mirror of
https://mau.dev/maunium/synapse.git
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195 lines
6.3 KiB
Python
195 lines
6.3 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from collections import namedtuple
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from typing import Iterable, List, Optional
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from synapse.api.errors import SynapseError
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from synapse.storage._base import SQLBaseStore
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from synapse.types import RoomAlias
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from synapse.util.caches.descriptors import cached
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RoomAliasMapping = namedtuple("RoomAliasMapping", ("room_id", "room_alias", "servers"))
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class DirectoryWorkerStore(SQLBaseStore):
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async def get_association_from_room_alias(
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self, room_alias: RoomAlias
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) -> Optional[RoomAliasMapping]:
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"""Gets the room_id and server list for a given room_alias
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Args:
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room_alias: The alias to translate to an ID.
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Returns:
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The room alias mapping or None if no association can be found.
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"""
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room_id = await self.db_pool.simple_select_one_onecol(
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"room_aliases",
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{"room_alias": room_alias.to_string()},
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"room_id",
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allow_none=True,
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desc="get_association_from_room_alias",
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)
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if not room_id:
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return None
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servers = await self.db_pool.simple_select_onecol(
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"room_alias_servers",
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{"room_alias": room_alias.to_string()},
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"server",
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desc="get_association_from_room_alias",
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)
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if not servers:
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return None
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return RoomAliasMapping(room_id, room_alias.to_string(), servers)
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async def get_room_alias_creator(self, room_alias: str) -> str:
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return await self.db_pool.simple_select_one_onecol(
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table="room_aliases",
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keyvalues={"room_alias": room_alias},
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retcol="creator",
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desc="get_room_alias_creator",
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)
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@cached(max_entries=5000)
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async def get_aliases_for_room(self, room_id: str) -> List[str]:
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return await self.db_pool.simple_select_onecol(
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"room_aliases",
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{"room_id": room_id},
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"room_alias",
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desc="get_aliases_for_room",
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)
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class DirectoryStore(DirectoryWorkerStore):
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async def create_room_alias_association(
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self,
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room_alias: RoomAlias,
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room_id: str,
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servers: Iterable[str],
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creator: Optional[str] = None,
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) -> None:
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""" Creates an association between a room alias and room_id/servers
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Args:
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room_alias: The alias to create.
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room_id: The target of the alias.
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servers: A list of servers through which it may be possible to join the room
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creator: Optional user_id of creator.
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"""
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def alias_txn(txn):
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self.db_pool.simple_insert_txn(
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txn,
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"room_aliases",
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{
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"room_alias": room_alias.to_string(),
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"room_id": room_id,
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"creator": creator,
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},
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)
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self.db_pool.simple_insert_many_txn(
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txn,
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table="room_alias_servers",
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values=[
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{"room_alias": room_alias.to_string(), "server": server}
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for server in servers
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],
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)
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self._invalidate_cache_and_stream(
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txn, self.get_aliases_for_room, (room_id,)
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)
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try:
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await self.db_pool.runInteraction(
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"create_room_alias_association", alias_txn
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)
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except self.database_engine.module.IntegrityError:
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raise SynapseError(
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409, "Room alias %s already exists" % room_alias.to_string()
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)
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async def delete_room_alias(self, room_alias: RoomAlias) -> str:
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room_id = await self.db_pool.runInteraction(
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"delete_room_alias", self._delete_room_alias_txn, room_alias
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)
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return room_id
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def _delete_room_alias_txn(self, txn, room_alias: RoomAlias) -> str:
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txn.execute(
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"SELECT room_id FROM room_aliases WHERE room_alias = ?",
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(room_alias.to_string(),),
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)
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res = txn.fetchone()
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if res:
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room_id = res[0]
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else:
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return None
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txn.execute(
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"DELETE FROM room_aliases WHERE room_alias = ?", (room_alias.to_string(),)
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)
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txn.execute(
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"DELETE FROM room_alias_servers WHERE room_alias = ?",
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(room_alias.to_string(),),
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)
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self._invalidate_cache_and_stream(txn, self.get_aliases_for_room, (room_id,))
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return room_id
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async def update_aliases_for_room(
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self, old_room_id: str, new_room_id: str, creator: Optional[str] = None,
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) -> None:
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"""Repoint all of the aliases for a given room, to a different room.
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Args:
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old_room_id:
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new_room_id:
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creator: The user to record as the creator of the new mapping.
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If None, the creator will be left unchanged.
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"""
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def _update_aliases_for_room_txn(txn):
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update_creator_sql = ""
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sql_params = (new_room_id, old_room_id)
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if creator:
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update_creator_sql = ", creator = ?"
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sql_params = (new_room_id, creator, old_room_id)
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sql = "UPDATE room_aliases SET room_id = ? %s WHERE room_id = ?" % (
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update_creator_sql,
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)
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txn.execute(sql, sql_params)
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self._invalidate_cache_and_stream(
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txn, self.get_aliases_for_room, (old_room_id,)
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)
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self._invalidate_cache_and_stream(
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txn, self.get_aliases_for_room, (new_room_id,)
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)
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await self.db_pool.runInteraction(
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"_update_aliases_for_room_txn", _update_aliases_for_room_txn
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)
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