mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-10-01 11:49:51 -04:00
100 lines
2.6 KiB
Python
100 lines
2.6 KiB
Python
# -*- coding: utf-8 -*-
|
|
# 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.
|
|
import abc
|
|
from typing import Generic, TypeVar
|
|
|
|
from synapse.storage.types import Connection
|
|
|
|
|
|
class IncorrectDatabaseSetup(RuntimeError):
|
|
pass
|
|
|
|
|
|
ConnectionType = TypeVar("ConnectionType", bound=Connection)
|
|
|
|
|
|
class BaseDatabaseEngine(Generic[ConnectionType], metaclass=abc.ABCMeta):
|
|
def __init__(self, module, database_config: dict):
|
|
self.module = module
|
|
|
|
@property
|
|
@abc.abstractmethod
|
|
def single_threaded(self) -> bool:
|
|
...
|
|
|
|
@property
|
|
@abc.abstractmethod
|
|
def can_native_upsert(self) -> bool:
|
|
"""
|
|
Do we support native UPSERTs?
|
|
"""
|
|
...
|
|
|
|
@property
|
|
@abc.abstractmethod
|
|
def supports_tuple_comparison(self) -> bool:
|
|
"""
|
|
Do we support comparing tuples, i.e. `(a, b) > (c, d)`?
|
|
"""
|
|
...
|
|
|
|
@property
|
|
@abc.abstractmethod
|
|
def supports_using_any_list(self) -> bool:
|
|
"""
|
|
Do we support using `a = ANY(?)` and passing a list
|
|
"""
|
|
...
|
|
|
|
@abc.abstractmethod
|
|
def check_database(
|
|
self, db_conn: ConnectionType, allow_outdated_version: bool = False
|
|
) -> None:
|
|
...
|
|
|
|
@abc.abstractmethod
|
|
def check_new_database(self, txn) -> None:
|
|
"""Gets called when setting up a brand new database. This allows us to
|
|
apply stricter checks on new databases versus existing database.
|
|
"""
|
|
...
|
|
|
|
@abc.abstractmethod
|
|
def convert_param_style(self, sql: str) -> str:
|
|
...
|
|
|
|
@abc.abstractmethod
|
|
def on_new_connection(self, db_conn: ConnectionType) -> None:
|
|
...
|
|
|
|
@abc.abstractmethod
|
|
def is_deadlock(self, error: Exception) -> bool:
|
|
...
|
|
|
|
@abc.abstractmethod
|
|
def is_connection_closed(self, conn: ConnectionType) -> bool:
|
|
...
|
|
|
|
@abc.abstractmethod
|
|
def lock_table(self, txn, table: str) -> None:
|
|
...
|
|
|
|
@property
|
|
@abc.abstractmethod
|
|
def server_version(self) -> str:
|
|
"""Gets a string giving the server version. For example: '3.22.0'
|
|
"""
|
|
...
|