mirror of
https://mau.dev/maunium/synapse.git
synced 2024-06-02 18:59:04 +02:00
60 lines
1.9 KiB
Python
60 lines
1.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2015 OpenMarket Ltd
|
|
#
|
|
# 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.
|
|
|
|
from synapse.storage import prepare_database
|
|
|
|
from ._base import IncorrectDatabaseSetup
|
|
|
|
|
|
class PostgresEngine(object):
|
|
def __init__(self, database_module):
|
|
self.module = database_module
|
|
self.module.extensions.register_type(self.module.extensions.UNICODE)
|
|
|
|
def check_database(self, txn):
|
|
txn.execute("SHOW SERVER_ENCODING")
|
|
rows = txn.fetchall()
|
|
if rows and rows[0][0] != "UTF8":
|
|
raise IncorrectDatabaseSetup(
|
|
"Database has incorrect encoding: '%s' instead of 'UTF8'\n"
|
|
"See docs/postgres.rst for more information."
|
|
% (rows[0][0],)
|
|
)
|
|
|
|
def convert_param_style(self, sql):
|
|
return sql.replace("?", "%s")
|
|
|
|
def encode_parameter(self, param):
|
|
return param
|
|
|
|
def on_new_connection(self, db_conn):
|
|
db_conn.set_isolation_level(
|
|
self.module.extensions.ISOLATION_LEVEL_REPEATABLE_READ
|
|
)
|
|
|
|
def prepare_database(self, db_conn):
|
|
prepare_database(db_conn, self)
|
|
|
|
def is_deadlock(self, error):
|
|
if isinstance(error, self.module.DatabaseError):
|
|
return error.pgcode in ["40001", "40P01"]
|
|
return False
|
|
|
|
def is_connection_closed(self, conn):
|
|
return bool(conn)
|
|
|
|
def lock_table(self, txn, table):
|
|
txn.execute("LOCK TABLE %s in EXCLUSIVE MODE" % (table,))
|