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Simplify IsIndexUsableForReplicaIdentityFull()

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Take Relation as argument instead of IndexInfo.  Building the
IndexInfo is an unnecessary intermediate step here.

A future patch wants to get some information that is in the relcache
but not in IndexInfo, so this will also help there.

Discussion: https://www.postgresql.org/message-id/333d3886-b737-45c3-93f4-594c96bb405d@eisentraut.org
This commit is contained in:
Peter Eisentraut
2024-12-04 08:33:28 +01:00
parent 87ce27de69
commit 7727049e8f
3 changed files with 9 additions and 11 deletions
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16
src/backend/replication/logical/relation.c
View File

@ -781,11 +781,9 @@ FindUsableIndexForReplicaIdentityFull(Relation localrel, AttrMap *attrmap)
{
bool isUsableIdx;
Relation idxRel;
IndexInfo *idxInfo;
idxRel = index_open(idxoid, AccessShareLock);
idxInfo = BuildIndexInfo(idxRel);
isUsableIdx = IsIndexUsableForReplicaIdentityFull(idxInfo, attrmap);
isUsableIdx = IsIndexUsableForReplicaIdentityFull(idxRel, attrmap);
index_close(idxRel, AccessShareLock);
/* Return the first eligible index found */
@ -832,22 +830,22 @@ FindUsableIndexForReplicaIdentityFull(Relation localrel, AttrMap *attrmap)
* to sequential execution, which might not be a good idea in some cases.
*/
bool
IsIndexUsableForReplicaIdentityFull(IndexInfo *indexInfo, AttrMap *attrmap)
IsIndexUsableForReplicaIdentityFull(Relation idxrel, AttrMap *attrmap)
{
AttrNumber keycol;
/* Ensure that the index access method has a valid equal strategy */
if (get_equal_strategy_number_for_am(indexInfo->ii_Am) == InvalidStrategy)
if (get_equal_strategy_number_for_am(idxrel->rd_rel->relam) == InvalidStrategy)
return false;
/* The index must not be a partial index */
if (indexInfo->ii_Predicate != NIL)
if (!heap_attisnull(idxrel->rd_indextuple, Anum_pg_index_indpred, NULL))
return false;
Assert(indexInfo->ii_NumIndexAttrs >= 1);
Assert(idxrel->rd_index->indnatts >= 1);
/* The leftmost index field must not be an expression */
keycol = indexInfo->ii_IndexAttrNumbers[0];
keycol = idxrel->rd_index->indkey.values[0];
if (!AttributeNumberIsValid(keycol))
return false;
@ -865,7 +863,7 @@ IsIndexUsableForReplicaIdentityFull(IndexInfo *indexInfo, AttrMap *attrmap)
IndexAmRoutine *amroutine;
/* The given index access method must implement amgettuple. */
amroutine = GetIndexAmRoutineByAmId(indexInfo->ii_Am, false);
amroutine = GetIndexAmRoutineByAmId(idxrel->rd_rel->relam, false);
Assert(amroutine->amgettuple != NULL);
}
#endif

2
src/backend/replication/logical/worker.c
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@ -2931,7 +2931,7 @@ FindReplTupleInLocalRel(ApplyExecutionData *edata, Relation localrel,
/* Index must be PK, RI, or usable for REPLICA IDENTITY FULL tables */
Assert(GetRelationIdentityOrPK(localrel) == localidxoid ||
(remoterel->replident == REPLICA_IDENTITY_FULL &&
IsIndexUsableForReplicaIdentityFull(BuildIndexInfo(idxrel),
IsIndexUsableForReplicaIdentityFull(idxrel,
edata->targetRel->attrmap)));
index_close(idxrel, AccessShareLock);
#endif

2
src/include/replication/logicalrelation.h
View File

@ -48,7 +48,7 @@ extern LogicalRepRelMapEntry *logicalrep_partition_open(LogicalRepRelMapEntry *r
Relation partrel, AttrMap *map);
extern void logicalrep_rel_close(LogicalRepRelMapEntry *rel,
LOCKMODE lockmode);
extern bool IsIndexUsableForReplicaIdentityFull(IndexInfo *indexInfo, AttrMap *attrmap);
extern bool IsIndexUsableForReplicaIdentityFull(Relation idxrel, AttrMap *attrmap);
extern Oid GetRelationIdentityOrPK(Relation rel);
#endif /* LOGICALRELATION_H */