Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * publicationcmds.c
4 : * publication manipulation
5 : *
6 : * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
7 : * Portions Copyright (c) 1994, Regents of the University of California
8 : *
9 : * IDENTIFICATION
10 : * src/backend/commands/publicationcmds.c
11 : *
12 : *-------------------------------------------------------------------------
13 : */
14 :
15 : #include "postgres.h"
16 :
17 : #include "access/htup_details.h"
18 : #include "access/table.h"
19 : #include "access/xact.h"
20 : #include "catalog/catalog.h"
21 : #include "catalog/indexing.h"
22 : #include "catalog/namespace.h"
23 : #include "catalog/objectaccess.h"
24 : #include "catalog/objectaddress.h"
25 : #include "catalog/pg_database.h"
26 : #include "catalog/pg_inherits.h"
27 : #include "catalog/pg_namespace.h"
28 : #include "catalog/pg_proc.h"
29 : #include "catalog/pg_publication.h"
30 : #include "catalog/pg_publication_namespace.h"
31 : #include "catalog/pg_publication_rel.h"
32 : #include "commands/defrem.h"
33 : #include "commands/event_trigger.h"
34 : #include "commands/publicationcmds.h"
35 : #include "miscadmin.h"
36 : #include "nodes/nodeFuncs.h"
37 : #include "parser/parse_clause.h"
38 : #include "parser/parse_collate.h"
39 : #include "parser/parse_relation.h"
40 : #include "rewrite/rewriteHandler.h"
41 : #include "storage/lmgr.h"
42 : #include "utils/acl.h"
43 : #include "utils/builtins.h"
44 : #include "utils/inval.h"
45 : #include "utils/lsyscache.h"
46 : #include "utils/rel.h"
47 : #include "utils/syscache.h"
48 : #include "utils/varlena.h"
49 :
50 :
51 : /*
52 : * Information used to validate the columns in the row filter expression. See
53 : * contain_invalid_rfcolumn_walker for details.
54 : */
55 : typedef struct rf_context
56 : {
57 : Bitmapset *bms_replident; /* bitset of replica identity columns */
58 : bool pubviaroot; /* true if we are validating the parent
59 : * relation's row filter */
60 : Oid relid; /* relid of the relation */
61 : Oid parentid; /* relid of the parent relation */
62 : } rf_context;
63 :
64 : static List *OpenTableList(List *tables);
65 : static void CloseTableList(List *rels);
66 : static void LockSchemaList(List *schemalist);
67 : static void PublicationAddTables(Oid pubid, List *rels, bool if_not_exists,
68 : AlterPublicationStmt *stmt);
69 : static void PublicationDropTables(Oid pubid, List *rels, bool missing_ok);
70 : static void PublicationAddSchemas(Oid pubid, List *schemas, bool if_not_exists,
71 : AlterPublicationStmt *stmt);
72 : static void PublicationDropSchemas(Oid pubid, List *schemas, bool missing_ok);
73 : static char defGetGeneratedColsOption(DefElem *def);
74 :
75 :
76 : static void
77 1008 : parse_publication_options(ParseState *pstate,
78 : List *options,
79 : bool *publish_given,
80 : PublicationActions *pubactions,
81 : bool *publish_via_partition_root_given,
82 : bool *publish_via_partition_root,
83 : bool *publish_generated_columns_given,
84 : char *publish_generated_columns)
85 : {
86 : ListCell *lc;
87 :
88 1008 : *publish_given = false;
89 1008 : *publish_via_partition_root_given = false;
90 1008 : *publish_generated_columns_given = false;
91 :
92 : /* defaults */
93 1008 : pubactions->pubinsert = true;
94 1008 : pubactions->pubupdate = true;
95 1008 : pubactions->pubdelete = true;
96 1008 : pubactions->pubtruncate = true;
97 1008 : *publish_via_partition_root = false;
98 1008 : *publish_generated_columns = PUBLISH_GENCOLS_NONE;
99 :
100 : /* Parse options */
101 1372 : foreach(lc, options)
102 : {
103 400 : DefElem *defel = (DefElem *) lfirst(lc);
104 :
105 400 : if (strcmp(defel->defname, "publish") == 0)
106 : {
107 : char *publish;
108 : List *publish_list;
109 : ListCell *lc2;
110 :
111 140 : if (*publish_given)
112 0 : errorConflictingDefElem(defel, pstate);
113 :
114 : /*
115 : * If publish option was given only the explicitly listed actions
116 : * should be published.
117 : */
118 140 : pubactions->pubinsert = false;
119 140 : pubactions->pubupdate = false;
120 140 : pubactions->pubdelete = false;
121 140 : pubactions->pubtruncate = false;
122 :
123 140 : *publish_given = true;
124 140 : publish = defGetString(defel);
125 :
126 140 : if (!SplitIdentifierString(publish, ',', &publish_list))
127 0 : ereport(ERROR,
128 : (errcode(ERRCODE_SYNTAX_ERROR),
129 : errmsg("invalid list syntax in parameter \"%s\"",
130 : "publish")));
131 :
132 : /* Process the option list. */
133 334 : foreach(lc2, publish_list)
134 : {
135 200 : char *publish_opt = (char *) lfirst(lc2);
136 :
137 200 : if (strcmp(publish_opt, "insert") == 0)
138 124 : pubactions->pubinsert = true;
139 76 : else if (strcmp(publish_opt, "update") == 0)
140 30 : pubactions->pubupdate = true;
141 46 : else if (strcmp(publish_opt, "delete") == 0)
142 20 : pubactions->pubdelete = true;
143 26 : else if (strcmp(publish_opt, "truncate") == 0)
144 20 : pubactions->pubtruncate = true;
145 : else
146 6 : ereport(ERROR,
147 : (errcode(ERRCODE_SYNTAX_ERROR),
148 : errmsg("unrecognized value for publication option \"%s\": \"%s\"",
149 : "publish", publish_opt)));
150 : }
151 : }
152 260 : else if (strcmp(defel->defname, "publish_via_partition_root") == 0)
153 : {
154 172 : if (*publish_via_partition_root_given)
155 6 : errorConflictingDefElem(defel, pstate);
156 166 : *publish_via_partition_root_given = true;
157 166 : *publish_via_partition_root = defGetBoolean(defel);
158 : }
159 88 : else if (strcmp(defel->defname, "publish_generated_columns") == 0)
160 : {
161 82 : if (*publish_generated_columns_given)
162 6 : errorConflictingDefElem(defel, pstate);
163 76 : *publish_generated_columns_given = true;
164 76 : *publish_generated_columns = defGetGeneratedColsOption(defel);
165 : }
166 : else
167 6 : ereport(ERROR,
168 : (errcode(ERRCODE_SYNTAX_ERROR),
169 : errmsg("unrecognized publication parameter: \"%s\"", defel->defname)));
170 : }
171 972 : }
172 :
173 : /*
174 : * Convert the PublicationObjSpecType list into schema oid list and
175 : * PublicationTable list.
176 : */
177 : static void
178 1698 : ObjectsInPublicationToOids(List *pubobjspec_list, ParseState *pstate,
179 : List **rels, List **schemas)
180 : {
181 : ListCell *cell;
182 : PublicationObjSpec *pubobj;
183 :
184 1698 : if (!pubobjspec_list)
185 104 : return;
186 :
187 3382 : foreach(cell, pubobjspec_list)
188 : {
189 : Oid schemaid;
190 : List *search_path;
191 :
192 1824 : pubobj = (PublicationObjSpec *) lfirst(cell);
193 :
194 1824 : switch (pubobj->pubobjtype)
195 : {
196 1428 : case PUBLICATIONOBJ_TABLE:
197 1428 : *rels = lappend(*rels, pubobj->pubtable);
198 1428 : break;
199 372 : case PUBLICATIONOBJ_TABLES_IN_SCHEMA:
200 372 : schemaid = get_namespace_oid(pubobj->name, false);
201 :
202 : /* Filter out duplicates if user specifies "sch1, sch1" */
203 342 : *schemas = list_append_unique_oid(*schemas, schemaid);
204 342 : break;
205 24 : case PUBLICATIONOBJ_TABLES_IN_CUR_SCHEMA:
206 24 : search_path = fetch_search_path(false);
207 24 : if (search_path == NIL) /* nothing valid in search_path? */
208 6 : ereport(ERROR,
209 : errcode(ERRCODE_UNDEFINED_SCHEMA),
210 : errmsg("no schema has been selected for CURRENT_SCHEMA"));
211 :
212 18 : schemaid = linitial_oid(search_path);
213 18 : list_free(search_path);
214 :
215 : /* Filter out duplicates if user specifies "sch1, sch1" */
216 18 : *schemas = list_append_unique_oid(*schemas, schemaid);
217 18 : break;
218 0 : default:
219 : /* shouldn't happen */
220 0 : elog(ERROR, "invalid publication object type %d", pubobj->pubobjtype);
221 : break;
222 : }
223 : }
224 : }
225 :
226 : /*
227 : * Returns true if any of the columns used in the row filter WHERE expression is
228 : * not part of REPLICA IDENTITY, false otherwise.
229 : */
230 : static bool
231 258 : contain_invalid_rfcolumn_walker(Node *node, rf_context *context)
232 : {
233 258 : if (node == NULL)
234 0 : return false;
235 :
236 258 : if (IsA(node, Var))
237 : {
238 104 : Var *var = (Var *) node;
239 104 : AttrNumber attnum = var->varattno;
240 :
241 : /*
242 : * If pubviaroot is true, we are validating the row filter of the
243 : * parent table, but the bitmap contains the replica identity
244 : * information of the child table. So, get the column number of the
245 : * child table as parent and child column order could be different.
246 : */
247 104 : if (context->pubviaroot)
248 : {
249 16 : char *colname = get_attname(context->parentid, attnum, false);
250 :
251 16 : attnum = get_attnum(context->relid, colname);
252 : }
253 :
254 104 : if (!bms_is_member(attnum - FirstLowInvalidHeapAttributeNumber,
255 104 : context->bms_replident))
256 60 : return true;
257 : }
258 :
259 198 : return expression_tree_walker(node, contain_invalid_rfcolumn_walker,
260 : context);
261 : }
262 :
263 : /*
264 : * Check if all columns referenced in the filter expression are part of the
265 : * REPLICA IDENTITY index or not.
266 : *
267 : * Returns true if any invalid column is found.
268 : */
269 : bool
270 726 : pub_rf_contains_invalid_column(Oid pubid, Relation relation, List *ancestors,
271 : bool pubviaroot)
272 : {
273 : HeapTuple rftuple;
274 726 : Oid relid = RelationGetRelid(relation);
275 726 : Oid publish_as_relid = RelationGetRelid(relation);
276 726 : bool result = false;
277 : Datum rfdatum;
278 : bool rfisnull;
279 :
280 : /*
281 : * FULL means all columns are in the REPLICA IDENTITY, so all columns are
282 : * allowed in the row filter and we can skip the validation.
283 : */
284 726 : if (relation->rd_rel->relreplident == REPLICA_IDENTITY_FULL)
285 198 : return false;
286 :
287 : /*
288 : * For a partition, if pubviaroot is true, find the topmost ancestor that
289 : * is published via this publication as we need to use its row filter
290 : * expression to filter the partition's changes.
291 : *
292 : * Note that even though the row filter used is for an ancestor, the
293 : * REPLICA IDENTITY used will be for the actual child table.
294 : */
295 528 : if (pubviaroot && relation->rd_rel->relispartition)
296 : {
297 : publish_as_relid
298 108 : = GetTopMostAncestorInPublication(pubid, ancestors, NULL);
299 :
300 108 : if (!OidIsValid(publish_as_relid))
301 6 : publish_as_relid = relid;
302 : }
303 :
304 528 : rftuple = SearchSysCache2(PUBLICATIONRELMAP,
305 : ObjectIdGetDatum(publish_as_relid),
306 : ObjectIdGetDatum(pubid));
307 :
308 528 : if (!HeapTupleIsValid(rftuple))
309 56 : return false;
310 :
311 472 : rfdatum = SysCacheGetAttr(PUBLICATIONRELMAP, rftuple,
312 : Anum_pg_publication_rel_prqual,
313 : &rfisnull);
314 :
315 472 : if (!rfisnull)
316 : {
317 102 : rf_context context = {0};
318 : Node *rfnode;
319 102 : Bitmapset *bms = NULL;
320 :
321 102 : context.pubviaroot = pubviaroot;
322 102 : context.parentid = publish_as_relid;
323 102 : context.relid = relid;
324 :
325 : /* Remember columns that are part of the REPLICA IDENTITY */
326 102 : bms = RelationGetIndexAttrBitmap(relation,
327 : INDEX_ATTR_BITMAP_IDENTITY_KEY);
328 :
329 102 : context.bms_replident = bms;
330 102 : rfnode = stringToNode(TextDatumGetCString(rfdatum));
331 102 : result = contain_invalid_rfcolumn_walker(rfnode, &context);
332 : }
333 :
334 472 : ReleaseSysCache(rftuple);
335 :
336 472 : return result;
337 : }
338 :
339 : /*
340 : * Check for invalid columns in the publication table definition.
341 : *
342 : * This function evaluates two conditions:
343 : *
344 : * 1. Ensures that all columns referenced in the REPLICA IDENTITY are covered
345 : * by the column list. If any column is missing, *invalid_column_list is set
346 : * to true.
347 : * 2. Ensures that all the generated columns referenced in the REPLICA IDENTITY
348 : * are published, either by being explicitly named in the column list or, if
349 : * no column list is specified, by setting the option
350 : * publish_generated_columns to stored. If any unpublished
351 : * generated column is found, *invalid_gen_col is set to true.
352 : *
353 : * Returns true if any of the above conditions are not met.
354 : */
355 : bool
356 942 : pub_contains_invalid_column(Oid pubid, Relation relation, List *ancestors,
357 : bool pubviaroot, char pubgencols_type,
358 : bool *invalid_column_list,
359 : bool *invalid_gen_col)
360 : {
361 942 : Oid relid = RelationGetRelid(relation);
362 942 : Oid publish_as_relid = RelationGetRelid(relation);
363 : Bitmapset *idattrs;
364 942 : Bitmapset *columns = NULL;
365 942 : TupleDesc desc = RelationGetDescr(relation);
366 : Publication *pub;
367 : int x;
368 :
369 942 : *invalid_column_list = false;
370 942 : *invalid_gen_col = false;
371 :
372 : /*
373 : * For a partition, if pubviaroot is true, find the topmost ancestor that
374 : * is published via this publication as we need to use its column list for
375 : * the changes.
376 : *
377 : * Note that even though the column list used is for an ancestor, the
378 : * REPLICA IDENTITY used will be for the actual child table.
379 : */
380 942 : if (pubviaroot && relation->rd_rel->relispartition)
381 : {
382 160 : publish_as_relid = GetTopMostAncestorInPublication(pubid, ancestors, NULL);
383 :
384 160 : if (!OidIsValid(publish_as_relid))
385 36 : publish_as_relid = relid;
386 : }
387 :
388 : /* Fetch the column list */
389 942 : pub = GetPublication(pubid);
390 942 : check_and_fetch_column_list(pub, publish_as_relid, NULL, &columns);
391 :
392 942 : if (relation->rd_rel->relreplident == REPLICA_IDENTITY_FULL)
393 : {
394 : /* With REPLICA IDENTITY FULL, no column list is allowed. */
395 212 : *invalid_column_list = (columns != NULL);
396 :
397 : /*
398 : * As we don't allow a column list with REPLICA IDENTITY FULL, the
399 : * publish_generated_columns option must be set to stored if the table
400 : * has any stored generated columns.
401 : */
402 212 : if (pubgencols_type != PUBLISH_GENCOLS_STORED &&
403 200 : relation->rd_att->constr &&
404 88 : relation->rd_att->constr->has_generated_stored)
405 6 : *invalid_gen_col = true;
406 :
407 : /*
408 : * Virtual generated columns are currently not supported for logical
409 : * replication at all.
410 : */
411 212 : if (relation->rd_att->constr &&
412 100 : relation->rd_att->constr->has_generated_virtual)
413 12 : *invalid_gen_col = true;
414 :
415 212 : if (*invalid_gen_col && *invalid_column_list)
416 0 : return true;
417 : }
418 :
419 : /* Remember columns that are part of the REPLICA IDENTITY */
420 942 : idattrs = RelationGetIndexAttrBitmap(relation,
421 : INDEX_ATTR_BITMAP_IDENTITY_KEY);
422 :
423 : /*
424 : * Attnums in the bitmap returned by RelationGetIndexAttrBitmap are offset
425 : * (to handle system columns the usual way), while column list does not
426 : * use offset, so we can't do bms_is_subset(). Instead, we have to loop
427 : * over the idattrs and check all of them are in the list.
428 : */
429 942 : x = -1;
430 1598 : while ((x = bms_next_member(idattrs, x)) >= 0)
431 : {
432 662 : AttrNumber attnum = (x + FirstLowInvalidHeapAttributeNumber);
433 662 : Form_pg_attribute att = TupleDescAttr(desc, attnum - 1);
434 :
435 662 : if (columns == NULL)
436 : {
437 : /*
438 : * The publish_generated_columns option must be set to stored if
439 : * the REPLICA IDENTITY contains any stored generated column.
440 : */
441 452 : if (att->attgenerated == ATTRIBUTE_GENERATED_STORED && pubgencols_type != PUBLISH_GENCOLS_STORED)
442 : {
443 6 : *invalid_gen_col = true;
444 6 : break;
445 : }
446 :
447 : /*
448 : * The equivalent setting for virtual generated columns does not
449 : * exist yet.
450 : */
451 446 : if (att->attgenerated == ATTRIBUTE_GENERATED_VIRTUAL)
452 : {
453 0 : *invalid_gen_col = true;
454 0 : break;
455 : }
456 :
457 : /* Skip validating the column list since it is not defined */
458 446 : continue;
459 : }
460 :
461 : /*
462 : * If pubviaroot is true, we are validating the column list of the
463 : * parent table, but the bitmap contains the replica identity
464 : * information of the child table. The parent/child attnums may not
465 : * match, so translate them to the parent - get the attname from the
466 : * child, and look it up in the parent.
467 : */
468 210 : if (pubviaroot)
469 : {
470 : /* attribute name in the child table */
471 80 : char *colname = get_attname(relid, attnum, false);
472 :
473 : /*
474 : * Determine the attnum for the attribute name in parent (we are
475 : * using the column list defined on the parent).
476 : */
477 80 : attnum = get_attnum(publish_as_relid, colname);
478 : }
479 :
480 : /* replica identity column, not covered by the column list */
481 210 : *invalid_column_list |= !bms_is_member(attnum, columns);
482 :
483 210 : if (*invalid_column_list && *invalid_gen_col)
484 0 : break;
485 : }
486 :
487 942 : bms_free(columns);
488 942 : bms_free(idattrs);
489 :
490 942 : return *invalid_column_list || *invalid_gen_col;
491 : }
492 :
493 : /*
494 : * Invalidate entries in the RelationSyncCache for relations included in the
495 : * specified publication, either via FOR TABLE or FOR TABLES IN SCHEMA.
496 : *
497 : * If 'puballtables' is true, invalidate all cache entries.
498 : */
499 : void
500 36 : InvalidatePubRelSyncCache(Oid pubid, bool puballtables)
501 : {
502 36 : if (puballtables)
503 : {
504 6 : CacheInvalidateRelSyncAll();
505 : }
506 : else
507 : {
508 30 : List *relids = NIL;
509 30 : List *schemarelids = NIL;
510 :
511 : /*
512 : * For partitioned tables, we must invalidate all partitions and
513 : * itself. WAL records for INSERT/UPDATE/DELETE specify leaf tables as
514 : * a target. However, WAL records for TRUNCATE specify both a root and
515 : * its leaves.
516 : */
517 30 : relids = GetPublicationRelations(pubid,
518 : PUBLICATION_PART_ALL);
519 30 : schemarelids = GetAllSchemaPublicationRelations(pubid,
520 : PUBLICATION_PART_ALL);
521 :
522 30 : relids = list_concat_unique_oid(relids, schemarelids);
523 :
524 : /* Invalidate the relsyncache */
525 66 : foreach_oid(relid, relids)
526 6 : CacheInvalidateRelSync(relid);
527 : }
528 :
529 36 : return;
530 : }
531 :
532 : /* check_functions_in_node callback */
533 : static bool
534 436 : contain_mutable_or_user_functions_checker(Oid func_id, void *context)
535 : {
536 436 : return (func_volatile(func_id) != PROVOLATILE_IMMUTABLE ||
537 : func_id >= FirstNormalObjectId);
538 : }
539 :
540 : /*
541 : * The row filter walker checks if the row filter expression is a "simple
542 : * expression".
543 : *
544 : * It allows only simple or compound expressions such as:
545 : * - (Var Op Const)
546 : * - (Var Op Var)
547 : * - (Var Op Const) AND/OR (Var Op Const)
548 : * - etc
549 : * (where Var is a column of the table this filter belongs to)
550 : *
551 : * The simple expression has the following restrictions:
552 : * - User-defined operators are not allowed;
553 : * - User-defined functions are not allowed;
554 : * - User-defined types are not allowed;
555 : * - User-defined collations are not allowed;
556 : * - Non-immutable built-in functions are not allowed;
557 : * - System columns are not allowed.
558 : *
559 : * NOTES
560 : *
561 : * We don't allow user-defined functions/operators/types/collations because
562 : * (a) if a user drops a user-defined object used in a row filter expression or
563 : * if there is any other error while using it, the logical decoding
564 : * infrastructure won't be able to recover from such an error even if the
565 : * object is recreated again because a historic snapshot is used to evaluate
566 : * the row filter;
567 : * (b) a user-defined function can be used to access tables that could have
568 : * unpleasant results because a historic snapshot is used. That's why only
569 : * immutable built-in functions are allowed in row filter expressions.
570 : *
571 : * We don't allow system columns because currently, we don't have that
572 : * information in the tuple passed to downstream. Also, as we don't replicate
573 : * those to subscribers, there doesn't seem to be a need for a filter on those
574 : * columns.
575 : *
576 : * We can allow other node types after more analysis and testing.
577 : */
578 : static bool
579 1440 : check_simple_rowfilter_expr_walker(Node *node, ParseState *pstate)
580 : {
581 1440 : char *errdetail_msg = NULL;
582 :
583 1440 : if (node == NULL)
584 6 : return false;
585 :
586 1434 : switch (nodeTag(node))
587 : {
588 388 : case T_Var:
589 : /* System columns are not allowed. */
590 388 : if (((Var *) node)->varattno < InvalidAttrNumber)
591 6 : errdetail_msg = _("System columns are not allowed.");
592 388 : break;
593 392 : case T_OpExpr:
594 : case T_DistinctExpr:
595 : case T_NullIfExpr:
596 : /* OK, except user-defined operators are not allowed. */
597 392 : if (((OpExpr *) node)->opno >= FirstNormalObjectId)
598 6 : errdetail_msg = _("User-defined operators are not allowed.");
599 392 : break;
600 6 : case T_ScalarArrayOpExpr:
601 : /* OK, except user-defined operators are not allowed. */
602 6 : if (((ScalarArrayOpExpr *) node)->opno >= FirstNormalObjectId)
603 0 : errdetail_msg = _("User-defined operators are not allowed.");
604 :
605 : /*
606 : * We don't need to check the hashfuncid and negfuncid of
607 : * ScalarArrayOpExpr as those functions are only built for a
608 : * subquery.
609 : */
610 6 : break;
611 6 : case T_RowCompareExpr:
612 : {
613 : ListCell *opid;
614 :
615 : /* OK, except user-defined operators are not allowed. */
616 18 : foreach(opid, ((RowCompareExpr *) node)->opnos)
617 : {
618 12 : if (lfirst_oid(opid) >= FirstNormalObjectId)
619 : {
620 0 : errdetail_msg = _("User-defined operators are not allowed.");
621 0 : break;
622 : }
623 : }
624 : }
625 6 : break;
626 636 : case T_Const:
627 : case T_FuncExpr:
628 : case T_BoolExpr:
629 : case T_RelabelType:
630 : case T_CollateExpr:
631 : case T_CaseExpr:
632 : case T_CaseTestExpr:
633 : case T_ArrayExpr:
634 : case T_RowExpr:
635 : case T_CoalesceExpr:
636 : case T_MinMaxExpr:
637 : case T_XmlExpr:
638 : case T_NullTest:
639 : case T_BooleanTest:
640 : case T_List:
641 : /* OK, supported */
642 636 : break;
643 6 : default:
644 6 : errdetail_msg = _("Only columns, constants, built-in operators, built-in data types, built-in collations, and immutable built-in functions are allowed.");
645 6 : break;
646 : }
647 :
648 : /*
649 : * For all the supported nodes, if we haven't already found a problem,
650 : * check the types, functions, and collations used in it. We check List
651 : * by walking through each element.
652 : */
653 1434 : if (!errdetail_msg && !IsA(node, List))
654 : {
655 1362 : if (exprType(node) >= FirstNormalObjectId)
656 6 : errdetail_msg = _("User-defined types are not allowed.");
657 1356 : else if (check_functions_in_node(node, contain_mutable_or_user_functions_checker,
658 : pstate))
659 12 : errdetail_msg = _("User-defined or built-in mutable functions are not allowed.");
660 2688 : else if (exprCollation(node) >= FirstNormalObjectId ||
661 1344 : exprInputCollation(node) >= FirstNormalObjectId)
662 6 : errdetail_msg = _("User-defined collations are not allowed.");
663 : }
664 :
665 : /*
666 : * If we found a problem in this node, throw error now. Otherwise keep
667 : * going.
668 : */
669 1434 : if (errdetail_msg)
670 42 : ereport(ERROR,
671 : (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
672 : errmsg("invalid publication WHERE expression"),
673 : errdetail_internal("%s", errdetail_msg),
674 : parser_errposition(pstate, exprLocation(node))));
675 :
676 1392 : return expression_tree_walker(node, check_simple_rowfilter_expr_walker,
677 : pstate);
678 : }
679 :
680 : /*
681 : * Check if the row filter expression is a "simple expression".
682 : *
683 : * See check_simple_rowfilter_expr_walker for details.
684 : */
685 : static bool
686 376 : check_simple_rowfilter_expr(Node *node, ParseState *pstate)
687 : {
688 376 : return check_simple_rowfilter_expr_walker(node, pstate);
689 : }
690 :
691 : /*
692 : * Transform the publication WHERE expression for all the relations in the list,
693 : * ensuring it is coerced to boolean and necessary collation information is
694 : * added if required, and add a new nsitem/RTE for the associated relation to
695 : * the ParseState's namespace list.
696 : *
697 : * Also check the publication row filter expression and throw an error if
698 : * anything not permitted or unexpected is encountered.
699 : */
700 : static void
701 1184 : TransformPubWhereClauses(List *tables, const char *queryString,
702 : bool pubviaroot)
703 : {
704 : ListCell *lc;
705 :
706 2382 : foreach(lc, tables)
707 : {
708 : ParseNamespaceItem *nsitem;
709 1258 : Node *whereclause = NULL;
710 : ParseState *pstate;
711 1258 : PublicationRelInfo *pri = (PublicationRelInfo *) lfirst(lc);
712 :
713 1258 : if (pri->whereClause == NULL)
714 864 : continue;
715 :
716 : /*
717 : * If the publication doesn't publish changes via the root partitioned
718 : * table, the partition's row filter will be used. So disallow using
719 : * WHERE clause on partitioned table in this case.
720 : */
721 394 : if (!pubviaroot &&
722 364 : pri->relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
723 6 : ereport(ERROR,
724 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
725 : errmsg("cannot use publication WHERE clause for relation \"%s\"",
726 : RelationGetRelationName(pri->relation)),
727 : errdetail("WHERE clause cannot be used for a partitioned table when %s is false.",
728 : "publish_via_partition_root")));
729 :
730 : /*
731 : * A fresh pstate is required so that we only have "this" table in its
732 : * rangetable
733 : */
734 388 : pstate = make_parsestate(NULL);
735 388 : pstate->p_sourcetext = queryString;
736 388 : nsitem = addRangeTableEntryForRelation(pstate, pri->relation,
737 : AccessShareLock, NULL,
738 : false, false);
739 388 : addNSItemToQuery(pstate, nsitem, false, true, true);
740 :
741 388 : whereclause = transformWhereClause(pstate,
742 388 : copyObject(pri->whereClause),
743 : EXPR_KIND_WHERE,
744 : "PUBLICATION WHERE");
745 :
746 : /* Fix up collation information */
747 376 : assign_expr_collations(pstate, whereclause);
748 :
749 376 : whereclause = expand_generated_columns_in_expr(whereclause, pri->relation, 1);
750 :
751 : /*
752 : * We allow only simple expressions in row filters. See
753 : * check_simple_rowfilter_expr_walker.
754 : */
755 376 : check_simple_rowfilter_expr(whereclause, pstate);
756 :
757 334 : free_parsestate(pstate);
758 :
759 334 : pri->whereClause = whereclause;
760 : }
761 1124 : }
762 :
763 :
764 : /*
765 : * Given a list of tables that are going to be added to a publication,
766 : * verify that they fulfill the necessary preconditions, namely: no tables
767 : * have a column list if any schema is published; and partitioned tables do
768 : * not have column lists if publish_via_partition_root is not set.
769 : *
770 : * 'publish_schema' indicates that the publication contains any TABLES IN
771 : * SCHEMA elements (newly added in this command, or preexisting).
772 : * 'pubviaroot' is the value of publish_via_partition_root.
773 : */
774 : static void
775 1124 : CheckPubRelationColumnList(char *pubname, List *tables,
776 : bool publish_schema, bool pubviaroot)
777 : {
778 : ListCell *lc;
779 :
780 2292 : foreach(lc, tables)
781 : {
782 1198 : PublicationRelInfo *pri = (PublicationRelInfo *) lfirst(lc);
783 :
784 1198 : if (pri->columns == NIL)
785 794 : continue;
786 :
787 : /*
788 : * Disallow specifying column list if any schema is in the
789 : * publication.
790 : *
791 : * XXX We could instead just forbid the case when the publication
792 : * tries to publish the table with a column list and a schema for that
793 : * table. However, if we do that then we need a restriction during
794 : * ALTER TABLE ... SET SCHEMA to prevent such a case which doesn't
795 : * seem to be a good idea.
796 : */
797 404 : if (publish_schema)
798 24 : ereport(ERROR,
799 : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
800 : errmsg("cannot use column list for relation \"%s.%s\" in publication \"%s\"",
801 : get_namespace_name(RelationGetNamespace(pri->relation)),
802 : RelationGetRelationName(pri->relation), pubname),
803 : errdetail("Column lists cannot be specified in publications containing FOR TABLES IN SCHEMA elements."));
804 :
805 : /*
806 : * If the publication doesn't publish changes via the root partitioned
807 : * table, the partition's column list will be used. So disallow using
808 : * a column list on the partitioned table in this case.
809 : */
810 380 : if (!pubviaroot &&
811 304 : pri->relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
812 6 : ereport(ERROR,
813 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
814 : errmsg("cannot use column list for relation \"%s.%s\" in publication \"%s\"",
815 : get_namespace_name(RelationGetNamespace(pri->relation)),
816 : RelationGetRelationName(pri->relation), pubname),
817 : errdetail("Column lists cannot be specified for partitioned tables when %s is false.",
818 : "publish_via_partition_root")));
819 : }
820 1094 : }
821 :
822 : /*
823 : * Create new publication.
824 : */
825 : ObjectAddress
826 904 : CreatePublication(ParseState *pstate, CreatePublicationStmt *stmt)
827 : {
828 : Relation rel;
829 : ObjectAddress myself;
830 : Oid puboid;
831 : bool nulls[Natts_pg_publication];
832 : Datum values[Natts_pg_publication];
833 : HeapTuple tup;
834 : bool publish_given;
835 : PublicationActions pubactions;
836 : bool publish_via_partition_root_given;
837 : bool publish_via_partition_root;
838 : bool publish_generated_columns_given;
839 : char publish_generated_columns;
840 : AclResult aclresult;
841 904 : List *relations = NIL;
842 904 : List *schemaidlist = NIL;
843 :
844 : /* must have CREATE privilege on database */
845 904 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId, GetUserId(), ACL_CREATE);
846 904 : if (aclresult != ACLCHECK_OK)
847 6 : aclcheck_error(aclresult, OBJECT_DATABASE,
848 6 : get_database_name(MyDatabaseId));
849 :
850 : /* FOR ALL TABLES and FOR ALL SEQUENCES requires superuser */
851 898 : if (!superuser())
852 : {
853 24 : if (stmt->for_all_tables || stmt->for_all_sequences)
854 0 : ereport(ERROR,
855 : errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
856 : errmsg("must be superuser to create a FOR ALL TABLES or ALL SEQUENCES publication"));
857 : }
858 :
859 898 : rel = table_open(PublicationRelationId, RowExclusiveLock);
860 :
861 : /* Check if name is used */
862 898 : puboid = GetSysCacheOid1(PUBLICATIONNAME, Anum_pg_publication_oid,
863 : CStringGetDatum(stmt->pubname));
864 898 : if (OidIsValid(puboid))
865 6 : ereport(ERROR,
866 : (errcode(ERRCODE_DUPLICATE_OBJECT),
867 : errmsg("publication \"%s\" already exists",
868 : stmt->pubname)));
869 :
870 : /* Form a tuple. */
871 892 : memset(values, 0, sizeof(values));
872 892 : memset(nulls, false, sizeof(nulls));
873 :
874 892 : values[Anum_pg_publication_pubname - 1] =
875 892 : DirectFunctionCall1(namein, CStringGetDatum(stmt->pubname));
876 892 : values[Anum_pg_publication_pubowner - 1] = ObjectIdGetDatum(GetUserId());
877 :
878 892 : parse_publication_options(pstate,
879 : stmt->options,
880 : &publish_given, &pubactions,
881 : &publish_via_partition_root_given,
882 : &publish_via_partition_root,
883 : &publish_generated_columns_given,
884 : &publish_generated_columns);
885 :
886 856 : if (stmt->for_all_sequences &&
887 36 : (publish_given || publish_via_partition_root_given ||
888 : publish_generated_columns_given))
889 14 : ereport(NOTICE,
890 : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
891 : errmsg("publication parameters are not applicable to sequence synchronization and will be ignored for sequences"));
892 :
893 856 : puboid = GetNewOidWithIndex(rel, PublicationObjectIndexId,
894 : Anum_pg_publication_oid);
895 856 : values[Anum_pg_publication_oid - 1] = ObjectIdGetDatum(puboid);
896 856 : values[Anum_pg_publication_puballtables - 1] =
897 856 : BoolGetDatum(stmt->for_all_tables);
898 856 : values[Anum_pg_publication_puballsequences - 1] =
899 856 : BoolGetDatum(stmt->for_all_sequences);
900 856 : values[Anum_pg_publication_pubinsert - 1] =
901 856 : BoolGetDatum(pubactions.pubinsert);
902 856 : values[Anum_pg_publication_pubupdate - 1] =
903 856 : BoolGetDatum(pubactions.pubupdate);
904 856 : values[Anum_pg_publication_pubdelete - 1] =
905 856 : BoolGetDatum(pubactions.pubdelete);
906 856 : values[Anum_pg_publication_pubtruncate - 1] =
907 856 : BoolGetDatum(pubactions.pubtruncate);
908 856 : values[Anum_pg_publication_pubviaroot - 1] =
909 856 : BoolGetDatum(publish_via_partition_root);
910 856 : values[Anum_pg_publication_pubgencols - 1] =
911 856 : CharGetDatum(publish_generated_columns);
912 :
913 856 : tup = heap_form_tuple(RelationGetDescr(rel), values, nulls);
914 :
915 : /* Insert tuple into catalog. */
916 856 : CatalogTupleInsert(rel, tup);
917 856 : heap_freetuple(tup);
918 :
919 856 : recordDependencyOnOwner(PublicationRelationId, puboid, GetUserId());
920 :
921 856 : ObjectAddressSet(myself, PublicationRelationId, puboid);
922 :
923 : /* Make the changes visible. */
924 856 : CommandCounterIncrement();
925 :
926 : /* Associate objects with the publication. */
927 856 : if (stmt->for_all_tables)
928 : {
929 : /*
930 : * Invalidate relcache so that publication info is rebuilt. Sequences
931 : * publication doesn't require invalidation, as replica identity
932 : * checks don't apply to them.
933 : */
934 114 : CacheInvalidateRelcacheAll();
935 : }
936 742 : else if (!stmt->for_all_sequences)
937 : {
938 720 : ObjectsInPublicationToOids(stmt->pubobjects, pstate, &relations,
939 : &schemaidlist);
940 :
941 : /* FOR TABLES IN SCHEMA requires superuser */
942 702 : if (schemaidlist != NIL && !superuser())
943 6 : ereport(ERROR,
944 : errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
945 : errmsg("must be superuser to create FOR TABLES IN SCHEMA publication"));
946 :
947 696 : if (relations != NIL)
948 : {
949 : List *rels;
950 :
951 472 : rels = OpenTableList(relations);
952 442 : TransformPubWhereClauses(rels, pstate->p_sourcetext,
953 : publish_via_partition_root);
954 :
955 418 : CheckPubRelationColumnList(stmt->pubname, rels,
956 : schemaidlist != NIL,
957 : publish_via_partition_root);
958 :
959 412 : PublicationAddTables(puboid, rels, true, NULL);
960 386 : CloseTableList(rels);
961 : }
962 :
963 610 : if (schemaidlist != NIL)
964 : {
965 : /*
966 : * Schema lock is held until the publication is created to prevent
967 : * concurrent schema deletion.
968 : */
969 152 : LockSchemaList(schemaidlist);
970 152 : PublicationAddSchemas(puboid, schemaidlist, true, NULL);
971 : }
972 : }
973 :
974 740 : table_close(rel, RowExclusiveLock);
975 :
976 740 : InvokeObjectPostCreateHook(PublicationRelationId, puboid, 0);
977 :
978 740 : if (wal_level != WAL_LEVEL_LOGICAL)
979 448 : ereport(WARNING,
980 : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
981 : errmsg("\"wal_level\" is insufficient to publish logical changes"),
982 : errhint("Set \"wal_level\" to \"logical\" before creating subscriptions.")));
983 :
984 740 : return myself;
985 : }
986 :
987 : /*
988 : * Change options of a publication.
989 : */
990 : static void
991 116 : AlterPublicationOptions(ParseState *pstate, AlterPublicationStmt *stmt,
992 : Relation rel, HeapTuple tup)
993 : {
994 : bool nulls[Natts_pg_publication];
995 : bool replaces[Natts_pg_publication];
996 : Datum values[Natts_pg_publication];
997 : bool publish_given;
998 : PublicationActions pubactions;
999 : bool publish_via_partition_root_given;
1000 : bool publish_via_partition_root;
1001 : bool publish_generated_columns_given;
1002 : char publish_generated_columns;
1003 : ObjectAddress obj;
1004 : Form_pg_publication pubform;
1005 116 : List *root_relids = NIL;
1006 : ListCell *lc;
1007 :
1008 116 : pubform = (Form_pg_publication) GETSTRUCT(tup);
1009 :
1010 116 : parse_publication_options(pstate,
1011 : stmt->options,
1012 : &publish_given, &pubactions,
1013 : &publish_via_partition_root_given,
1014 : &publish_via_partition_root,
1015 : &publish_generated_columns_given,
1016 : &publish_generated_columns);
1017 :
1018 116 : if (pubform->puballsequences &&
1019 0 : (publish_given || publish_via_partition_root_given ||
1020 : publish_generated_columns_given))
1021 0 : ereport(NOTICE,
1022 : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1023 : errmsg("publication parameters are not applicable to sequence synchronization and will be ignored for sequences"));
1024 :
1025 : /*
1026 : * If the publication doesn't publish changes via the root partitioned
1027 : * table, the partition's row filter and column list will be used. So
1028 : * disallow using WHERE clause and column lists on partitioned table in
1029 : * this case.
1030 : */
1031 116 : if (!pubform->puballtables && publish_via_partition_root_given &&
1032 80 : !publish_via_partition_root)
1033 : {
1034 : /*
1035 : * Lock the publication so nobody else can do anything with it. This
1036 : * prevents concurrent alter to add partitioned table(s) with WHERE
1037 : * clause(s) and/or column lists which we don't allow when not
1038 : * publishing via root.
1039 : */
1040 48 : LockDatabaseObject(PublicationRelationId, pubform->oid, 0,
1041 : AccessShareLock);
1042 :
1043 48 : root_relids = GetPublicationRelations(pubform->oid,
1044 : PUBLICATION_PART_ROOT);
1045 :
1046 84 : foreach(lc, root_relids)
1047 : {
1048 48 : Oid relid = lfirst_oid(lc);
1049 : HeapTuple rftuple;
1050 : char relkind;
1051 : char *relname;
1052 : bool has_rowfilter;
1053 : bool has_collist;
1054 :
1055 : /*
1056 : * Beware: we don't have lock on the relations, so cope silently
1057 : * with the cache lookups returning NULL.
1058 : */
1059 :
1060 48 : rftuple = SearchSysCache2(PUBLICATIONRELMAP,
1061 : ObjectIdGetDatum(relid),
1062 : ObjectIdGetDatum(pubform->oid));
1063 48 : if (!HeapTupleIsValid(rftuple))
1064 0 : continue;
1065 48 : has_rowfilter = !heap_attisnull(rftuple, Anum_pg_publication_rel_prqual, NULL);
1066 48 : has_collist = !heap_attisnull(rftuple, Anum_pg_publication_rel_prattrs, NULL);
1067 48 : if (!has_rowfilter && !has_collist)
1068 : {
1069 12 : ReleaseSysCache(rftuple);
1070 12 : continue;
1071 : }
1072 :
1073 36 : relkind = get_rel_relkind(relid);
1074 36 : if (relkind != RELKIND_PARTITIONED_TABLE)
1075 : {
1076 24 : ReleaseSysCache(rftuple);
1077 24 : continue;
1078 : }
1079 12 : relname = get_rel_name(relid);
1080 12 : if (relname == NULL) /* table concurrently dropped */
1081 : {
1082 0 : ReleaseSysCache(rftuple);
1083 0 : continue;
1084 : }
1085 :
1086 12 : if (has_rowfilter)
1087 6 : ereport(ERROR,
1088 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1089 : errmsg("cannot set parameter \"%s\" to false for publication \"%s\"",
1090 : "publish_via_partition_root",
1091 : stmt->pubname),
1092 : errdetail("The publication contains a WHERE clause for partitioned table \"%s\", which is not allowed when \"%s\" is false.",
1093 : relname, "publish_via_partition_root")));
1094 : Assert(has_collist);
1095 6 : ereport(ERROR,
1096 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1097 : errmsg("cannot set parameter \"%s\" to false for publication \"%s\"",
1098 : "publish_via_partition_root",
1099 : stmt->pubname),
1100 : errdetail("The publication contains a column list for partitioned table \"%s\", which is not allowed when \"%s\" is false.",
1101 : relname, "publish_via_partition_root")));
1102 : }
1103 : }
1104 :
1105 : /* Everything ok, form a new tuple. */
1106 104 : memset(values, 0, sizeof(values));
1107 104 : memset(nulls, false, sizeof(nulls));
1108 104 : memset(replaces, false, sizeof(replaces));
1109 :
1110 104 : if (publish_given)
1111 : {
1112 28 : values[Anum_pg_publication_pubinsert - 1] = BoolGetDatum(pubactions.pubinsert);
1113 28 : replaces[Anum_pg_publication_pubinsert - 1] = true;
1114 :
1115 28 : values[Anum_pg_publication_pubupdate - 1] = BoolGetDatum(pubactions.pubupdate);
1116 28 : replaces[Anum_pg_publication_pubupdate - 1] = true;
1117 :
1118 28 : values[Anum_pg_publication_pubdelete - 1] = BoolGetDatum(pubactions.pubdelete);
1119 28 : replaces[Anum_pg_publication_pubdelete - 1] = true;
1120 :
1121 28 : values[Anum_pg_publication_pubtruncate - 1] = BoolGetDatum(pubactions.pubtruncate);
1122 28 : replaces[Anum_pg_publication_pubtruncate - 1] = true;
1123 : }
1124 :
1125 104 : if (publish_via_partition_root_given)
1126 : {
1127 70 : values[Anum_pg_publication_pubviaroot - 1] = BoolGetDatum(publish_via_partition_root);
1128 70 : replaces[Anum_pg_publication_pubviaroot - 1] = true;
1129 : }
1130 :
1131 104 : if (publish_generated_columns_given)
1132 : {
1133 6 : values[Anum_pg_publication_pubgencols - 1] = CharGetDatum(publish_generated_columns);
1134 6 : replaces[Anum_pg_publication_pubgencols - 1] = true;
1135 : }
1136 :
1137 104 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,
1138 : replaces);
1139 :
1140 : /* Update the catalog. */
1141 104 : CatalogTupleUpdate(rel, &tup->t_self, tup);
1142 :
1143 104 : CommandCounterIncrement();
1144 :
1145 104 : pubform = (Form_pg_publication) GETSTRUCT(tup);
1146 :
1147 : /* Invalidate the relcache. */
1148 104 : if (pubform->puballtables)
1149 : {
1150 8 : CacheInvalidateRelcacheAll();
1151 : }
1152 : else
1153 : {
1154 96 : List *relids = NIL;
1155 96 : List *schemarelids = NIL;
1156 :
1157 : /*
1158 : * For any partitioned tables contained in the publication, we must
1159 : * invalidate all partitions contained in the respective partition
1160 : * trees, not just those explicitly mentioned in the publication.
1161 : */
1162 96 : if (root_relids == NIL)
1163 60 : relids = GetPublicationRelations(pubform->oid,
1164 : PUBLICATION_PART_ALL);
1165 : else
1166 : {
1167 : /*
1168 : * We already got tables explicitly mentioned in the publication.
1169 : * Now get all partitions for the partitioned table in the list.
1170 : */
1171 72 : foreach(lc, root_relids)
1172 36 : relids = GetPubPartitionOptionRelations(relids,
1173 : PUBLICATION_PART_ALL,
1174 : lfirst_oid(lc));
1175 : }
1176 :
1177 96 : schemarelids = GetAllSchemaPublicationRelations(pubform->oid,
1178 : PUBLICATION_PART_ALL);
1179 96 : relids = list_concat_unique_oid(relids, schemarelids);
1180 :
1181 96 : InvalidatePublicationRels(relids);
1182 : }
1183 :
1184 104 : ObjectAddressSet(obj, PublicationRelationId, pubform->oid);
1185 104 : EventTriggerCollectSimpleCommand(obj, InvalidObjectAddress,
1186 : (Node *) stmt);
1187 :
1188 104 : InvokeObjectPostAlterHook(PublicationRelationId, pubform->oid, 0);
1189 104 : }
1190 :
1191 : /*
1192 : * Invalidate the relations.
1193 : */
1194 : void
1195 2444 : InvalidatePublicationRels(List *relids)
1196 : {
1197 : /*
1198 : * We don't want to send too many individual messages, at some point it's
1199 : * cheaper to just reset whole relcache.
1200 : */
1201 2444 : if (list_length(relids) < MAX_RELCACHE_INVAL_MSGS)
1202 : {
1203 : ListCell *lc;
1204 :
1205 20642 : foreach(lc, relids)
1206 18198 : CacheInvalidateRelcacheByRelid(lfirst_oid(lc));
1207 : }
1208 : else
1209 0 : CacheInvalidateRelcacheAll();
1210 2444 : }
1211 :
1212 : /*
1213 : * Add or remove table to/from publication.
1214 : */
1215 : static void
1216 918 : AlterPublicationTables(AlterPublicationStmt *stmt, HeapTuple tup,
1217 : List *tables, const char *queryString,
1218 : bool publish_schema)
1219 : {
1220 918 : List *rels = NIL;
1221 918 : Form_pg_publication pubform = (Form_pg_publication) GETSTRUCT(tup);
1222 918 : Oid pubid = pubform->oid;
1223 :
1224 : /*
1225 : * Nothing to do if no objects, except in SET: for that it is quite
1226 : * possible that user has not specified any tables in which case we need
1227 : * to remove all the existing tables.
1228 : */
1229 918 : if (!tables && stmt->action != AP_SetObjects)
1230 76 : return;
1231 :
1232 842 : rels = OpenTableList(tables);
1233 :
1234 842 : if (stmt->action == AP_AddObjects)
1235 : {
1236 296 : TransformPubWhereClauses(rels, queryString, pubform->pubviaroot);
1237 :
1238 278 : publish_schema |= is_schema_publication(pubid);
1239 :
1240 278 : CheckPubRelationColumnList(stmt->pubname, rels, publish_schema,
1241 278 : pubform->pubviaroot);
1242 :
1243 266 : PublicationAddTables(pubid, rels, false, stmt);
1244 : }
1245 546 : else if (stmt->action == AP_DropObjects)
1246 100 : PublicationDropTables(pubid, rels, false);
1247 : else /* AP_SetObjects */
1248 : {
1249 446 : List *oldrelids = GetPublicationRelations(pubid,
1250 : PUBLICATION_PART_ROOT);
1251 446 : List *delrels = NIL;
1252 : ListCell *oldlc;
1253 :
1254 446 : TransformPubWhereClauses(rels, queryString, pubform->pubviaroot);
1255 :
1256 428 : CheckPubRelationColumnList(stmt->pubname, rels, publish_schema,
1257 428 : pubform->pubviaroot);
1258 :
1259 : /*
1260 : * To recreate the relation list for the publication, look for
1261 : * existing relations that do not need to be dropped.
1262 : */
1263 806 : foreach(oldlc, oldrelids)
1264 : {
1265 402 : Oid oldrelid = lfirst_oid(oldlc);
1266 : ListCell *newlc;
1267 : PublicationRelInfo *oldrel;
1268 402 : bool found = false;
1269 : HeapTuple rftuple;
1270 402 : Node *oldrelwhereclause = NULL;
1271 402 : Bitmapset *oldcolumns = NULL;
1272 :
1273 : /* look up the cache for the old relmap */
1274 402 : rftuple = SearchSysCache2(PUBLICATIONRELMAP,
1275 : ObjectIdGetDatum(oldrelid),
1276 : ObjectIdGetDatum(pubid));
1277 :
1278 : /*
1279 : * See if the existing relation currently has a WHERE clause or a
1280 : * column list. We need to compare those too.
1281 : */
1282 402 : if (HeapTupleIsValid(rftuple))
1283 : {
1284 402 : bool isnull = true;
1285 : Datum whereClauseDatum;
1286 : Datum columnListDatum;
1287 :
1288 : /* Load the WHERE clause for this table. */
1289 402 : whereClauseDatum = SysCacheGetAttr(PUBLICATIONRELMAP, rftuple,
1290 : Anum_pg_publication_rel_prqual,
1291 : &isnull);
1292 402 : if (!isnull)
1293 210 : oldrelwhereclause = stringToNode(TextDatumGetCString(whereClauseDatum));
1294 :
1295 : /* Transform the int2vector column list to a bitmap. */
1296 402 : columnListDatum = SysCacheGetAttr(PUBLICATIONRELMAP, rftuple,
1297 : Anum_pg_publication_rel_prattrs,
1298 : &isnull);
1299 :
1300 402 : if (!isnull)
1301 136 : oldcolumns = pub_collist_to_bitmapset(NULL, columnListDatum, NULL);
1302 :
1303 402 : ReleaseSysCache(rftuple);
1304 : }
1305 :
1306 778 : foreach(newlc, rels)
1307 : {
1308 : PublicationRelInfo *newpubrel;
1309 : Oid newrelid;
1310 404 : Bitmapset *newcolumns = NULL;
1311 :
1312 404 : newpubrel = (PublicationRelInfo *) lfirst(newlc);
1313 404 : newrelid = RelationGetRelid(newpubrel->relation);
1314 :
1315 : /*
1316 : * Validate the column list. If the column list or WHERE
1317 : * clause changes, then the validation done here will be
1318 : * duplicated inside PublicationAddTables(). The validation
1319 : * is cheap enough that that seems harmless.
1320 : */
1321 404 : newcolumns = pub_collist_validate(newpubrel->relation,
1322 : newpubrel->columns);
1323 :
1324 : /*
1325 : * Check if any of the new set of relations matches with the
1326 : * existing relations in the publication. Additionally, if the
1327 : * relation has an associated WHERE clause, check the WHERE
1328 : * expressions also match. Same for the column list. Drop the
1329 : * rest.
1330 : */
1331 392 : if (newrelid == oldrelid)
1332 : {
1333 284 : if (equal(oldrelwhereclause, newpubrel->whereClause) &&
1334 80 : bms_equal(oldcolumns, newcolumns))
1335 : {
1336 16 : found = true;
1337 16 : break;
1338 : }
1339 : }
1340 : }
1341 :
1342 : /*
1343 : * Add the non-matched relations to a list so that they can be
1344 : * dropped.
1345 : */
1346 390 : if (!found)
1347 : {
1348 374 : oldrel = palloc(sizeof(PublicationRelInfo));
1349 374 : oldrel->whereClause = NULL;
1350 374 : oldrel->columns = NIL;
1351 374 : oldrel->relation = table_open(oldrelid,
1352 : ShareUpdateExclusiveLock);
1353 374 : delrels = lappend(delrels, oldrel);
1354 : }
1355 : }
1356 :
1357 : /* And drop them. */
1358 404 : PublicationDropTables(pubid, delrels, true);
1359 :
1360 : /*
1361 : * Don't bother calculating the difference for adding, we'll catch and
1362 : * skip existing ones when doing catalog update.
1363 : */
1364 404 : PublicationAddTables(pubid, rels, true, stmt);
1365 :
1366 404 : CloseTableList(delrels);
1367 : }
1368 :
1369 710 : CloseTableList(rels);
1370 : }
1371 :
1372 : /*
1373 : * Alter the publication schemas.
1374 : *
1375 : * Add or remove schemas to/from publication.
1376 : */
1377 : static void
1378 786 : AlterPublicationSchemas(AlterPublicationStmt *stmt,
1379 : HeapTuple tup, List *schemaidlist)
1380 : {
1381 786 : Form_pg_publication pubform = (Form_pg_publication) GETSTRUCT(tup);
1382 :
1383 : /*
1384 : * Nothing to do if no objects, except in SET: for that it is quite
1385 : * possible that user has not specified any schemas in which case we need
1386 : * to remove all the existing schemas.
1387 : */
1388 786 : if (!schemaidlist && stmt->action != AP_SetObjects)
1389 306 : return;
1390 :
1391 : /*
1392 : * Schema lock is held until the publication is altered to prevent
1393 : * concurrent schema deletion.
1394 : */
1395 480 : LockSchemaList(schemaidlist);
1396 480 : if (stmt->action == AP_AddObjects)
1397 : {
1398 : ListCell *lc;
1399 : List *reloids;
1400 :
1401 38 : reloids = GetPublicationRelations(pubform->oid, PUBLICATION_PART_ROOT);
1402 :
1403 54 : foreach(lc, reloids)
1404 : {
1405 : HeapTuple coltuple;
1406 :
1407 22 : coltuple = SearchSysCache2(PUBLICATIONRELMAP,
1408 : ObjectIdGetDatum(lfirst_oid(lc)),
1409 : ObjectIdGetDatum(pubform->oid));
1410 :
1411 22 : if (!HeapTupleIsValid(coltuple))
1412 0 : continue;
1413 :
1414 : /*
1415 : * Disallow adding schema if column list is already part of the
1416 : * publication. See CheckPubRelationColumnList.
1417 : */
1418 22 : if (!heap_attisnull(coltuple, Anum_pg_publication_rel_prattrs, NULL))
1419 6 : ereport(ERROR,
1420 : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1421 : errmsg("cannot add schema to publication \"%s\"",
1422 : stmt->pubname),
1423 : errdetail("Schemas cannot be added if any tables that specify a column list are already part of the publication."));
1424 :
1425 16 : ReleaseSysCache(coltuple);
1426 : }
1427 :
1428 32 : PublicationAddSchemas(pubform->oid, schemaidlist, false, stmt);
1429 : }
1430 442 : else if (stmt->action == AP_DropObjects)
1431 38 : PublicationDropSchemas(pubform->oid, schemaidlist, false);
1432 : else /* AP_SetObjects */
1433 : {
1434 404 : List *oldschemaids = GetPublicationSchemas(pubform->oid);
1435 404 : List *delschemas = NIL;
1436 :
1437 : /* Identify which schemas should be dropped */
1438 404 : delschemas = list_difference_oid(oldschemaids, schemaidlist);
1439 :
1440 : /*
1441 : * Schema lock is held until the publication is altered to prevent
1442 : * concurrent schema deletion.
1443 : */
1444 404 : LockSchemaList(delschemas);
1445 :
1446 : /* And drop them */
1447 404 : PublicationDropSchemas(pubform->oid, delschemas, true);
1448 :
1449 : /*
1450 : * Don't bother calculating the difference for adding, we'll catch and
1451 : * skip existing ones when doing catalog update.
1452 : */
1453 404 : PublicationAddSchemas(pubform->oid, schemaidlist, true, stmt);
1454 : }
1455 : }
1456 :
1457 : /*
1458 : * Check if relations and schemas can be in a given publication and throw
1459 : * appropriate error if not.
1460 : */
1461 : static void
1462 960 : CheckAlterPublication(AlterPublicationStmt *stmt, HeapTuple tup,
1463 : List *tables, List *schemaidlist)
1464 : {
1465 960 : Form_pg_publication pubform = (Form_pg_publication) GETSTRUCT(tup);
1466 :
1467 960 : if ((stmt->action == AP_AddObjects || stmt->action == AP_SetObjects) &&
1468 104 : schemaidlist && !superuser())
1469 6 : ereport(ERROR,
1470 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1471 : errmsg("must be superuser to add or set schemas")));
1472 :
1473 : /*
1474 : * Check that user is allowed to manipulate the publication tables in
1475 : * schema
1476 : */
1477 954 : if (schemaidlist && (pubform->puballtables || pubform->puballsequences))
1478 : {
1479 18 : if (pubform->puballtables && pubform->puballsequences)
1480 0 : ereport(ERROR,
1481 : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1482 : errmsg("publication \"%s\" is defined as FOR ALL TABLES, ALL SEQUENCES",
1483 : NameStr(pubform->pubname)),
1484 : errdetail("Schemas cannot be added to or dropped from FOR ALL TABLES, ALL SEQUENCES publications."));
1485 18 : else if (pubform->puballtables)
1486 18 : ereport(ERROR,
1487 : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1488 : errmsg("publication \"%s\" is defined as FOR ALL TABLES",
1489 : NameStr(pubform->pubname)),
1490 : errdetail("Schemas cannot be added to or dropped from FOR ALL TABLES publications."));
1491 : else
1492 0 : ereport(ERROR,
1493 : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1494 : errmsg("publication \"%s\" is defined as FOR ALL SEQUENCES",
1495 : NameStr(pubform->pubname)),
1496 : errdetail("Schemas cannot be added to or dropped from FOR ALL SEQUENCES publications."));
1497 : }
1498 :
1499 : /* Check that user is allowed to manipulate the publication tables. */
1500 936 : if (tables && (pubform->puballtables || pubform->puballsequences))
1501 : {
1502 18 : if (pubform->puballtables && pubform->puballsequences)
1503 0 : ereport(ERROR,
1504 : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1505 : errmsg("publication \"%s\" is defined as FOR ALL TABLES, ALL SEQUENCES",
1506 : NameStr(pubform->pubname)),
1507 : errdetail("Tables or sequences cannot be added to or dropped from FOR ALL TABLES, ALL SEQUENCES publications."));
1508 18 : else if (pubform->puballtables)
1509 18 : ereport(ERROR,
1510 : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1511 : errmsg("publication \"%s\" is defined as FOR ALL TABLES",
1512 : NameStr(pubform->pubname)),
1513 : errdetail("Tables or sequences cannot be added to or dropped from FOR ALL TABLES publications."));
1514 : else
1515 0 : ereport(ERROR,
1516 : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1517 : errmsg("publication \"%s\" is defined as FOR ALL SEQUENCES",
1518 : NameStr(pubform->pubname)),
1519 : errdetail("Tables or sequences cannot be added to or dropped from FOR ALL SEQUENCES publications."));
1520 : }
1521 918 : }
1522 :
1523 : /*
1524 : * Alter the existing publication.
1525 : *
1526 : * This is dispatcher function for AlterPublicationOptions,
1527 : * AlterPublicationSchemas and AlterPublicationTables.
1528 : */
1529 : void
1530 1094 : AlterPublication(ParseState *pstate, AlterPublicationStmt *stmt)
1531 : {
1532 : Relation rel;
1533 : HeapTuple tup;
1534 : Form_pg_publication pubform;
1535 :
1536 1094 : rel = table_open(PublicationRelationId, RowExclusiveLock);
1537 :
1538 1094 : tup = SearchSysCacheCopy1(PUBLICATIONNAME,
1539 : CStringGetDatum(stmt->pubname));
1540 :
1541 1094 : if (!HeapTupleIsValid(tup))
1542 0 : ereport(ERROR,
1543 : (errcode(ERRCODE_UNDEFINED_OBJECT),
1544 : errmsg("publication \"%s\" does not exist",
1545 : stmt->pubname)));
1546 :
1547 1094 : pubform = (Form_pg_publication) GETSTRUCT(tup);
1548 :
1549 : /* must be owner */
1550 1094 : if (!object_ownercheck(PublicationRelationId, pubform->oid, GetUserId()))
1551 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_PUBLICATION,
1552 0 : stmt->pubname);
1553 :
1554 1094 : if (stmt->options)
1555 116 : AlterPublicationOptions(pstate, stmt, rel, tup);
1556 : else
1557 : {
1558 978 : List *relations = NIL;
1559 978 : List *schemaidlist = NIL;
1560 978 : Oid pubid = pubform->oid;
1561 :
1562 978 : ObjectsInPublicationToOids(stmt->pubobjects, pstate, &relations,
1563 : &schemaidlist);
1564 :
1565 960 : CheckAlterPublication(stmt, tup, relations, schemaidlist);
1566 :
1567 918 : heap_freetuple(tup);
1568 :
1569 : /* Lock the publication so nobody else can do anything with it. */
1570 918 : LockDatabaseObject(PublicationRelationId, pubid, 0,
1571 : AccessExclusiveLock);
1572 :
1573 : /*
1574 : * It is possible that by the time we acquire the lock on publication,
1575 : * concurrent DDL has removed it. We can test this by checking the
1576 : * existence of publication. We get the tuple again to avoid the risk
1577 : * of any publication option getting changed.
1578 : */
1579 918 : tup = SearchSysCacheCopy1(PUBLICATIONOID, ObjectIdGetDatum(pubid));
1580 918 : if (!HeapTupleIsValid(tup))
1581 0 : ereport(ERROR,
1582 : errcode(ERRCODE_UNDEFINED_OBJECT),
1583 : errmsg("publication \"%s\" does not exist",
1584 : stmt->pubname));
1585 :
1586 918 : AlterPublicationTables(stmt, tup, relations, pstate->p_sourcetext,
1587 : schemaidlist != NIL);
1588 786 : AlterPublicationSchemas(stmt, tup, schemaidlist);
1589 : }
1590 :
1591 : /* Cleanup. */
1592 872 : heap_freetuple(tup);
1593 872 : table_close(rel, RowExclusiveLock);
1594 872 : }
1595 :
1596 : /*
1597 : * Remove relation from publication by mapping OID.
1598 : */
1599 : void
1600 846 : RemovePublicationRelById(Oid proid)
1601 : {
1602 : Relation rel;
1603 : HeapTuple tup;
1604 : Form_pg_publication_rel pubrel;
1605 846 : List *relids = NIL;
1606 :
1607 846 : rel = table_open(PublicationRelRelationId, RowExclusiveLock);
1608 :
1609 846 : tup = SearchSysCache1(PUBLICATIONREL, ObjectIdGetDatum(proid));
1610 :
1611 846 : if (!HeapTupleIsValid(tup))
1612 0 : elog(ERROR, "cache lookup failed for publication table %u",
1613 : proid);
1614 :
1615 846 : pubrel = (Form_pg_publication_rel) GETSTRUCT(tup);
1616 :
1617 : /*
1618 : * Invalidate relcache so that publication info is rebuilt.
1619 : *
1620 : * For the partitioned tables, we must invalidate all partitions contained
1621 : * in the respective partition hierarchies, not just the one explicitly
1622 : * mentioned in the publication. This is required because we implicitly
1623 : * publish the child tables when the parent table is published.
1624 : */
1625 846 : relids = GetPubPartitionOptionRelations(relids, PUBLICATION_PART_ALL,
1626 : pubrel->prrelid);
1627 :
1628 846 : InvalidatePublicationRels(relids);
1629 :
1630 846 : CatalogTupleDelete(rel, &tup->t_self);
1631 :
1632 846 : ReleaseSysCache(tup);
1633 :
1634 846 : table_close(rel, RowExclusiveLock);
1635 846 : }
1636 :
1637 : /*
1638 : * Remove the publication by mapping OID.
1639 : */
1640 : void
1641 512 : RemovePublicationById(Oid pubid)
1642 : {
1643 : Relation rel;
1644 : HeapTuple tup;
1645 : Form_pg_publication pubform;
1646 :
1647 512 : rel = table_open(PublicationRelationId, RowExclusiveLock);
1648 :
1649 512 : tup = SearchSysCache1(PUBLICATIONOID, ObjectIdGetDatum(pubid));
1650 512 : if (!HeapTupleIsValid(tup))
1651 0 : elog(ERROR, "cache lookup failed for publication %u", pubid);
1652 :
1653 512 : pubform = (Form_pg_publication) GETSTRUCT(tup);
1654 :
1655 : /* Invalidate relcache so that publication info is rebuilt. */
1656 512 : if (pubform->puballtables)
1657 78 : CacheInvalidateRelcacheAll();
1658 :
1659 512 : CatalogTupleDelete(rel, &tup->t_self);
1660 :
1661 512 : ReleaseSysCache(tup);
1662 :
1663 512 : table_close(rel, RowExclusiveLock);
1664 512 : }
1665 :
1666 : /*
1667 : * Remove schema from publication by mapping OID.
1668 : */
1669 : void
1670 192 : RemovePublicationSchemaById(Oid psoid)
1671 : {
1672 : Relation rel;
1673 : HeapTuple tup;
1674 192 : List *schemaRels = NIL;
1675 : Form_pg_publication_namespace pubsch;
1676 :
1677 192 : rel = table_open(PublicationNamespaceRelationId, RowExclusiveLock);
1678 :
1679 192 : tup = SearchSysCache1(PUBLICATIONNAMESPACE, ObjectIdGetDatum(psoid));
1680 :
1681 192 : if (!HeapTupleIsValid(tup))
1682 0 : elog(ERROR, "cache lookup failed for publication schema %u", psoid);
1683 :
1684 192 : pubsch = (Form_pg_publication_namespace) GETSTRUCT(tup);
1685 :
1686 : /*
1687 : * Invalidate relcache so that publication info is rebuilt. See
1688 : * RemovePublicationRelById for why we need to consider all the
1689 : * partitions.
1690 : */
1691 192 : schemaRels = GetSchemaPublicationRelations(pubsch->pnnspid,
1692 : PUBLICATION_PART_ALL);
1693 192 : InvalidatePublicationRels(schemaRels);
1694 :
1695 192 : CatalogTupleDelete(rel, &tup->t_self);
1696 :
1697 192 : ReleaseSysCache(tup);
1698 :
1699 192 : table_close(rel, RowExclusiveLock);
1700 192 : }
1701 :
1702 : /*
1703 : * Open relations specified by a PublicationTable list.
1704 : * The returned tables are locked in ShareUpdateExclusiveLock mode in order to
1705 : * add them to a publication.
1706 : */
1707 : static List *
1708 1314 : OpenTableList(List *tables)
1709 : {
1710 1314 : List *relids = NIL;
1711 1314 : List *rels = NIL;
1712 : ListCell *lc;
1713 1314 : List *relids_with_rf = NIL;
1714 1314 : List *relids_with_collist = NIL;
1715 :
1716 : /*
1717 : * Open, share-lock, and check all the explicitly-specified relations
1718 : */
1719 2694 : foreach(lc, tables)
1720 : {
1721 1410 : PublicationTable *t = lfirst_node(PublicationTable, lc);
1722 1410 : bool recurse = t->relation->inh;
1723 : Relation rel;
1724 : Oid myrelid;
1725 : PublicationRelInfo *pub_rel;
1726 :
1727 : /* Allow query cancel in case this takes a long time */
1728 1410 : CHECK_FOR_INTERRUPTS();
1729 :
1730 1410 : rel = table_openrv(t->relation, ShareUpdateExclusiveLock);
1731 1404 : myrelid = RelationGetRelid(rel);
1732 :
1733 : /*
1734 : * Filter out duplicates if user specifies "foo, foo".
1735 : *
1736 : * Note that this algorithm is known to not be very efficient (O(N^2))
1737 : * but given that it only works on list of tables given to us by user
1738 : * it's deemed acceptable.
1739 : */
1740 1404 : if (list_member_oid(relids, myrelid))
1741 : {
1742 : /* Disallow duplicate tables if there are any with row filters. */
1743 24 : if (t->whereClause || list_member_oid(relids_with_rf, myrelid))
1744 12 : ereport(ERROR,
1745 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1746 : errmsg("conflicting or redundant WHERE clauses for table \"%s\"",
1747 : RelationGetRelationName(rel))));
1748 :
1749 : /* Disallow duplicate tables if there are any with column lists. */
1750 12 : if (t->columns || list_member_oid(relids_with_collist, myrelid))
1751 12 : ereport(ERROR,
1752 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1753 : errmsg("conflicting or redundant column lists for table \"%s\"",
1754 : RelationGetRelationName(rel))));
1755 :
1756 0 : table_close(rel, ShareUpdateExclusiveLock);
1757 0 : continue;
1758 : }
1759 :
1760 1380 : pub_rel = palloc(sizeof(PublicationRelInfo));
1761 1380 : pub_rel->relation = rel;
1762 1380 : pub_rel->whereClause = t->whereClause;
1763 1380 : pub_rel->columns = t->columns;
1764 1380 : rels = lappend(rels, pub_rel);
1765 1380 : relids = lappend_oid(relids, myrelid);
1766 :
1767 1380 : if (t->whereClause)
1768 404 : relids_with_rf = lappend_oid(relids_with_rf, myrelid);
1769 :
1770 1380 : if (t->columns)
1771 410 : relids_with_collist = lappend_oid(relids_with_collist, myrelid);
1772 :
1773 : /*
1774 : * Add children of this rel, if requested, so that they too are added
1775 : * to the publication. A partitioned table can't have any inheritance
1776 : * children other than its partitions, which need not be explicitly
1777 : * added to the publication.
1778 : */
1779 1380 : if (recurse && rel->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
1780 : {
1781 : List *children;
1782 : ListCell *child;
1783 :
1784 1156 : children = find_all_inheritors(myrelid, ShareUpdateExclusiveLock,
1785 : NULL);
1786 :
1787 2320 : foreach(child, children)
1788 : {
1789 1164 : Oid childrelid = lfirst_oid(child);
1790 :
1791 : /* Allow query cancel in case this takes a long time */
1792 1164 : CHECK_FOR_INTERRUPTS();
1793 :
1794 : /*
1795 : * Skip duplicates if user specified both parent and child
1796 : * tables.
1797 : */
1798 1164 : if (list_member_oid(relids, childrelid))
1799 : {
1800 : /*
1801 : * We don't allow to specify row filter for both parent
1802 : * and child table at the same time as it is not very
1803 : * clear which one should be given preference.
1804 : */
1805 1156 : if (childrelid != myrelid &&
1806 0 : (t->whereClause || list_member_oid(relids_with_rf, childrelid)))
1807 0 : ereport(ERROR,
1808 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1809 : errmsg("conflicting or redundant WHERE clauses for table \"%s\"",
1810 : RelationGetRelationName(rel))));
1811 :
1812 : /*
1813 : * We don't allow to specify column list for both parent
1814 : * and child table at the same time as it is not very
1815 : * clear which one should be given preference.
1816 : */
1817 1156 : if (childrelid != myrelid &&
1818 0 : (t->columns || list_member_oid(relids_with_collist, childrelid)))
1819 0 : ereport(ERROR,
1820 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1821 : errmsg("conflicting or redundant column lists for table \"%s\"",
1822 : RelationGetRelationName(rel))));
1823 :
1824 1156 : continue;
1825 : }
1826 :
1827 : /* find_all_inheritors already got lock */
1828 8 : rel = table_open(childrelid, NoLock);
1829 8 : pub_rel = palloc(sizeof(PublicationRelInfo));
1830 8 : pub_rel->relation = rel;
1831 : /* child inherits WHERE clause from parent */
1832 8 : pub_rel->whereClause = t->whereClause;
1833 :
1834 : /* child inherits column list from parent */
1835 8 : pub_rel->columns = t->columns;
1836 8 : rels = lappend(rels, pub_rel);
1837 8 : relids = lappend_oid(relids, childrelid);
1838 :
1839 8 : if (t->whereClause)
1840 2 : relids_with_rf = lappend_oid(relids_with_rf, childrelid);
1841 :
1842 8 : if (t->columns)
1843 0 : relids_with_collist = lappend_oid(relids_with_collist, childrelid);
1844 : }
1845 : }
1846 : }
1847 :
1848 1284 : list_free(relids);
1849 1284 : list_free(relids_with_rf);
1850 :
1851 1284 : return rels;
1852 : }
1853 :
1854 : /*
1855 : * Close all relations in the list.
1856 : */
1857 : static void
1858 1500 : CloseTableList(List *rels)
1859 : {
1860 : ListCell *lc;
1861 :
1862 3050 : foreach(lc, rels)
1863 : {
1864 : PublicationRelInfo *pub_rel;
1865 :
1866 1550 : pub_rel = (PublicationRelInfo *) lfirst(lc);
1867 1550 : table_close(pub_rel->relation, NoLock);
1868 : }
1869 :
1870 1500 : list_free_deep(rels);
1871 1500 : }
1872 :
1873 : /*
1874 : * Lock the schemas specified in the schema list in AccessShareLock mode in
1875 : * order to prevent concurrent schema deletion.
1876 : */
1877 : static void
1878 1036 : LockSchemaList(List *schemalist)
1879 : {
1880 : ListCell *lc;
1881 :
1882 1360 : foreach(lc, schemalist)
1883 : {
1884 324 : Oid schemaid = lfirst_oid(lc);
1885 :
1886 : /* Allow query cancel in case this takes a long time */
1887 324 : CHECK_FOR_INTERRUPTS();
1888 324 : LockDatabaseObject(NamespaceRelationId, schemaid, 0, AccessShareLock);
1889 :
1890 : /*
1891 : * It is possible that by the time we acquire the lock on schema,
1892 : * concurrent DDL has removed it. We can test this by checking the
1893 : * existence of schema.
1894 : */
1895 324 : if (!SearchSysCacheExists1(NAMESPACEOID, ObjectIdGetDatum(schemaid)))
1896 0 : ereport(ERROR,
1897 : errcode(ERRCODE_UNDEFINED_SCHEMA),
1898 : errmsg("schema with OID %u does not exist", schemaid));
1899 : }
1900 1036 : }
1901 :
1902 : /*
1903 : * Add listed tables to the publication.
1904 : */
1905 : static void
1906 1082 : PublicationAddTables(Oid pubid, List *rels, bool if_not_exists,
1907 : AlterPublicationStmt *stmt)
1908 : {
1909 : ListCell *lc;
1910 :
1911 2170 : foreach(lc, rels)
1912 : {
1913 1156 : PublicationRelInfo *pub_rel = (PublicationRelInfo *) lfirst(lc);
1914 1156 : Relation rel = pub_rel->relation;
1915 : ObjectAddress obj;
1916 :
1917 : /* Must be owner of the table or superuser. */
1918 1156 : if (!object_ownercheck(RelationRelationId, RelationGetRelid(rel), GetUserId()))
1919 6 : aclcheck_error(ACLCHECK_NOT_OWNER, get_relkind_objtype(rel->rd_rel->relkind),
1920 6 : RelationGetRelationName(rel));
1921 :
1922 1150 : obj = publication_add_relation(pubid, pub_rel, if_not_exists);
1923 1088 : if (stmt)
1924 : {
1925 628 : EventTriggerCollectSimpleCommand(obj, InvalidObjectAddress,
1926 : (Node *) stmt);
1927 :
1928 628 : InvokeObjectPostCreateHook(PublicationRelRelationId,
1929 : obj.objectId, 0);
1930 : }
1931 : }
1932 1014 : }
1933 :
1934 : /*
1935 : * Remove listed tables from the publication.
1936 : */
1937 : static void
1938 504 : PublicationDropTables(Oid pubid, List *rels, bool missing_ok)
1939 : {
1940 : ObjectAddress obj;
1941 : ListCell *lc;
1942 : Oid prid;
1943 :
1944 966 : foreach(lc, rels)
1945 : {
1946 480 : PublicationRelInfo *pubrel = (PublicationRelInfo *) lfirst(lc);
1947 480 : Relation rel = pubrel->relation;
1948 480 : Oid relid = RelationGetRelid(rel);
1949 :
1950 480 : if (pubrel->columns)
1951 0 : ereport(ERROR,
1952 : errcode(ERRCODE_SYNTAX_ERROR),
1953 : errmsg("column list must not be specified in ALTER PUBLICATION ... DROP"));
1954 :
1955 480 : prid = GetSysCacheOid2(PUBLICATIONRELMAP, Anum_pg_publication_rel_oid,
1956 : ObjectIdGetDatum(relid),
1957 : ObjectIdGetDatum(pubid));
1958 480 : if (!OidIsValid(prid))
1959 : {
1960 12 : if (missing_ok)
1961 0 : continue;
1962 :
1963 12 : ereport(ERROR,
1964 : (errcode(ERRCODE_UNDEFINED_OBJECT),
1965 : errmsg("relation \"%s\" is not part of the publication",
1966 : RelationGetRelationName(rel))));
1967 : }
1968 :
1969 468 : if (pubrel->whereClause)
1970 6 : ereport(ERROR,
1971 : (errcode(ERRCODE_SYNTAX_ERROR),
1972 : errmsg("cannot use a WHERE clause when removing a table from a publication")));
1973 :
1974 462 : ObjectAddressSet(obj, PublicationRelRelationId, prid);
1975 462 : performDeletion(&obj, DROP_CASCADE, 0);
1976 : }
1977 486 : }
1978 :
1979 : /*
1980 : * Add listed schemas to the publication.
1981 : */
1982 : static void
1983 588 : PublicationAddSchemas(Oid pubid, List *schemas, bool if_not_exists,
1984 : AlterPublicationStmt *stmt)
1985 : {
1986 : ListCell *lc;
1987 :
1988 838 : foreach(lc, schemas)
1989 : {
1990 262 : Oid schemaid = lfirst_oid(lc);
1991 : ObjectAddress obj;
1992 :
1993 262 : obj = publication_add_schema(pubid, schemaid, if_not_exists);
1994 250 : if (stmt)
1995 : {
1996 68 : EventTriggerCollectSimpleCommand(obj, InvalidObjectAddress,
1997 : (Node *) stmt);
1998 :
1999 68 : InvokeObjectPostCreateHook(PublicationNamespaceRelationId,
2000 : obj.objectId, 0);
2001 : }
2002 : }
2003 576 : }
2004 :
2005 : /*
2006 : * Remove listed schemas from the publication.
2007 : */
2008 : static void
2009 442 : PublicationDropSchemas(Oid pubid, List *schemas, bool missing_ok)
2010 : {
2011 : ObjectAddress obj;
2012 : ListCell *lc;
2013 : Oid psid;
2014 :
2015 492 : foreach(lc, schemas)
2016 : {
2017 56 : Oid schemaid = lfirst_oid(lc);
2018 :
2019 56 : psid = GetSysCacheOid2(PUBLICATIONNAMESPACEMAP,
2020 : Anum_pg_publication_namespace_oid,
2021 : ObjectIdGetDatum(schemaid),
2022 : ObjectIdGetDatum(pubid));
2023 56 : if (!OidIsValid(psid))
2024 : {
2025 6 : if (missing_ok)
2026 0 : continue;
2027 :
2028 6 : ereport(ERROR,
2029 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2030 : errmsg("tables from schema \"%s\" are not part of the publication",
2031 : get_namespace_name(schemaid))));
2032 : }
2033 :
2034 50 : ObjectAddressSet(obj, PublicationNamespaceRelationId, psid);
2035 50 : performDeletion(&obj, DROP_CASCADE, 0);
2036 : }
2037 436 : }
2038 :
2039 : /*
2040 : * Internal workhorse for changing a publication owner
2041 : */
2042 : static void
2043 36 : AlterPublicationOwner_internal(Relation rel, HeapTuple tup, Oid newOwnerId)
2044 : {
2045 : Form_pg_publication form;
2046 :
2047 36 : form = (Form_pg_publication) GETSTRUCT(tup);
2048 :
2049 36 : if (form->pubowner == newOwnerId)
2050 12 : return;
2051 :
2052 24 : if (!superuser())
2053 : {
2054 : AclResult aclresult;
2055 :
2056 : /* Must be owner */
2057 12 : if (!object_ownercheck(PublicationRelationId, form->oid, GetUserId()))
2058 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_PUBLICATION,
2059 0 : NameStr(form->pubname));
2060 :
2061 : /* Must be able to become new owner */
2062 12 : check_can_set_role(GetUserId(), newOwnerId);
2063 :
2064 : /* New owner must have CREATE privilege on database */
2065 12 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId, newOwnerId, ACL_CREATE);
2066 12 : if (aclresult != ACLCHECK_OK)
2067 0 : aclcheck_error(aclresult, OBJECT_DATABASE,
2068 0 : get_database_name(MyDatabaseId));
2069 :
2070 12 : if (!superuser_arg(newOwnerId))
2071 : {
2072 12 : if (form->puballtables || form->puballsequences ||
2073 6 : is_schema_publication(form->oid))
2074 6 : ereport(ERROR,
2075 : errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2076 : errmsg("permission denied to change owner of publication \"%s\"",
2077 : NameStr(form->pubname)),
2078 : errhint("The owner of a FOR ALL TABLES or ALL SEQUENCES or TABLES IN SCHEMA publication must be a superuser."));
2079 : }
2080 : }
2081 :
2082 18 : form->pubowner = newOwnerId;
2083 18 : CatalogTupleUpdate(rel, &tup->t_self, tup);
2084 :
2085 : /* Update owner dependency reference */
2086 18 : changeDependencyOnOwner(PublicationRelationId,
2087 : form->oid,
2088 : newOwnerId);
2089 :
2090 18 : InvokeObjectPostAlterHook(PublicationRelationId,
2091 : form->oid, 0);
2092 : }
2093 :
2094 : /*
2095 : * Change publication owner -- by name
2096 : */
2097 : ObjectAddress
2098 36 : AlterPublicationOwner(const char *name, Oid newOwnerId)
2099 : {
2100 : Oid pubid;
2101 : HeapTuple tup;
2102 : Relation rel;
2103 : ObjectAddress address;
2104 : Form_pg_publication pubform;
2105 :
2106 36 : rel = table_open(PublicationRelationId, RowExclusiveLock);
2107 :
2108 36 : tup = SearchSysCacheCopy1(PUBLICATIONNAME, CStringGetDatum(name));
2109 :
2110 36 : if (!HeapTupleIsValid(tup))
2111 0 : ereport(ERROR,
2112 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2113 : errmsg("publication \"%s\" does not exist", name)));
2114 :
2115 36 : pubform = (Form_pg_publication) GETSTRUCT(tup);
2116 36 : pubid = pubform->oid;
2117 :
2118 36 : AlterPublicationOwner_internal(rel, tup, newOwnerId);
2119 :
2120 30 : ObjectAddressSet(address, PublicationRelationId, pubid);
2121 :
2122 30 : heap_freetuple(tup);
2123 :
2124 30 : table_close(rel, RowExclusiveLock);
2125 :
2126 30 : return address;
2127 : }
2128 :
2129 : /*
2130 : * Change publication owner -- by OID
2131 : */
2132 : void
2133 0 : AlterPublicationOwner_oid(Oid pubid, Oid newOwnerId)
2134 : {
2135 : HeapTuple tup;
2136 : Relation rel;
2137 :
2138 0 : rel = table_open(PublicationRelationId, RowExclusiveLock);
2139 :
2140 0 : tup = SearchSysCacheCopy1(PUBLICATIONOID, ObjectIdGetDatum(pubid));
2141 :
2142 0 : if (!HeapTupleIsValid(tup))
2143 0 : ereport(ERROR,
2144 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2145 : errmsg("publication with OID %u does not exist", pubid)));
2146 :
2147 0 : AlterPublicationOwner_internal(rel, tup, newOwnerId);
2148 :
2149 0 : heap_freetuple(tup);
2150 :
2151 0 : table_close(rel, RowExclusiveLock);
2152 0 : }
2153 :
2154 : /*
2155 : * Extract the publish_generated_columns option value from a DefElem. "stored"
2156 : * and "none" values are accepted.
2157 : */
2158 : static char
2159 76 : defGetGeneratedColsOption(DefElem *def)
2160 : {
2161 76 : char *sval = "";
2162 :
2163 : /*
2164 : * A parameter value is required.
2165 : */
2166 76 : if (def->arg)
2167 : {
2168 70 : sval = defGetString(def);
2169 :
2170 70 : if (pg_strcasecmp(sval, "none") == 0)
2171 22 : return PUBLISH_GENCOLS_NONE;
2172 48 : if (pg_strcasecmp(sval, "stored") == 0)
2173 42 : return PUBLISH_GENCOLS_STORED;
2174 : }
2175 :
2176 12 : ereport(ERROR,
2177 : errcode(ERRCODE_SYNTAX_ERROR),
2178 : errmsg("invalid value for publication parameter \"%s\": \"%s\"", def->defname, sval),
2179 : errdetail("Valid values are \"%s\" and \"%s\".", "none", "stored"));
2180 :
2181 : return PUBLISH_GENCOLS_NONE; /* keep compiler quiet */
2182 : }
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