Function TrySetCollectionShard

pg_documentdb/src/metadata/collection.c:600–633

static void
TrySetCollectionShard(MongoCollection *collection)
{
	if (collection->isShardRemote)
	{
		return;
	}

	int savedGUCLevel = NewGUCNestLevel();
	SetGUCLocally("client_min_messages", "WARNING");

	/* Get shard table name (distributed) or original tableName (single node) */
	const char *shardName = TryGetShardNameForUnshardedCollection(
		collection->relationId, collection->collectionId, collection->tableName);
	RollbackGUCChange(savedGUCLevel);
	if (shardName != NULL)
	{
		if (shardName[0] == '\0')
		{
			collection->shardTableName[0] = '\0';
			collection->isShardRemote = true;
		}
		else
		{
			strcpy(collection->shardTableName, shardName);
			collection->isShardRemote = false;
		}
	}
	else
	{
		collection->isShardRemote = false;
		collection->shardTableName[0] = '\0';
	}
}


/*