datacache_sqlite.c:97
Plugin::fn
char * fn
Filename used for the DB.
Definition: plugin_datacache_sqlite.c:62
Plugin::get_closest_stmt
sqlite3_stmt * get_closest_stmt
Prepared statement for sqlite_plugin_get_closest.
Definition: plugin_datacache_sqlite.c:107
Plugin::del_stmt
sqlite3_stmt * del_stmt
Prepared statement for sqlite_plugin_del.
Definition: plugin_datacache_sqlite.c:102
Plugin::env
struct GNUNET_DATACACHE_PluginEnvironment * env
Our execution environment.
Definition: plugin_datacache_heap.c:46
Plugin::get_count_any_stmt
sqlite3_stmt * get_count_any_stmt
Prepared statement for sqlite_plugin_get.
Definition: plugin_datacache_sqlite.c:77
Plugin::dbh
struct GNUNET_PQ_Context * dbh
Native Postgres database handle.
Definition: plugin_datacache_postgres.c:51