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