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Use a chain cover index to efficiently calculate auth chain difference (#8868)

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Erik Johnston 2021-01-11 16:09:22 +00:00 • committed by GitHub
parent 671138f658
commit 1315a2e8be
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14 changed files with 1777 additions and 56 deletions
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52
synapse/storage/databases/main/schema/delta/59/04_event_auth_chains.sql Normal file
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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.
*/
-- See docs/auth_chain_difference_algorithm.md
CREATE TABLE event_auth_chains (
event_id TEXT PRIMARY KEY,
chain_id BIGINT NOT NULL,
sequence_number BIGINT NOT NULL
);
CREATE UNIQUE INDEX event_auth_chains_c_seq_index ON event_auth_chains (chain_id, sequence_number);
CREATE TABLE event_auth_chain_links (
origin_chain_id BIGINT NOT NULL,
origin_sequence_number BIGINT NOT NULL,
target_chain_id BIGINT NOT NULL,
target_sequence_number BIGINT NOT NULL
);
CREATE INDEX event_auth_chain_links_idx ON event_auth_chain_links (origin_chain_id, target_chain_id);
-- Events that we have persisted but not calculated auth chains for,
-- e.g. out of band memberships (where we don't have the auth chain)
CREATE TABLE event_auth_chain_to_calculate (
event_id TEXT PRIMARY KEY,
room_id TEXT NOT NULL,
type TEXT NOT NULL,
state_key TEXT NOT NULL
);
CREATE INDEX event_auth_chain_to_calculate_rm_id ON event_auth_chain_to_calculate(room_id);
-- Whether we've calculated the above index for a room.
ALTER TABLE rooms ADD COLUMN has_auth_chain_index BOOLEAN;

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synapse/storage/databases/main/schema/delta/59/04_event_auth_chains.sql.postgres Normal file
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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.
*/
CREATE SEQUENCE IF NOT EXISTS event_auth_chain_id;