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1b1d2e6d | 1 | /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2017 Nicira, Inc. |
f85f8ebb BP |
2 | * |
3 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | * you may not use this file except in compliance with the License. | |
5 | * You may obtain a copy of the License at: | |
6 | * | |
7 | * http://www.apache.org/licenses/LICENSE-2.0 | |
8 | * | |
9 | * Unless required by applicable law or agreed to in writing, software | |
10 | * distributed under the License is distributed on an "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | * See the License for the specific language governing permissions and | |
13 | * limitations under the License. | |
14 | */ | |
15 | ||
16 | #include <config.h> | |
17 | ||
18 | #include "ovsdb.h" | |
19 | ||
f38f98a2 IM |
20 | #if HAVE_DECL_MALLOC_TRIM |
21 | #include <malloc.h> | |
22 | #endif | |
23 | ||
0d0f05b9 | 24 | #include "column.h" |
120fb2ca | 25 | #include "file.h" |
009bf21f | 26 | #include "monitor.h" |
ee89ea7b | 27 | #include "openvswitch/json.h" |
f85f8ebb BP |
28 | #include "ovsdb-error.h" |
29 | #include "ovsdb-parser.h" | |
0d0f05b9 | 30 | #include "ovsdb-types.h" |
0d085684 | 31 | #include "simap.h" |
1b1d2e6d | 32 | #include "storage.h" |
f85f8ebb BP |
33 | #include "table.h" |
34 | #include "transaction.h" | |
53178986 | 35 | #include "trigger.h" |
f85f8ebb | 36 | |
1b1d2e6d BP |
37 | #include "openvswitch/vlog.h" |
38 | VLOG_DEFINE_THIS_MODULE(ovsdb); | |
39 | ||
f85f8ebb | 40 | struct ovsdb_schema * |
6aa09313 | 41 | ovsdb_schema_create(const char *name, const char *version, const char *cksum) |
f85f8ebb BP |
42 | { |
43 | struct ovsdb_schema *schema; | |
44 | ||
45 | schema = xzalloc(sizeof *schema); | |
46 | schema->name = xstrdup(name); | |
8159b984 | 47 | schema->version = xstrdup(version); |
6aa09313 | 48 | schema->cksum = xstrdup(cksum); |
f85f8ebb BP |
49 | shash_init(&schema->tables); |
50 | ||
51 | return schema; | |
52 | } | |
53 | ||
58985e09 BP |
54 | struct ovsdb_schema * |
55 | ovsdb_schema_clone(const struct ovsdb_schema *old) | |
56 | { | |
57 | struct ovsdb_schema *new; | |
58 | struct shash_node *node; | |
59 | ||
6aa09313 | 60 | new = ovsdb_schema_create(old->name, old->version, old->cksum); |
58985e09 BP |
61 | SHASH_FOR_EACH (node, &old->tables) { |
62 | const struct ovsdb_table_schema *ts = node->data; | |
63 | ||
64 | shash_add(&new->tables, node->name, ovsdb_table_schema_clone(ts)); | |
65 | } | |
66 | return new; | |
67 | } | |
68 | ||
f85f8ebb BP |
69 | void |
70 | ovsdb_schema_destroy(struct ovsdb_schema *schema) | |
71 | { | |
72 | struct shash_node *node; | |
73 | ||
271915d3 BP |
74 | if (!schema) { |
75 | return; | |
76 | } | |
77 | ||
f85f8ebb BP |
78 | SHASH_FOR_EACH (node, &schema->tables) { |
79 | ovsdb_table_schema_destroy(node->data); | |
80 | } | |
81 | shash_destroy(&schema->tables); | |
f85f8ebb | 82 | free(schema->name); |
8159b984 | 83 | free(schema->version); |
6aa09313 | 84 | free(schema->cksum); |
f85f8ebb BP |
85 | free(schema); |
86 | } | |
87 | ||
88 | struct ovsdb_error * | |
89 | ovsdb_schema_from_file(const char *file_name, struct ovsdb_schema **schemap) | |
90 | { | |
91 | struct ovsdb_schema *schema; | |
92 | struct ovsdb_error *error; | |
93 | struct json *json; | |
94 | ||
95 | *schemap = NULL; | |
96 | json = json_from_file(file_name); | |
97 | if (json->type == JSON_STRING) { | |
98 | error = ovsdb_error("failed to read schema", | |
99 | "\"%s\" could not be read as JSON (%s)", | |
100 | file_name, json_string(json)); | |
101 | json_destroy(json); | |
102 | return error; | |
103 | } | |
104 | ||
105 | error = ovsdb_schema_from_json(json, &schema); | |
e084f690 | 106 | json_destroy(json); |
f85f8ebb | 107 | if (error) { |
f85f8ebb BP |
108 | return ovsdb_wrap_error(error, |
109 | "failed to parse \"%s\" as ovsdb schema", | |
110 | file_name); | |
111 | } | |
112 | ||
113 | *schemap = schema; | |
114 | return NULL; | |
115 | } | |
116 | ||
cab50449 | 117 | static struct ovsdb_error * OVS_WARN_UNUSED_RESULT |
42a49b96 | 118 | ovsdb_schema_check_ref_table(struct ovsdb_column *column, |
0d0f05b9 BP |
119 | const struct shash *tables, |
120 | const struct ovsdb_base_type *base, | |
121 | const char *base_name) | |
122 | { | |
42a49b96 BP |
123 | struct ovsdb_table_schema *refTable; |
124 | ||
fa37affa | 125 | if (base->type != OVSDB_TYPE_UUID || !base->uuid.refTableName) { |
42a49b96 BP |
126 | return NULL; |
127 | } | |
128 | ||
fa37affa | 129 | refTable = shash_find_data(tables, base->uuid.refTableName); |
42a49b96 | 130 | if (!refTable) { |
0d0f05b9 BP |
131 | return ovsdb_syntax_error(NULL, NULL, |
132 | "column %s %s refers to undefined table %s", | |
133 | column->name, base_name, | |
fa37affa | 134 | base->uuid.refTableName); |
0d0f05b9 | 135 | } |
42a49b96 BP |
136 | |
137 | if (ovsdb_base_type_is_strong_ref(base) && !refTable->is_root) { | |
138 | /* We cannot allow a strong reference to a non-root table to be | |
139 | * ephemeral: if it is the only reference to a row, then replaying the | |
140 | * database log from disk will cause the referenced row to be deleted, | |
141 | * even though it did exist in memory. If there are references to that | |
142 | * row later in the log (to modify it, to delete it, or just to point | |
143 | * to it), then this will yield a transaction error. */ | |
144 | column->persistent = true; | |
145 | } | |
146 | ||
147 | return NULL; | |
0d0f05b9 BP |
148 | } |
149 | ||
1b1d2e6d BP |
150 | /* Attempts to parse 's' as a version string in the format "<x>.<y>.<z>". If |
151 | * successful, stores each part of the version into 'version->x', 'version->y', | |
152 | * and 'version->z', respectively, and returns true. On failure, returns | |
153 | * false. */ | |
154 | bool | |
155 | ovsdb_parse_version(const char *s, struct ovsdb_version *version) | |
8159b984 BP |
156 | { |
157 | int n = -1; | |
1b1d2e6d BP |
158 | return (ovs_scan(s, "%u.%u.%u%n", &version->x, &version->y, &version->z, |
159 | &n) | |
160 | && n != -1 && s[n] == '\0'); | |
161 | } | |
162 | ||
163 | /* Returns true if 's' is a version string in the format "<x>.<y>.<z>", | |
164 | * otherwie false. */ | |
165 | bool | |
166 | ovsdb_is_valid_version(const char *s) | |
167 | { | |
168 | struct ovsdb_version version; | |
169 | return ovsdb_parse_version(s, &version); | |
8159b984 BP |
170 | } |
171 | ||
c5f341ab BP |
172 | /* Returns the number of tables in 'schema''s root set. */ |
173 | static size_t | |
174 | root_set_size(const struct ovsdb_schema *schema) | |
175 | { | |
176 | struct shash_node *node; | |
85dcedff | 177 | size_t n_root = 0; |
c5f341ab BP |
178 | |
179 | SHASH_FOR_EACH (node, &schema->tables) { | |
180 | struct ovsdb_table_schema *table = node->data; | |
181 | ||
182 | n_root += table->is_root; | |
183 | } | |
184 | return n_root; | |
185 | } | |
186 | ||
f85f8ebb | 187 | struct ovsdb_error * |
53178986 | 188 | ovsdb_schema_from_json(const struct json *json, struct ovsdb_schema **schemap) |
f85f8ebb BP |
189 | { |
190 | struct ovsdb_schema *schema; | |
6aa09313 | 191 | const struct json *name, *tables, *version_json, *cksum; |
f85f8ebb BP |
192 | struct ovsdb_error *error; |
193 | struct shash_node *node; | |
194 | struct ovsdb_parser parser; | |
8159b984 | 195 | const char *version; |
f85f8ebb BP |
196 | |
197 | *schemap = NULL; | |
198 | ||
199 | ovsdb_parser_init(&parser, json, "database schema"); | |
200 | name = ovsdb_parser_member(&parser, "name", OP_ID); | |
8159b984 BP |
201 | version_json = ovsdb_parser_member(&parser, "version", |
202 | OP_STRING | OP_OPTIONAL); | |
6aa09313 | 203 | cksum = ovsdb_parser_member(&parser, "cksum", OP_STRING | OP_OPTIONAL); |
f85f8ebb BP |
204 | tables = ovsdb_parser_member(&parser, "tables", OP_OBJECT); |
205 | error = ovsdb_parser_finish(&parser); | |
206 | if (error) { | |
207 | return error; | |
208 | } | |
209 | ||
8159b984 BP |
210 | if (version_json) { |
211 | version = json_string(version_json); | |
1b1d2e6d | 212 | if (!ovsdb_is_valid_version(version)) { |
8159b984 BP |
213 | return ovsdb_syntax_error(json, NULL, "schema version \"%s\" not " |
214 | "in format x.y.z", version); | |
215 | } | |
216 | } else { | |
217 | /* Backward compatibility with old databases. */ | |
218 | version = ""; | |
219 | } | |
220 | ||
6aa09313 BP |
221 | schema = ovsdb_schema_create(json_string(name), version, |
222 | cksum ? json_string(cksum) : ""); | |
f85f8ebb BP |
223 | SHASH_FOR_EACH (node, json_object(tables)) { |
224 | struct ovsdb_table_schema *table; | |
225 | ||
226 | if (node->name[0] == '_') { | |
227 | error = ovsdb_syntax_error(json, NULL, "names beginning with " | |
228 | "\"_\" are reserved"); | |
b966380b BP |
229 | } else if (!ovsdb_parser_is_id(node->name)) { |
230 | error = ovsdb_syntax_error(json, NULL, "name must be a valid id"); | |
f85f8ebb BP |
231 | } else { |
232 | error = ovsdb_table_schema_from_json(node->data, node->name, | |
233 | &table); | |
234 | } | |
235 | if (error) { | |
236 | ovsdb_schema_destroy(schema); | |
237 | return error; | |
238 | } | |
239 | ||
240 | shash_add(&schema->tables, table->name, table); | |
241 | } | |
0d0f05b9 | 242 | |
42a49b96 BP |
243 | /* "isRoot" was not part of the original schema definition. Before it was |
244 | * added, there was no support for garbage collection. So, for backward | |
245 | * compatibility, if the root set is empty then assume that every table is | |
246 | * in the root set. */ | |
247 | if (root_set_size(schema) == 0) { | |
248 | SHASH_FOR_EACH (node, &schema->tables) { | |
249 | struct ovsdb_table_schema *table = node->data; | |
250 | ||
251 | table->is_root = true; | |
252 | } | |
253 | } | |
254 | ||
255 | /* Validate that all refTables refer to the names of tables that exist. | |
256 | * | |
257 | * Also force certain columns to be persistent, as explained in | |
258 | * ovsdb_schema_check_ref_table(). This requires 'is_root' to be known, so | |
259 | * this must follow the loop updating 'is_root' above. */ | |
0d0f05b9 BP |
260 | SHASH_FOR_EACH (node, &schema->tables) { |
261 | struct ovsdb_table_schema *table = node->data; | |
262 | struct shash_node *node2; | |
263 | ||
264 | SHASH_FOR_EACH (node2, &table->columns) { | |
265 | struct ovsdb_column *column = node2->data; | |
266 | ||
267 | error = ovsdb_schema_check_ref_table(column, &schema->tables, | |
268 | &column->type.key, "key"); | |
269 | if (!error) { | |
270 | error = ovsdb_schema_check_ref_table(column, &schema->tables, | |
271 | &column->type.value, | |
272 | "value"); | |
273 | } | |
274 | if (error) { | |
275 | ovsdb_schema_destroy(schema); | |
276 | return error; | |
277 | } | |
278 | } | |
279 | } | |
280 | ||
f85f8ebb | 281 | *schemap = schema; |
e3c17733 | 282 | return NULL; |
f85f8ebb BP |
283 | } |
284 | ||
285 | struct json * | |
286 | ovsdb_schema_to_json(const struct ovsdb_schema *schema) | |
287 | { | |
288 | struct json *json, *tables; | |
289 | struct shash_node *node; | |
c5f341ab | 290 | bool default_is_root; |
f85f8ebb BP |
291 | |
292 | json = json_object_create(); | |
293 | json_object_put_string(json, "name", schema->name); | |
8159b984 BP |
294 | if (schema->version[0]) { |
295 | json_object_put_string(json, "version", schema->version); | |
296 | } | |
6aa09313 BP |
297 | if (schema->cksum[0]) { |
298 | json_object_put_string(json, "cksum", schema->cksum); | |
299 | } | |
f85f8ebb | 300 | |
c5f341ab BP |
301 | /* "isRoot" was not part of the original schema definition. Before it was |
302 | * added, there was no support for garbage collection. So, for backward | |
303 | * compatibility, if every table is in the root set then do not output | |
304 | * "isRoot" in table schemas. */ | |
305 | default_is_root = root_set_size(schema) == shash_count(&schema->tables); | |
306 | ||
f85f8ebb BP |
307 | tables = json_object_create(); |
308 | ||
309 | SHASH_FOR_EACH (node, &schema->tables) { | |
310 | struct ovsdb_table_schema *table = node->data; | |
311 | json_object_put(tables, table->name, | |
c5f341ab | 312 | ovsdb_table_schema_to_json(table, default_is_root)); |
f85f8ebb BP |
313 | } |
314 | json_object_put(json, "tables", tables); | |
315 | ||
316 | return json; | |
317 | } | |
403e3a25 BP |
318 | |
319 | /* Returns true if 'a' and 'b' specify equivalent schemas, false if they | |
320 | * differ. */ | |
321 | bool | |
322 | ovsdb_schema_equal(const struct ovsdb_schema *a, | |
323 | const struct ovsdb_schema *b) | |
324 | { | |
325 | /* This implementation is simple, stupid, and slow, but I doubt that it | |
326 | * will ever require much maintenance. */ | |
327 | struct json *ja = ovsdb_schema_to_json(a); | |
328 | struct json *jb = ovsdb_schema_to_json(b); | |
329 | bool equals = json_equal(ja, jb); | |
330 | json_destroy(ja); | |
331 | json_destroy(jb); | |
332 | ||
333 | return equals; | |
334 | } | |
1b1d2e6d BP |
335 | |
336 | struct ovsdb_error * OVS_WARN_UNUSED_RESULT | |
337 | ovsdb_schema_check_for_ephemeral_columns(const struct ovsdb_schema *schema) | |
338 | { | |
339 | struct shash_node *node; | |
340 | SHASH_FOR_EACH (node, &schema->tables) { | |
341 | struct ovsdb_table_schema *table = node->data; | |
342 | struct shash_node *node2; | |
343 | ||
344 | SHASH_FOR_EACH (node2, &table->columns) { | |
345 | struct ovsdb_column *column = node2->data; | |
346 | ||
347 | if (column->index >= OVSDB_N_STD_COLUMNS && !column->persistent) { | |
348 | return ovsdb_syntax_error( | |
349 | NULL, NULL, "Table %s column %s is ephemeral but " | |
350 | "clustered databases do not support ephemeral columns.", | |
351 | table->name, column->name); | |
352 | } | |
353 | } | |
354 | } | |
355 | return NULL; | |
356 | } | |
357 | ||
358 | void | |
359 | ovsdb_schema_persist_ephemeral_columns(struct ovsdb_schema *schema, | |
360 | const char *filename) | |
361 | { | |
362 | int n = 0; | |
363 | const char *example_table = NULL; | |
364 | const char *example_column = NULL; | |
365 | ||
366 | struct shash_node *node; | |
367 | SHASH_FOR_EACH (node, &schema->tables) { | |
368 | struct ovsdb_table_schema *table = node->data; | |
369 | struct shash_node *node2; | |
370 | ||
371 | SHASH_FOR_EACH (node2, &table->columns) { | |
372 | struct ovsdb_column *column = node2->data; | |
373 | ||
374 | if (column->index >= OVSDB_N_STD_COLUMNS && !column->persistent) { | |
375 | column->persistent = true; | |
376 | example_table = table->name; | |
377 | example_column = column->name; | |
378 | n++; | |
379 | } | |
380 | } | |
381 | } | |
382 | ||
383 | if (n) { | |
384 | VLOG_WARN("%s: changed %d columns in '%s' database from ephemeral to " | |
385 | "persistent, including '%s' column in '%s' table, because " | |
386 | "clusters do not support ephemeral columns", | |
387 | filename, n, schema->name, example_column, example_table); | |
388 | } | |
389 | } | |
f85f8ebb | 390 | \f |
0d0f05b9 BP |
391 | static void |
392 | ovsdb_set_ref_table(const struct shash *tables, | |
393 | struct ovsdb_base_type *base) | |
394 | { | |
fa37affa | 395 | if (base->type == OVSDB_TYPE_UUID && base->uuid.refTableName) { |
0d0f05b9 BP |
396 | struct ovsdb_table *table; |
397 | ||
fa37affa BP |
398 | table = shash_find_data(tables, base->uuid.refTableName); |
399 | base->uuid.refTable = table; | |
0d0f05b9 BP |
400 | } |
401 | } | |
402 | ||
1b1d2e6d BP |
403 | /* Creates and returns a new ovsdb based on 'schema' and 'storage' and takes |
404 | * ownership of both. | |
405 | * | |
406 | * At least one of the arguments must be nonnull. */ | |
f85f8ebb | 407 | struct ovsdb * |
1b1d2e6d | 408 | ovsdb_create(struct ovsdb_schema *schema, struct ovsdb_storage *storage) |
f85f8ebb BP |
409 | { |
410 | struct shash_node *node; | |
411 | struct ovsdb *db; | |
412 | ||
1b1d2e6d BP |
413 | db = xzalloc(sizeof *db); |
414 | db->name = xstrdup(schema | |
415 | ? schema->name | |
416 | : ovsdb_storage_get_name(storage)); | |
f85f8ebb | 417 | db->schema = schema; |
1b1d2e6d | 418 | db->storage = storage; |
009bf21f | 419 | ovs_list_init(&db->monitors); |
417e7e66 | 420 | ovs_list_init(&db->triggers); |
bb66a0a6 | 421 | db->run_triggers_now = db->run_triggers = false; |
f85f8ebb BP |
422 | |
423 | shash_init(&db->tables); | |
1b1d2e6d BP |
424 | if (schema) { |
425 | SHASH_FOR_EACH (node, &schema->tables) { | |
426 | struct ovsdb_table_schema *ts = node->data; | |
427 | shash_add(&db->tables, node->name, ovsdb_table_create(ts)); | |
428 | } | |
f85f8ebb | 429 | |
1b1d2e6d BP |
430 | /* Set all the refTables. */ |
431 | SHASH_FOR_EACH (node, &schema->tables) { | |
432 | struct ovsdb_table_schema *table = node->data; | |
433 | struct shash_node *node2; | |
0d0f05b9 | 434 | |
1b1d2e6d BP |
435 | SHASH_FOR_EACH (node2, &table->columns) { |
436 | struct ovsdb_column *column = node2->data; | |
0d0f05b9 | 437 | |
1b1d2e6d BP |
438 | ovsdb_set_ref_table(&db->tables, &column->type.key); |
439 | ovsdb_set_ref_table(&db->tables, &column->type.value); | |
440 | } | |
0d0f05b9 BP |
441 | } |
442 | } | |
443 | ||
d6db7b3c LR |
444 | /* Use RBAC roles table if present. */ |
445 | db->rbac_role = ovsdb_get_table(db, "RBAC_Role"); | |
446 | ||
f85f8ebb BP |
447 | return db; |
448 | } | |
449 | ||
f85f8ebb BP |
450 | void |
451 | ovsdb_destroy(struct ovsdb *db) | |
452 | { | |
453 | if (db) { | |
454 | struct shash_node *node; | |
455 | ||
120fb2ca | 456 | /* Close the log. */ |
1b1d2e6d | 457 | ovsdb_storage_close(db->storage); |
120fb2ca | 458 | |
009bf21f BP |
459 | /* Remove all the monitors. */ |
460 | ovsdb_monitors_remove(db); | |
bd06962a | 461 | |
695e8150 HZ |
462 | /* Destroy txn history. */ |
463 | ovsdb_txn_history_destroy(db); | |
464 | ||
1b1d2e6d BP |
465 | /* The caller must ensure that no triggers remain. */ |
466 | ovs_assert(ovs_list_is_empty(&db->triggers)); | |
467 | ||
f85f8ebb BP |
468 | /* Delete all the tables. This also deletes their schemas. */ |
469 | SHASH_FOR_EACH (node, &db->tables) { | |
470 | struct ovsdb_table *table = node->data; | |
471 | ovsdb_table_destroy(table); | |
472 | } | |
473 | shash_destroy(&db->tables); | |
474 | ||
1248fcd2 BP |
475 | /* The schemas, but not the table that points to them, were deleted in |
476 | * the previous step, so we need to clear out the table. We can't | |
477 | * destroy the table, because ovsdb_schema_destroy() will do that. */ | |
1b1d2e6d BP |
478 | if (db->schema) { |
479 | shash_clear(&db->schema->tables); | |
480 | ovsdb_schema_destroy(db->schema); | |
481 | } | |
f85f8ebb | 482 | |
1b1d2e6d | 483 | free(db->name); |
f85f8ebb BP |
484 | free(db); |
485 | } | |
486 | } | |
487 | ||
0d085684 BP |
488 | /* Adds some memory usage statistics for 'db' into 'usage', for use with |
489 | * memory_report(). */ | |
490 | void | |
491 | ovsdb_get_memory_usage(const struct ovsdb *db, struct simap *usage) | |
492 | { | |
1b1d2e6d BP |
493 | if (!db->schema) { |
494 | return; | |
495 | } | |
496 | ||
0d085684 BP |
497 | const struct shash_node *node; |
498 | unsigned int cells = 0; | |
499 | ||
500 | SHASH_FOR_EACH (node, &db->tables) { | |
501 | const struct ovsdb_table *table = node->data; | |
502 | unsigned int n_columns = shash_count(&table->schema->columns); | |
503 | unsigned int n_rows = hmap_count(&table->rows); | |
504 | ||
505 | cells += n_rows * n_columns; | |
506 | } | |
507 | ||
508 | simap_increase(usage, "cells", cells); | |
3423cd97 IM |
509 | |
510 | if (db->storage) { | |
511 | ovsdb_storage_get_memory_usage(db->storage, usage); | |
512 | } | |
0d085684 BP |
513 | } |
514 | ||
f85f8ebb BP |
515 | struct ovsdb_table * |
516 | ovsdb_get_table(const struct ovsdb *db, const char *name) | |
517 | { | |
518 | return shash_find_data(&db->tables, name); | |
519 | } | |
1b1d2e6d BP |
520 | |
521 | struct ovsdb_error * OVS_WARN_UNUSED_RESULT | |
f38f98a2 | 522 | ovsdb_snapshot(struct ovsdb *db, bool trim_memory OVS_UNUSED) |
1b1d2e6d BP |
523 | { |
524 | if (!db->storage) { | |
525 | return NULL; | |
526 | } | |
527 | ||
528 | struct json *schema = ovsdb_schema_to_json(db->schema); | |
529 | struct json *data = ovsdb_to_txn_json(db, "compacting database online"); | |
530 | struct ovsdb_error *error = ovsdb_storage_store_snapshot(db->storage, | |
531 | schema, data); | |
532 | json_destroy(schema); | |
533 | json_destroy(data); | |
f38f98a2 IM |
534 | |
535 | #if HAVE_DECL_MALLOC_TRIM | |
536 | if (!error && trim_memory) { | |
537 | malloc_trim(0); | |
538 | } | |
539 | #endif | |
1b1d2e6d BP |
540 | return error; |
541 | } | |
542 | ||
543 | void | |
544 | ovsdb_replace(struct ovsdb *dst, struct ovsdb *src) | |
545 | { | |
546 | /* Cancel monitors. */ | |
547 | ovsdb_monitor_prereplace_db(dst); | |
548 | ||
549 | /* Cancel triggers. */ | |
550 | struct ovsdb_trigger *trigger, *next; | |
551 | LIST_FOR_EACH_SAFE (trigger, next, node, &dst->triggers) { | |
552 | ovsdb_trigger_prereplace_db(trigger); | |
553 | } | |
554 | ||
695e8150 HZ |
555 | /* Destroy txn history. */ |
556 | ovsdb_txn_history_destroy(dst); | |
557 | ||
1b1d2e6d BP |
558 | struct ovsdb_schema *tmp_schema = dst->schema; |
559 | dst->schema = src->schema; | |
560 | src->schema = tmp_schema; | |
561 | ||
562 | shash_swap(&dst->tables, &src->tables); | |
563 | ||
564 | dst->rbac_role = ovsdb_get_table(dst, "RBAC_Role"); | |
565 | ||
566 | ovsdb_destroy(src); | |
567 | } |