50 lines
2.2 KiB
SQL
50 lines
2.2 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 "insertion" events and
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-- their next_chunk_id's so we can navigate to the next chunk of history.
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CREATE TABLE IF NOT EXISTS insertion_events(
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event_id TEXT NOT NULL,
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room_id TEXT NOT NULL,
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next_chunk_id TEXT NOT NULL
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);
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CREATE UNIQUE INDEX IF NOT EXISTS insertion_events_event_id ON insertion_events(event_id);
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CREATE INDEX IF NOT EXISTS insertion_events_next_chunk_id ON insertion_events(next_chunk_id);
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-- Add a table that keeps track of all of the events we are inserting between.
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-- We use this when navigating the DAG and when we hit an event which matches
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-- `insertion_prev_event_id`, it should backfill from the "insertion" event and
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-- navigate the historical messages from there.
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CREATE TABLE IF NOT EXISTS insertion_event_edges(
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event_id TEXT NOT NULL,
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room_id TEXT NOT NULL,
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insertion_prev_event_id TEXT NOT NULL
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);
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CREATE UNIQUE INDEX IF NOT EXISTS insertion_event_edges_event_id ON insertion_event_edges(event_id);
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CREATE INDEX IF NOT EXISTS insertion_event_edges_insertion_room_id ON insertion_event_edges(room_id);
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CREATE INDEX IF NOT EXISTS insertion_event_edges_insertion_prev_event_id ON insertion_event_edges(insertion_prev_event_id);
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-- Add a table that keeps track of how each chunk is labeled. The chunks are
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-- connected together based on an insertion events `next_chunk_id`.
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CREATE TABLE IF NOT EXISTS chunk_events(
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event_id TEXT NOT NULL,
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room_id TEXT NOT NULL,
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chunk_id TEXT NOT NULL
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);
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CREATE UNIQUE INDEX IF NOT EXISTS chunk_events_event_id ON chunk_events(event_id);
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CREATE INDEX IF NOT EXISTS chunk_events_chunk_id ON chunk_events(chunk_id);
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