forked-synapse/synapse/storage/engines/__init__.py

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# -*- coding: utf-8 -*-
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# Copyright 2015, 2016 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.
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import importlib
import platform
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from ._base import IncorrectDatabaseSetup
from .postgres import PostgresEngine
from .sqlite import Sqlite3Engine
SUPPORTED_MODULE = {"sqlite3": Sqlite3Engine, "psycopg2": PostgresEngine}
def create_engine(database_config):
name = database_config["name"]
engine_class = SUPPORTED_MODULE.get(name, None)
if engine_class:
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# pypy requires psycopg2cffi rather than psycopg2
if name == "psycopg2" and platform.python_implementation() == "PyPy":
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name = "psycopg2cffi"
module = importlib.import_module(name)
return engine_class(module, database_config)
raise RuntimeError("Unsupported database engine '%s'" % (name,))
__all__ = ["create_engine", "IncorrectDatabaseSetup"]