C++ (Cpp) ChunkManagerPtr::findChunkForDoc Examples

Example #1

File: merge_chunks_cmd.cpp Project: Cassie90/mongo

        // TODO:  Same limitations as other mongos metadata commands, sometimes we'll be stale here
        // and fail.  Need to better integrate targeting with commands.
        ShardPtr guessMergeShard( const NamespaceString& nss, const BSONObj& minKey ) {

            DBConfigPtr config = grid.getDBConfig( nss.ns() );
            if ( !config->isSharded( nss ) ) {
                config->reload();
                if ( !config->isSharded( nss ) ) {
                    return ShardPtr();
                }
            }

            ChunkManagerPtr manager = config->getChunkManager( nss );
            if ( !manager ) return ShardPtr();
            ChunkPtr chunk = manager->findChunkForDoc( minKey );
            if ( !chunk ) return ShardPtr();
            return ShardPtr( new Shard( chunk->getShard() ) );
        }