forked-synapse/synapse/storage/schema/main/delta/78/02_validate_and_update_user_filters.py
Erik Johnston 23740eaa3d
Correctly mention previous copyright (#16820)
During the migration the automated script to update the copyright
headers accidentally got rid of some of the existing copyright lines.
Reinstate them.
2024-01-23 11:26:48 +00:00

101 lines
3.2 KiB
Python

#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright 2023 The Matrix.org Foundation C.I.C
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
from synapse.config.homeserver import HomeServerConfig
from synapse.storage.database import LoggingTransaction
from synapse.storage.engines import BaseDatabaseEngine, PostgresEngine
def run_upgrade(
cur: LoggingTransaction,
database_engine: BaseDatabaseEngine,
config: HomeServerConfig,
) -> None:
"""
Part 3 of a multi-step migration to drop the column `user_id` and replace it with
`full_user_id`. See the database schema docs for more information on the full
migration steps.
"""
hostname = config.server.server_name
if isinstance(database_engine, PostgresEngine):
# check if the constraint can be validated
check_sql = """
SELECT user_id from user_filters WHERE full_user_id IS NULL
"""
cur.execute(check_sql)
res = cur.fetchall()
if res:
# there are rows the background job missed, finish them here before we validate constraint
process_rows_sql = """
UPDATE user_filters
SET full_user_id = '@' || user_id || ?
WHERE user_id IN (
SELECT user_id FROM user_filters WHERE full_user_id IS NULL
)
"""
cur.execute(process_rows_sql, (f":{hostname}",))
# Now we can validate
validate_sql = """
ALTER TABLE user_filters VALIDATE CONSTRAINT full_user_id_not_null
"""
cur.execute(validate_sql)
else:
cur.execute("DROP TABLE IF EXISTS temp_user_filters")
create_sql = """
CREATE TABLE temp_user_filters (
full_user_id text NOT NULL,
user_id text NOT NULL,
filter_id bigint NOT NULL,
filter_json bytea NOT NULL
)
"""
cur.execute(create_sql)
index_sql = """
CREATE UNIQUE INDEX IF NOT EXISTS user_filters_unique ON
temp_user_filters (user_id, filter_id)
"""
cur.execute(index_sql)
copy_sql = """
INSERT INTO temp_user_filters (
user_id,
filter_id,
filter_json,
full_user_id)
SELECT user_id, filter_id, filter_json, '@' || user_id || ':' || ? FROM user_filters
"""
cur.execute(copy_sql, (f"{hostname}",))
drop_sql = """
DROP TABLE user_filters
"""
cur.execute(drop_sql)
rename_sql = """
ALTER TABLE temp_user_filters RENAME to user_filters
"""
cur.execute(rename_sql)