2022-04-01 13:33:25 +00:00
|
|
|
#
|
2023-11-21 20:29:58 +00:00
|
|
|
# This file is licensed under the Affero General Public License (AGPL) version 3.
|
|
|
|
#
|
2024-01-23 11:26:48 +00:00
|
|
|
# Copyright 2022 Beeper
|
2023-11-21 20:29:58 +00:00
|
|
|
# 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]
|
2022-04-01 13:33:25 +00:00
|
|
|
#
|
|
|
|
#
|
|
|
|
|
|
|
|
|
|
|
|
"""
|
|
|
|
Adds a postgres SEQUENCE for generating application service transaction IDs.
|
|
|
|
"""
|
|
|
|
|
2023-04-27 12:44:53 +00:00
|
|
|
from synapse.storage.database import LoggingTransaction
|
|
|
|
from synapse.storage.engines import BaseDatabaseEngine, PostgresEngine
|
2022-04-01 13:33:25 +00:00
|
|
|
|
|
|
|
|
2023-04-27 12:44:53 +00:00
|
|
|
def run_create(cur: LoggingTransaction, database_engine: BaseDatabaseEngine) -> None:
|
2022-04-01 13:33:25 +00:00
|
|
|
if isinstance(database_engine, PostgresEngine):
|
|
|
|
# If we already have some AS TXNs we want to start from the current
|
|
|
|
# maximum value. There are two potential places this is stored - the
|
|
|
|
# actual TXNs themselves *and* the AS state table. At time of migration
|
|
|
|
# it is possible the TXNs table is empty so we must include the AS state
|
|
|
|
# last_txn as a potential option, and pick the maximum.
|
|
|
|
|
|
|
|
cur.execute("SELECT COALESCE(max(txn_id), 0) FROM application_services_txns")
|
|
|
|
row = cur.fetchone()
|
2023-04-27 12:44:53 +00:00
|
|
|
assert row is not None
|
2022-04-01 13:33:25 +00:00
|
|
|
txn_max = row[0]
|
|
|
|
|
|
|
|
cur.execute("SELECT COALESCE(max(last_txn), 0) FROM application_services_state")
|
|
|
|
row = cur.fetchone()
|
2023-04-27 12:44:53 +00:00
|
|
|
assert row is not None
|
2022-04-01 13:33:25 +00:00
|
|
|
last_txn_max = row[0]
|
|
|
|
|
|
|
|
start_val = max(last_txn_max, txn_max) + 1
|
|
|
|
|
|
|
|
cur.execute(
|
|
|
|
"CREATE SEQUENCE application_services_txn_id_seq START WITH %s",
|
|
|
|
(start_val,),
|
|
|
|
)
|