1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
# -*- coding: utf-8 -*-
# Copyright 2014-2016 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 collections import namedtuple
from typing import Iterable, List, Optional
from synapse.api.errors import SynapseError
from synapse.storage._base import SQLBaseStore
from synapse.types import RoomAlias
from synapse.util.caches.descriptors import cached
RoomAliasMapping = namedtuple("RoomAliasMapping", ("room_id", "room_alias", "servers"))
class DirectoryWorkerStore(SQLBaseStore):
async def get_association_from_room_alias(
self, room_alias: RoomAlias
) -> Optional[RoomAliasMapping]:
"""Gets the room_id and server list for a given room_alias
Args:
room_alias: The alias to translate to an ID.
Returns:
The room alias mapping or None if no association can be found.
"""
room_id = await self.db_pool.simple_select_one_onecol(
"room_aliases",
{"room_alias": room_alias.to_string()},
"room_id",
allow_none=True,
desc="get_association_from_room_alias",
)
if not room_id:
return None
servers = await self.db_pool.simple_select_onecol(
"room_alias_servers",
{"room_alias": room_alias.to_string()},
"server",
desc="get_association_from_room_alias",
)
if not servers:
return None
return RoomAliasMapping(room_id, room_alias.to_string(), servers)
async def get_room_alias_creator(self, room_alias: str) -> str:
return await self.db_pool.simple_select_one_onecol(
table="room_aliases",
keyvalues={"room_alias": room_alias},
retcol="creator",
desc="get_room_alias_creator",
)
@cached(max_entries=5000)
async def get_aliases_for_room(self, room_id: str) -> List[str]:
return await self.db_pool.simple_select_onecol(
"room_aliases",
{"room_id": room_id},
"room_alias",
desc="get_aliases_for_room",
)
class DirectoryStore(DirectoryWorkerStore):
async def create_room_alias_association(
self,
room_alias: RoomAlias,
room_id: str,
servers: Iterable[str],
creator: Optional[str] = None,
) -> None:
"""Creates an association between a room alias and room_id/servers
Args:
room_alias: The alias to create.
room_id: The target of the alias.
servers: A list of servers through which it may be possible to join the room
creator: Optional user_id of creator.
"""
def alias_txn(txn):
self.db_pool.simple_insert_txn(
txn,
"room_aliases",
{
"room_alias": room_alias.to_string(),
"room_id": room_id,
"creator": creator,
},
)
self.db_pool.simple_insert_many_txn(
txn,
table="room_alias_servers",
values=[
{"room_alias": room_alias.to_string(), "server": server}
for server in servers
],
)
self._invalidate_cache_and_stream(
txn, self.get_aliases_for_room, (room_id,)
)
try:
await self.db_pool.runInteraction(
"create_room_alias_association", alias_txn
)
except self.database_engine.module.IntegrityError:
raise SynapseError(
409, "Room alias %s already exists" % room_alias.to_string()
)
async def delete_room_alias(self, room_alias: RoomAlias) -> str:
room_id = await self.db_pool.runInteraction(
"delete_room_alias", self._delete_room_alias_txn, room_alias
)
return room_id
def _delete_room_alias_txn(self, txn, room_alias: RoomAlias) -> str:
txn.execute(
"SELECT room_id FROM room_aliases WHERE room_alias = ?",
(room_alias.to_string(),),
)
res = txn.fetchone()
if res:
room_id = res[0]
else:
return None
txn.execute(
"DELETE FROM room_aliases WHERE room_alias = ?", (room_alias.to_string(),)
)
txn.execute(
"DELETE FROM room_alias_servers WHERE room_alias = ?",
(room_alias.to_string(),),
)
self._invalidate_cache_and_stream(txn, self.get_aliases_for_room, (room_id,))
return room_id
async def update_aliases_for_room(
self,
old_room_id: str,
new_room_id: str,
creator: Optional[str] = None,
) -> None:
"""Repoint all of the aliases for a given room, to a different room.
Args:
old_room_id:
new_room_id:
creator: The user to record as the creator of the new mapping.
If None, the creator will be left unchanged.
"""
def _update_aliases_for_room_txn(txn):
update_creator_sql = ""
sql_params = (new_room_id, old_room_id)
if creator:
update_creator_sql = ", creator = ?"
sql_params = (new_room_id, creator, old_room_id)
sql = "UPDATE room_aliases SET room_id = ? %s WHERE room_id = ?" % (
update_creator_sql,
)
txn.execute(sql, sql_params)
self._invalidate_cache_and_stream(
txn, self.get_aliases_for_room, (old_room_id,)
)
self._invalidate_cache_and_stream(
txn, self.get_aliases_for_room, (new_room_id,)
)
await self.db_pool.runInteraction(
"_update_aliases_for_room_txn", _update_aliases_for_room_txn
)
|
