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
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
# -*- coding: utf-8 -*-
# Copyright 2016 OpenMarket Ltd
# Copyright 2018 New Vector 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 logging
from synapse.api.constants import EventTypes
from synapse.storage import DataStore
from synapse.storage.event_federation import EventFederationStore
from synapse.storage.event_push_actions import EventPushActionsStore
from synapse.storage.events import EventsWorkerStore
from synapse.storage.roommember import RoomMemberStore
from synapse.storage.state import StateGroupWorkerStore
from synapse.storage.stream import StreamStore
from synapse.storage.signatures import SignatureStore
from synapse.util.caches.stream_change_cache import StreamChangeCache
from ._base import BaseSlavedStore
from ._slaved_id_tracker import SlavedIdTracker
logger = logging.getLogger(__name__)
# So, um, we want to borrow a load of functions intended for reading from
# a DataStore, but we don't want to take functions that either write to the
# DataStore or are cached and don't have cache invalidation logic.
#
# Rather than write duplicate versions of those functions, or lift them to
# a common base class, we going to grab the underlying __func__ object from
# the method descriptor on the DataStore and chuck them into our class.
class SlavedEventStore(EventsWorkerStore, StateGroupWorkerStore, BaseSlavedStore):
def __init__(self, db_conn, hs):
super(SlavedEventStore, self).__init__(db_conn, hs)
self._stream_id_gen = SlavedIdTracker(
db_conn, "events", "stream_ordering",
)
self._backfill_id_gen = SlavedIdTracker(
db_conn, "events", "stream_ordering", step=-1
)
events_max = self._stream_id_gen.get_current_token()
event_cache_prefill, min_event_val = self._get_cache_dict(
db_conn, "events",
entity_column="room_id",
stream_column="stream_ordering",
max_value=events_max,
)
self._events_stream_cache = StreamChangeCache(
"EventsRoomStreamChangeCache", min_event_val,
prefilled_cache=event_cache_prefill,
)
self._membership_stream_cache = StreamChangeCache(
"MembershipStreamChangeCache", events_max,
)
self.stream_ordering_month_ago = 0
self._stream_order_on_start = self.get_room_max_stream_ordering()
# Cached functions can't be accessed through a class instance so we need
# to reach inside the __dict__ to extract them.
get_rooms_for_user = RoomMemberStore.__dict__["get_rooms_for_user"]
get_users_in_room = RoomMemberStore.__dict__["get_users_in_room"]
get_hosts_in_room = RoomMemberStore.__dict__["get_hosts_in_room"]
get_users_who_share_room_with_user = (
RoomMemberStore.__dict__["get_users_who_share_room_with_user"]
)
get_latest_event_ids_in_room = EventFederationStore.__dict__[
"get_latest_event_ids_in_room"
]
get_invited_rooms_for_user = RoomMemberStore.__dict__[
"get_invited_rooms_for_user"
]
get_unread_event_push_actions_by_room_for_user = (
EventPushActionsStore.__dict__["get_unread_event_push_actions_by_room_for_user"]
)
_get_unread_counts_by_receipt_txn = (
DataStore._get_unread_counts_by_receipt_txn.__func__
)
_get_unread_counts_by_pos_txn = (
DataStore._get_unread_counts_by_pos_txn.__func__
)
get_recent_event_ids_for_room = (
StreamStore.__dict__["get_recent_event_ids_for_room"]
)
_get_joined_hosts_cache = RoomMemberStore.__dict__["_get_joined_hosts_cache"]
has_room_changed_since = DataStore.has_room_changed_since.__func__
get_unread_push_actions_for_user_in_range_for_http = (
DataStore.get_unread_push_actions_for_user_in_range_for_http.__func__
)
get_unread_push_actions_for_user_in_range_for_email = (
DataStore.get_unread_push_actions_for_user_in_range_for_email.__func__
)
get_push_action_users_in_range = (
DataStore.get_push_action_users_in_range.__func__
)
get_rooms_for_user_where_membership_is = (
DataStore.get_rooms_for_user_where_membership_is.__func__
)
get_membership_changes_for_user = (
DataStore.get_membership_changes_for_user.__func__
)
get_room_events_max_id = DataStore.get_room_events_max_id.__func__
get_room_events_stream_for_room = (
DataStore.get_room_events_stream_for_room.__func__
)
get_events_around = DataStore.get_events_around.__func__
get_joined_users_from_state = DataStore.get_joined_users_from_state.__func__
get_joined_users_from_context = DataStore.get_joined_users_from_context.__func__
_get_joined_users_from_context = (
RoomMemberStore.__dict__["_get_joined_users_from_context"]
)
get_joined_hosts = DataStore.get_joined_hosts.__func__
_get_joined_hosts = RoomMemberStore.__dict__["_get_joined_hosts"]
get_recent_events_for_room = DataStore.get_recent_events_for_room.__func__
get_room_events_stream_for_rooms = (
DataStore.get_room_events_stream_for_rooms.__func__
)
is_host_joined = RoomMemberStore.__dict__["is_host_joined"]
get_stream_token_for_event = DataStore.get_stream_token_for_event.__func__
_set_before_and_after = staticmethod(DataStore._set_before_and_after)
_get_rooms_for_user_where_membership_is_txn = (
DataStore._get_rooms_for_user_where_membership_is_txn.__func__
)
_get_events_around_txn = DataStore._get_events_around_txn.__func__
get_backfill_events = DataStore.get_backfill_events.__func__
_get_backfill_events = DataStore._get_backfill_events.__func__
get_missing_events = DataStore.get_missing_events.__func__
_get_missing_events = DataStore._get_missing_events.__func__
get_auth_chain = DataStore.get_auth_chain.__func__
get_auth_chain_ids = DataStore.get_auth_chain_ids.__func__
_get_auth_chain_ids_txn = DataStore._get_auth_chain_ids_txn.__func__
get_room_max_stream_ordering = DataStore.get_room_max_stream_ordering.__func__
get_forward_extremeties_for_room = (
DataStore.get_forward_extremeties_for_room.__func__
)
_get_forward_extremeties_for_room = (
EventFederationStore.__dict__["_get_forward_extremeties_for_room"]
)
get_all_new_events_stream = DataStore.get_all_new_events_stream.__func__
get_federation_out_pos = DataStore.get_federation_out_pos.__func__
update_federation_out_pos = DataStore.update_federation_out_pos.__func__
get_latest_event_ids_and_hashes_in_room = (
DataStore.get_latest_event_ids_and_hashes_in_room.__func__
)
_get_latest_event_ids_and_hashes_in_room = (
DataStore._get_latest_event_ids_and_hashes_in_room.__func__
)
_get_event_reference_hashes_txn = (
DataStore._get_event_reference_hashes_txn.__func__
)
add_event_hashes = (
DataStore.add_event_hashes.__func__
)
get_event_reference_hashes = (
SignatureStore.__dict__["get_event_reference_hashes"]
)
get_event_reference_hash = (
SignatureStore.__dict__["get_event_reference_hash"]
)
def stream_positions(self):
result = super(SlavedEventStore, self).stream_positions()
result["events"] = self._stream_id_gen.get_current_token()
result["backfill"] = -self._backfill_id_gen.get_current_token()
return result
def process_replication_rows(self, stream_name, token, rows):
if stream_name == "events":
self._stream_id_gen.advance(token)
for row in rows:
self.invalidate_caches_for_event(
token, row.event_id, row.room_id, row.type, row.state_key,
row.redacts,
backfilled=False,
)
elif stream_name == "backfill":
self._backfill_id_gen.advance(-token)
for row in rows:
self.invalidate_caches_for_event(
-token, row.event_id, row.room_id, row.type, row.state_key,
row.redacts,
backfilled=True,
)
return super(SlavedEventStore, self).process_replication_rows(
stream_name, token, rows
)
def invalidate_caches_for_event(self, stream_ordering, event_id, room_id,
etype, state_key, redacts, backfilled):
self._invalidate_get_event_cache(event_id)
self.get_latest_event_ids_in_room.invalidate((room_id,))
self.get_unread_event_push_actions_by_room_for_user.invalidate_many(
(room_id,)
)
if not backfilled:
self._events_stream_cache.entity_has_changed(
room_id, stream_ordering
)
if redacts:
self._invalidate_get_event_cache(redacts)
if etype == EventTypes.Member:
self._membership_stream_cache.entity_has_changed(
state_key, stream_ordering
)
self.get_invited_rooms_for_user.invalidate((state_key,))
|
