MatrixSynapse/synapse/storage/databases/main/schema/delta/58/10federation_pos_instance_n...

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/* 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);