34 lines
1.5 KiB
SQL
34 lines
1.5 KiB
SQL
/* Copyright 2021 The Matrix.org Foundation C.I.C
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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-- Add a table that keeps track of a list of users who should, upon their next
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-- sync request, receive presence for all currently online users that they are
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-- "interested" in.
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-- The motivation for a DB table over an in-memory list is so that this list
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-- can be added to and retrieved from by any worker. Specifically, we don't
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-- want to duplicate work across multiple sync workers.
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CREATE TABLE IF NOT EXISTS users_to_send_full_presence_to(
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-- The user ID to send full presence to.
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user_id TEXT PRIMARY KEY,
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-- A presence stream ID token - the current presence stream token when the row was last upserted.
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-- If a user calls /sync and this token is part of the update they're to receive, we also include
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-- full user presence in the response.
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-- This allows multiple devices for a user to receive full presence whenever they next call /sync.
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presence_stream_id BIGINT,
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FOREIGN KEY (user_id)
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REFERENCES users (name)
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); |