PostgreSQL Source Code  git master
subscriptioncmds.c File Reference
Include dependency graph for subscriptioncmds.c:

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Functions

static Listfetch_table_list (WalReceiverConn *wrconn, List *publications)
 
static void parse_subscription_options (List *options, bool *connect, bool *enabled_given, bool *enabled, bool *create_slot, bool *slot_name_given, char **slot_name, bool *copy_data, char **synchronous_commit, bool *refresh)
 
static Datum publicationListToArray (List *publist)
 
ObjectAddress CreateSubscription (CreateSubscriptionStmt *stmt, bool isTopLevel)
 
static void AlterSubscription_refresh (Subscription *sub, bool copy_data)
 
ObjectAddress AlterSubscription (AlterSubscriptionStmt *stmt)
 
void DropSubscription (DropSubscriptionStmt *stmt, bool isTopLevel)
 
static void AlterSubscriptionOwner_internal (Relation rel, HeapTuple tup, Oid newOwnerId)
 
ObjectAddress AlterSubscriptionOwner (const char *name, Oid newOwnerId)
 
void AlterSubscriptionOwner_oid (Oid subid, Oid newOwnerId)
 

Function Documentation

◆ AlterSubscription()

ObjectAddress AlterSubscription ( AlterSubscriptionStmt stmt)

Definition at line 622 of file subscriptioncmds.c.

References AccessExclusiveLock, aclcheck_error(), ACLCHECK_NOT_OWNER, ALTER_SUBSCRIPTION_CONNECTION, ALTER_SUBSCRIPTION_ENABLED, ALTER_SUBSCRIPTION_OPTIONS, ALTER_SUBSCRIPTION_PUBLICATION, ALTER_SUBSCRIPTION_REFRESH, AlterSubscription_refresh(), ApplyLauncherWakeupAtCommit(), Assert, BoolGetDatum, CatalogTupleUpdate(), AlterSubscriptionStmt::conninfo, CStringGetDatum, CStringGetTextDatum, DirectFunctionCall1, elog, Subscription::enabled, ereport, errcode(), errhint(), errmsg(), ERROR, GETSTRUCT, GetSubscription(), GetUserId(), heap_freetuple(), heap_modify_tuple(), HeapTupleIsValid, InvokeObjectPostAlterHook, AlterSubscriptionStmt::kind, load_file(), LockSharedObject(), MyDatabaseId, namein(), OBJECT_SUBSCRIPTION, ObjectAddressSet, AlterSubscriptionStmt::options, parse_subscription_options(), pg_subscription_ownercheck(), AlterSubscriptionStmt::publication, publicationListToArray(), Subscription::publications, RelationGetDescr, RowExclusiveLock, SearchSysCacheCopy2, Subscription::slotname, AlterSubscriptionStmt::subname, SUBSCRIPTIONNAME, synchronous_commit, HeapTupleData::t_self, table_close(), table_open(), values, and walrcv_check_conninfo.

Referenced by ProcessUtilitySlow().

623 {
624  Relation rel;
625  ObjectAddress myself;
626  bool nulls[Natts_pg_subscription];
627  bool replaces[Natts_pg_subscription];
628  Datum values[Natts_pg_subscription];
629  HeapTuple tup;
630  Oid subid;
631  bool update_tuple = false;
632  Subscription *sub;
634 
635  rel = table_open(SubscriptionRelationId, RowExclusiveLock);
636 
637  /* Fetch the existing tuple. */
639  CStringGetDatum(stmt->subname));
640 
641  if (!HeapTupleIsValid(tup))
642  ereport(ERROR,
643  (errcode(ERRCODE_UNDEFINED_OBJECT),
644  errmsg("subscription \"%s\" does not exist",
645  stmt->subname)));
646 
647  form = (Form_pg_subscription) GETSTRUCT(tup);
648  subid = form->oid;
649 
650  /* must be owner */
651  if (!pg_subscription_ownercheck(subid, GetUserId()))
653  stmt->subname);
654 
655  sub = GetSubscription(subid, false);
656 
657  /* Lock the subscription so nobody else can do anything with it. */
658  LockSharedObject(SubscriptionRelationId, subid, 0, AccessExclusiveLock);
659 
660  /* Form a new tuple. */
661  memset(values, 0, sizeof(values));
662  memset(nulls, false, sizeof(nulls));
663  memset(replaces, false, sizeof(replaces));
664 
665  switch (stmt->kind)
666  {
668  {
669  char *slotname;
670  bool slotname_given;
671  char *synchronous_commit;
672 
673  parse_subscription_options(stmt->options, NULL, NULL, NULL,
674  NULL, &slotname_given, &slotname,
675  NULL, &synchronous_commit, NULL);
676 
677  if (slotname_given)
678  {
679  if (sub->enabled && !slotname)
680  ereport(ERROR,
681  (errcode(ERRCODE_SYNTAX_ERROR),
682  errmsg("cannot set %s for enabled subscription",
683  "slot_name = NONE")));
684 
685  if (slotname)
686  values[Anum_pg_subscription_subslotname - 1] =
688  else
689  nulls[Anum_pg_subscription_subslotname - 1] = true;
690  replaces[Anum_pg_subscription_subslotname - 1] = true;
691  }
692 
693  if (synchronous_commit)
694  {
695  values[Anum_pg_subscription_subsynccommit - 1] =
696  CStringGetTextDatum(synchronous_commit);
697  replaces[Anum_pg_subscription_subsynccommit - 1] = true;
698  }
699 
700  update_tuple = true;
701  break;
702  }
703 
705  {
706  bool enabled,
707  enabled_given;
708 
710  &enabled_given, &enabled, NULL,
711  NULL, NULL, NULL, NULL, NULL);
712  Assert(enabled_given);
713 
714  if (!sub->slotname && enabled)
715  ereport(ERROR,
716  (errcode(ERRCODE_SYNTAX_ERROR),
717  errmsg("cannot enable subscription that does not have a slot name")));
718 
719  values[Anum_pg_subscription_subenabled - 1] =
720  BoolGetDatum(enabled);
721  replaces[Anum_pg_subscription_subenabled - 1] = true;
722 
723  if (enabled)
725 
726  update_tuple = true;
727  break;
728  }
729 
731  /* Load the library providing us libpq calls. */
732  load_file("libpqwalreceiver", false);
733  /* Check the connection info string. */
735 
736  values[Anum_pg_subscription_subconninfo - 1] =
738  replaces[Anum_pg_subscription_subconninfo - 1] = true;
739  update_tuple = true;
740  break;
741 
743  {
744  bool copy_data;
745  bool refresh;
746 
747  parse_subscription_options(stmt->options, NULL, NULL, NULL,
748  NULL, NULL, NULL, &copy_data,
749  NULL, &refresh);
750 
751  values[Anum_pg_subscription_subpublications - 1] =
753  replaces[Anum_pg_subscription_subpublications - 1] = true;
754 
755  update_tuple = true;
756 
757  /* Refresh if user asked us to. */
758  if (refresh)
759  {
760  if (!sub->enabled)
761  ereport(ERROR,
762  (errcode(ERRCODE_SYNTAX_ERROR),
763  errmsg("ALTER SUBSCRIPTION with refresh is not allowed for disabled subscriptions"),
764  errhint("Use ALTER SUBSCRIPTION ... SET PUBLICATION ... WITH (refresh = false).")));
765 
766  /* Make sure refresh sees the new list of publications. */
767  sub->publications = stmt->publication;
768 
769  AlterSubscription_refresh(sub, copy_data);
770  }
771 
772  break;
773  }
774 
776  {
777  bool copy_data;
778 
779  if (!sub->enabled)
780  ereport(ERROR,
781  (errcode(ERRCODE_SYNTAX_ERROR),
782  errmsg("ALTER SUBSCRIPTION ... REFRESH is not allowed for disabled subscriptions")));
783 
784  parse_subscription_options(stmt->options, NULL, NULL, NULL,
785  NULL, NULL, NULL, &copy_data,
786  NULL, NULL);
787 
788  AlterSubscription_refresh(sub, copy_data);
789 
790  break;
791  }
792 
793  default:
794  elog(ERROR, "unrecognized ALTER SUBSCRIPTION kind %d",
795  stmt->kind);
796  }
797 
798  /* Update the catalog if needed. */
799  if (update_tuple)
800  {
801  tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,
802  replaces);
803 
804  CatalogTupleUpdate(rel, &tup->t_self, tup);
805 
806  heap_freetuple(tup);
807  }
808 
810 
811  ObjectAddressSet(myself, SubscriptionRelationId, subid);
812 
813  InvokeObjectPostAlterHook(SubscriptionRelationId, subid, 0);
814 
815  return myself;
816 }
Datum namein(PG_FUNCTION_ARGS)
Definition: name.c:48
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
int errhint(const char *fmt,...)
Definition: elog.c:1071
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
#define RelationGetDescr(relation)
Definition: rel.h:482
Oid GetUserId(void)
Definition: miscinit.c:448
#define walrcv_check_conninfo(conninfo)
Definition: walreceiver.h:274
int errcode(int sqlerrcode)
Definition: elog.c:610
static Datum publicationListToArray(List *publist)
#define DirectFunctionCall1(func, arg1)
Definition: fmgr.h:624
FormData_pg_subscription * Form_pg_subscription
void heap_freetuple(HeapTuple htup)
Definition: heaptuple.c:1338
unsigned int Oid
Definition: postgres_ext.h:31
Subscription * GetSubscription(Oid subid, bool missing_ok)
void aclcheck_error(AclResult aclerr, ObjectType objtype, const char *objectname)
Definition: aclchk.c:3327
#define ERROR
Definition: elog.h:43
ItemPointerData t_self
Definition: htup.h:65
AlterSubscriptionType kind
Definition: parsenodes.h:3558
#define RowExclusiveLock
Definition: lockdefs.h:38
#define CStringGetDatum(X)
Definition: postgres.h:578
List * publications
int synchronous_commit
Definition: xact.c:83
#define InvokeObjectPostAlterHook(classId, objectId, subId)
Definition: objectaccess.h:175
uintptr_t Datum
Definition: postgres.h:367
Oid MyDatabaseId
Definition: globals.c:85
void LockSharedObject(Oid classid, Oid objid, uint16 objsubid, LOCKMODE lockmode)
Definition: lmgr.c:1002
#define BoolGetDatum(X)
Definition: postgres.h:402
#define ereport(elevel,...)
Definition: elog.h:144
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
#define Assert(condition)
Definition: c.h:738
void load_file(const char *filename, bool restricted)
Definition: dfmgr.c:146
void CatalogTupleUpdate(Relation heapRel, ItemPointer otid, HeapTuple tup)
Definition: indexing.c:224
#define ObjectAddressSet(addr, class_id, object_id)
Definition: objectaddress.h:40
static Datum values[MAXATTR]
Definition: bootstrap.c:167
#define AccessExclusiveLock
Definition: lockdefs.h:45
int errmsg(const char *fmt,...)
Definition: elog.c:824
#define elog(elevel,...)
Definition: elog.h:214
#define CStringGetTextDatum(s)
Definition: builtins.h:87
void ApplyLauncherWakeupAtCommit(void)
Definition: launcher.c:929
#define SearchSysCacheCopy2(cacheId, key1, key2)
Definition: syscache.h:176
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:39
HeapTuple heap_modify_tuple(HeapTuple tuple, TupleDesc tupleDesc, Datum *replValues, bool *replIsnull, bool *doReplace)
Definition: heaptuple.c:1113
static void parse_subscription_options(List *options, bool *connect, bool *enabled_given, bool *enabled, bool *create_slot, bool *slot_name_given, char **slot_name, bool *copy_data, char **synchronous_commit, bool *refresh)
static void AlterSubscription_refresh(Subscription *sub, bool copy_data)
bool pg_subscription_ownercheck(Oid sub_oid, Oid roleid)
Definition: aclchk.c:5284

◆ AlterSubscription_refresh()

static void AlterSubscription_refresh ( Subscription sub,
bool  copy_data 
)
static

Definition at line 513 of file subscriptioncmds.c.

References AccessShareLock, AddSubscriptionRelState(), CheckSubscriptionRelkind(), Subscription::conninfo, DEBUG1, ereport, errmsg(), ERROR, fetch_table_list(), get_namespace_name(), get_rel_name(), get_rel_namespace(), get_rel_relkind(), GetSubscriptionRelations(), InvalidXLogRecPtr, lfirst, list_length(), load_file(), logicalrep_worker_stop_at_commit(), Subscription::name, Subscription::oid, oid_cmp(), palloc(), Subscription::publications, qsort, RangeVarGetRelid, SubscriptionRelState::relid, RangeVar::relname, RemoveSubscriptionRel(), RangeVar::schemaname, walrcv_connect, walrcv_disconnect, and wrconn.

Referenced by AlterSubscription().

514 {
515  char *err;
516  List *pubrel_names;
517  List *subrel_states;
518  Oid *subrel_local_oids;
519  Oid *pubrel_local_oids;
520  ListCell *lc;
521  int off;
522 
523  /* Load the library providing us libpq calls. */
524  load_file("libpqwalreceiver", false);
525 
526  /* Try to connect to the publisher. */
527  wrconn = walrcv_connect(sub->conninfo, true, sub->name, &err);
528  if (!wrconn)
529  ereport(ERROR,
530  (errmsg("could not connect to the publisher: %s", err)));
531 
532  /* Get the table list from publisher. */
533  pubrel_names = fetch_table_list(wrconn, sub->publications);
534 
535  /* We are done with the remote side, close connection. */
537 
538  /* Get local table list. */
539  subrel_states = GetSubscriptionRelations(sub->oid);
540 
541  /*
542  * Build qsorted array of local table oids for faster lookup. This can
543  * potentially contain all tables in the database so speed of lookup is
544  * important.
545  */
546  subrel_local_oids = palloc(list_length(subrel_states) * sizeof(Oid));
547  off = 0;
548  foreach(lc, subrel_states)
549  {
551 
552  subrel_local_oids[off++] = relstate->relid;
553  }
554  qsort(subrel_local_oids, list_length(subrel_states),
555  sizeof(Oid), oid_cmp);
556 
557  /*
558  * Walk over the remote tables and try to match them to locally known
559  * tables. If the table is not known locally create a new state for it.
560  *
561  * Also builds array of local oids of remote tables for the next step.
562  */
563  off = 0;
564  pubrel_local_oids = palloc(list_length(pubrel_names) * sizeof(Oid));
565 
566  foreach(lc, pubrel_names)
567  {
568  RangeVar *rv = (RangeVar *) lfirst(lc);
569  Oid relid;
570 
571  relid = RangeVarGetRelid(rv, AccessShareLock, false);
572 
573  /* Check for supported relkind. */
575  rv->schemaname, rv->relname);
576 
577  pubrel_local_oids[off++] = relid;
578 
579  if (!bsearch(&relid, subrel_local_oids,
580  list_length(subrel_states), sizeof(Oid), oid_cmp))
581  {
582  AddSubscriptionRelState(sub->oid, relid,
583  copy_data ? SUBREL_STATE_INIT : SUBREL_STATE_READY,
585  ereport(DEBUG1,
586  (errmsg("table \"%s.%s\" added to subscription \"%s\"",
587  rv->schemaname, rv->relname, sub->name)));
588  }
589  }
590 
591  /*
592  * Next remove state for tables we should not care about anymore using the
593  * data we collected above
594  */
595  qsort(pubrel_local_oids, list_length(pubrel_names),
596  sizeof(Oid), oid_cmp);
597 
598  for (off = 0; off < list_length(subrel_states); off++)
599  {
600  Oid relid = subrel_local_oids[off];
601 
602  if (!bsearch(&relid, pubrel_local_oids,
603  list_length(pubrel_names), sizeof(Oid), oid_cmp))
604  {
605  RemoveSubscriptionRel(sub->oid, relid);
606 
608 
609  ereport(DEBUG1,
610  (errmsg("table \"%s.%s\" removed from subscription \"%s\"",
612  get_rel_name(relid),
613  sub->name)));
614  }
615  }
616 }
static List * fetch_table_list(WalReceiverConn *wrconn, List *publications)
WalReceiverConn * wrconn
Definition: worker.c:105
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
#define DEBUG1
Definition: elog.h:25
void RemoveSubscriptionRel(Oid subid, Oid relid)
#define RangeVarGetRelid(relation, lockmode, missing_ok)
Definition: namespace.h:78
char get_rel_relkind(Oid relid)
Definition: lsyscache.c:1915
Oid get_rel_namespace(Oid relid)
Definition: lsyscache.c:1864
#define AccessShareLock
Definition: lockdefs.h:36
unsigned int Oid
Definition: postgres_ext.h:31
char * schemaname
Definition: primnodes.h:67
char * relname
Definition: primnodes.h:68
#define ERROR
Definition: elog.h:43
void AddSubscriptionRelState(Oid subid, Oid relid, char state, XLogRecPtr sublsn)
char * get_namespace_name(Oid nspid)
Definition: lsyscache.c:3191
List * GetSubscriptionRelations(Oid subid)
List * publications
void CheckSubscriptionRelkind(char relkind, const char *nspname, const char *relname)
#define ereport(elevel,...)
Definition: elog.h:144
#define lfirst(lc)
Definition: pg_list.h:190
void load_file(const char *filename, bool restricted)
Definition: dfmgr.c:146
int oid_cmp(const void *p1, const void *p2)
Definition: oid.c:336
static int list_length(const List *l)
Definition: pg_list.h:169
#define walrcv_disconnect(conn)
Definition: walreceiver.h:300
void * palloc(Size size)
Definition: mcxt.c:949
int errmsg(const char *fmt,...)
Definition: elog.c:824
void logicalrep_worker_stop_at_commit(Oid subid, Oid relid)
Definition: launcher.c:549
#define qsort(a, b, c, d)
Definition: port.h:479
Definition: pg_list.h:50
char * get_rel_name(Oid relid)
Definition: lsyscache.c:1840
#define walrcv_connect(conninfo, logical, appname, err)
Definition: walreceiver.h:272

◆ AlterSubscriptionOwner()

ObjectAddress AlterSubscriptionOwner ( const char *  name,
Oid  newOwnerId 
)

Definition at line 1064 of file subscriptioncmds.c.

References AlterSubscriptionOwner_internal(), CStringGetDatum, ereport, errcode(), errmsg(), ERROR, GETSTRUCT, heap_freetuple(), HeapTupleIsValid, MyDatabaseId, ObjectAddressSet, RowExclusiveLock, SearchSysCacheCopy2, SUBSCRIPTIONNAME, table_close(), and table_open().

Referenced by ExecAlterOwnerStmt().

1065 {
1066  Oid subid;
1067  HeapTuple tup;
1068  Relation rel;
1069  ObjectAddress address;
1070  Form_pg_subscription form;
1071 
1072  rel = table_open(SubscriptionRelationId, RowExclusiveLock);
1073 
1076 
1077  if (!HeapTupleIsValid(tup))
1078  ereport(ERROR,
1079  (errcode(ERRCODE_UNDEFINED_OBJECT),
1080  errmsg("subscription \"%s\" does not exist", name)));
1081 
1082  form = (Form_pg_subscription) GETSTRUCT(tup);
1083  subid = form->oid;
1084 
1085  AlterSubscriptionOwner_internal(rel, tup, newOwnerId);
1086 
1087  ObjectAddressSet(address, SubscriptionRelationId, subid);
1088 
1089  heap_freetuple(tup);
1090 
1092 
1093  return address;
1094 }
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
int errcode(int sqlerrcode)
Definition: elog.c:610
FormData_pg_subscription * Form_pg_subscription
void heap_freetuple(HeapTuple htup)
Definition: heaptuple.c:1338
unsigned int Oid
Definition: postgres_ext.h:31
#define ERROR
Definition: elog.h:43
#define RowExclusiveLock
Definition: lockdefs.h:38
#define CStringGetDatum(X)
Definition: postgres.h:578
Oid MyDatabaseId
Definition: globals.c:85
#define ereport(elevel,...)
Definition: elog.h:144
static void AlterSubscriptionOwner_internal(Relation rel, HeapTuple tup, Oid newOwnerId)
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
const char * name
Definition: encode.c:555
#define ObjectAddressSet(addr, class_id, object_id)
Definition: objectaddress.h:40
int errmsg(const char *fmt,...)
Definition: elog.c:824
#define SearchSysCacheCopy2(cacheId, key1, key2)
Definition: syscache.h:176
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:39

◆ AlterSubscriptionOwner_internal()

static void AlterSubscriptionOwner_internal ( Relation  rel,
HeapTuple  tup,
Oid  newOwnerId 
)
static

Definition at line 1027 of file subscriptioncmds.c.

References aclcheck_error(), ACLCHECK_NOT_OWNER, CatalogTupleUpdate(), changeDependencyOnOwner(), ereport, errcode(), errhint(), errmsg(), ERROR, GETSTRUCT, GetUserId(), InvokeObjectPostAlterHook, NameStr, OBJECT_SUBSCRIPTION, pg_subscription_ownercheck(), superuser_arg(), and HeapTupleData::t_self.

Referenced by AlterSubscriptionOwner(), and AlterSubscriptionOwner_oid().

1028 {
1029  Form_pg_subscription form;
1030 
1031  form = (Form_pg_subscription) GETSTRUCT(tup);
1032 
1033  if (form->subowner == newOwnerId)
1034  return;
1035 
1036  if (!pg_subscription_ownercheck(form->oid, GetUserId()))
1038  NameStr(form->subname));
1039 
1040  /* New owner must be a superuser */
1041  if (!superuser_arg(newOwnerId))
1042  ereport(ERROR,
1043  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1044  errmsg("permission denied to change owner of subscription \"%s\"",
1045  NameStr(form->subname)),
1046  errhint("The owner of a subscription must be a superuser.")));
1047 
1048  form->subowner = newOwnerId;
1049  CatalogTupleUpdate(rel, &tup->t_self, tup);
1050 
1051  /* Update owner dependency reference */
1052  changeDependencyOnOwner(SubscriptionRelationId,
1053  form->oid,
1054  newOwnerId);
1055 
1056  InvokeObjectPostAlterHook(SubscriptionRelationId,
1057  form->oid, 0);
1058 }
int errhint(const char *fmt,...)
Definition: elog.c:1071
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
Oid GetUserId(void)
Definition: miscinit.c:448
int errcode(int sqlerrcode)
Definition: elog.c:610
FormData_pg_subscription * Form_pg_subscription
void changeDependencyOnOwner(Oid classId, Oid objectId, Oid newOwnerId)
Definition: pg_shdepend.c:309
void aclcheck_error(AclResult aclerr, ObjectType objtype, const char *objectname)
Definition: aclchk.c:3327
#define ERROR
Definition: elog.h:43
ItemPointerData t_self
Definition: htup.h:65
#define InvokeObjectPostAlterHook(classId, objectId, subId)
Definition: objectaccess.h:175
bool superuser_arg(Oid roleid)
Definition: superuser.c:56
#define ereport(elevel,...)
Definition: elog.h:144
void CatalogTupleUpdate(Relation heapRel, ItemPointer otid, HeapTuple tup)
Definition: indexing.c:224
int errmsg(const char *fmt,...)
Definition: elog.c:824
#define NameStr(name)
Definition: c.h:615
bool pg_subscription_ownercheck(Oid sub_oid, Oid roleid)
Definition: aclchk.c:5284

◆ AlterSubscriptionOwner_oid()

void AlterSubscriptionOwner_oid ( Oid  subid,
Oid  newOwnerId 
)

Definition at line 1100 of file subscriptioncmds.c.

References AlterSubscriptionOwner_internal(), ereport, errcode(), errmsg(), ERROR, heap_freetuple(), HeapTupleIsValid, ObjectIdGetDatum, RowExclusiveLock, SearchSysCacheCopy1, SUBSCRIPTIONOID, table_close(), and table_open().

Referenced by shdepReassignOwned().

1101 {
1102  HeapTuple tup;
1103  Relation rel;
1104 
1105  rel = table_open(SubscriptionRelationId, RowExclusiveLock);
1106 
1108 
1109  if (!HeapTupleIsValid(tup))
1110  ereport(ERROR,
1111  (errcode(ERRCODE_UNDEFINED_OBJECT),
1112  errmsg("subscription with OID %u does not exist", subid)));
1113 
1114  AlterSubscriptionOwner_internal(rel, tup, newOwnerId);
1115 
1116  heap_freetuple(tup);
1117 
1119 }
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
int errcode(int sqlerrcode)
Definition: elog.c:610
void heap_freetuple(HeapTuple htup)
Definition: heaptuple.c:1338
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
#define RowExclusiveLock
Definition: lockdefs.h:38
#define ereport(elevel,...)
Definition: elog.h:144
static void AlterSubscriptionOwner_internal(Relation rel, HeapTuple tup, Oid newOwnerId)
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
#define SearchSysCacheCopy1(cacheId, key1)
Definition: syscache.h:174
int errmsg(const char *fmt,...)
Definition: elog.c:824
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:39

◆ CreateSubscription()

ObjectAddress CreateSubscription ( CreateSubscriptionStmt stmt,
bool  isTopLevel 
)

Definition at line 308 of file subscriptioncmds.c.

References AccessShareLock, AddSubscriptionRelState(), ApplyLauncherWakeupAtCommit(), Assert, BoolGetDatum, CatalogTupleInsert(), CheckSubscriptionRelkind(), connect, CreateSubscriptionStmt::conninfo, create_slot, CRS_NOEXPORT_SNAPSHOT, CStringGetDatum, CStringGetTextDatum, DirectFunctionCall1, elog, ereport, errcode(), ERRCODE_DUPLICATE_OBJECT, errmsg(), ERROR, fetch_table_list(), get_rel_relkind(), GetNewOidWithIndex(), GetSysCacheOid2, GetUserId(), heap_form_tuple(), heap_freetuple(), InvalidXLogRecPtr, InvokeObjectPostCreateHook, lfirst, load_file(), MyDatabaseId, NAMEDATALEN, namein(), NOTICE, ObjectAddressSet, ObjectIdGetDatum, OidIsValid, CreateSubscriptionStmt::options, parse_subscription_options(), PG_END_TRY, PG_FINALLY, PG_TRY, PreventInTransactionBlock(), CreateSubscriptionStmt::publication, publicationListToArray(), RangeVarGetRelid, recordDependencyOnOwner(), RelationGetDescr, RangeVar::relname, replorigin_create(), RowExclusiveLock, RangeVar::schemaname, snprintf, CreateSubscriptionStmt::subname, SUBSCRIPTIONNAME, SubscriptionObjectIndexId, superuser(), synchronous_commit, table_close(), table_open(), values, walrcv_check_conninfo, walrcv_connect, walrcv_create_slot, walrcv_disconnect, WARNING, and wrconn.

Referenced by ProcessUtilitySlow().

309 {
310  Relation rel;
311  ObjectAddress myself;
312  Oid subid;
313  bool nulls[Natts_pg_subscription];
314  Datum values[Natts_pg_subscription];
315  Oid owner = GetUserId();
316  HeapTuple tup;
317  bool connect;
318  bool enabled_given;
319  bool enabled;
320  bool copy_data;
321  char *synchronous_commit;
322  char *conninfo;
323  char *slotname;
324  bool slotname_given;
325  char originname[NAMEDATALEN];
326  bool create_slot;
327  List *publications;
328 
329  /*
330  * Parse and check options.
331  *
332  * Connection and publication should not be specified here.
333  */
334  parse_subscription_options(stmt->options, &connect, &enabled_given,
335  &enabled, &create_slot, &slotname_given,
336  &slotname, &copy_data, &synchronous_commit,
337  NULL);
338 
339  /*
340  * Since creating a replication slot is not transactional, rolling back
341  * the transaction leaves the created replication slot. So we cannot run
342  * CREATE SUBSCRIPTION inside a transaction block if creating a
343  * replication slot.
344  */
345  if (create_slot)
346  PreventInTransactionBlock(isTopLevel, "CREATE SUBSCRIPTION ... WITH (create_slot = true)");
347 
348  if (!superuser())
349  ereport(ERROR,
350  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
351  errmsg("must be superuser to create subscriptions")));
352 
353  /*
354  * If built with appropriate switch, whine when regression-testing
355  * conventions for subscription names are violated.
356  */
357 #ifdef ENFORCE_REGRESSION_TEST_NAME_RESTRICTIONS
358  if (strncmp(stmt->subname, "regress_", 8) != 0)
359  elog(WARNING, "subscriptions created by regression test cases should have names starting with \"regress_\"");
360 #endif
361 
362  rel = table_open(SubscriptionRelationId, RowExclusiveLock);
363 
364  /* Check if name is used */
365  subid = GetSysCacheOid2(SUBSCRIPTIONNAME, Anum_pg_subscription_oid,
367  if (OidIsValid(subid))
368  {
369  ereport(ERROR,
371  errmsg("subscription \"%s\" already exists",
372  stmt->subname)));
373  }
374 
375  if (!slotname_given && slotname == NULL)
376  slotname = stmt->subname;
377 
378  /* The default for synchronous_commit of subscriptions is off. */
379  if (synchronous_commit == NULL)
380  synchronous_commit = "off";
381 
382  conninfo = stmt->conninfo;
383  publications = stmt->publication;
384 
385  /* Load the library providing us libpq calls. */
386  load_file("libpqwalreceiver", false);
387 
388  /* Check the connection info string. */
389  walrcv_check_conninfo(conninfo);
390 
391  /* Everything ok, form a new tuple. */
392  memset(values, 0, sizeof(values));
393  memset(nulls, false, sizeof(nulls));
394 
396  Anum_pg_subscription_oid);
397  values[Anum_pg_subscription_oid - 1] = ObjectIdGetDatum(subid);
398  values[Anum_pg_subscription_subdbid - 1] = ObjectIdGetDatum(MyDatabaseId);
399  values[Anum_pg_subscription_subname - 1] =
401  values[Anum_pg_subscription_subowner - 1] = ObjectIdGetDatum(owner);
402  values[Anum_pg_subscription_subenabled - 1] = BoolGetDatum(enabled);
403  values[Anum_pg_subscription_subconninfo - 1] =
404  CStringGetTextDatum(conninfo);
405  if (slotname)
406  values[Anum_pg_subscription_subslotname - 1] =
408  else
409  nulls[Anum_pg_subscription_subslotname - 1] = true;
410  values[Anum_pg_subscription_subsynccommit - 1] =
411  CStringGetTextDatum(synchronous_commit);
412  values[Anum_pg_subscription_subpublications - 1] =
413  publicationListToArray(publications);
414 
415  tup = heap_form_tuple(RelationGetDescr(rel), values, nulls);
416 
417  /* Insert tuple into catalog. */
418  CatalogTupleInsert(rel, tup);
419  heap_freetuple(tup);
420 
421  recordDependencyOnOwner(SubscriptionRelationId, subid, owner);
422 
423  snprintf(originname, sizeof(originname), "pg_%u", subid);
424  replorigin_create(originname);
425 
426  /*
427  * Connect to remote side to execute requested commands and fetch table
428  * info.
429  */
430  if (connect)
431  {
432  char *err;
434  List *tables;
435  ListCell *lc;
436  char table_state;
437 
438  /* Try to connect to the publisher. */
439  wrconn = walrcv_connect(conninfo, true, stmt->subname, &err);
440  if (!wrconn)
441  ereport(ERROR,
442  (errmsg("could not connect to the publisher: %s", err)));
443 
444  PG_TRY();
445  {
446  /*
447  * Set sync state based on if we were asked to do data copy or
448  * not.
449  */
450  table_state = copy_data ? SUBREL_STATE_INIT : SUBREL_STATE_READY;
451 
452  /*
453  * Get the table list from publisher and build local table status
454  * info.
455  */
456  tables = fetch_table_list(wrconn, publications);
457  foreach(lc, tables)
458  {
459  RangeVar *rv = (RangeVar *) lfirst(lc);
460  Oid relid;
461 
462  relid = RangeVarGetRelid(rv, AccessShareLock, false);
463 
464  /* Check for supported relkind. */
466  rv->schemaname, rv->relname);
467 
468  AddSubscriptionRelState(subid, relid, table_state,
470  }
471 
472  /*
473  * If requested, create permanent slot for the subscription. We
474  * won't use the initial snapshot for anything, so no need to
475  * export it.
476  */
477  if (create_slot)
478  {
479  Assert(slotname);
480 
481  walrcv_create_slot(wrconn, slotname, false,
482  CRS_NOEXPORT_SNAPSHOT, NULL);
483  ereport(NOTICE,
484  (errmsg("created replication slot \"%s\" on publisher",
485  slotname)));
486  }
487  }
488  PG_FINALLY();
489  {
490  walrcv_disconnect(wrconn);
491  }
492  PG_END_TRY();
493  }
494  else
496  /* translator: %s is an SQL ALTER statement */
497  (errmsg("tables were not subscribed, you will have to run %s to subscribe the tables",
498  "ALTER SUBSCRIPTION ... REFRESH PUBLICATION")));
499 
501 
502  if (enabled)
504 
505  ObjectAddressSet(myself, SubscriptionRelationId, subid);
506 
507  InvokeObjectPostCreateHook(SubscriptionRelationId, subid, 0);
508 
509  return myself;
510 }
static List * fetch_table_list(WalReceiverConn *wrconn, List *publications)
Oid GetNewOidWithIndex(Relation relation, Oid indexId, AttrNumber oidcolumn)
Definition: catalog.c:317
WalReceiverConn * wrconn
Definition: worker.c:105
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
Datum namein(PG_FUNCTION_ARGS)
Definition: name.c:48
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
#define InvokeObjectPostCreateHook(classId, objectId, subId)
Definition: objectaccess.h:151
#define RelationGetDescr(relation)
Definition: rel.h:482
Oid GetUserId(void)
Definition: miscinit.c:448
#define RangeVarGetRelid(relation, lockmode, missing_ok)
Definition: namespace.h:78
#define walrcv_check_conninfo(conninfo)
Definition: walreceiver.h:274
char get_rel_relkind(Oid relid)
Definition: lsyscache.c:1915
#define AccessShareLock
Definition: lockdefs.h:36
static bool create_slot
int errcode(int sqlerrcode)
Definition: elog.c:610
bool superuser(void)
Definition: superuser.c:46
static Datum publicationListToArray(List *publist)
HeapTuple heap_form_tuple(TupleDesc tupleDescriptor, Datum *values, bool *isnull)
Definition: heaptuple.c:1020
#define connect(s, name, namelen)
Definition: win32_port.h:435
#define DirectFunctionCall1(func, arg1)
Definition: fmgr.h:624
void recordDependencyOnOwner(Oid classId, Oid objectId, Oid owner)
Definition: pg_shdepend.c:164
void heap_freetuple(HeapTuple htup)
Definition: heaptuple.c:1338
unsigned int Oid
Definition: postgres_ext.h:31
#define walrcv_create_slot(conn, slotname, temporary, snapshot_action, lsn)
Definition: walreceiver.h:294
#define OidIsValid(objectId)
Definition: c.h:644
char * schemaname
Definition: primnodes.h:67
#define NAMEDATALEN
char * relname
Definition: primnodes.h:68
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
void AddSubscriptionRelState(Oid subid, Oid relid, char state, XLogRecPtr sublsn)
#define RowExclusiveLock
Definition: lockdefs.h:38
#define CStringGetDatum(X)
Definition: postgres.h:578
void PreventInTransactionBlock(bool isTopLevel, const char *stmtType)
Definition: xact.c:3350
void CheckSubscriptionRelkind(char relkind, const char *nspname, const char *relname)
RepOriginId replorigin_create(char *roname)
Definition: origin.c:245
int synchronous_commit
Definition: xact.c:83
#define WARNING
Definition: elog.h:40
#define PG_FINALLY()
Definition: elog.h:312
uintptr_t Datum
Definition: postgres.h:367
Oid MyDatabaseId
Definition: globals.c:85
#define BoolGetDatum(X)
Definition: postgres.h:402
#define ereport(elevel,...)
Definition: elog.h:144
#define NOTICE
Definition: elog.h:37
#define Assert(condition)
Definition: c.h:738
#define lfirst(lc)
Definition: pg_list.h:190
#define GetSysCacheOid2(cacheId, oidcol, key1, key2)
Definition: syscache.h:194
void load_file(const char *filename, bool restricted)
Definition: dfmgr.c:146
#define walrcv_disconnect(conn)
Definition: walreceiver.h:300
#define ObjectAddressSet(addr, class_id, object_id)
Definition: objectaddress.h:40
static Datum values[MAXATTR]
Definition: bootstrap.c:167
int errmsg(const char *fmt,...)
Definition: elog.c:824
#define elog(elevel,...)
Definition: elog.h:214
#define CStringGetTextDatum(s)
Definition: builtins.h:87
void ApplyLauncherWakeupAtCommit(void)
Definition: launcher.c:929
#define PG_TRY()
Definition: elog.h:295
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:39
#define ERRCODE_DUPLICATE_OBJECT
Definition: streamutil.c:31
Definition: pg_list.h:50
#define snprintf
Definition: port.h:193
void CatalogTupleInsert(Relation heapRel, HeapTuple tup)
Definition: indexing.c:183
static void parse_subscription_options(List *options, bool *connect, bool *enabled_given, bool *enabled, bool *create_slot, bool *slot_name_given, char **slot_name, bool *copy_data, char **synchronous_commit, bool *refresh)
#define PG_END_TRY()
Definition: elog.h:320
#define SubscriptionObjectIndexId
Definition: indexing.h:358
#define walrcv_connect(conninfo, logical, appname, err)
Definition: walreceiver.h:272

◆ DropSubscription()

void DropSubscription ( DropSubscriptionStmt stmt,
bool  isTopLevel 
)

Definition at line 822 of file subscriptioncmds.c.

References AccessExclusiveLock, aclcheck_error(), ACLCHECK_NOT_OWNER, appendStringInfo(), Assert, CatalogTupleDelete(), CStringGetDatum, StringInfoData::data, DatumGetName, deleteSharedDependencyRecordsFor(), ereport, WalRcvExecResult::err, errcode(), errdetail(), errhint(), errmsg(), ERROR, EventTriggerSQLDropAddObject(), GETSTRUCT, GetUserId(), HeapTupleIsValid, initStringInfo(), InvalidOid, InvalidRepOriginId, InvokeObjectDropHook, lfirst, list_free(), load_file(), LockSharedObject(), logicalrep_worker_stop(), logicalrep_workers_find(), LW_SHARED, LWLockAcquire(), LWLockRelease(), DropSubscriptionStmt::missing_ok, MyDatabaseId, NAMEDATALEN, NameStr, NoLock, NOTICE, OBJECT_SUBSCRIPTION, ObjectAddressSet, pfree(), PG_END_TRY, PG_FINALLY, pg_subscription_ownercheck(), PG_TRY, PreventInTransactionBlock(), pstrdup(), quote_identifier(), ReleaseSysCache(), LogicalRepWorker::relid, RemoveSubscriptionRel(), replorigin_by_name(), replorigin_drop(), SearchSysCache2(), snprintf, WalRcvExecResult::status, LogicalRepWorker::subid, subname, DropSubscriptionStmt::subname, SUBSCRIPTIONNAME, SUBSCRIPTIONOID, SysCacheGetAttr(), HeapTupleData::t_self, table_close(), table_open(), TextDatumGetCString, walrcv_clear_result(), walrcv_connect, walrcv_disconnect, walrcv_exec, WALRCV_OK_COMMAND, and wrconn.

Referenced by ProcessUtilitySlow().

823 {
824  Relation rel;
825  ObjectAddress myself;
826  HeapTuple tup;
827  Oid subid;
828  Datum datum;
829  bool isnull;
830  char *subname;
831  char *conninfo;
832  char *slotname;
833  List *subworkers;
834  ListCell *lc;
835  char originname[NAMEDATALEN];
836  char *err = NULL;
837  RepOriginId originid;
838  WalReceiverConn *wrconn = NULL;
839  StringInfoData cmd;
841 
842  /*
843  * Lock pg_subscription with AccessExclusiveLock to ensure that the
844  * launcher doesn't restart new worker during dropping the subscription
845  */
846  rel = table_open(SubscriptionRelationId, AccessExclusiveLock);
847 
849  CStringGetDatum(stmt->subname));
850 
851  if (!HeapTupleIsValid(tup))
852  {
853  table_close(rel, NoLock);
854 
855  if (!stmt->missing_ok)
856  ereport(ERROR,
857  (errcode(ERRCODE_UNDEFINED_OBJECT),
858  errmsg("subscription \"%s\" does not exist",
859  stmt->subname)));
860  else
861  ereport(NOTICE,
862  (errmsg("subscription \"%s\" does not exist, skipping",
863  stmt->subname)));
864 
865  return;
866  }
867 
868  form = (Form_pg_subscription) GETSTRUCT(tup);
869  subid = form->oid;
870 
871  /* must be owner */
872  if (!pg_subscription_ownercheck(subid, GetUserId()))
874  stmt->subname);
875 
876  /* DROP hook for the subscription being removed */
877  InvokeObjectDropHook(SubscriptionRelationId, subid, 0);
878 
879  /*
880  * Lock the subscription so nobody else can do anything with it (including
881  * the replication workers).
882  */
883  LockSharedObject(SubscriptionRelationId, subid, 0, AccessExclusiveLock);
884 
885  /* Get subname */
886  datum = SysCacheGetAttr(SUBSCRIPTIONOID, tup,
887  Anum_pg_subscription_subname, &isnull);
888  Assert(!isnull);
889  subname = pstrdup(NameStr(*DatumGetName(datum)));
890 
891  /* Get conninfo */
892  datum = SysCacheGetAttr(SUBSCRIPTIONOID, tup,
893  Anum_pg_subscription_subconninfo, &isnull);
894  Assert(!isnull);
895  conninfo = TextDatumGetCString(datum);
896 
897  /* Get slotname */
898  datum = SysCacheGetAttr(SUBSCRIPTIONOID, tup,
899  Anum_pg_subscription_subslotname, &isnull);
900  if (!isnull)
901  slotname = pstrdup(NameStr(*DatumGetName(datum)));
902  else
903  slotname = NULL;
904 
905  /*
906  * Since dropping a replication slot is not transactional, the replication
907  * slot stays dropped even if the transaction rolls back. So we cannot
908  * run DROP SUBSCRIPTION inside a transaction block if dropping the
909  * replication slot.
910  *
911  * XXX The command name should really be something like "DROP SUBSCRIPTION
912  * of a subscription that is associated with a replication slot", but we
913  * don't have the proper facilities for that.
914  */
915  if (slotname)
916  PreventInTransactionBlock(isTopLevel, "DROP SUBSCRIPTION");
917 
918  ObjectAddressSet(myself, SubscriptionRelationId, subid);
919  EventTriggerSQLDropAddObject(&myself, true, true);
920 
921  /* Remove the tuple from catalog. */
922  CatalogTupleDelete(rel, &tup->t_self);
923 
924  ReleaseSysCache(tup);
925 
926  /*
927  * Stop all the subscription workers immediately.
928  *
929  * This is necessary if we are dropping the replication slot, so that the
930  * slot becomes accessible.
931  *
932  * It is also necessary if the subscription is disabled and was disabled
933  * in the same transaction. Then the workers haven't seen the disabling
934  * yet and will still be running, leading to hangs later when we want to
935  * drop the replication origin. If the subscription was disabled before
936  * this transaction, then there shouldn't be any workers left, so this
937  * won't make a difference.
938  *
939  * New workers won't be started because we hold an exclusive lock on the
940  * subscription till the end of the transaction.
941  */
942  LWLockAcquire(LogicalRepWorkerLock, LW_SHARED);
943  subworkers = logicalrep_workers_find(subid, false);
944  LWLockRelease(LogicalRepWorkerLock);
945  foreach(lc, subworkers)
946  {
948 
950  }
951  list_free(subworkers);
952 
953  /* Clean up dependencies */
954  deleteSharedDependencyRecordsFor(SubscriptionRelationId, subid, 0);
955 
956  /* Remove any associated relation synchronization states. */
958 
959  /* Remove the origin tracking if exists. */
960  snprintf(originname, sizeof(originname), "pg_%u", subid);
961  originid = replorigin_by_name(originname, true);
962  if (originid != InvalidRepOriginId)
963  replorigin_drop(originid, false);
964 
965  /*
966  * If there is no slot associated with the subscription, we can finish
967  * here.
968  */
969  if (!slotname)
970  {
971  table_close(rel, NoLock);
972  return;
973  }
974 
975  /*
976  * Otherwise drop the replication slot at the publisher node using the
977  * replication connection.
978  */
979  load_file("libpqwalreceiver", false);
980 
981  initStringInfo(&cmd);
982  appendStringInfo(&cmd, "DROP_REPLICATION_SLOT %s WAIT", quote_identifier(slotname));
983 
984  wrconn = walrcv_connect(conninfo, true, subname, &err);
985  if (wrconn == NULL)
986  ereport(ERROR,
987  (errmsg("could not connect to publisher when attempting to "
988  "drop the replication slot \"%s\"", slotname),
989  errdetail("The error was: %s", err),
990  /* translator: %s is an SQL ALTER command */
991  errhint("Use %s to disassociate the subscription from the slot.",
992  "ALTER SUBSCRIPTION ... SET (slot_name = NONE)")));
993 
994  PG_TRY();
995  {
996  WalRcvExecResult *res;
997 
998  res = walrcv_exec(wrconn, cmd.data, 0, NULL);
999 
1000  if (res->status != WALRCV_OK_COMMAND)
1001  ereport(ERROR,
1002  (errmsg("could not drop the replication slot \"%s\" on publisher",
1003  slotname),
1004  errdetail("The error was: %s", res->err)));
1005  else
1006  ereport(NOTICE,
1007  (errmsg("dropped replication slot \"%s\" on publisher",
1008  slotname)));
1009 
1010  walrcv_clear_result(res);
1011  }
1012  PG_FINALLY();
1013  {
1014  walrcv_disconnect(wrconn);
1015  }
1016  PG_END_TRY();
1017 
1018  pfree(cmd.data);
1019 
1020  table_close(rel, NoLock);
1021 }
WalReceiverConn * wrconn
Definition: worker.c:105
List * logicalrep_workers_find(Oid subid, bool only_running)
Definition: launcher.c:259
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
int errhint(const char *fmt,...)
Definition: elog.c:1071
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
void RemoveSubscriptionRel(Oid subid, Oid relid)
const char * quote_identifier(const char *ident)
Definition: ruleutils.c:10737
Oid GetUserId(void)
Definition: miscinit.c:448
char * pstrdup(const char *in)
Definition: mcxt.c:1186
void replorigin_drop(RepOriginId roident, bool nowait)
Definition: origin.c:337
#define InvokeObjectDropHook(classId, objectId, subId)
Definition: objectaccess.h:160
uint16 RepOriginId
Definition: xlogdefs.h:58
int errcode(int sqlerrcode)
Definition: elog.c:610
void CatalogTupleDelete(Relation heapRel, ItemPointer tid)
Definition: indexing.c:269
FormData_pg_subscription * Form_pg_subscription
unsigned int Oid
Definition: postgres_ext.h:31
NameData subname
RepOriginId replorigin_by_name(char *roname, bool missing_ok)
Definition: origin.c:214
void LWLockRelease(LWLock *lock)
Definition: lwlock.c:1812
#define NAMEDATALEN
#define DatumGetName(X)
Definition: postgres.h:585
void aclcheck_error(AclResult aclerr, ObjectType objtype, const char *objectname)
Definition: aclchk.c:3327
static void walrcv_clear_result(WalRcvExecResult *walres)
Definition: walreceiver.h:304
void pfree(void *pointer)
Definition: mcxt.c:1056
void appendStringInfo(StringInfo str, const char *fmt,...)
Definition: stringinfo.c:91
#define ERROR
Definition: elog.h:43
ItemPointerData t_self
Definition: htup.h:65
#define NoLock
Definition: lockdefs.h:34
void logicalrep_worker_stop(Oid subid, Oid relid)
Definition: launcher.c:452
int errdetail(const char *fmt,...)
Definition: elog.c:957
#define CStringGetDatum(X)
Definition: postgres.h:578
void PreventInTransactionBlock(bool isTopLevel, const char *stmtType)
Definition: xact.c:3350
void deleteSharedDependencyRecordsFor(Oid classId, Oid objectId, int32 objectSubId)
Definition: pg_shdepend.c:907
void initStringInfo(StringInfo str)
Definition: stringinfo.c:59
#define PG_FINALLY()
Definition: elog.h:312
#define TextDatumGetCString(d)
Definition: builtins.h:88
uintptr_t Datum
Definition: postgres.h:367
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1164
Datum SysCacheGetAttr(int cacheId, HeapTuple tup, AttrNumber attributeNumber, bool *isNull)
Definition: syscache.c:1377
Oid MyDatabaseId
Definition: globals.c:85
void LockSharedObject(Oid classid, Oid objid, uint16 objsubid, LOCKMODE lockmode)
Definition: lmgr.c:1002
#define InvalidOid
Definition: postgres_ext.h:36
#define ereport(elevel,...)
Definition: elog.h:144
#define NOTICE
Definition: elog.h:37
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
#define Assert(condition)
Definition: c.h:738
#define lfirst(lc)
Definition: pg_list.h:190
WalRcvExecStatus status
Definition: walreceiver.h:210
void load_file(const char *filename, bool restricted)
Definition: dfmgr.c:146
void EventTriggerSQLDropAddObject(const ObjectAddress *object, bool original, bool normal)
HeapTuple SearchSysCache2(int cacheId, Datum key1, Datum key2)
Definition: syscache.c:1127
bool LWLockAcquire(LWLock *lock, LWLockMode mode)
Definition: lwlock.c:1208
#define walrcv_disconnect(conn)
Definition: walreceiver.h:300
#define InvalidRepOriginId
Definition: origin.h:33
#define ObjectAddressSet(addr, class_id, object_id)
Definition: objectaddress.h:40
#define AccessExclusiveLock
Definition: lockdefs.h:45
int errmsg(const char *fmt,...)
Definition: elog.c:824
void list_free(List *list)
Definition: list.c:1376
#define NameStr(name)
Definition: c.h:615
#define PG_TRY()
Definition: elog.h:295
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:39
Definition: pg_list.h:50
#define snprintf
Definition: port.h:193
#define PG_END_TRY()
Definition: elog.h:320
#define walrcv_exec(conn, exec, nRetTypes, retTypes)
Definition: walreceiver.h:298
bool pg_subscription_ownercheck(Oid sub_oid, Oid roleid)
Definition: aclchk.c:5284
#define walrcv_connect(conninfo, logical, appname, err)
Definition: walreceiver.h:272

◆ fetch_table_list()

static List * fetch_table_list ( WalReceiverConn wrconn,
List publications 
)
static

Definition at line 1126 of file subscriptioncmds.c.

References appendStringInfoChar(), appendStringInfoString(), Assert, StringInfoData::data, ereport, WalRcvExecResult::err, errmsg(), ERROR, ExecClearTuple(), ExecDropSingleTupleTableSlot(), initStringInfo(), lappend(), lfirst, list_length(), makeRangeVar(), MakeSingleTupleTableSlot(), NIL, pfree(), pstrdup(), quote_literal_cstr(), relname, slot_getattr(), WalRcvExecResult::status, strVal, TextDatumGetCString, TTSOpsMinimalTuple, WalRcvExecResult::tupledesc, WalRcvExecResult::tuplestore, tuplestore_gettupleslot(), walrcv_clear_result(), walrcv_exec, and WALRCV_OK_TUPLES.

Referenced by AlterSubscription_refresh(), and CreateSubscription().

1127 {
1128  WalRcvExecResult *res;
1129  StringInfoData cmd;
1130  TupleTableSlot *slot;
1131  Oid tableRow[2] = {TEXTOID, TEXTOID};
1132  ListCell *lc;
1133  bool first;
1134  List *tablelist = NIL;
1135 
1136  Assert(list_length(publications) > 0);
1137 
1138  initStringInfo(&cmd);
1139  appendStringInfoString(&cmd, "SELECT DISTINCT t.schemaname, t.tablename\n"
1140  " FROM pg_catalog.pg_publication_tables t\n"
1141  " WHERE t.pubname IN (");
1142  first = true;
1143  foreach(lc, publications)
1144  {
1145  char *pubname = strVal(lfirst(lc));
1146 
1147  if (first)
1148  first = false;
1149  else
1150  appendStringInfoString(&cmd, ", ");
1151 
1153  }
1154  appendStringInfoChar(&cmd, ')');
1155 
1156  res = walrcv_exec(wrconn, cmd.data, 2, tableRow);
1157  pfree(cmd.data);
1158 
1159  if (res->status != WALRCV_OK_TUPLES)
1160  ereport(ERROR,
1161  (errmsg("could not receive list of replicated tables from the publisher: %s",
1162  res->err)));
1163 
1164  /* Process tables. */
1166  while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
1167  {
1168  char *nspname;
1169  char *relname;
1170  bool isnull;
1171  RangeVar *rv;
1172 
1173  nspname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
1174  Assert(!isnull);
1175  relname = TextDatumGetCString(slot_getattr(slot, 2, &isnull));
1176  Assert(!isnull);
1177 
1178  rv = makeRangeVar(pstrdup(nspname), pstrdup(relname), -1);
1179  tablelist = lappend(tablelist, rv);
1180 
1181  ExecClearTuple(slot);
1182  }
1184 
1185  walrcv_clear_result(res);
1186 
1187  return tablelist;
1188 }
#define NIL
Definition: pg_list.h:65
char * quote_literal_cstr(const char *rawstr)
Definition: quote.c:102
static TupleTableSlot * ExecClearTuple(TupleTableSlot *slot)
Definition: tuptable.h:425
TupleTableSlot * MakeSingleTupleTableSlot(TupleDesc tupdesc, const TupleTableSlotOps *tts_ops)
Definition: execTuples.c:1208
char * pstrdup(const char *in)
Definition: mcxt.c:1186
#define strVal(v)
Definition: value.h:54
NameData relname
Definition: pg_class.h:38
unsigned int Oid
Definition: postgres_ext.h:31
static void walrcv_clear_result(WalRcvExecResult *walres)
Definition: walreceiver.h:304
void pfree(void *pointer)
Definition: mcxt.c:1056
TupleDesc tupledesc
Definition: walreceiver.h:213
#define ERROR
Definition: elog.h:43
void appendStringInfoString(StringInfo str, const char *s)
Definition: stringinfo.c:176
void ExecDropSingleTupleTableSlot(TupleTableSlot *slot)
Definition: execTuples.c:1224
List * lappend(List *list, void *datum)
Definition: list.c:321
void appendStringInfoChar(StringInfo str, char ch)
Definition: stringinfo.c:188
void initStringInfo(StringInfo str)
Definition: stringinfo.c:59
#define TextDatumGetCString(d)
Definition: builtins.h:88
static Datum slot_getattr(TupleTableSlot *slot, int attnum, bool *isnull)
Definition: tuptable.h:381
#define ereport(elevel,...)
Definition: elog.h:144
bool tuplestore_gettupleslot(Tuplestorestate *state, bool forward, bool copy, TupleTableSlot *slot)
Definition: tuplestore.c:1078
Tuplestorestate * tuplestore
Definition: walreceiver.h:212
#define Assert(condition)
Definition: c.h:738
#define lfirst(lc)
Definition: pg_list.h:190
WalRcvExecStatus status
Definition: walreceiver.h:210
static int list_length(const List *l)
Definition: pg_list.h:169
int errmsg(const char *fmt,...)
Definition: elog.c:824
Definition: pg_list.h:50
const TupleTableSlotOps TTSOpsMinimalTuple
Definition: execTuples.c:85
RangeVar * makeRangeVar(char *schemaname, char *relname, int location)
Definition: makefuncs.c:420
#define walrcv_exec(conn, exec, nRetTypes, retTypes)
Definition: walreceiver.h:298

◆ parse_subscription_options()

static void parse_subscription_options ( List options,
bool connect,
bool enabled_given,
bool enabled,
bool create_slot,
bool slot_name_given,
char **  slot_name,
bool copy_data,
char **  synchronous_commit,
bool refresh 
)
static

Definition at line 58 of file subscriptioncmds.c.

References Assert, connect, defGetBoolean(), defGetString(), DefElem::defname, ereport, errcode(), errmsg(), ERROR, GUC_ACTION_SET, lfirst, PGC_BACKEND, PGC_S_TEST, and set_config_option().

Referenced by AlterSubscription(), and CreateSubscription().

63 {
64  ListCell *lc;
65  bool connect_given = false;
66  bool create_slot_given = false;
67  bool copy_data_given = false;
68  bool refresh_given = false;
69 
70  /* If connect is specified, the others also need to be. */
71  Assert(!connect || (enabled && create_slot && copy_data));
72 
73  if (connect)
74  *connect = true;
75  if (enabled)
76  {
77  *enabled_given = false;
78  *enabled = true;
79  }
80  if (create_slot)
81  *create_slot = true;
82  if (slot_name)
83  {
84  *slot_name_given = false;
85  *slot_name = NULL;
86  }
87  if (copy_data)
88  *copy_data = true;
90  *synchronous_commit = NULL;
91  if (refresh)
92  *refresh = true;
93 
94  /* Parse options */
95  foreach(lc, options)
96  {
97  DefElem *defel = (DefElem *) lfirst(lc);
98 
99  if (strcmp(defel->defname, "connect") == 0 && connect)
100  {
101  if (connect_given)
102  ereport(ERROR,
103  (errcode(ERRCODE_SYNTAX_ERROR),
104  errmsg("conflicting or redundant options")));
105 
106  connect_given = true;
107  *connect = defGetBoolean(defel);
108  }
109  else if (strcmp(defel->defname, "enabled") == 0 && enabled)
110  {
111  if (*enabled_given)
112  ereport(ERROR,
113  (errcode(ERRCODE_SYNTAX_ERROR),
114  errmsg("conflicting or redundant options")));
115 
116  *enabled_given = true;
117  *enabled = defGetBoolean(defel);
118  }
119  else if (strcmp(defel->defname, "create_slot") == 0 && create_slot)
120  {
121  if (create_slot_given)
122  ereport(ERROR,
123  (errcode(ERRCODE_SYNTAX_ERROR),
124  errmsg("conflicting or redundant options")));
125 
126  create_slot_given = true;
127  *create_slot = defGetBoolean(defel);
128  }
129  else if (strcmp(defel->defname, "slot_name") == 0 && slot_name)
130  {
131  if (*slot_name_given)
132  ereport(ERROR,
133  (errcode(ERRCODE_SYNTAX_ERROR),
134  errmsg("conflicting or redundant options")));
135 
136  *slot_name_given = true;
137  *slot_name = defGetString(defel);
138 
139  /* Setting slot_name = NONE is treated as no slot name. */
140  if (strcmp(*slot_name, "none") == 0)
141  *slot_name = NULL;
142  }
143  else if (strcmp(defel->defname, "copy_data") == 0 && copy_data)
144  {
145  if (copy_data_given)
146  ereport(ERROR,
147  (errcode(ERRCODE_SYNTAX_ERROR),
148  errmsg("conflicting or redundant options")));
149 
150  copy_data_given = true;
151  *copy_data = defGetBoolean(defel);
152  }
153  else if (strcmp(defel->defname, "synchronous_commit") == 0 &&
155  {
156  if (*synchronous_commit)
157  ereport(ERROR,
158  (errcode(ERRCODE_SYNTAX_ERROR),
159  errmsg("conflicting or redundant options")));
160 
162 
163  /* Test if the given value is valid for synchronous_commit GUC. */
164  (void) set_config_option("synchronous_commit", *synchronous_commit,
166  false, 0, false);
167  }
168  else if (strcmp(defel->defname, "refresh") == 0 && refresh)
169  {
170  if (refresh_given)
171  ereport(ERROR,
172  (errcode(ERRCODE_SYNTAX_ERROR),
173  errmsg("conflicting or redundant options")));
174 
175  refresh_given = true;
176  *refresh = defGetBoolean(defel);
177  }
178  else
179  ereport(ERROR,
180  (errcode(ERRCODE_SYNTAX_ERROR),
181  errmsg("unrecognized subscription parameter: \"%s\"", defel->defname)));
182  }
183 
184  /*
185  * We've been explicitly asked to not connect, that requires some
186  * additional processing.
187  */
188  if (connect && !*connect)
189  {
190  /* Check for incompatible options from the user. */
191  if (enabled && *enabled_given && *enabled)
192  ereport(ERROR,
193  (errcode(ERRCODE_SYNTAX_ERROR),
194  /*- translator: both %s are strings of the form "option = value" */
195  errmsg("%s and %s are mutually exclusive options",
196  "connect = false", "enabled = true")));
197 
198  if (create_slot && create_slot_given && *create_slot)
199  ereport(ERROR,
200  (errcode(ERRCODE_SYNTAX_ERROR),
201  errmsg("%s and %s are mutually exclusive options",
202  "connect = false", "create_slot = true")));
203 
204  if (copy_data && copy_data_given && *copy_data)
205  ereport(ERROR,
206  (errcode(ERRCODE_SYNTAX_ERROR),
207  errmsg("%s and %s are mutually exclusive options",
208  "connect = false", "copy_data = true")));
209 
210  /* Change the defaults of other options. */
211  *enabled = false;
212  *create_slot = false;
213  *copy_data = false;
214  }
215 
216  /*
217  * Do additional checking for disallowed combination when slot_name = NONE
218  * was used.
219  */
220  if (slot_name && *slot_name_given && !*slot_name)
221  {
222  if (enabled && *enabled_given && *enabled)
223  ereport(ERROR,
224  (errcode(ERRCODE_SYNTAX_ERROR),
225  /*- translator: both %s are strings of the form "option = value" */
226  errmsg("%s and %s are mutually exclusive options",
227  "slot_name = NONE", "enabled = true")));
228 
229  if (create_slot && create_slot_given && *create_slot)
230  ereport(ERROR,
231  (errcode(ERRCODE_SYNTAX_ERROR),
232  errmsg("%s and %s are mutually exclusive options",
233  "slot_name = NONE", "create_slot = true")));
234 
235  if (enabled && !*enabled_given && *enabled)
236  ereport(ERROR,
237  (errcode(ERRCODE_SYNTAX_ERROR),
238  /*- translator: both %s are strings of the form "option = value" */
239  errmsg("subscription with %s must also set %s",
240  "slot_name = NONE", "enabled = false")));
241 
242  if (create_slot && !create_slot_given && *create_slot)
243  ereport(ERROR,
244  (errcode(ERRCODE_SYNTAX_ERROR),
245  errmsg("subscription with %s must also set %s",
246  "slot_name = NONE", "create_slot = false")));
247  }
248 }
static bool create_slot
int errcode(int sqlerrcode)
Definition: elog.c:610
#define connect(s, name, namelen)
Definition: win32_port.h:435
bool defGetBoolean(DefElem *def)
Definition: define.c:111
#define ERROR
Definition: elog.h:43
char * defGetString(DefElem *def)
Definition: define.c:49
int synchronous_commit
Definition: xact.c:83
#define ereport(elevel,...)
Definition: elog.h:144
#define Assert(condition)
Definition: c.h:738
#define lfirst(lc)
Definition: pg_list.h:190
int errmsg(const char *fmt,...)
Definition: elog.c:824
char * defname
Definition: parsenodes.h:732
int set_config_option(const char *name, const char *value, GucContext context, GucSource source, GucAction action, bool changeVal, int elevel, bool is_reload)
Definition: guc.c:6941

◆ publicationListToArray()

static Datum publicationListToArray ( List publist)
static

Definition at line 254 of file subscriptioncmds.c.

References ALLOCSET_DEFAULT_SIZES, AllocSetContextCreate, construct_array(), CStringGetTextDatum, CurrentMemoryContext, ereport, errcode(), errmsg(), ERROR, lfirst, list_length(), MemoryContextDelete(), MemoryContextSwitchTo(), name, palloc(), PointerGetDatum, and strVal.

Referenced by AlterSubscription(), and CreateSubscription().

255 {
256  ArrayType *arr;
257  Datum *datums;
258  int j = 0;
259  ListCell *cell;
260  MemoryContext memcxt;
261  MemoryContext oldcxt;
262 
263  /* Create memory context for temporary allocations. */
265  "publicationListToArray to array",
267  oldcxt = MemoryContextSwitchTo(memcxt);
268 
269  datums = (Datum *) palloc(sizeof(Datum) * list_length(publist));
270 
271  foreach(cell, publist)
272  {
273  char *name = strVal(lfirst(cell));
274  ListCell *pcell;
275 
276  /* Check for duplicates. */
277  foreach(pcell, publist)
278  {
279  char *pname = strVal(lfirst(pcell));
280 
281  if (pcell == cell)
282  break;
283 
284  if (strcmp(name, pname) == 0)
285  ereport(ERROR,
286  (errcode(ERRCODE_SYNTAX_ERROR),
287  errmsg("publication name \"%s\" used more than once",
288  pname)));
289  }
290 
291  datums[j++] = CStringGetTextDatum(name);
292  }
293 
294  MemoryContextSwitchTo(oldcxt);
295 
296  arr = construct_array(datums, list_length(publist),
297  TEXTOID, -1, false, TYPALIGN_INT);
298 
299  MemoryContextDelete(memcxt);
300 
301  return PointerGetDatum(arr);
302 }
void MemoryContextDelete(MemoryContext context)
Definition: mcxt.c:211
#define AllocSetContextCreate
Definition: memutils.h:170
#define PointerGetDatum(X)
Definition: postgres.h:556
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:109
ArrayType * construct_array(Datum *elems, int nelems, Oid elmtype, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:3292
#define strVal(v)
Definition: value.h:54
int errcode(int sqlerrcode)
Definition: elog.c:610
#define ERROR
Definition: elog.h:43
#define ALLOCSET_DEFAULT_SIZES
Definition: memutils.h:192
MemoryContext CurrentMemoryContext
Definition: mcxt.c:38
uintptr_t Datum
Definition: postgres.h:367
#define ereport(elevel,...)
Definition: elog.h:144
#define lfirst(lc)
Definition: pg_list.h:190
static int list_length(const List *l)
Definition: pg_list.h:169
const char * name
Definition: encode.c:555
void * palloc(Size size)
Definition: mcxt.c:949
int errmsg(const char *fmt,...)
Definition: elog.c:824
#define CStringGetTextDatum(s)
Definition: builtins.h:87