PostgreSQL Source Code  git master
pg_subscription.c File Reference
#include "postgres.h"
#include "miscadmin.h"
#include "access/genam.h"
#include "access/heapam.h"
#include "access/htup_details.h"
#include "access/tableam.h"
#include "access/xact.h"
#include "catalog/indexing.h"
#include "catalog/pg_type.h"
#include "catalog/pg_subscription.h"
#include "catalog/pg_subscription_rel.h"
#include "nodes/makefuncs.h"
#include "storage/lmgr.h"
#include "utils/array.h"
#include "utils/builtins.h"
#include "utils/fmgroids.h"
#include "utils/pg_lsn.h"
#include "utils/rel.h"
#include "utils/syscache.h"
Include dependency graph for pg_subscription.c:

Go to the source code of this file.

Functions

static Listtextarray_to_stringlist (ArrayType *textarray)
 
SubscriptionGetSubscription (Oid subid, bool missing_ok)
 
int CountDBSubscriptions (Oid dbid)
 
void FreeSubscription (Subscription *sub)
 
Oid get_subscription_oid (const char *subname, bool missing_ok)
 
char * get_subscription_name (Oid subid, bool missing_ok)
 
void AddSubscriptionRelState (Oid subid, Oid relid, char state, XLogRecPtr sublsn)
 
void UpdateSubscriptionRelState (Oid subid, Oid relid, char state, XLogRecPtr sublsn)
 
char GetSubscriptionRelState (Oid subid, Oid relid, XLogRecPtr *sublsn, bool missing_ok)
 
void RemoveSubscriptionRel (Oid subid, Oid relid)
 
ListGetSubscriptionRelations (Oid subid)
 
ListGetSubscriptionNotReadyRelations (Oid subid)
 

Function Documentation

◆ AddSubscriptionRelState()

void AddSubscriptionRelState ( Oid  subid,
Oid  relid,
char  state,
XLogRecPtr  sublsn 
)

Definition at line 241 of file pg_subscription.c.

References AccessShareLock, CatalogTupleInsert(), CharGetDatum, elog, ERROR, heap_form_tuple(), heap_freetuple(), HeapTupleIsValid, InvalidXLogRecPtr, LockSharedObject(), LSNGetDatum, NoLock, ObjectIdGetDatum, RelationGetDescr, RowExclusiveLock, SearchSysCacheCopy2, SUBSCRIPTIONRELMAP, table_close(), table_open(), and values.

Referenced by AlterSubscription_refresh(), and CreateSubscription().

243 {
244  Relation rel;
245  HeapTuple tup;
246  bool nulls[Natts_pg_subscription_rel];
247  Datum values[Natts_pg_subscription_rel];
248 
249  LockSharedObject(SubscriptionRelationId, subid, 0, AccessShareLock);
250 
251  rel = table_open(SubscriptionRelRelationId, RowExclusiveLock);
252 
253  /* Try finding existing mapping. */
255  ObjectIdGetDatum(relid),
256  ObjectIdGetDatum(subid));
257  if (HeapTupleIsValid(tup))
258  elog(ERROR, "subscription table %u in subscription %u already exists",
259  relid, subid);
260 
261  /* Form the tuple. */
262  memset(values, 0, sizeof(values));
263  memset(nulls, false, sizeof(nulls));
264  values[Anum_pg_subscription_rel_srsubid - 1] = ObjectIdGetDatum(subid);
265  values[Anum_pg_subscription_rel_srrelid - 1] = ObjectIdGetDatum(relid);
266  values[Anum_pg_subscription_rel_srsubstate - 1] = CharGetDatum(state);
267  if (sublsn != InvalidXLogRecPtr)
268  values[Anum_pg_subscription_rel_srsublsn - 1] = LSNGetDatum(sublsn);
269  else
270  nulls[Anum_pg_subscription_rel_srsublsn - 1] = true;
271 
272  tup = heap_form_tuple(RelationGetDescr(rel), values, nulls);
273 
274  /* Insert tuple into catalog. */
275  CatalogTupleInsert(rel, tup);
276 
277  heap_freetuple(tup);
278 
279  /* Cleanup. */
280  table_close(rel, NoLock);
281 }
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
#define RelationGetDescr(relation)
Definition: rel.h:445
#define AccessShareLock
Definition: lockdefs.h:36
#define LSNGetDatum(X)
Definition: pg_lsn.h:22
HeapTuple heap_form_tuple(TupleDesc tupleDescriptor, Datum *values, bool *isnull)
Definition: heaptuple.c:1020
void heap_freetuple(HeapTuple htup)
Definition: heaptuple.c:1338
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
#define NoLock
Definition: lockdefs.h:34
#define RowExclusiveLock
Definition: lockdefs.h:38
uintptr_t Datum
Definition: postgres.h:367
void LockSharedObject(Oid classid, Oid objid, uint16 objsubid, LOCKMODE lockmode)
Definition: lmgr.c:1002
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
Definition: regguts.h:298
#define CharGetDatum(X)
Definition: postgres.h:416
static Datum values[MAXATTR]
Definition: bootstrap.c:167
#define elog(elevel,...)
Definition: elog.h:226
#define SearchSysCacheCopy2(cacheId, key1, key2)
Definition: syscache.h:176
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:39
void CatalogTupleInsert(Relation heapRel, HeapTuple tup)
Definition: indexing.c:183

◆ CountDBSubscriptions()

int CountDBSubscriptions ( Oid  dbid)

Definition at line 119 of file pg_subscription.c.

References BTEqualStrategyNumber, HeapTupleIsValid, InvalidOid, NoLock, ObjectIdGetDatum, RowExclusiveLock, ScanKeyInit(), systable_beginscan(), systable_endscan(), systable_getnext(), table_close(), and table_open().

Referenced by dropdb().

120 {
121  int nsubs = 0;
122  Relation rel;
123  ScanKeyData scankey;
124  SysScanDesc scan;
125  HeapTuple tup;
126 
127  rel = table_open(SubscriptionRelationId, RowExclusiveLock);
128 
129  ScanKeyInit(&scankey,
130  Anum_pg_subscription_subdbid,
131  BTEqualStrategyNumber, F_OIDEQ,
132  ObjectIdGetDatum(dbid));
133 
134  scan = systable_beginscan(rel, InvalidOid, false,
135  NULL, 1, &scankey);
136 
137  while (HeapTupleIsValid(tup = systable_getnext(scan)))
138  nsubs++;
139 
140  systable_endscan(scan);
141 
142  table_close(rel, NoLock);
143 
144  return nsubs;
145 }
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
void systable_endscan(SysScanDesc sysscan)
Definition: genam.c:525
SysScanDesc systable_beginscan(Relation heapRelation, Oid indexId, bool indexOK, Snapshot snapshot, int nkeys, ScanKey key)
Definition: genam.c:352
HeapTuple systable_getnext(SysScanDesc sysscan)
Definition: genam.c:444
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define NoLock
Definition: lockdefs.h:34
#define RowExclusiveLock
Definition: lockdefs.h:38
#define InvalidOid
Definition: postgres_ext.h:36
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
void ScanKeyInit(ScanKey entry, AttrNumber attributeNumber, StrategyNumber strategy, RegProcedure procedure, Datum argument)
Definition: scankey.c:76
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:39
#define BTEqualStrategyNumber
Definition: stratnum.h:31

◆ FreeSubscription()

void FreeSubscription ( Subscription sub)

Definition at line 151 of file pg_subscription.c.

References Subscription::conninfo, list_free_deep(), Subscription::name, pfree(), Subscription::publications, and Subscription::slotname.

Referenced by maybe_reread_subscription().

152 {
153  pfree(sub->name);
154  pfree(sub->conninfo);
155  if (sub->slotname)
156  pfree(sub->slotname);
158  pfree(sub);
159 }
void list_free_deep(List *list)
Definition: list.c:1391
void pfree(void *pointer)
Definition: mcxt.c:1056
List * publications

◆ get_subscription_name()

char* get_subscription_name ( Oid  subid,
bool  missing_ok 
)

Definition at line 188 of file pg_subscription.c.

References elog, ERROR, GETSTRUCT, HeapTupleIsValid, NameStr, ObjectIdGetDatum, pstrdup(), ReleaseSysCache(), SearchSysCache1(), subname, and SUBSCRIPTIONOID.

Referenced by getObjectDescription(), and getObjectIdentityParts().

189 {
190  HeapTuple tup;
191  char *subname;
192  Form_pg_subscription subform;
193 
195 
196  if (!HeapTupleIsValid(tup))
197  {
198  if (!missing_ok)
199  elog(ERROR, "cache lookup failed for subscription %u", subid);
200  return NULL;
201  }
202 
203  subform = (Form_pg_subscription) GETSTRUCT(tup);
204  subname = pstrdup(NameStr(subform->subname));
205 
206  ReleaseSysCache(tup);
207 
208  return subname;
209 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
char * pstrdup(const char *in)
Definition: mcxt.c:1186
FormData_pg_subscription * Form_pg_subscription
NameData subname
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1124
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1172
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
#define elog(elevel,...)
Definition: elog.h:226
#define NameStr(name)
Definition: c.h:609

◆ get_subscription_oid()

Oid get_subscription_oid ( const char *  subname,
bool  missing_ok 
)

Definition at line 168 of file pg_subscription.c.

References CStringGetDatum, ereport, errcode(), errmsg(), ERROR, GetSysCacheOid2, MyDatabaseId, OidIsValid, and SUBSCRIPTIONNAME.

Referenced by get_object_address_unqualified().

169 {
170  Oid oid;
171 
172  oid = GetSysCacheOid2(SUBSCRIPTIONNAME, Anum_pg_subscription_oid,
174  if (!OidIsValid(oid) && !missing_ok)
175  ereport(ERROR,
176  (errcode(ERRCODE_UNDEFINED_OBJECT),
177  errmsg("subscription \"%s\" does not exist", subname)));
178  return oid;
179 }
int errcode(int sqlerrcode)
Definition: elog.c:570
unsigned int Oid
Definition: postgres_ext.h:31
NameData subname
#define OidIsValid(objectId)
Definition: c.h:638
#define ERROR
Definition: elog.h:43
#define CStringGetDatum(X)
Definition: postgres.h:578
#define ereport(elevel, rest)
Definition: elog.h:141
Oid MyDatabaseId
Definition: globals.c:85
#define GetSysCacheOid2(cacheId, oidcol, key1, key2)
Definition: syscache.h:194
int errmsg(const char *fmt,...)
Definition: elog.c:784

◆ GetSubscription()

Subscription* GetSubscription ( Oid  subid,
bool  missing_ok 
)

Definition at line 48 of file pg_subscription.c.

References Assert, Subscription::conninfo, DatumGetArrayTypeP, DatumGetName, Subscription::dbid, elog, Subscription::enabled, ERROR, GETSTRUCT, HeapTupleIsValid, Subscription::name, NameStr, ObjectIdGetDatum, Subscription::oid, Subscription::owner, palloc(), pstrdup(), Subscription::publications, ReleaseSysCache(), SearchSysCache1(), Subscription::slotname, SUBSCRIPTIONOID, Subscription::synccommit, SysCacheGetAttr(), textarray_to_stringlist(), and TextDatumGetCString.

Referenced by AlterSubscription(), ApplyWorkerMain(), and maybe_reread_subscription().

49 {
50  HeapTuple tup;
51  Subscription *sub;
52  Form_pg_subscription subform;
53  Datum datum;
54  bool isnull;
55 
57 
58  if (!HeapTupleIsValid(tup))
59  {
60  if (missing_ok)
61  return NULL;
62 
63  elog(ERROR, "cache lookup failed for subscription %u", subid);
64  }
65 
66  subform = (Form_pg_subscription) GETSTRUCT(tup);
67 
68  sub = (Subscription *) palloc(sizeof(Subscription));
69  sub->oid = subid;
70  sub->dbid = subform->subdbid;
71  sub->name = pstrdup(NameStr(subform->subname));
72  sub->owner = subform->subowner;
73  sub->enabled = subform->subenabled;
74 
75  /* Get conninfo */
77  tup,
78  Anum_pg_subscription_subconninfo,
79  &isnull);
80  Assert(!isnull);
81  sub->conninfo = TextDatumGetCString(datum);
82 
83  /* Get slotname */
85  tup,
86  Anum_pg_subscription_subslotname,
87  &isnull);
88  if (!isnull)
89  sub->slotname = pstrdup(NameStr(*DatumGetName(datum)));
90  else
91  sub->slotname = NULL;
92 
93  /* Get synccommit */
95  tup,
96  Anum_pg_subscription_subsynccommit,
97  &isnull);
98  Assert(!isnull);
99  sub->synccommit = TextDatumGetCString(datum);
100 
101  /* Get publications */
103  tup,
104  Anum_pg_subscription_subpublications,
105  &isnull);
106  Assert(!isnull);
108 
109  ReleaseSysCache(tup);
110 
111  return sub;
112 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
char * pstrdup(const char *in)
Definition: mcxt.c:1186
FormData_pg_subscription * Form_pg_subscription
#define DatumGetName(X)
Definition: postgres.h:585
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
static List * textarray_to_stringlist(ArrayType *textarray)
List * publications
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1124
#define TextDatumGetCString(d)
Definition: builtins.h:84
uintptr_t Datum
Definition: postgres.h:367
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1172
Datum SysCacheGetAttr(int cacheId, HeapTuple tup, AttrNumber attributeNumber, bool *isNull)
Definition: syscache.c:1385
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
#define Assert(condition)
Definition: c.h:732
void * palloc(Size size)
Definition: mcxt.c:949
#define elog(elevel,...)
Definition: elog.h:226
#define NameStr(name)
Definition: c.h:609
#define DatumGetArrayTypeP(X)
Definition: array.h:249

◆ GetSubscriptionNotReadyRelations()

List* GetSubscriptionNotReadyRelations ( Oid  subid)

Definition at line 484 of file pg_subscription.c.

References AccessShareLock, BTEqualStrategyNumber, CharGetDatum, GETSTRUCT, HeapTupleIsValid, InvalidOid, lappend(), SubscriptionRelState::lsn, NIL, ObjectIdGetDatum, palloc(), SubscriptionRelState::relid, ScanKeyInit(), SubscriptionRelState::state, systable_beginscan(), systable_endscan(), systable_getnext(), table_close(), and table_open().

Referenced by process_syncing_tables_for_apply().

485 {
486  List *res = NIL;
487  Relation rel;
488  HeapTuple tup;
489  int nkeys = 0;
490  ScanKeyData skey[2];
491  SysScanDesc scan;
492 
493  rel = table_open(SubscriptionRelRelationId, AccessShareLock);
494 
495  ScanKeyInit(&skey[nkeys++],
496  Anum_pg_subscription_rel_srsubid,
497  BTEqualStrategyNumber, F_OIDEQ,
498  ObjectIdGetDatum(subid));
499 
500  ScanKeyInit(&skey[nkeys++],
501  Anum_pg_subscription_rel_srsubstate,
502  BTEqualStrategyNumber, F_CHARNE,
503  CharGetDatum(SUBREL_STATE_READY));
504 
505  scan = systable_beginscan(rel, InvalidOid, false,
506  NULL, nkeys, skey);
507 
508  while (HeapTupleIsValid(tup = systable_getnext(scan)))
509  {
511  SubscriptionRelState *relstate;
512 
513  subrel = (Form_pg_subscription_rel) GETSTRUCT(tup);
514 
515  relstate = (SubscriptionRelState *) palloc(sizeof(SubscriptionRelState));
516  relstate->relid = subrel->srrelid;
517  relstate->state = subrel->srsubstate;
518  relstate->lsn = subrel->srsublsn;
519 
520  res = lappend(res, relstate);
521  }
522 
523  /* Cleanup */
524  systable_endscan(scan);
526 
527  return res;
528 }
#define NIL
Definition: pg_list.h:65
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
void systable_endscan(SysScanDesc sysscan)
Definition: genam.c:525
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
#define AccessShareLock
Definition: lockdefs.h:36
SysScanDesc systable_beginscan(Relation heapRelation, Oid indexId, bool indexOK, Snapshot snapshot, int nkeys, ScanKey key)
Definition: genam.c:352
HeapTuple systable_getnext(SysScanDesc sysscan)
Definition: genam.c:444
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
List * lappend(List *list, void *datum)
Definition: list.c:322
#define InvalidOid
Definition: postgres_ext.h:36
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
FormData_pg_subscription_rel * Form_pg_subscription_rel
#define CharGetDatum(X)
Definition: postgres.h:416
void * palloc(Size size)
Definition: mcxt.c:949
void ScanKeyInit(ScanKey entry, AttrNumber attributeNumber, StrategyNumber strategy, RegProcedure procedure, Datum argument)
Definition: scankey.c:76
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:39
Definition: pg_list.h:50
#define BTEqualStrategyNumber
Definition: stratnum.h:31

◆ GetSubscriptionRelations()

List* GetSubscriptionRelations ( Oid  subid)

Definition at line 437 of file pg_subscription.c.

References AccessShareLock, BTEqualStrategyNumber, GETSTRUCT, HeapTupleIsValid, InvalidOid, lappend(), SubscriptionRelState::lsn, NIL, ObjectIdGetDatum, palloc(), SubscriptionRelState::relid, ScanKeyInit(), SubscriptionRelState::state, systable_beginscan(), systable_endscan(), systable_getnext(), table_close(), and table_open().

Referenced by AlterSubscription_refresh().

438 {
439  List *res = NIL;
440  Relation rel;
441  HeapTuple tup;
442  int nkeys = 0;
443  ScanKeyData skey[2];
444  SysScanDesc scan;
445 
446  rel = table_open(SubscriptionRelRelationId, AccessShareLock);
447 
448  ScanKeyInit(&skey[nkeys++],
449  Anum_pg_subscription_rel_srsubid,
450  BTEqualStrategyNumber, F_OIDEQ,
451  ObjectIdGetDatum(subid));
452 
453  scan = systable_beginscan(rel, InvalidOid, false,
454  NULL, nkeys, skey);
455 
456  while (HeapTupleIsValid(tup = systable_getnext(scan)))
457  {
459  SubscriptionRelState *relstate;
460 
461  subrel = (Form_pg_subscription_rel) GETSTRUCT(tup);
462 
463  relstate = (SubscriptionRelState *) palloc(sizeof(SubscriptionRelState));
464  relstate->relid = subrel->srrelid;
465  relstate->state = subrel->srsubstate;
466  relstate->lsn = subrel->srsublsn;
467 
468  res = lappend(res, relstate);
469  }
470 
471  /* Cleanup */
472  systable_endscan(scan);
474 
475  return res;
476 }
#define NIL
Definition: pg_list.h:65
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
void systable_endscan(SysScanDesc sysscan)
Definition: genam.c:525
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
#define AccessShareLock
Definition: lockdefs.h:36
SysScanDesc systable_beginscan(Relation heapRelation, Oid indexId, bool indexOK, Snapshot snapshot, int nkeys, ScanKey key)
Definition: genam.c:352
HeapTuple systable_getnext(SysScanDesc sysscan)
Definition: genam.c:444
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
List * lappend(List *list, void *datum)
Definition: list.c:322
#define InvalidOid
Definition: postgres_ext.h:36
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
FormData_pg_subscription_rel * Form_pg_subscription_rel
void * palloc(Size size)
Definition: mcxt.c:949
void ScanKeyInit(ScanKey entry, AttrNumber attributeNumber, StrategyNumber strategy, RegProcedure procedure, Datum argument)
Definition: scankey.c:76
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:39
Definition: pg_list.h:50
#define BTEqualStrategyNumber
Definition: stratnum.h:31

◆ GetSubscriptionRelState()

char GetSubscriptionRelState ( Oid  subid,
Oid  relid,
XLogRecPtr sublsn,
bool  missing_ok 
)

Definition at line 338 of file pg_subscription.c.

References AccessShareLock, Assert, DatumGetChar, DatumGetLSN, elog, ERROR, HeapTupleIsValid, InvalidXLogRecPtr, ObjectIdGetDatum, ReleaseSysCache(), SearchSysCache2(), SUBSCRIPTIONRELMAP, SysCacheGetAttr(), table_close(), and table_open().

Referenced by logicalrep_rel_open(), LogicalRepSyncTableStart(), and wait_for_relation_state_change().

340 {
341  Relation rel;
342  HeapTuple tup;
343  char substate;
344  bool isnull;
345  Datum d;
346 
347  rel = table_open(SubscriptionRelRelationId, AccessShareLock);
348 
349  /* Try finding the mapping. */
351  ObjectIdGetDatum(relid),
352  ObjectIdGetDatum(subid));
353 
354  if (!HeapTupleIsValid(tup))
355  {
356  if (missing_ok)
357  {
359  *sublsn = InvalidXLogRecPtr;
360  return SUBREL_STATE_UNKNOWN;
361  }
362 
363  elog(ERROR, "subscription table %u in subscription %u does not exist",
364  relid, subid);
365  }
366 
367  /* Get the state. */
369  Anum_pg_subscription_rel_srsubstate, &isnull);
370  Assert(!isnull);
371  substate = DatumGetChar(d);
373  Anum_pg_subscription_rel_srsublsn, &isnull);
374  if (isnull)
375  *sublsn = InvalidXLogRecPtr;
376  else
377  *sublsn = DatumGetLSN(d);
378 
379  /* Cleanup */
380  ReleaseSysCache(tup);
382 
383  return substate;
384 }
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
#define AccessShareLock
Definition: lockdefs.h:36
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
uintptr_t Datum
Definition: postgres.h:367
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1172
#define DatumGetChar(X)
Definition: postgres.h:409
Datum SysCacheGetAttr(int cacheId, HeapTuple tup, AttrNumber attributeNumber, bool *isNull)
Definition: syscache.c:1385
#define DatumGetLSN(X)
Definition: pg_lsn.h:21
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
#define Assert(condition)
Definition: c.h:732
HeapTuple SearchSysCache2(int cacheId, Datum key1, Datum key2)
Definition: syscache.c:1135
#define elog(elevel,...)
Definition: elog.h:226
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:39

◆ RemoveSubscriptionRel()

void RemoveSubscriptionRel ( Oid  subid,
Oid  relid 
)

Definition at line 391 of file pg_subscription.c.

References BTEqualStrategyNumber, CatalogTupleDelete(), ForwardScanDirection, heap_getnext(), HeapTupleIsValid, ObjectIdGetDatum, OidIsValid, RowExclusiveLock, ScanKeyInit(), HeapTupleData::t_self, table_beginscan_catalog(), table_close(), table_endscan(), and table_open().

Referenced by AlterSubscription_refresh(), DropSubscription(), and heap_drop_with_catalog().

392 {
393  Relation rel;
394  TableScanDesc scan;
395  ScanKeyData skey[2];
396  HeapTuple tup;
397  int nkeys = 0;
398 
399  rel = table_open(SubscriptionRelRelationId, RowExclusiveLock);
400 
401  if (OidIsValid(subid))
402  {
403  ScanKeyInit(&skey[nkeys++],
404  Anum_pg_subscription_rel_srsubid,
406  F_OIDEQ,
407  ObjectIdGetDatum(subid));
408  }
409 
410  if (OidIsValid(relid))
411  {
412  ScanKeyInit(&skey[nkeys++],
413  Anum_pg_subscription_rel_srrelid,
415  F_OIDEQ,
416  ObjectIdGetDatum(relid));
417  }
418 
419  /* Do the search and delete what we found. */
420  scan = table_beginscan_catalog(rel, nkeys, skey);
422  {
423  CatalogTupleDelete(rel, &tup->t_self);
424  }
425  table_endscan(scan);
426 
428 }
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
TableScanDesc table_beginscan_catalog(Relation relation, int nkeys, struct ScanKeyData *key)
Definition: tableam.c:98
void CatalogTupleDelete(Relation heapRel, ItemPointer tid)
Definition: indexing.c:269
#define OidIsValid(objectId)
Definition: c.h:638
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
ItemPointerData t_self
Definition: htup.h:65
HeapTuple heap_getnext(TableScanDesc sscan, ScanDirection direction)
Definition: heapam.c:1290
#define RowExclusiveLock
Definition: lockdefs.h:38
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
static void table_endscan(TableScanDesc scan)
Definition: tableam.h:831
void ScanKeyInit(ScanKey entry, AttrNumber attributeNumber, StrategyNumber strategy, RegProcedure procedure, Datum argument)
Definition: scankey.c:76
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:39
#define BTEqualStrategyNumber
Definition: stratnum.h:31

◆ textarray_to_stringlist()

static List * textarray_to_stringlist ( ArrayType textarray)
static

Definition at line 217 of file pg_subscription.c.

References deconstruct_array(), i, lappend(), makeString(), NIL, and TextDatumGetCString.

Referenced by GetSubscription().

218 {
219  Datum *elems;
220  int nelems,
221  i;
222  List *res = NIL;
223 
224  deconstruct_array(textarray,
225  TEXTOID, -1, false, 'i',
226  &elems, NULL, &nelems);
227 
228  if (nelems == 0)
229  return NIL;
230 
231  for (i = 0; i < nelems; i++)
232  res = lappend(res, makeString(TextDatumGetCString(elems[i])));
233 
234  return res;
235 }
Value * makeString(char *str)
Definition: value.c:53
#define NIL
Definition: pg_list.h:65
List * lappend(List *list, void *datum)
Definition: list.c:322
#define TextDatumGetCString(d)
Definition: builtins.h:84
uintptr_t Datum
Definition: postgres.h:367
void deconstruct_array(ArrayType *array, Oid elmtype, int elmlen, bool elmbyval, char elmalign, Datum **elemsp, bool **nullsp, int *nelemsp)
Definition: arrayfuncs.c:3461
int i
Definition: pg_list.h:50

◆ UpdateSubscriptionRelState()

void UpdateSubscriptionRelState ( Oid  subid,
Oid  relid,
char  state,
XLogRecPtr  sublsn 
)

Definition at line 287 of file pg_subscription.c.

References AccessShareLock, CatalogTupleUpdate(), CharGetDatum, elog, ERROR, heap_modify_tuple(), HeapTupleIsValid, InvalidXLogRecPtr, LockSharedObject(), LSNGetDatum, NoLock, ObjectIdGetDatum, RelationGetDescr, RowExclusiveLock, SearchSysCacheCopy2, SUBSCRIPTIONRELMAP, HeapTupleData::t_self, table_close(), table_open(), and values.

Referenced by LogicalRepSyncTableStart(), process_syncing_tables_for_apply(), and process_syncing_tables_for_sync().

289 {
290  Relation rel;
291  HeapTuple tup;
292  bool nulls[Natts_pg_subscription_rel];
293  Datum values[Natts_pg_subscription_rel];
294  bool replaces[Natts_pg_subscription_rel];
295 
296  LockSharedObject(SubscriptionRelationId, subid, 0, AccessShareLock);
297 
298  rel = table_open(SubscriptionRelRelationId, RowExclusiveLock);
299 
300  /* Try finding existing mapping. */
302  ObjectIdGetDatum(relid),
303  ObjectIdGetDatum(subid));
304  if (!HeapTupleIsValid(tup))
305  elog(ERROR, "subscription table %u in subscription %u does not exist",
306  relid, subid);
307 
308  /* Update the tuple. */
309  memset(values, 0, sizeof(values));
310  memset(nulls, false, sizeof(nulls));
311  memset(replaces, false, sizeof(replaces));
312 
313  replaces[Anum_pg_subscription_rel_srsubstate - 1] = true;
314  values[Anum_pg_subscription_rel_srsubstate - 1] = CharGetDatum(state);
315 
316  replaces[Anum_pg_subscription_rel_srsublsn - 1] = true;
317  if (sublsn != InvalidXLogRecPtr)
318  values[Anum_pg_subscription_rel_srsublsn - 1] = LSNGetDatum(sublsn);
319  else
320  nulls[Anum_pg_subscription_rel_srsublsn - 1] = true;
321 
322  tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,
323  replaces);
324 
325  /* Update the catalog. */
326  CatalogTupleUpdate(rel, &tup->t_self, tup);
327 
328  /* Cleanup. */
329  table_close(rel, NoLock);
330 }
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:133
#define RelationGetDescr(relation)
Definition: rel.h:445
#define AccessShareLock
Definition: lockdefs.h:36
#define LSNGetDatum(X)
Definition: pg_lsn.h:22
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
ItemPointerData t_self
Definition: htup.h:65
#define NoLock
Definition: lockdefs.h:34
#define RowExclusiveLock
Definition: lockdefs.h:38
uintptr_t Datum
Definition: postgres.h:367
void LockSharedObject(Oid classid, Oid objid, uint16 objsubid, LOCKMODE lockmode)
Definition: lmgr.c:1002
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
Definition: regguts.h:298
void CatalogTupleUpdate(Relation heapRel, ItemPointer otid, HeapTuple tup)
Definition: indexing.c:224
#define CharGetDatum(X)
Definition: postgres.h:416
static Datum values[MAXATTR]
Definition: bootstrap.c:167
#define elog(elevel,...)
Definition: elog.h:226
#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