diff options
Diffstat (limited to 'src/mongo/db/catalog/index_catalog.cpp')
| -rw-r--r-- | src/mongo/db/catalog/index_catalog.cpp | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/mongo/db/catalog/index_catalog.cpp b/src/mongo/db/catalog/index_catalog.cpp index 2a4f1ed04d7..c2360ea12d6 100644 --- a/src/mongo/db/catalog/index_catalog.cpp +++ b/src/mongo/db/catalog/index_catalog.cpp @@ -1014,6 +1014,38 @@ namespace { return entry; } + + const IndexDescriptor* IndexCatalog::refreshEntry( OperationContext* txn, + const IndexDescriptor* oldDesc ) { + txn->lockState()->assertWriteLocked( _collection->_database->name() ); + + std::string indexName = oldDesc->indexName(); + invariant( _collection->getCatalogEntry()->isIndexReady( txn, indexName ) ); + + // Notify other users of the IndexCatalog that we're about to invalidate 'oldDesc'. + const bool collectionGoingAway = false; + _collection->cursorCache()->invalidateAll( collectionGoingAway ); + + // Delete the IndexCatalogEntry that owns this descriptor. After deletion, 'oldDesc' is + // invalid and should not be dereferenced. + const bool removed = _entries.remove( oldDesc ); + invariant( removed ); + + // Ask the CollectionCatalogEntry for the new index spec. + BSONObj spec = _collection->getCatalogEntry()->getIndexSpec( txn, indexName ).getOwned(); + BSONObj keyPattern = spec.getObjectField( "key" ); + + // Re-register this index in the index catalog with the new spec. + IndexDescriptor* newDesc = new IndexDescriptor( _collection, + _getAccessMethodName( txn, keyPattern ), + spec ); + const IndexCatalogEntry* entry = _setupInMemoryStructures( txn, newDesc ); + invariant( entry->isReady( txn ) ); + + // Return the new descriptor. + return entry->descriptor(); + } + // --------------------------- namespace { |