/* Copyright 2020 The Matrix.org Foundation C.I.C
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

-- We need to store the stream positions by instance in a sharded config world.
--
-- We default to master as we want the column to be NOT NULL and we correctly
-- reset the instance name to match the config each time we start up.
ALTER TABLE federation_stream_position ADD COLUMN instance_name TEXT NOT NULL DEFAULT 'master';

CREATE UNIQUE INDEX federation_stream_position_instance ON federation_stream_position(type, instance_name);