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93 lines
3.0 KiB
Python
93 lines
3.0 KiB
Python
# Copyright 2023 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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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 profiles 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 the constraint
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process_rows_sql = """
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UPDATE profiles
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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 profiles 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 profiles 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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# in SQLite we need to rewrite the table to add the constraint.
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# First drop any temporary table that might be here from a previous failed migration.
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cur.execute("DROP TABLE IF EXISTS temp_profiles")
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create_sql = """
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CREATE TABLE temp_profiles (
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full_user_id text NOT NULL,
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user_id text,
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displayname text,
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avatar_url text,
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UNIQUE (full_user_id),
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UNIQUE (user_id)
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)
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"""
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cur.execute(create_sql)
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copy_sql = """
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INSERT INTO temp_profiles (
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user_id,
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displayname,
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avatar_url,
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full_user_id)
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SELECT user_id, displayname, avatar_url, '@' || user_id || ':' || ? FROM profiles
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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 profiles
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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_profiles RENAME to profiles
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"""
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cur.execute(rename_sql)
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