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
77 960 : 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 :
88 960 : *publish_given = false;
89 960 : *publish_via_partition_root_given = false;
90 960 : *publish_generated_columns_given = false;
91 :
92 : /* defaults */
93 960 : pubactions->pubinsert = true;
94 960 : pubactions->pubupdate = true;
95 960 : pubactions->pubdelete = true;
96 960 : pubactions->pubtruncate = true;
97 960 : *publish_via_partition_root = false;
98 960 : *publish_generated_columns = PUBLISH_GENCOLS_NONE;
99 :
100 : /* Parse options */
101 1310 : foreach(lc, options)
102 : {
103 386 : DefElem *defel = (DefElem *) lfirst(lc);
104 :
105 386 : if (strcmp(defel->defname, "publish") == 0)
106 : {
107 : char *publish;
108 : List *publish_list;
109 : ListCell *lc2;
110 :
111 132 : 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 : */
118 132 : pubactions->pubinsert = false;
119 132 : pubactions->pubupdate = false;
120 132 : pubactions->pubdelete = false;
121 132 : pubactions->pubtruncate = false;
122 :
123 132 : *publish_given = true;
124 132 : publish = defGetString(defel);
125 :
126 132 : 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. */
133 320 : foreach(lc2, publish_list)
134 : {
135 194 : char *publish_opt = (char *) lfirst(lc2);
136 :
137 194 : if (strcmp(publish_opt, "insert") == 0)
138 118 : 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 : }
152 254 : 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 82 : else if (strcmp(defel->defname, "publish_generated_columns") == 0)
160 : {
161 76 : if (*publish_generated_columns_given)
162 6 : errorConflictingDefElem(defel, pstate);
163 70 : *publish_generated_columns_given = true;
164 70 : *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 : }
171 924 : }
172 :
173 : /*
174 : * Convert the PublicationObjSpecType list into schema oid list and
175 : * PublicationTable list.
176 : */
177 : static void
178 1694 : ObjectsInPublicationToOids(List *pubobjspec_list, ParseState *pstate,
179 : List **rels, List **schemas)
180 : {
181 : ListCell *cell;
182 : PublicationObjSpec *pubobj;
183 :
184 1694 : if (!pubobjspec_list)
185 104 : return;
186 :
187 3374 : foreach(cell, pubobjspec_list)
188 : {
189 : Oid schemaid;
190 : List *search_path;
191 :
192 1820 : pubobj = (PublicationObjSpec *) lfirst(cell);
193 :
194 1820 : switch (pubobj->pubobjtype)
195 : {
196 1424 : case PUBLICATIONOBJ_TABLE:
197 1424 : *rels = lappend(*rels, pubobj->pubtable);
198 1424 : 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
270 724 : pub_rf_contains_invalid_column(Oid pubid, Relation relation, List *ancestors,
271 : bool pubviaroot)
272 : {
273 : HeapTuple rftuple;
274 724 : Oid relid = RelationGetRelid(relation);
275 724 : Oid publish_as_relid = RelationGetRelid(relation);
276 724 : 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 : */
284 724 : if (relation->rd_rel->relreplident == REPLICA_IDENTITY_FULL)
285 192 : 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 : */
295 532 : 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 :
304 532 : rftuple = SearchSysCache2(PUBLICATIONRELMAP,
305 : ObjectIdGetDatum(publish_as_relid),
306 : ObjectIdGetDatum(pubid));
307 :
308 532 : if (!HeapTupleIsValid(rftuple))
309 56 : return false;
310 :
311 476 : rfdatum = SysCacheGetAttr(PUBLICATIONRELMAP, rftuple,
312 : Anum_pg_publication_rel_prqual,
313 : &rfisnull);
314 :
315 476 : 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 :
334 476 : ReleaseSysCache(rftuple);
335 :
336 476 : 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
356 916 : 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 : {
361 916 : Oid relid = RelationGetRelid(relation);
362 916 : Oid publish_as_relid = RelationGetRelid(relation);
363 : Bitmapset *idattrs;
364 916 : Bitmapset *columns = NULL;
365 916 : TupleDesc desc = RelationGetDescr(relation);
366 : Publication *pub;
367 : int x;
368 :
369 916 : *invalid_column_list = false;
370 916 : *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 : */
380 916 : 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 */
389 916 : pub = GetPublication(pubid);
390 916 : check_and_fetch_column_list(pub, publish_as_relid, NULL, &columns);
391 :
392 916 : if (relation->rd_rel->relreplident == REPLICA_IDENTITY_FULL)
393 : {
394 : /* With REPLICA IDENTITY FULL, no column list is allowed. */
395 206 : *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 : */
402 206 : if (pubgencols_type != PUBLISH_GENCOLS_STORED &&
403 194 : relation->rd_att->constr &&
404 82 : 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 : */
411 206 : if (relation->rd_att->constr &&
412 94 : relation->rd_att->constr->has_generated_virtual)
413 12 : *invalid_gen_col = true;
414 :
415 206 : if (*invalid_gen_col && *invalid_column_list)
416 0 : return true;
417 : }
418 :
419 : /* Remember columns that are part of the REPLICA IDENTITY */
420 916 : 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 : */
429 916 : x = -1;
430 1570 : while ((x = bms_next_member(idattrs, x)) >= 0)
431 : {
432 660 : AttrNumber attnum = (x + FirstLowInvalidHeapAttributeNumber);
433 660 : Form_pg_attribute att = TupleDescAttr(desc, attnum - 1);
434 :
435 660 : 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 : */
441 450 : 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 : */
451 444 : 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 */
458 444 : 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 :
487 916 : bms_free(columns);
488 916 : bms_free(idattrs);
489 :
490 916 : 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 1182 : TransformPubWhereClauses(List *tables, const char *queryString,
702 : bool pubviaroot)
703 : {
704 : ListCell *lc;
705 :
706 2378 : foreach(lc, tables)
707 : {
708 : ParseNamespaceItem *nsitem;
709 1256 : Node *whereclause = NULL;
710 : ParseState *pstate;
711 1256 : PublicationRelInfo *pri = (PublicationRelInfo *) lfirst(lc);
712 :
713 1256 : if (pri->whereClause == NULL)
714 862 : 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 1122 : }
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 1122 : CheckPubRelationColumnList(char *pubname, List *tables,
776 : bool publish_schema, bool pubviaroot)
777 : {
778 : ListCell *lc;
779 :
780 2288 : foreach(lc, tables)
781 : {
782 1196 : PublicationRelInfo *pri = (PublicationRelInfo *) lfirst(lc);
783 :
784 1196 : if (pri->columns == NIL)
785 792 : 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 1092 : }
821 :
822 : /*
823 : * Create new publication.
824 : */
825 : ObjectAddress
826 856 : 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;
841 856 : List *relations = NIL;
842 856 : List *schemaidlist = NIL;
843 :
844 : /* must have CREATE privilege on database */
845 856 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId, GetUserId(), ACL_CREATE);
846 856 : if (aclresult != ACLCHECK_OK)
847 6 : aclcheck_error(aclresult, OBJECT_DATABASE,
848 6 : get_database_name(MyDatabaseId));
849 :
850 : /* FOR ALL TABLES requires superuser */
851 850 : if (stmt->for_all_tables && !superuser())
852 0 : ereport(ERROR,
853 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
854 : errmsg("must be superuser to create FOR ALL TABLES publication")));
855 :
856 850 : rel = table_open(PublicationRelationId, RowExclusiveLock);
857 :
858 : /* Check if name is used */
859 850 : puboid = GetSysCacheOid1(PUBLICATIONNAME, Anum_pg_publication_oid,
860 : CStringGetDatum(stmt->pubname));
861 850 : if (OidIsValid(puboid))
862 6 : ereport(ERROR,
863 : (errcode(ERRCODE_DUPLICATE_OBJECT),
864 : errmsg("publication \"%s\" already exists",
865 : stmt->pubname)));
866 :
867 : /* Form a tuple. */
868 844 : memset(values, 0, sizeof(values));
869 844 : memset(nulls, false, sizeof(nulls));
870 :
871 844 : values[Anum_pg_publication_pubname - 1] =
872 844 : DirectFunctionCall1(namein, CStringGetDatum(stmt->pubname));
873 844 : values[Anum_pg_publication_pubowner - 1] = ObjectIdGetDatum(GetUserId());
874 :
875 844 : parse_publication_options(pstate,
876 : stmt->options,
877 : &publish_given, &pubactions,
878 : &publish_via_partition_root_given,
879 : &publish_via_partition_root,
880 : &publish_generated_columns_given,
881 : &publish_generated_columns);
882 :
883 808 : puboid = GetNewOidWithIndex(rel, PublicationObjectIndexId,
884 : Anum_pg_publication_oid);
885 808 : values[Anum_pg_publication_oid - 1] = ObjectIdGetDatum(puboid);
886 808 : values[Anum_pg_publication_puballtables - 1] =
887 808 : BoolGetDatum(stmt->for_all_tables);
888 808 : values[Anum_pg_publication_pubinsert - 1] =
889 808 : BoolGetDatum(pubactions.pubinsert);
890 808 : values[Anum_pg_publication_pubupdate - 1] =
891 808 : BoolGetDatum(pubactions.pubupdate);
892 808 : values[Anum_pg_publication_pubdelete - 1] =
893 808 : BoolGetDatum(pubactions.pubdelete);
894 808 : values[Anum_pg_publication_pubtruncate - 1] =
895 808 : BoolGetDatum(pubactions.pubtruncate);
896 808 : values[Anum_pg_publication_pubviaroot - 1] =
897 808 : BoolGetDatum(publish_via_partition_root);
898 808 : values[Anum_pg_publication_pubgencols - 1] =
899 808 : CharGetDatum(publish_generated_columns);
900 :
901 808 : tup = heap_form_tuple(RelationGetDescr(rel), values, nulls);
902 :
903 : /* Insert tuple into catalog. */
904 808 : CatalogTupleInsert(rel, tup);
905 808 : heap_freetuple(tup);
906 :
907 808 : recordDependencyOnOwner(PublicationRelationId, puboid, GetUserId());
908 :
909 808 : ObjectAddressSet(myself, PublicationRelationId, puboid);
910 :
911 : /* Make the changes visible. */
912 808 : CommandCounterIncrement();
913 :
914 : /* Associate objects with the publication. */
915 808 : if (stmt->for_all_tables)
916 : {
917 : /* Invalidate relcache so that publication info is rebuilt. */
918 88 : CacheInvalidateRelcacheAll();
919 : }
920 : else
921 : {
922 720 : ObjectsInPublicationToOids(stmt->pubobjects, pstate, &relations,
923 : &schemaidlist);
924 :
925 : /* FOR TABLES IN SCHEMA requires superuser */
926 702 : if (schemaidlist != NIL && !superuser())
927 6 : ereport(ERROR,
928 : errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
929 : errmsg("must be superuser to create FOR TABLES IN SCHEMA publication"));
930 :
931 696 : if (relations != NIL)
932 : {
933 : List *rels;
934 :
935 472 : rels = OpenTableList(relations);
936 442 : TransformPubWhereClauses(rels, pstate->p_sourcetext,
937 : publish_via_partition_root);
938 :
939 418 : CheckPubRelationColumnList(stmt->pubname, rels,
940 : schemaidlist != NIL,
941 : publish_via_partition_root);
942 :
943 412 : PublicationAddTables(puboid, rels, true, NULL);
944 386 : CloseTableList(rels);
945 : }
946 :
947 610 : if (schemaidlist != NIL)
948 : {
949 : /*
950 : * Schema lock is held until the publication is created to prevent
951 : * concurrent schema deletion.
952 : */
953 152 : LockSchemaList(schemaidlist);
954 152 : PublicationAddSchemas(puboid, schemaidlist, true, NULL);
955 : }
956 : }
957 :
958 692 : table_close(rel, RowExclusiveLock);
959 :
960 692 : InvokeObjectPostCreateHook(PublicationRelationId, puboid, 0);
961 :
962 692 : if (wal_level != WAL_LEVEL_LOGICAL)
963 402 : ereport(WARNING,
964 : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
965 : errmsg("\"wal_level\" is insufficient to publish logical changes"),
966 : errhint("Set \"wal_level\" to \"logical\" before creating subscriptions.")));
967 :
968 692 : return myself;
969 : }
970 :
971 : /*
972 : * Change options of a publication.
973 : */
974 : static void
975 116 : AlterPublicationOptions(ParseState *pstate, AlterPublicationStmt *stmt,
976 : Relation rel, HeapTuple tup)
977 : {
978 : bool nulls[Natts_pg_publication];
979 : bool replaces[Natts_pg_publication];
980 : Datum values[Natts_pg_publication];
981 : bool publish_given;
982 : PublicationActions pubactions;
983 : bool publish_via_partition_root_given;
984 : bool publish_via_partition_root;
985 : bool publish_generated_columns_given;
986 : char publish_generated_columns;
987 : ObjectAddress obj;
988 : Form_pg_publication pubform;
989 116 : List *root_relids = NIL;
990 : ListCell *lc;
991 :
992 116 : parse_publication_options(pstate,
993 : stmt->options,
994 : &publish_given, &pubactions,
995 : &publish_via_partition_root_given,
996 : &publish_via_partition_root,
997 : &publish_generated_columns_given,
998 : &publish_generated_columns);
999 :
1000 116 : pubform = (Form_pg_publication) GETSTRUCT(tup);
1001 :
1002 : /*
1003 : * If the publication doesn't publish changes via the root partitioned
1004 : * table, the partition's row filter and column list will be used. So
1005 : * disallow using WHERE clause and column lists on partitioned table in
1006 : * this case.
1007 : */
1008 116 : if (!pubform->puballtables && publish_via_partition_root_given &&
1009 80 : !publish_via_partition_root)
1010 : {
1011 : /*
1012 : * Lock the publication so nobody else can do anything with it. This
1013 : * prevents concurrent alter to add partitioned table(s) with WHERE
1014 : * clause(s) and/or column lists which we don't allow when not
1015 : * publishing via root.
1016 : */
1017 48 : LockDatabaseObject(PublicationRelationId, pubform->oid, 0,
1018 : AccessShareLock);
1019 :
1020 48 : root_relids = GetPublicationRelations(pubform->oid,
1021 : PUBLICATION_PART_ROOT);
1022 :
1023 84 : foreach(lc, root_relids)
1024 : {
1025 48 : Oid relid = lfirst_oid(lc);
1026 : HeapTuple rftuple;
1027 : char relkind;
1028 : char *relname;
1029 : bool has_rowfilter;
1030 : bool has_collist;
1031 :
1032 : /*
1033 : * Beware: we don't have lock on the relations, so cope silently
1034 : * with the cache lookups returning NULL.
1035 : */
1036 :
1037 48 : rftuple = SearchSysCache2(PUBLICATIONRELMAP,
1038 : ObjectIdGetDatum(relid),
1039 : ObjectIdGetDatum(pubform->oid));
1040 48 : if (!HeapTupleIsValid(rftuple))
1041 0 : continue;
1042 48 : has_rowfilter = !heap_attisnull(rftuple, Anum_pg_publication_rel_prqual, NULL);
1043 48 : has_collist = !heap_attisnull(rftuple, Anum_pg_publication_rel_prattrs, NULL);
1044 48 : if (!has_rowfilter && !has_collist)
1045 : {
1046 12 : ReleaseSysCache(rftuple);
1047 12 : continue;
1048 : }
1049 :
1050 36 : relkind = get_rel_relkind(relid);
1051 36 : if (relkind != RELKIND_PARTITIONED_TABLE)
1052 : {
1053 24 : ReleaseSysCache(rftuple);
1054 24 : continue;
1055 : }
1056 12 : relname = get_rel_name(relid);
1057 12 : if (relname == NULL) /* table concurrently dropped */
1058 : {
1059 0 : ReleaseSysCache(rftuple);
1060 0 : continue;
1061 : }
1062 :
1063 12 : if (has_rowfilter)
1064 6 : ereport(ERROR,
1065 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1066 : errmsg("cannot set parameter \"%s\" to false for publication \"%s\"",
1067 : "publish_via_partition_root",
1068 : stmt->pubname),
1069 : errdetail("The publication contains a WHERE clause for partitioned table \"%s\", which is not allowed when \"%s\" is false.",
1070 : relname, "publish_via_partition_root")));
1071 : Assert(has_collist);
1072 6 : ereport(ERROR,
1073 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1074 : errmsg("cannot set parameter \"%s\" to false for publication \"%s\"",
1075 : "publish_via_partition_root",
1076 : stmt->pubname),
1077 : errdetail("The publication contains a column list for partitioned table \"%s\", which is not allowed when \"%s\" is false.",
1078 : relname, "publish_via_partition_root")));
1079 : }
1080 : }
1081 :
1082 : /* Everything ok, form a new tuple. */
1083 104 : memset(values, 0, sizeof(values));
1084 104 : memset(nulls, false, sizeof(nulls));
1085 104 : memset(replaces, false, sizeof(replaces));
1086 :
1087 104 : if (publish_given)
1088 : {
1089 28 : values[Anum_pg_publication_pubinsert - 1] = BoolGetDatum(pubactions.pubinsert);
1090 28 : replaces[Anum_pg_publication_pubinsert - 1] = true;
1091 :
1092 28 : values[Anum_pg_publication_pubupdate - 1] = BoolGetDatum(pubactions.pubupdate);
1093 28 : replaces[Anum_pg_publication_pubupdate - 1] = true;
1094 :
1095 28 : values[Anum_pg_publication_pubdelete - 1] = BoolGetDatum(pubactions.pubdelete);
1096 28 : replaces[Anum_pg_publication_pubdelete - 1] = true;
1097 :
1098 28 : values[Anum_pg_publication_pubtruncate - 1] = BoolGetDatum(pubactions.pubtruncate);
1099 28 : replaces[Anum_pg_publication_pubtruncate - 1] = true;
1100 : }
1101 :
1102 104 : if (publish_via_partition_root_given)
1103 : {
1104 70 : values[Anum_pg_publication_pubviaroot - 1] = BoolGetDatum(publish_via_partition_root);
1105 70 : replaces[Anum_pg_publication_pubviaroot - 1] = true;
1106 : }
1107 :
1108 104 : if (publish_generated_columns_given)
1109 : {
1110 6 : values[Anum_pg_publication_pubgencols - 1] = CharGetDatum(publish_generated_columns);
1111 6 : replaces[Anum_pg_publication_pubgencols - 1] = true;
1112 : }
1113 :
1114 104 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,
1115 : replaces);
1116 :
1117 : /* Update the catalog. */
1118 104 : CatalogTupleUpdate(rel, &tup->t_self, tup);
1119 :
1120 104 : CommandCounterIncrement();
1121 :
1122 104 : pubform = (Form_pg_publication) GETSTRUCT(tup);
1123 :
1124 : /* Invalidate the relcache. */
1125 104 : if (pubform->puballtables)
1126 : {
1127 8 : CacheInvalidateRelcacheAll();
1128 : }
1129 : else
1130 : {
1131 96 : List *relids = NIL;
1132 96 : List *schemarelids = NIL;
1133 :
1134 : /*
1135 : * For any partitioned tables contained in the publication, we must
1136 : * invalidate all partitions contained in the respective partition
1137 : * trees, not just those explicitly mentioned in the publication.
1138 : */
1139 96 : if (root_relids == NIL)
1140 60 : relids = GetPublicationRelations(pubform->oid,
1141 : PUBLICATION_PART_ALL);
1142 : else
1143 : {
1144 : /*
1145 : * We already got tables explicitly mentioned in the publication.
1146 : * Now get all partitions for the partitioned table in the list.
1147 : */
1148 72 : foreach(lc, root_relids)
1149 36 : relids = GetPubPartitionOptionRelations(relids,
1150 : PUBLICATION_PART_ALL,
1151 : lfirst_oid(lc));
1152 : }
1153 :
1154 96 : schemarelids = GetAllSchemaPublicationRelations(pubform->oid,
1155 : PUBLICATION_PART_ALL);
1156 96 : relids = list_concat_unique_oid(relids, schemarelids);
1157 :
1158 96 : InvalidatePublicationRels(relids);
1159 : }
1160 :
1161 104 : ObjectAddressSet(obj, PublicationRelationId, pubform->oid);
1162 104 : EventTriggerCollectSimpleCommand(obj, InvalidObjectAddress,
1163 : (Node *) stmt);
1164 :
1165 104 : InvokeObjectPostAlterHook(PublicationRelationId, pubform->oid, 0);
1166 104 : }
1167 :
1168 : /*
1169 : * Invalidate the relations.
1170 : */
1171 : void
1172 2440 : InvalidatePublicationRels(List *relids)
1173 : {
1174 : /*
1175 : * We don't want to send too many individual messages, at some point it's
1176 : * cheaper to just reset whole relcache.
1177 : */
1178 2440 : if (list_length(relids) < MAX_RELCACHE_INVAL_MSGS)
1179 : {
1180 : ListCell *lc;
1181 :
1182 20584 : foreach(lc, relids)
1183 18144 : CacheInvalidateRelcacheByRelid(lfirst_oid(lc));
1184 : }
1185 : else
1186 0 : CacheInvalidateRelcacheAll();
1187 2440 : }
1188 :
1189 : /*
1190 : * Add or remove table to/from publication.
1191 : */
1192 : static void
1193 914 : AlterPublicationTables(AlterPublicationStmt *stmt, HeapTuple tup,
1194 : List *tables, const char *queryString,
1195 : bool publish_schema)
1196 : {
1197 914 : List *rels = NIL;
1198 914 : Form_pg_publication pubform = (Form_pg_publication) GETSTRUCT(tup);
1199 914 : Oid pubid = pubform->oid;
1200 :
1201 : /*
1202 : * Nothing to do if no objects, except in SET: for that it is quite
1203 : * possible that user has not specified any tables in which case we need
1204 : * to remove all the existing tables.
1205 : */
1206 914 : if (!tables && stmt->action != AP_SetObjects)
1207 76 : return;
1208 :
1209 838 : rels = OpenTableList(tables);
1210 :
1211 838 : if (stmt->action == AP_AddObjects)
1212 : {
1213 294 : TransformPubWhereClauses(rels, queryString, pubform->pubviaroot);
1214 :
1215 276 : publish_schema |= is_schema_publication(pubid);
1216 :
1217 276 : CheckPubRelationColumnList(stmt->pubname, rels, publish_schema,
1218 276 : pubform->pubviaroot);
1219 :
1220 264 : PublicationAddTables(pubid, rels, false, stmt);
1221 : }
1222 544 : else if (stmt->action == AP_DropObjects)
1223 98 : PublicationDropTables(pubid, rels, false);
1224 : else /* AP_SetObjects */
1225 : {
1226 446 : List *oldrelids = GetPublicationRelations(pubid,
1227 : PUBLICATION_PART_ROOT);
1228 446 : List *delrels = NIL;
1229 : ListCell *oldlc;
1230 :
1231 446 : TransformPubWhereClauses(rels, queryString, pubform->pubviaroot);
1232 :
1233 428 : CheckPubRelationColumnList(stmt->pubname, rels, publish_schema,
1234 428 : pubform->pubviaroot);
1235 :
1236 : /*
1237 : * To recreate the relation list for the publication, look for
1238 : * existing relations that do not need to be dropped.
1239 : */
1240 806 : foreach(oldlc, oldrelids)
1241 : {
1242 402 : Oid oldrelid = lfirst_oid(oldlc);
1243 : ListCell *newlc;
1244 : PublicationRelInfo *oldrel;
1245 402 : bool found = false;
1246 : HeapTuple rftuple;
1247 402 : Node *oldrelwhereclause = NULL;
1248 402 : Bitmapset *oldcolumns = NULL;
1249 :
1250 : /* look up the cache for the old relmap */
1251 402 : rftuple = SearchSysCache2(PUBLICATIONRELMAP,
1252 : ObjectIdGetDatum(oldrelid),
1253 : ObjectIdGetDatum(pubid));
1254 :
1255 : /*
1256 : * See if the existing relation currently has a WHERE clause or a
1257 : * column list. We need to compare those too.
1258 : */
1259 402 : if (HeapTupleIsValid(rftuple))
1260 : {
1261 402 : bool isnull = true;
1262 : Datum whereClauseDatum;
1263 : Datum columnListDatum;
1264 :
1265 : /* Load the WHERE clause for this table. */
1266 402 : whereClauseDatum = SysCacheGetAttr(PUBLICATIONRELMAP, rftuple,
1267 : Anum_pg_publication_rel_prqual,
1268 : &isnull);
1269 402 : if (!isnull)
1270 210 : oldrelwhereclause = stringToNode(TextDatumGetCString(whereClauseDatum));
1271 :
1272 : /* Transform the int2vector column list to a bitmap. */
1273 402 : columnListDatum = SysCacheGetAttr(PUBLICATIONRELMAP, rftuple,
1274 : Anum_pg_publication_rel_prattrs,
1275 : &isnull);
1276 :
1277 402 : if (!isnull)
1278 136 : oldcolumns = pub_collist_to_bitmapset(NULL, columnListDatum, NULL);
1279 :
1280 402 : ReleaseSysCache(rftuple);
1281 : }
1282 :
1283 778 : foreach(newlc, rels)
1284 : {
1285 : PublicationRelInfo *newpubrel;
1286 : Oid newrelid;
1287 404 : Bitmapset *newcolumns = NULL;
1288 :
1289 404 : newpubrel = (PublicationRelInfo *) lfirst(newlc);
1290 404 : newrelid = RelationGetRelid(newpubrel->relation);
1291 :
1292 : /*
1293 : * Validate the column list. If the column list or WHERE
1294 : * clause changes, then the validation done here will be
1295 : * duplicated inside PublicationAddTables(). The validation
1296 : * is cheap enough that that seems harmless.
1297 : */
1298 404 : newcolumns = pub_collist_validate(newpubrel->relation,
1299 : newpubrel->columns);
1300 :
1301 : /*
1302 : * Check if any of the new set of relations matches with the
1303 : * existing relations in the publication. Additionally, if the
1304 : * relation has an associated WHERE clause, check the WHERE
1305 : * expressions also match. Same for the column list. Drop the
1306 : * rest.
1307 : */
1308 392 : if (newrelid == oldrelid)
1309 : {
1310 284 : if (equal(oldrelwhereclause, newpubrel->whereClause) &&
1311 80 : bms_equal(oldcolumns, newcolumns))
1312 : {
1313 16 : found = true;
1314 16 : break;
1315 : }
1316 : }
1317 : }
1318 :
1319 : /*
1320 : * Add the non-matched relations to a list so that they can be
1321 : * dropped.
1322 : */
1323 390 : if (!found)
1324 : {
1325 374 : oldrel = palloc(sizeof(PublicationRelInfo));
1326 374 : oldrel->whereClause = NULL;
1327 374 : oldrel->columns = NIL;
1328 374 : oldrel->relation = table_open(oldrelid,
1329 : ShareUpdateExclusiveLock);
1330 374 : delrels = lappend(delrels, oldrel);
1331 : }
1332 : }
1333 :
1334 : /* And drop them. */
1335 404 : PublicationDropTables(pubid, delrels, true);
1336 :
1337 : /*
1338 : * Don't bother calculating the difference for adding, we'll catch and
1339 : * skip existing ones when doing catalog update.
1340 : */
1341 404 : PublicationAddTables(pubid, rels, true, stmt);
1342 :
1343 404 : CloseTableList(delrels);
1344 : }
1345 :
1346 706 : CloseTableList(rels);
1347 : }
1348 :
1349 : /*
1350 : * Alter the publication schemas.
1351 : *
1352 : * Add or remove schemas to/from publication.
1353 : */
1354 : static void
1355 782 : AlterPublicationSchemas(AlterPublicationStmt *stmt,
1356 : HeapTuple tup, List *schemaidlist)
1357 : {
1358 782 : Form_pg_publication pubform = (Form_pg_publication) GETSTRUCT(tup);
1359 :
1360 : /*
1361 : * Nothing to do if no objects, except in SET: for that it is quite
1362 : * possible that user has not specified any schemas in which case we need
1363 : * to remove all the existing schemas.
1364 : */
1365 782 : if (!schemaidlist && stmt->action != AP_SetObjects)
1366 302 : return;
1367 :
1368 : /*
1369 : * Schema lock is held until the publication is altered to prevent
1370 : * concurrent schema deletion.
1371 : */
1372 480 : LockSchemaList(schemaidlist);
1373 480 : if (stmt->action == AP_AddObjects)
1374 : {
1375 : ListCell *lc;
1376 : List *reloids;
1377 :
1378 38 : reloids = GetPublicationRelations(pubform->oid, PUBLICATION_PART_ROOT);
1379 :
1380 54 : foreach(lc, reloids)
1381 : {
1382 : HeapTuple coltuple;
1383 :
1384 22 : coltuple = SearchSysCache2(PUBLICATIONRELMAP,
1385 : ObjectIdGetDatum(lfirst_oid(lc)),
1386 : ObjectIdGetDatum(pubform->oid));
1387 :
1388 22 : if (!HeapTupleIsValid(coltuple))
1389 0 : continue;
1390 :
1391 : /*
1392 : * Disallow adding schema if column list is already part of the
1393 : * publication. See CheckPubRelationColumnList.
1394 : */
1395 22 : if (!heap_attisnull(coltuple, Anum_pg_publication_rel_prattrs, NULL))
1396 6 : ereport(ERROR,
1397 : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1398 : errmsg("cannot add schema to publication \"%s\"",
1399 : stmt->pubname),
1400 : errdetail("Schemas cannot be added if any tables that specify a column list are already part of the publication."));
1401 :
1402 16 : ReleaseSysCache(coltuple);
1403 : }
1404 :
1405 32 : PublicationAddSchemas(pubform->oid, schemaidlist, false, stmt);
1406 : }
1407 442 : else if (stmt->action == AP_DropObjects)
1408 38 : PublicationDropSchemas(pubform->oid, schemaidlist, false);
1409 : else /* AP_SetObjects */
1410 : {
1411 404 : List *oldschemaids = GetPublicationSchemas(pubform->oid);
1412 404 : List *delschemas = NIL;
1413 :
1414 : /* Identify which schemas should be dropped */
1415 404 : delschemas = list_difference_oid(oldschemaids, schemaidlist);
1416 :
1417 : /*
1418 : * Schema lock is held until the publication is altered to prevent
1419 : * concurrent schema deletion.
1420 : */
1421 404 : LockSchemaList(delschemas);
1422 :
1423 : /* And drop them */
1424 404 : PublicationDropSchemas(pubform->oid, delschemas, true);
1425 :
1426 : /*
1427 : * Don't bother calculating the difference for adding, we'll catch and
1428 : * skip existing ones when doing catalog update.
1429 : */
1430 404 : PublicationAddSchemas(pubform->oid, schemaidlist, true, stmt);
1431 : }
1432 : }
1433 :
1434 : /*
1435 : * Check if relations and schemas can be in a given publication and throw
1436 : * appropriate error if not.
1437 : */
1438 : static void
1439 956 : CheckAlterPublication(AlterPublicationStmt *stmt, HeapTuple tup,
1440 : List *tables, List *schemaidlist)
1441 : {
1442 956 : Form_pg_publication pubform = (Form_pg_publication) GETSTRUCT(tup);
1443 :
1444 956 : if ((stmt->action == AP_AddObjects || stmt->action == AP_SetObjects) &&
1445 104 : schemaidlist && !superuser())
1446 6 : ereport(ERROR,
1447 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1448 : errmsg("must be superuser to add or set schemas")));
1449 :
1450 : /*
1451 : * Check that user is allowed to manipulate the publication tables in
1452 : * schema
1453 : */
1454 950 : if (schemaidlist && pubform->puballtables)
1455 18 : ereport(ERROR,
1456 : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1457 : errmsg("publication \"%s\" is defined as FOR ALL TABLES",
1458 : NameStr(pubform->pubname)),
1459 : errdetail("Schemas cannot be added to or dropped from FOR ALL TABLES publications.")));
1460 :
1461 : /* Check that user is allowed to manipulate the publication tables. */
1462 932 : if (tables && pubform->puballtables)
1463 18 : ereport(ERROR,
1464 : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1465 : errmsg("publication \"%s\" is defined as FOR ALL TABLES",
1466 : NameStr(pubform->pubname)),
1467 : errdetail("Tables cannot be added to or dropped from FOR ALL TABLES publications.")));
1468 914 : }
1469 :
1470 : /*
1471 : * Alter the existing publication.
1472 : *
1473 : * This is dispatcher function for AlterPublicationOptions,
1474 : * AlterPublicationSchemas and AlterPublicationTables.
1475 : */
1476 : void
1477 1090 : AlterPublication(ParseState *pstate, AlterPublicationStmt *stmt)
1478 : {
1479 : Relation rel;
1480 : HeapTuple tup;
1481 : Form_pg_publication pubform;
1482 :
1483 1090 : rel = table_open(PublicationRelationId, RowExclusiveLock);
1484 :
1485 1090 : tup = SearchSysCacheCopy1(PUBLICATIONNAME,
1486 : CStringGetDatum(stmt->pubname));
1487 :
1488 1090 : if (!HeapTupleIsValid(tup))
1489 0 : ereport(ERROR,
1490 : (errcode(ERRCODE_UNDEFINED_OBJECT),
1491 : errmsg("publication \"%s\" does not exist",
1492 : stmt->pubname)));
1493 :
1494 1090 : pubform = (Form_pg_publication) GETSTRUCT(tup);
1495 :
1496 : /* must be owner */
1497 1090 : if (!object_ownercheck(PublicationRelationId, pubform->oid, GetUserId()))
1498 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_PUBLICATION,
1499 0 : stmt->pubname);
1500 :
1501 1090 : if (stmt->options)
1502 116 : AlterPublicationOptions(pstate, stmt, rel, tup);
1503 : else
1504 : {
1505 974 : List *relations = NIL;
1506 974 : List *schemaidlist = NIL;
1507 974 : Oid pubid = pubform->oid;
1508 :
1509 974 : ObjectsInPublicationToOids(stmt->pubobjects, pstate, &relations,
1510 : &schemaidlist);
1511 :
1512 956 : CheckAlterPublication(stmt, tup, relations, schemaidlist);
1513 :
1514 914 : heap_freetuple(tup);
1515 :
1516 : /* Lock the publication so nobody else can do anything with it. */
1517 914 : LockDatabaseObject(PublicationRelationId, pubid, 0,
1518 : AccessExclusiveLock);
1519 :
1520 : /*
1521 : * It is possible that by the time we acquire the lock on publication,
1522 : * concurrent DDL has removed it. We can test this by checking the
1523 : * existence of publication. We get the tuple again to avoid the risk
1524 : * of any publication option getting changed.
1525 : */
1526 914 : tup = SearchSysCacheCopy1(PUBLICATIONOID, ObjectIdGetDatum(pubid));
1527 914 : if (!HeapTupleIsValid(tup))
1528 0 : ereport(ERROR,
1529 : errcode(ERRCODE_UNDEFINED_OBJECT),
1530 : errmsg("publication \"%s\" does not exist",
1531 : stmt->pubname));
1532 :
1533 914 : AlterPublicationTables(stmt, tup, relations, pstate->p_sourcetext,
1534 : schemaidlist != NIL);
1535 782 : AlterPublicationSchemas(stmt, tup, schemaidlist);
1536 : }
1537 :
1538 : /* Cleanup. */
1539 868 : heap_freetuple(tup);
1540 868 : table_close(rel, RowExclusiveLock);
1541 868 : }
1542 :
1543 : /*
1544 : * Remove relation from publication by mapping OID.
1545 : */
1546 : void
1547 844 : RemovePublicationRelById(Oid proid)
1548 : {
1549 : Relation rel;
1550 : HeapTuple tup;
1551 : Form_pg_publication_rel pubrel;
1552 844 : List *relids = NIL;
1553 :
1554 844 : rel = table_open(PublicationRelRelationId, RowExclusiveLock);
1555 :
1556 844 : tup = SearchSysCache1(PUBLICATIONREL, ObjectIdGetDatum(proid));
1557 :
1558 844 : if (!HeapTupleIsValid(tup))
1559 0 : elog(ERROR, "cache lookup failed for publication table %u",
1560 : proid);
1561 :
1562 844 : pubrel = (Form_pg_publication_rel) GETSTRUCT(tup);
1563 :
1564 : /*
1565 : * Invalidate relcache so that publication info is rebuilt.
1566 : *
1567 : * For the partitioned tables, we must invalidate all partitions contained
1568 : * in the respective partition hierarchies, not just the one explicitly
1569 : * mentioned in the publication. This is required because we implicitly
1570 : * publish the child tables when the parent table is published.
1571 : */
1572 844 : relids = GetPubPartitionOptionRelations(relids, PUBLICATION_PART_ALL,
1573 : pubrel->prrelid);
1574 :
1575 844 : InvalidatePublicationRels(relids);
1576 :
1577 844 : CatalogTupleDelete(rel, &tup->t_self);
1578 :
1579 844 : ReleaseSysCache(tup);
1580 :
1581 844 : table_close(rel, RowExclusiveLock);
1582 844 : }
1583 :
1584 : /*
1585 : * Remove the publication by mapping OID.
1586 : */
1587 : void
1588 470 : RemovePublicationById(Oid pubid)
1589 : {
1590 : Relation rel;
1591 : HeapTuple tup;
1592 : Form_pg_publication pubform;
1593 :
1594 470 : rel = table_open(PublicationRelationId, RowExclusiveLock);
1595 :
1596 470 : tup = SearchSysCache1(PUBLICATIONOID, ObjectIdGetDatum(pubid));
1597 470 : if (!HeapTupleIsValid(tup))
1598 0 : elog(ERROR, "cache lookup failed for publication %u", pubid);
1599 :
1600 470 : pubform = (Form_pg_publication) GETSTRUCT(tup);
1601 :
1602 : /* Invalidate relcache so that publication info is rebuilt. */
1603 470 : if (pubform->puballtables)
1604 54 : CacheInvalidateRelcacheAll();
1605 :
1606 470 : CatalogTupleDelete(rel, &tup->t_self);
1607 :
1608 470 : ReleaseSysCache(tup);
1609 :
1610 470 : table_close(rel, RowExclusiveLock);
1611 470 : }
1612 :
1613 : /*
1614 : * Remove schema from publication by mapping OID.
1615 : */
1616 : void
1617 192 : RemovePublicationSchemaById(Oid psoid)
1618 : {
1619 : Relation rel;
1620 : HeapTuple tup;
1621 192 : List *schemaRels = NIL;
1622 : Form_pg_publication_namespace pubsch;
1623 :
1624 192 : rel = table_open(PublicationNamespaceRelationId, RowExclusiveLock);
1625 :
1626 192 : tup = SearchSysCache1(PUBLICATIONNAMESPACE, ObjectIdGetDatum(psoid));
1627 :
1628 192 : if (!HeapTupleIsValid(tup))
1629 0 : elog(ERROR, "cache lookup failed for publication schema %u", psoid);
1630 :
1631 192 : pubsch = (Form_pg_publication_namespace) GETSTRUCT(tup);
1632 :
1633 : /*
1634 : * Invalidate relcache so that publication info is rebuilt. See
1635 : * RemovePublicationRelById for why we need to consider all the
1636 : * partitions.
1637 : */
1638 192 : schemaRels = GetSchemaPublicationRelations(pubsch->pnnspid,
1639 : PUBLICATION_PART_ALL);
1640 192 : InvalidatePublicationRels(schemaRels);
1641 :
1642 192 : CatalogTupleDelete(rel, &tup->t_self);
1643 :
1644 192 : ReleaseSysCache(tup);
1645 :
1646 192 : table_close(rel, RowExclusiveLock);
1647 192 : }
1648 :
1649 : /*
1650 : * Open relations specified by a PublicationTable list.
1651 : * The returned tables are locked in ShareUpdateExclusiveLock mode in order to
1652 : * add them to a publication.
1653 : */
1654 : static List *
1655 1310 : OpenTableList(List *tables)
1656 : {
1657 1310 : List *relids = NIL;
1658 1310 : List *rels = NIL;
1659 : ListCell *lc;
1660 1310 : List *relids_with_rf = NIL;
1661 1310 : List *relids_with_collist = NIL;
1662 :
1663 : /*
1664 : * Open, share-lock, and check all the explicitly-specified relations
1665 : */
1666 2686 : foreach(lc, tables)
1667 : {
1668 1406 : PublicationTable *t = lfirst_node(PublicationTable, lc);
1669 1406 : bool recurse = t->relation->inh;
1670 : Relation rel;
1671 : Oid myrelid;
1672 : PublicationRelInfo *pub_rel;
1673 :
1674 : /* Allow query cancel in case this takes a long time */
1675 1406 : CHECK_FOR_INTERRUPTS();
1676 :
1677 1406 : rel = table_openrv(t->relation, ShareUpdateExclusiveLock);
1678 1400 : myrelid = RelationGetRelid(rel);
1679 :
1680 : /*
1681 : * Filter out duplicates if user specifies "foo, foo".
1682 : *
1683 : * Note that this algorithm is known to not be very efficient (O(N^2))
1684 : * but given that it only works on list of tables given to us by user
1685 : * it's deemed acceptable.
1686 : */
1687 1400 : if (list_member_oid(relids, myrelid))
1688 : {
1689 : /* Disallow duplicate tables if there are any with row filters. */
1690 24 : if (t->whereClause || list_member_oid(relids_with_rf, myrelid))
1691 12 : ereport(ERROR,
1692 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1693 : errmsg("conflicting or redundant WHERE clauses for table \"%s\"",
1694 : RelationGetRelationName(rel))));
1695 :
1696 : /* Disallow duplicate tables if there are any with column lists. */
1697 12 : if (t->columns || list_member_oid(relids_with_collist, myrelid))
1698 12 : ereport(ERROR,
1699 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1700 : errmsg("conflicting or redundant column lists for table \"%s\"",
1701 : RelationGetRelationName(rel))));
1702 :
1703 0 : table_close(rel, ShareUpdateExclusiveLock);
1704 0 : continue;
1705 : }
1706 :
1707 1376 : pub_rel = palloc(sizeof(PublicationRelInfo));
1708 1376 : pub_rel->relation = rel;
1709 1376 : pub_rel->whereClause = t->whereClause;
1710 1376 : pub_rel->columns = t->columns;
1711 1376 : rels = lappend(rels, pub_rel);
1712 1376 : relids = lappend_oid(relids, myrelid);
1713 :
1714 1376 : if (t->whereClause)
1715 404 : relids_with_rf = lappend_oid(relids_with_rf, myrelid);
1716 :
1717 1376 : if (t->columns)
1718 410 : relids_with_collist = lappend_oid(relids_with_collist, myrelid);
1719 :
1720 : /*
1721 : * Add children of this rel, if requested, so that they too are added
1722 : * to the publication. A partitioned table can't have any inheritance
1723 : * children other than its partitions, which need not be explicitly
1724 : * added to the publication.
1725 : */
1726 1376 : if (recurse && rel->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
1727 : {
1728 : List *children;
1729 : ListCell *child;
1730 :
1731 1152 : children = find_all_inheritors(myrelid, ShareUpdateExclusiveLock,
1732 : NULL);
1733 :
1734 2312 : foreach(child, children)
1735 : {
1736 1160 : Oid childrelid = lfirst_oid(child);
1737 :
1738 : /* Allow query cancel in case this takes a long time */
1739 1160 : CHECK_FOR_INTERRUPTS();
1740 :
1741 : /*
1742 : * Skip duplicates if user specified both parent and child
1743 : * tables.
1744 : */
1745 1160 : if (list_member_oid(relids, childrelid))
1746 : {
1747 : /*
1748 : * We don't allow to specify row filter for both parent
1749 : * and child table at the same time as it is not very
1750 : * clear which one should be given preference.
1751 : */
1752 1152 : if (childrelid != myrelid &&
1753 0 : (t->whereClause || list_member_oid(relids_with_rf, childrelid)))
1754 0 : ereport(ERROR,
1755 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1756 : errmsg("conflicting or redundant WHERE clauses for table \"%s\"",
1757 : RelationGetRelationName(rel))));
1758 :
1759 : /*
1760 : * We don't allow to specify column list for both parent
1761 : * and child table at the same time as it is not very
1762 : * clear which one should be given preference.
1763 : */
1764 1152 : if (childrelid != myrelid &&
1765 0 : (t->columns || list_member_oid(relids_with_collist, childrelid)))
1766 0 : ereport(ERROR,
1767 : (errcode(ERRCODE_DUPLICATE_OBJECT),
1768 : errmsg("conflicting or redundant column lists for table \"%s\"",
1769 : RelationGetRelationName(rel))));
1770 :
1771 1152 : continue;
1772 : }
1773 :
1774 : /* find_all_inheritors already got lock */
1775 8 : rel = table_open(childrelid, NoLock);
1776 8 : pub_rel = palloc(sizeof(PublicationRelInfo));
1777 8 : pub_rel->relation = rel;
1778 : /* child inherits WHERE clause from parent */
1779 8 : pub_rel->whereClause = t->whereClause;
1780 :
1781 : /* child inherits column list from parent */
1782 8 : pub_rel->columns = t->columns;
1783 8 : rels = lappend(rels, pub_rel);
1784 8 : relids = lappend_oid(relids, childrelid);
1785 :
1786 8 : if (t->whereClause)
1787 2 : relids_with_rf = lappend_oid(relids_with_rf, childrelid);
1788 :
1789 8 : if (t->columns)
1790 0 : relids_with_collist = lappend_oid(relids_with_collist, childrelid);
1791 : }
1792 : }
1793 : }
1794 :
1795 1280 : list_free(relids);
1796 1280 : list_free(relids_with_rf);
1797 :
1798 1280 : return rels;
1799 : }
1800 :
1801 : /*
1802 : * Close all relations in the list.
1803 : */
1804 : static void
1805 1496 : CloseTableList(List *rels)
1806 : {
1807 : ListCell *lc;
1808 :
1809 3042 : foreach(lc, rels)
1810 : {
1811 : PublicationRelInfo *pub_rel;
1812 :
1813 1546 : pub_rel = (PublicationRelInfo *) lfirst(lc);
1814 1546 : table_close(pub_rel->relation, NoLock);
1815 : }
1816 :
1817 1496 : list_free_deep(rels);
1818 1496 : }
1819 :
1820 : /*
1821 : * Lock the schemas specified in the schema list in AccessShareLock mode in
1822 : * order to prevent concurrent schema deletion.
1823 : */
1824 : static void
1825 1036 : LockSchemaList(List *schemalist)
1826 : {
1827 : ListCell *lc;
1828 :
1829 1360 : foreach(lc, schemalist)
1830 : {
1831 324 : Oid schemaid = lfirst_oid(lc);
1832 :
1833 : /* Allow query cancel in case this takes a long time */
1834 324 : CHECK_FOR_INTERRUPTS();
1835 324 : LockDatabaseObject(NamespaceRelationId, schemaid, 0, AccessShareLock);
1836 :
1837 : /*
1838 : * It is possible that by the time we acquire the lock on schema,
1839 : * concurrent DDL has removed it. We can test this by checking the
1840 : * existence of schema.
1841 : */
1842 324 : if (!SearchSysCacheExists1(NAMESPACEOID, ObjectIdGetDatum(schemaid)))
1843 0 : ereport(ERROR,
1844 : errcode(ERRCODE_UNDEFINED_SCHEMA),
1845 : errmsg("schema with OID %u does not exist", schemaid));
1846 : }
1847 1036 : }
1848 :
1849 : /*
1850 : * Add listed tables to the publication.
1851 : */
1852 : static void
1853 1080 : PublicationAddTables(Oid pubid, List *rels, bool if_not_exists,
1854 : AlterPublicationStmt *stmt)
1855 : {
1856 : ListCell *lc;
1857 :
1858 : Assert(!stmt || !stmt->for_all_tables);
1859 :
1860 2166 : foreach(lc, rels)
1861 : {
1862 1154 : PublicationRelInfo *pub_rel = (PublicationRelInfo *) lfirst(lc);
1863 1154 : Relation rel = pub_rel->relation;
1864 : ObjectAddress obj;
1865 :
1866 : /* Must be owner of the table or superuser. */
1867 1154 : if (!object_ownercheck(RelationRelationId, RelationGetRelid(rel), GetUserId()))
1868 6 : aclcheck_error(ACLCHECK_NOT_OWNER, get_relkind_objtype(rel->rd_rel->relkind),
1869 6 : RelationGetRelationName(rel));
1870 :
1871 1148 : obj = publication_add_relation(pubid, pub_rel, if_not_exists);
1872 1086 : if (stmt)
1873 : {
1874 626 : EventTriggerCollectSimpleCommand(obj, InvalidObjectAddress,
1875 : (Node *) stmt);
1876 :
1877 626 : InvokeObjectPostCreateHook(PublicationRelRelationId,
1878 : obj.objectId, 0);
1879 : }
1880 : }
1881 1012 : }
1882 :
1883 : /*
1884 : * Remove listed tables from the publication.
1885 : */
1886 : static void
1887 502 : PublicationDropTables(Oid pubid, List *rels, bool missing_ok)
1888 : {
1889 : ObjectAddress obj;
1890 : ListCell *lc;
1891 : Oid prid;
1892 :
1893 962 : foreach(lc, rels)
1894 : {
1895 478 : PublicationRelInfo *pubrel = (PublicationRelInfo *) lfirst(lc);
1896 478 : Relation rel = pubrel->relation;
1897 478 : Oid relid = RelationGetRelid(rel);
1898 :
1899 478 : if (pubrel->columns)
1900 0 : ereport(ERROR,
1901 : errcode(ERRCODE_SYNTAX_ERROR),
1902 : errmsg("column list must not be specified in ALTER PUBLICATION ... DROP"));
1903 :
1904 478 : prid = GetSysCacheOid2(PUBLICATIONRELMAP, Anum_pg_publication_rel_oid,
1905 : ObjectIdGetDatum(relid),
1906 : ObjectIdGetDatum(pubid));
1907 478 : if (!OidIsValid(prid))
1908 : {
1909 12 : if (missing_ok)
1910 0 : continue;
1911 :
1912 12 : ereport(ERROR,
1913 : (errcode(ERRCODE_UNDEFINED_OBJECT),
1914 : errmsg("relation \"%s\" is not part of the publication",
1915 : RelationGetRelationName(rel))));
1916 : }
1917 :
1918 466 : if (pubrel->whereClause)
1919 6 : ereport(ERROR,
1920 : (errcode(ERRCODE_SYNTAX_ERROR),
1921 : errmsg("cannot use a WHERE clause when removing a table from a publication")));
1922 :
1923 460 : ObjectAddressSet(obj, PublicationRelRelationId, prid);
1924 460 : performDeletion(&obj, DROP_CASCADE, 0);
1925 : }
1926 484 : }
1927 :
1928 : /*
1929 : * Add listed schemas to the publication.
1930 : */
1931 : static void
1932 588 : PublicationAddSchemas(Oid pubid, List *schemas, bool if_not_exists,
1933 : AlterPublicationStmt *stmt)
1934 : {
1935 : ListCell *lc;
1936 :
1937 : Assert(!stmt || !stmt->for_all_tables);
1938 :
1939 838 : foreach(lc, schemas)
1940 : {
1941 262 : Oid schemaid = lfirst_oid(lc);
1942 : ObjectAddress obj;
1943 :
1944 262 : obj = publication_add_schema(pubid, schemaid, if_not_exists);
1945 250 : if (stmt)
1946 : {
1947 68 : EventTriggerCollectSimpleCommand(obj, InvalidObjectAddress,
1948 : (Node *) stmt);
1949 :
1950 68 : InvokeObjectPostCreateHook(PublicationNamespaceRelationId,
1951 : obj.objectId, 0);
1952 : }
1953 : }
1954 576 : }
1955 :
1956 : /*
1957 : * Remove listed schemas from the publication.
1958 : */
1959 : static void
1960 442 : PublicationDropSchemas(Oid pubid, List *schemas, bool missing_ok)
1961 : {
1962 : ObjectAddress obj;
1963 : ListCell *lc;
1964 : Oid psid;
1965 :
1966 492 : foreach(lc, schemas)
1967 : {
1968 56 : Oid schemaid = lfirst_oid(lc);
1969 :
1970 56 : psid = GetSysCacheOid2(PUBLICATIONNAMESPACEMAP,
1971 : Anum_pg_publication_namespace_oid,
1972 : ObjectIdGetDatum(schemaid),
1973 : ObjectIdGetDatum(pubid));
1974 56 : if (!OidIsValid(psid))
1975 : {
1976 6 : if (missing_ok)
1977 0 : continue;
1978 :
1979 6 : ereport(ERROR,
1980 : (errcode(ERRCODE_UNDEFINED_OBJECT),
1981 : errmsg("tables from schema \"%s\" are not part of the publication",
1982 : get_namespace_name(schemaid))));
1983 : }
1984 :
1985 50 : ObjectAddressSet(obj, PublicationNamespaceRelationId, psid);
1986 50 : performDeletion(&obj, DROP_CASCADE, 0);
1987 : }
1988 436 : }
1989 :
1990 : /*
1991 : * Internal workhorse for changing a publication owner
1992 : */
1993 : static void
1994 36 : AlterPublicationOwner_internal(Relation rel, HeapTuple tup, Oid newOwnerId)
1995 : {
1996 : Form_pg_publication form;
1997 :
1998 36 : form = (Form_pg_publication) GETSTRUCT(tup);
1999 :
2000 36 : if (form->pubowner == newOwnerId)
2001 12 : return;
2002 :
2003 24 : if (!superuser())
2004 : {
2005 : AclResult aclresult;
2006 :
2007 : /* Must be owner */
2008 12 : if (!object_ownercheck(PublicationRelationId, form->oid, GetUserId()))
2009 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_PUBLICATION,
2010 0 : NameStr(form->pubname));
2011 :
2012 : /* Must be able to become new owner */
2013 12 : check_can_set_role(GetUserId(), newOwnerId);
2014 :
2015 : /* New owner must have CREATE privilege on database */
2016 12 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId, newOwnerId, ACL_CREATE);
2017 12 : if (aclresult != ACLCHECK_OK)
2018 0 : aclcheck_error(aclresult, OBJECT_DATABASE,
2019 0 : get_database_name(MyDatabaseId));
2020 :
2021 12 : if (form->puballtables && !superuser_arg(newOwnerId))
2022 0 : ereport(ERROR,
2023 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2024 : errmsg("permission denied to change owner of publication \"%s\"",
2025 : NameStr(form->pubname)),
2026 : errhint("The owner of a FOR ALL TABLES publication must be a superuser.")));
2027 :
2028 12 : if (!superuser_arg(newOwnerId) && is_schema_publication(form->oid))
2029 6 : ereport(ERROR,
2030 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2031 : errmsg("permission denied to change owner of publication \"%s\"",
2032 : NameStr(form->pubname)),
2033 : errhint("The owner of a FOR TABLES IN SCHEMA publication must be a superuser.")));
2034 : }
2035 :
2036 18 : form->pubowner = newOwnerId;
2037 18 : CatalogTupleUpdate(rel, &tup->t_self, tup);
2038 :
2039 : /* Update owner dependency reference */
2040 18 : changeDependencyOnOwner(PublicationRelationId,
2041 : form->oid,
2042 : newOwnerId);
2043 :
2044 18 : InvokeObjectPostAlterHook(PublicationRelationId,
2045 : form->oid, 0);
2046 : }
2047 :
2048 : /*
2049 : * Change publication owner -- by name
2050 : */
2051 : ObjectAddress
2052 36 : AlterPublicationOwner(const char *name, Oid newOwnerId)
2053 : {
2054 : Oid pubid;
2055 : HeapTuple tup;
2056 : Relation rel;
2057 : ObjectAddress address;
2058 : Form_pg_publication pubform;
2059 :
2060 36 : rel = table_open(PublicationRelationId, RowExclusiveLock);
2061 :
2062 36 : tup = SearchSysCacheCopy1(PUBLICATIONNAME, CStringGetDatum(name));
2063 :
2064 36 : if (!HeapTupleIsValid(tup))
2065 0 : ereport(ERROR,
2066 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2067 : errmsg("publication \"%s\" does not exist", name)));
2068 :
2069 36 : pubform = (Form_pg_publication) GETSTRUCT(tup);
2070 36 : pubid = pubform->oid;
2071 :
2072 36 : AlterPublicationOwner_internal(rel, tup, newOwnerId);
2073 :
2074 30 : ObjectAddressSet(address, PublicationRelationId, pubid);
2075 :
2076 30 : heap_freetuple(tup);
2077 :
2078 30 : table_close(rel, RowExclusiveLock);
2079 :
2080 30 : return address;
2081 : }
2082 :
2083 : /*
2084 : * Change publication owner -- by OID
2085 : */
2086 : void
2087 0 : AlterPublicationOwner_oid(Oid pubid, Oid newOwnerId)
2088 : {
2089 : HeapTuple tup;
2090 : Relation rel;
2091 :
2092 0 : rel = table_open(PublicationRelationId, RowExclusiveLock);
2093 :
2094 0 : tup = SearchSysCacheCopy1(PUBLICATIONOID, ObjectIdGetDatum(pubid));
2095 :
2096 0 : if (!HeapTupleIsValid(tup))
2097 0 : ereport(ERROR,
2098 : (errcode(ERRCODE_UNDEFINED_OBJECT),
2099 : errmsg("publication with OID %u does not exist", pubid)));
2100 :
2101 0 : AlterPublicationOwner_internal(rel, tup, newOwnerId);
2102 :
2103 0 : heap_freetuple(tup);
2104 :
2105 0 : table_close(rel, RowExclusiveLock);
2106 0 : }
2107 :
2108 : /*
2109 : * Extract the publish_generated_columns option value from a DefElem. "stored"
2110 : * and "none" values are accepted.
2111 : */
2112 : static char
2113 70 : defGetGeneratedColsOption(DefElem *def)
2114 : {
2115 70 : char *sval = "";
2116 :
2117 : /*
2118 : * A parameter value is required.
2119 : */
2120 70 : if (def->arg)
2121 : {
2122 64 : sval = defGetString(def);
2123 :
2124 64 : if (pg_strcasecmp(sval, "none") == 0)
2125 22 : return PUBLISH_GENCOLS_NONE;
2126 42 : if (pg_strcasecmp(sval, "stored") == 0)
2127 36 : return PUBLISH_GENCOLS_STORED;
2128 : }
2129 :
2130 12 : ereport(ERROR,
2131 : errcode(ERRCODE_SYNTAX_ERROR),
2132 : errmsg("invalid value for publication parameter \"%s\": \"%s\"", def->defname, sval),
2133 : errdetail("Valid values are \"%s\" and \"%s\".", "none", "stored"));
2134 :
2135 : return PUBLISH_GENCOLS_NONE; /* keep compiler quiet */
2136 : }
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