mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-12-30 05:56:11 -05:00
64 lines
2.2 KiB
Python
64 lines
2.2 KiB
Python
# 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.
|
|
from typing import Any, Mapping, NoReturn
|
|
|
|
from ._base import BaseDatabaseEngine, IncorrectDatabaseSetup
|
|
|
|
# The classes `PostgresEngine` and `Sqlite3Engine` must always be importable, because
|
|
# we use `isinstance(engine, PostgresEngine)` to write different queries for postgres
|
|
# and sqlite. But the database driver modules are both optional: they may not be
|
|
# installed. To account for this, create dummy classes on import failure so we can
|
|
# still run `isinstance()` checks.
|
|
try:
|
|
from .postgres import PostgresEngine
|
|
except ImportError:
|
|
|
|
class PostgresEngine(BaseDatabaseEngine): # type: ignore[no-redef]
|
|
def __new__(cls, *args: object, **kwargs: object) -> NoReturn: # type: ignore[misc]
|
|
raise RuntimeError(
|
|
f"Cannot create {cls.__name__} -- psycopg2 module is not installed"
|
|
)
|
|
|
|
|
|
try:
|
|
from .sqlite import Sqlite3Engine
|
|
except ImportError:
|
|
|
|
class Sqlite3Engine(BaseDatabaseEngine): # type: ignore[no-redef]
|
|
def __new__(cls, *args: object, **kwargs: object) -> NoReturn: # type: ignore[misc]
|
|
raise RuntimeError(
|
|
f"Cannot create {cls.__name__} -- sqlite3 module is not installed"
|
|
)
|
|
|
|
|
|
def create_engine(database_config: Mapping[str, Any]) -> BaseDatabaseEngine:
|
|
name = database_config["name"]
|
|
|
|
if name == "sqlite3":
|
|
return Sqlite3Engine(database_config)
|
|
|
|
if name == "psycopg2":
|
|
return PostgresEngine(database_config)
|
|
|
|
raise RuntimeError("Unsupported database engine '%s'" % (name,))
|
|
|
|
|
|
__all__ = [
|
|
"create_engine",
|
|
"BaseDatabaseEngine",
|
|
"PostgresEngine",
|
|
"Sqlite3Engine",
|
|
"IncorrectDatabaseSetup",
|
|
]
|