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
|
# -*- coding: utf-8 -*-
# Copyright 2014 matrix.org
#
# 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 twisted.internet import defer
from synapse.api.constants import Membership
from synapse.types import StreamToken
class RoomEventSource(object):
SIGNAL_NAME = "RoomEventSource"
def __init__(self, hs):
self.store = hs.get_datastore()
@defer.inlineCallbacks
def get_new_events_for_user(self, user, from_token, limit):
# We just ignore the key for now.
to_key = yield self.get_current_token_part()
events, end_key = yield self.store.get_room_events_stream(
user_id=user.to_string(),
from_key=from_token.events_key,
to_key=to_key,
room_id=None,
limit=limit,
)
end_token = from_token.copy_and_replace("events_key", end_key)
defer.returnValue((events, end_token))
def get_current_token_part(self):
return self.store.get_room_events_max_id()
@defer.inlineCallbacks
def get_pagination_rows(self, user, pagination_config, key):
from_token = pagination_config.from_token
to_token = pagination_config.to_token
limit = pagination_config.limit
direction = pagination_config.direction
to_key = to_token.events_key if to_token else None
events, next_key = yield self.store.paginate_room_events(
room_id=key,
from_key=from_token.events_key,
to_key=to_key,
direction=direction,
limit=limit,
with_feedback=True
)
next_token = from_token.copy_and_replace("events_key", next_key)
defer.returnValue((events, next_token))
class PresenceSource(object):
SIGNAL_NAME = "PresenceSource"
def __init__(self, hs):
self.hs = hs
self.clock = hs.get_clock()
def get_new_events_for_user(self, user, from_token, limit):
from_key = int(from_token.presence_key)
presence = self.hs.get_handlers().presence_handler
cachemap = presence._user_cachemap
# TODO(paul): limit, and filter by visibility
updates = [(k, cachemap[k]) for k in cachemap
if from_key < cachemap[k].serial]
if updates:
clock = self.clock
latest_serial = max([x[1].serial for x in updates])
data = [x[1].make_event(user=x[0], clock=clock) for x in updates]
end_token = from_token.copy_and_replace(
"presence_key", latest_serial
)
return ((data, end_token))
else:
end_token = from_token.copy_and_replace(
"presence_key", presence._user_cachemap_latest_serial
)
return (([], end_token))
def get_current_token_part(self):
presence = self.hs.get_handlers().presence_handler
return presence._user_cachemap_latest_serial
def get_pagination_rows(self, user, pagination_config, key):
# TODO (erikj): Does this make sense? Ordering?
from_token = pagination_config.from_token
to_token = pagination_config.to_token
from_key = int(from_token.presence_key)
if to_token:
to_key = int(to_token.presence_key)
else:
to_key = -1
presence = self.hs.get_handlers().presence_handler
cachemap = presence._user_cachemap
# TODO(paul): limit, and filter by visibility
updates = [(k, cachemap[k]) for k in cachemap
if to_key < cachemap[k].serial < from_key]
if updates:
clock = self.clock
earliest_serial = max([x[1].serial for x in updates])
data = [x[1].make_event(user=x[0], clock=clock) for x in updates]
if to_token:
next_token = to_token
else:
next_token = from_token
next_token = next_token.copy_and_replace(
"presence_key", earliest_serial
)
return ((data, next_token))
else:
if not to_token:
to_token = from_token.copy_and_replace(
"presence_key", 0
)
return (([], to_token))
class EventSources(object):
SOURCE_TYPES = [
RoomEventSource,
PresenceSource,
]
def __init__(self, hs):
self.sources = [t(hs) for t in EventSources.SOURCE_TYPES]
@staticmethod
def create_token(events_key, presence_key):
return StreamToken(events_key=events_key, presence_key=presence_key)
@defer.inlineCallbacks
def get_current_token(self):
events_key = yield self.sources[0].get_current_token_part()
presence_key = yield self.sources[1].get_current_token_part()
token = EventSources.create_token(events_key, presence_key)
defer.returnValue(token)
class StreamSource(object):
def get_new_events_for_user(self, user, from_token, limit):
raise NotImplementedError("get_new_events_for_user")
def get_current_token_part(self):
raise NotImplementedError("get_current_token_part")
def get_pagination_rows(self, user, pagination_config, key):
raise NotImplementedError("get_rows")
|
