Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * pg_subscription.c
4 : * replication subscriptions
5 : *
6 : * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
7 : * Portions Copyright (c) 1994, Regents of the University of California
8 : *
9 : * IDENTIFICATION
10 : * src/backend/catalog/pg_subscription.c
11 : *
12 : *-------------------------------------------------------------------------
13 : */
14 :
15 : #include "postgres.h"
16 :
17 : #include "access/genam.h"
18 : #include "access/heapam.h"
19 : #include "access/htup_details.h"
20 : #include "access/tableam.h"
21 : #include "catalog/indexing.h"
22 : #include "catalog/pg_foreign_server.h"
23 : #include "catalog/pg_subscription.h"
24 : #include "catalog/pg_subscription_rel.h"
25 : #include "catalog/pg_type.h"
26 : #include "foreign/foreign.h"
27 : #include "miscadmin.h"
28 : #include "storage/lmgr.h"
29 : #include "utils/acl.h"
30 : #include "utils/array.h"
31 : #include "utils/builtins.h"
32 : #include "utils/fmgroids.h"
33 : #include "utils/lsyscache.h"
34 : #include "utils/pg_lsn.h"
35 : #include "utils/rel.h"
36 : #include "utils/syscache.h"
37 :
38 : static List *textarray_to_stringlist(ArrayType *textarray);
39 :
40 : /*
41 : * Add a comma-separated list of publication names to the 'dest' string.
42 : */
43 : void
44 536 : GetPublicationsStr(List *publications, StringInfo dest, bool quote_literal)
45 : {
46 : ListCell *lc;
47 536 : bool first = true;
48 :
49 : Assert(publications != NIL);
50 :
51 1380 : foreach(lc, publications)
52 : {
53 844 : char *pubname = strVal(lfirst(lc));
54 :
55 844 : if (first)
56 536 : first = false;
57 : else
58 308 : appendStringInfoString(dest, ", ");
59 :
60 844 : if (quote_literal)
61 834 : appendStringInfoString(dest, quote_literal_cstr(pubname));
62 : else
63 : {
64 10 : appendStringInfoChar(dest, '"');
65 10 : appendStringInfoString(dest, pubname);
66 10 : appendStringInfoChar(dest, '"');
67 : }
68 : }
69 536 : }
70 :
71 : /*
72 : * Fetch the subscription from the syscache.
73 : */
74 : Subscription *
75 983 : GetSubscription(Oid subid, bool missing_ok, bool aclcheck)
76 : {
77 : HeapTuple tup;
78 : Subscription *sub;
79 : Form_pg_subscription subform;
80 : Datum datum;
81 : bool isnull;
82 :
83 983 : tup = SearchSysCache1(SUBSCRIPTIONOID, ObjectIdGetDatum(subid));
84 :
85 983 : if (!HeapTupleIsValid(tup))
86 : {
87 58 : if (missing_ok)
88 58 : return NULL;
89 :
90 0 : elog(ERROR, "cache lookup failed for subscription %u", subid);
91 : }
92 :
93 925 : subform = (Form_pg_subscription) GETSTRUCT(tup);
94 :
95 925 : sub = palloc_object(Subscription);
96 925 : sub->oid = subid;
97 925 : sub->dbid = subform->subdbid;
98 925 : sub->skiplsn = subform->subskiplsn;
99 925 : sub->name = pstrdup(NameStr(subform->subname));
100 925 : sub->owner = subform->subowner;
101 925 : sub->enabled = subform->subenabled;
102 925 : sub->binary = subform->subbinary;
103 925 : sub->stream = subform->substream;
104 925 : sub->twophasestate = subform->subtwophasestate;
105 925 : sub->disableonerr = subform->subdisableonerr;
106 925 : sub->passwordrequired = subform->subpasswordrequired;
107 925 : sub->runasowner = subform->subrunasowner;
108 925 : sub->failover = subform->subfailover;
109 925 : sub->retaindeadtuples = subform->subretaindeadtuples;
110 925 : sub->maxretention = subform->submaxretention;
111 925 : sub->retentionactive = subform->subretentionactive;
112 :
113 : /* Get conninfo */
114 925 : if (OidIsValid(subform->subserver))
115 : {
116 : AclResult aclresult;
117 :
118 : /* recheck ACL if requested */
119 10 : if (aclcheck)
120 : {
121 5 : aclresult = object_aclcheck(ForeignServerRelationId,
122 : subform->subserver,
123 : subform->subowner, ACL_USAGE);
124 :
125 5 : if (aclresult != ACLCHECK_OK)
126 0 : ereport(ERROR,
127 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
128 : errmsg("subscription owner \"%s\" does not have permission on foreign server \"%s\"",
129 : GetUserNameFromId(subform->subowner, false),
130 : ForeignServerName(subform->subserver))));
131 : }
132 :
133 10 : sub->conninfo = ForeignServerConnectionString(subform->subowner,
134 : subform->subserver);
135 : }
136 : else
137 : {
138 915 : datum = SysCacheGetAttrNotNull(SUBSCRIPTIONOID,
139 : tup,
140 : Anum_pg_subscription_subconninfo);
141 915 : sub->conninfo = TextDatumGetCString(datum);
142 : }
143 :
144 : /* Get slotname */
145 925 : datum = SysCacheGetAttr(SUBSCRIPTIONOID,
146 : tup,
147 : Anum_pg_subscription_subslotname,
148 : &isnull);
149 925 : if (!isnull)
150 881 : sub->slotname = pstrdup(NameStr(*DatumGetName(datum)));
151 : else
152 44 : sub->slotname = NULL;
153 :
154 : /* Get synccommit */
155 925 : datum = SysCacheGetAttrNotNull(SUBSCRIPTIONOID,
156 : tup,
157 : Anum_pg_subscription_subsynccommit);
158 925 : sub->synccommit = TextDatumGetCString(datum);
159 :
160 : /* Get walrcvtimeout */
161 925 : datum = SysCacheGetAttrNotNull(SUBSCRIPTIONOID,
162 : tup,
163 : Anum_pg_subscription_subwalrcvtimeout);
164 925 : sub->walrcvtimeout = TextDatumGetCString(datum);
165 :
166 : /* Get publications */
167 925 : datum = SysCacheGetAttrNotNull(SUBSCRIPTIONOID,
168 : tup,
169 : Anum_pg_subscription_subpublications);
170 925 : sub->publications = textarray_to_stringlist(DatumGetArrayTypeP(datum));
171 :
172 : /* Get origin */
173 925 : datum = SysCacheGetAttrNotNull(SUBSCRIPTIONOID,
174 : tup,
175 : Anum_pg_subscription_suborigin);
176 925 : sub->origin = TextDatumGetCString(datum);
177 :
178 : /* Is the subscription owner a superuser? */
179 925 : sub->ownersuperuser = superuser_arg(sub->owner);
180 :
181 925 : ReleaseSysCache(tup);
182 :
183 925 : return sub;
184 : }
185 :
186 : /*
187 : * Return number of subscriptions defined in given database.
188 : * Used by dropdb() to check if database can indeed be dropped.
189 : */
190 : int
191 51 : CountDBSubscriptions(Oid dbid)
192 : {
193 51 : int nsubs = 0;
194 : Relation rel;
195 : ScanKeyData scankey;
196 : SysScanDesc scan;
197 : HeapTuple tup;
198 :
199 51 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
200 :
201 51 : ScanKeyInit(&scankey,
202 : Anum_pg_subscription_subdbid,
203 : BTEqualStrategyNumber, F_OIDEQ,
204 : ObjectIdGetDatum(dbid));
205 :
206 51 : scan = systable_beginscan(rel, InvalidOid, false,
207 : NULL, 1, &scankey);
208 :
209 51 : while (HeapTupleIsValid(tup = systable_getnext(scan)))
210 0 : nsubs++;
211 :
212 51 : systable_endscan(scan);
213 :
214 51 : table_close(rel, NoLock);
215 :
216 51 : return nsubs;
217 : }
218 :
219 : /*
220 : * Free memory allocated by subscription struct.
221 : */
222 : void
223 40 : FreeSubscription(Subscription *sub)
224 : {
225 40 : pfree(sub->name);
226 40 : pfree(sub->conninfo);
227 40 : if (sub->slotname)
228 40 : pfree(sub->slotname);
229 40 : list_free_deep(sub->publications);
230 40 : pfree(sub);
231 40 : }
232 :
233 : /*
234 : * Disable the given subscription.
235 : */
236 : void
237 4 : DisableSubscription(Oid subid)
238 : {
239 : Relation rel;
240 : bool nulls[Natts_pg_subscription];
241 : bool replaces[Natts_pg_subscription];
242 : Datum values[Natts_pg_subscription];
243 : HeapTuple tup;
244 :
245 : /* Look up the subscription in the catalog */
246 4 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
247 4 : tup = SearchSysCacheCopy1(SUBSCRIPTIONOID, ObjectIdGetDatum(subid));
248 :
249 4 : if (!HeapTupleIsValid(tup))
250 0 : elog(ERROR, "cache lookup failed for subscription %u", subid);
251 :
252 4 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessShareLock);
253 :
254 : /* Form a new tuple. */
255 4 : memset(values, 0, sizeof(values));
256 4 : memset(nulls, false, sizeof(nulls));
257 4 : memset(replaces, false, sizeof(replaces));
258 :
259 : /* Set the subscription to disabled. */
260 4 : values[Anum_pg_subscription_subenabled - 1] = BoolGetDatum(false);
261 4 : replaces[Anum_pg_subscription_subenabled - 1] = true;
262 :
263 : /* Update the catalog */
264 4 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,
265 : replaces);
266 4 : CatalogTupleUpdate(rel, &tup->t_self, tup);
267 4 : heap_freetuple(tup);
268 :
269 4 : table_close(rel, NoLock);
270 4 : }
271 :
272 : /*
273 : * Convert text array to list of strings.
274 : *
275 : * Note: the resulting list of strings is pallocated here.
276 : */
277 : static List *
278 925 : textarray_to_stringlist(ArrayType *textarray)
279 : {
280 : Datum *elems;
281 : int nelems,
282 : i;
283 925 : List *res = NIL;
284 :
285 925 : deconstruct_array_builtin(textarray, TEXTOID, &elems, NULL, &nelems);
286 :
287 925 : if (nelems == 0)
288 0 : return NIL;
289 :
290 2273 : for (i = 0; i < nelems; i++)
291 1348 : res = lappend(res, makeString(TextDatumGetCString(elems[i])));
292 :
293 925 : return res;
294 : }
295 :
296 : /*
297 : * Add new state record for a subscription table.
298 : *
299 : * If retain_lock is true, then don't release the locks taken in this function.
300 : * We normally release the locks at the end of transaction but in binary-upgrade
301 : * mode, we expect to release those immediately.
302 : */
303 : void
304 223 : AddSubscriptionRelState(Oid subid, Oid relid, char state,
305 : XLogRecPtr sublsn, bool retain_lock)
306 : {
307 : Relation rel;
308 : HeapTuple tup;
309 : bool nulls[Natts_pg_subscription_rel];
310 : Datum values[Natts_pg_subscription_rel];
311 :
312 223 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessShareLock);
313 :
314 223 : rel = table_open(SubscriptionRelRelationId, RowExclusiveLock);
315 :
316 : /* Try finding existing mapping. */
317 223 : tup = SearchSysCacheCopy2(SUBSCRIPTIONRELMAP,
318 : ObjectIdGetDatum(relid),
319 : ObjectIdGetDatum(subid));
320 223 : if (HeapTupleIsValid(tup))
321 0 : elog(ERROR, "subscription relation %u in subscription %u already exists",
322 : relid, subid);
323 :
324 : /* Form the tuple. */
325 223 : memset(values, 0, sizeof(values));
326 223 : memset(nulls, false, sizeof(nulls));
327 223 : values[Anum_pg_subscription_rel_srsubid - 1] = ObjectIdGetDatum(subid);
328 223 : values[Anum_pg_subscription_rel_srrelid - 1] = ObjectIdGetDatum(relid);
329 223 : values[Anum_pg_subscription_rel_srsubstate - 1] = CharGetDatum(state);
330 223 : if (XLogRecPtrIsValid(sublsn))
331 2 : values[Anum_pg_subscription_rel_srsublsn - 1] = LSNGetDatum(sublsn);
332 : else
333 221 : nulls[Anum_pg_subscription_rel_srsublsn - 1] = true;
334 :
335 223 : tup = heap_form_tuple(RelationGetDescr(rel), values, nulls);
336 :
337 : /* Insert tuple into catalog. */
338 223 : CatalogTupleInsert(rel, tup);
339 :
340 223 : heap_freetuple(tup);
341 :
342 : /* Cleanup. */
343 223 : if (retain_lock)
344 : {
345 220 : table_close(rel, NoLock);
346 : }
347 : else
348 : {
349 3 : table_close(rel, RowExclusiveLock);
350 3 : UnlockSharedObject(SubscriptionRelationId, subid, 0, AccessShareLock);
351 : }
352 223 : }
353 :
354 : /*
355 : * Update the state of a subscription table.
356 : */
357 : void
358 796 : UpdateSubscriptionRelState(Oid subid, Oid relid, char state,
359 : XLogRecPtr sublsn, bool already_locked)
360 : {
361 : Relation rel;
362 : HeapTuple tup;
363 : bool nulls[Natts_pg_subscription_rel];
364 : Datum values[Natts_pg_subscription_rel];
365 : bool replaces[Natts_pg_subscription_rel];
366 :
367 796 : if (already_locked)
368 : {
369 : #ifdef USE_ASSERT_CHECKING
370 : LOCKTAG tag;
371 :
372 : Assert(CheckRelationOidLockedByMe(SubscriptionRelRelationId,
373 : RowExclusiveLock, true));
374 : SET_LOCKTAG_OBJECT(tag, InvalidOid, SubscriptionRelationId, subid, 0);
375 : Assert(LockHeldByMe(&tag, AccessShareLock, true));
376 : #endif
377 :
378 190 : rel = table_open(SubscriptionRelRelationId, NoLock);
379 : }
380 : else
381 : {
382 606 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessShareLock);
383 606 : rel = table_open(SubscriptionRelRelationId, RowExclusiveLock);
384 : }
385 :
386 : /* Try finding existing mapping. */
387 796 : tup = SearchSysCacheCopy2(SUBSCRIPTIONRELMAP,
388 : ObjectIdGetDatum(relid),
389 : ObjectIdGetDatum(subid));
390 796 : if (!HeapTupleIsValid(tup))
391 0 : elog(ERROR, "subscription relation %u in subscription %u does not exist",
392 : relid, subid);
393 :
394 : /* Update the tuple. */
395 796 : memset(values, 0, sizeof(values));
396 796 : memset(nulls, false, sizeof(nulls));
397 796 : memset(replaces, false, sizeof(replaces));
398 :
399 796 : replaces[Anum_pg_subscription_rel_srsubstate - 1] = true;
400 796 : values[Anum_pg_subscription_rel_srsubstate - 1] = CharGetDatum(state);
401 :
402 796 : replaces[Anum_pg_subscription_rel_srsublsn - 1] = true;
403 796 : if (XLogRecPtrIsValid(sublsn))
404 392 : values[Anum_pg_subscription_rel_srsublsn - 1] = LSNGetDatum(sublsn);
405 : else
406 404 : nulls[Anum_pg_subscription_rel_srsublsn - 1] = true;
407 :
408 796 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,
409 : replaces);
410 :
411 : /* Update the catalog. */
412 796 : CatalogTupleUpdate(rel, &tup->t_self, tup);
413 :
414 : /* Cleanup. */
415 796 : table_close(rel, NoLock);
416 796 : }
417 :
418 : /*
419 : * Get state of subscription table.
420 : *
421 : * Returns SUBREL_STATE_UNKNOWN when the table is not in the subscription.
422 : */
423 : char
424 1261 : GetSubscriptionRelState(Oid subid, Oid relid, XLogRecPtr *sublsn)
425 : {
426 : HeapTuple tup;
427 : char substate;
428 : bool isnull;
429 : Datum d;
430 : Relation rel;
431 :
432 : /*
433 : * This is to avoid the race condition with AlterSubscription which tries
434 : * to remove this relstate.
435 : */
436 1261 : rel = table_open(SubscriptionRelRelationId, AccessShareLock);
437 :
438 : /* Try finding the mapping. */
439 1261 : tup = SearchSysCache2(SUBSCRIPTIONRELMAP,
440 : ObjectIdGetDatum(relid),
441 : ObjectIdGetDatum(subid));
442 :
443 1261 : if (!HeapTupleIsValid(tup))
444 : {
445 24 : table_close(rel, AccessShareLock);
446 24 : *sublsn = InvalidXLogRecPtr;
447 24 : return SUBREL_STATE_UNKNOWN;
448 : }
449 :
450 : /* Get the state. */
451 1237 : substate = ((Form_pg_subscription_rel) GETSTRUCT(tup))->srsubstate;
452 :
453 : /* Get the LSN */
454 1237 : d = SysCacheGetAttr(SUBSCRIPTIONRELMAP, tup,
455 : Anum_pg_subscription_rel_srsublsn, &isnull);
456 1237 : if (isnull)
457 675 : *sublsn = InvalidXLogRecPtr;
458 : else
459 562 : *sublsn = DatumGetLSN(d);
460 :
461 : /* Cleanup */
462 1237 : ReleaseSysCache(tup);
463 :
464 1237 : table_close(rel, AccessShareLock);
465 :
466 1237 : return substate;
467 : }
468 :
469 : /*
470 : * Drop subscription relation mapping. These can be for a particular
471 : * subscription, or for a particular relation, or both.
472 : */
473 : void
474 32043 : RemoveSubscriptionRel(Oid subid, Oid relid)
475 : {
476 : Relation rel;
477 : TableScanDesc scan;
478 : ScanKeyData skey[2];
479 : HeapTuple tup;
480 32043 : int nkeys = 0;
481 :
482 32043 : rel = table_open(SubscriptionRelRelationId, RowExclusiveLock);
483 :
484 32043 : if (OidIsValid(subid))
485 : {
486 163 : ScanKeyInit(&skey[nkeys++],
487 : Anum_pg_subscription_rel_srsubid,
488 : BTEqualStrategyNumber,
489 : F_OIDEQ,
490 : ObjectIdGetDatum(subid));
491 : }
492 :
493 32043 : if (OidIsValid(relid))
494 : {
495 31901 : ScanKeyInit(&skey[nkeys++],
496 : Anum_pg_subscription_rel_srrelid,
497 : BTEqualStrategyNumber,
498 : F_OIDEQ,
499 : ObjectIdGetDatum(relid));
500 : }
501 :
502 : /* Do the search and delete what we found. */
503 32043 : scan = table_beginscan_catalog(rel, nkeys, skey);
504 32168 : while (HeapTupleIsValid(tup = heap_getnext(scan, ForwardScanDirection)))
505 : {
506 : Form_pg_subscription_rel subrel;
507 :
508 125 : subrel = (Form_pg_subscription_rel) GETSTRUCT(tup);
509 :
510 : /*
511 : * We don't allow to drop the relation mapping when the table
512 : * synchronization is in progress unless the caller updates the
513 : * corresponding subscription as well. This is to ensure that we don't
514 : * leave tablesync slots or origins in the system when the
515 : * corresponding table is dropped. For sequences, however, it's ok to
516 : * drop them since no separate slots or origins are created during
517 : * synchronization.
518 : */
519 125 : if (!OidIsValid(subid) &&
520 16 : subrel->srsubstate != SUBREL_STATE_READY &&
521 0 : get_rel_relkind(subrel->srrelid) != RELKIND_SEQUENCE)
522 : {
523 0 : ereport(ERROR,
524 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
525 : errmsg("could not drop relation mapping for subscription \"%s\"",
526 : get_subscription_name(subrel->srsubid, false)),
527 : errdetail("Table synchronization for relation \"%s\" is in progress and is in state \"%c\".",
528 : get_rel_name(relid), subrel->srsubstate),
529 :
530 : /*
531 : * translator: first %s is a SQL ALTER command and second %s is a
532 : * SQL DROP command
533 : */
534 : errhint("Use %s to enable subscription if not already enabled or use %s to drop the subscription.",
535 : "ALTER SUBSCRIPTION ... ENABLE",
536 : "DROP SUBSCRIPTION ...")));
537 : }
538 :
539 125 : CatalogTupleDelete(rel, &tup->t_self);
540 : }
541 32043 : table_endscan(scan);
542 :
543 32043 : table_close(rel, RowExclusiveLock);
544 32043 : }
545 :
546 : /*
547 : * Does the subscription have any tables?
548 : *
549 : * Use this function only to know true/false, and when you have no need for the
550 : * List returned by GetSubscriptionRelations.
551 : */
552 : bool
553 279 : HasSubscriptionTables(Oid subid)
554 : {
555 : Relation rel;
556 : ScanKeyData skey[1];
557 : SysScanDesc scan;
558 : HeapTuple tup;
559 279 : bool has_subtables = false;
560 :
561 279 : rel = table_open(SubscriptionRelRelationId, AccessShareLock);
562 :
563 279 : ScanKeyInit(&skey[0],
564 : Anum_pg_subscription_rel_srsubid,
565 : BTEqualStrategyNumber, F_OIDEQ,
566 : ObjectIdGetDatum(subid));
567 :
568 279 : scan = systable_beginscan(rel, InvalidOid, false,
569 : NULL, 1, skey);
570 :
571 317 : while (HeapTupleIsValid(tup = systable_getnext(scan)))
572 : {
573 : Form_pg_subscription_rel subrel;
574 : char relkind;
575 :
576 302 : subrel = (Form_pg_subscription_rel) GETSTRUCT(tup);
577 302 : relkind = get_rel_relkind(subrel->srrelid);
578 :
579 302 : if (relkind == RELKIND_RELATION ||
580 : relkind == RELKIND_PARTITIONED_TABLE)
581 : {
582 264 : has_subtables = true;
583 264 : break;
584 : }
585 : }
586 :
587 : /* Cleanup */
588 279 : systable_endscan(scan);
589 279 : table_close(rel, AccessShareLock);
590 :
591 279 : return has_subtables;
592 : }
593 :
594 : /*
595 : * Get the relations for the subscription.
596 : *
597 : * If not_ready is true, return only the relations that are not in a ready
598 : * state, otherwise return all the relations of the subscription. The
599 : * returned list is palloc'ed in the current memory context.
600 : */
601 : List *
602 1185 : GetSubscriptionRelations(Oid subid, bool tables, bool sequences,
603 : bool not_ready)
604 : {
605 1185 : List *res = NIL;
606 : Relation rel;
607 : HeapTuple tup;
608 1185 : int nkeys = 0;
609 : ScanKeyData skey[2];
610 : SysScanDesc scan;
611 :
612 : /* One or both of 'tables' and 'sequences' must be true. */
613 : Assert(tables || sequences);
614 :
615 1185 : rel = table_open(SubscriptionRelRelationId, AccessShareLock);
616 :
617 1185 : ScanKeyInit(&skey[nkeys++],
618 : Anum_pg_subscription_rel_srsubid,
619 : BTEqualStrategyNumber, F_OIDEQ,
620 : ObjectIdGetDatum(subid));
621 :
622 1185 : if (not_ready)
623 1147 : ScanKeyInit(&skey[nkeys++],
624 : Anum_pg_subscription_rel_srsubstate,
625 : BTEqualStrategyNumber, F_CHARNE,
626 : CharGetDatum(SUBREL_STATE_READY));
627 :
628 1185 : scan = systable_beginscan(rel, InvalidOid, false,
629 : NULL, nkeys, skey);
630 :
631 3103 : while (HeapTupleIsValid(tup = systable_getnext(scan)))
632 : {
633 : Form_pg_subscription_rel subrel;
634 : SubscriptionRelState *relstate;
635 : Datum d;
636 : bool isnull;
637 : char relkind;
638 :
639 1918 : subrel = (Form_pg_subscription_rel) GETSTRUCT(tup);
640 :
641 : /* Relation is either a sequence or a table */
642 1918 : relkind = get_rel_relkind(subrel->srrelid);
643 : Assert(relkind == RELKIND_SEQUENCE || relkind == RELKIND_RELATION ||
644 : relkind == RELKIND_PARTITIONED_TABLE);
645 :
646 : /* Skip sequences if they were not requested */
647 1918 : if ((relkind == RELKIND_SEQUENCE) && !sequences)
648 0 : continue;
649 :
650 : /* Skip tables if they were not requested */
651 1918 : if ((relkind == RELKIND_RELATION ||
652 1890 : relkind == RELKIND_PARTITIONED_TABLE) && !tables)
653 0 : continue;
654 :
655 1918 : relstate = palloc_object(SubscriptionRelState);
656 1918 : relstate->relid = subrel->srrelid;
657 1918 : relstate->state = subrel->srsubstate;
658 1918 : d = SysCacheGetAttr(SUBSCRIPTIONRELMAP, tup,
659 : Anum_pg_subscription_rel_srsublsn, &isnull);
660 1918 : if (isnull)
661 1580 : relstate->lsn = InvalidXLogRecPtr;
662 : else
663 338 : relstate->lsn = DatumGetLSN(d);
664 :
665 1918 : res = lappend(res, relstate);
666 : }
667 :
668 : /* Cleanup */
669 1185 : systable_endscan(scan);
670 1185 : table_close(rel, AccessShareLock);
671 :
672 1185 : return res;
673 : }
674 :
675 : /*
676 : * Update the dead tuple retention status for the given subscription.
677 : */
678 : void
679 2 : UpdateDeadTupleRetentionStatus(Oid subid, bool active)
680 : {
681 : Relation rel;
682 : bool nulls[Natts_pg_subscription];
683 : bool replaces[Natts_pg_subscription];
684 : Datum values[Natts_pg_subscription];
685 : HeapTuple tup;
686 :
687 : /* Look up the subscription in the catalog */
688 2 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
689 2 : tup = SearchSysCacheCopy1(SUBSCRIPTIONOID, ObjectIdGetDatum(subid));
690 :
691 2 : if (!HeapTupleIsValid(tup))
692 0 : elog(ERROR, "cache lookup failed for subscription %u", subid);
693 :
694 2 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessShareLock);
695 :
696 : /* Form a new tuple. */
697 2 : memset(values, 0, sizeof(values));
698 2 : memset(nulls, false, sizeof(nulls));
699 2 : memset(replaces, false, sizeof(replaces));
700 :
701 : /* Set the subscription to disabled. */
702 2 : values[Anum_pg_subscription_subretentionactive - 1] = active;
703 2 : replaces[Anum_pg_subscription_subretentionactive - 1] = true;
704 :
705 : /* Update the catalog */
706 2 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,
707 : replaces);
708 2 : CatalogTupleUpdate(rel, &tup->t_self, tup);
709 2 : heap_freetuple(tup);
710 :
711 2 : table_close(rel, NoLock);
712 2 : }
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