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
|
# 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 TYPE_CHECKING, Any, Dict, Optional
import attr
from synapse.types import JsonDict, RoomStreamToken
if TYPE_CHECKING:
from synapse.server import HomeServer
@attr.s(slots=True)
class PusherConfig:
"""Parameters necessary to configure a pusher."""
id = attr.ib(type=Optional[str])
user_name = attr.ib(type=str)
access_token = attr.ib(type=Optional[int])
profile_tag = attr.ib(type=str)
kind = attr.ib(type=str)
app_id = attr.ib(type=str)
app_display_name = attr.ib(type=str)
device_display_name = attr.ib(type=str)
pushkey = attr.ib(type=str)
ts = attr.ib(type=int)
lang = attr.ib(type=Optional[str])
data = attr.ib(type=Optional[JsonDict])
last_stream_ordering = attr.ib(type=int)
last_success = attr.ib(type=Optional[int])
failing_since = attr.ib(type=Optional[int])
def as_dict(self) -> Dict[str, Any]:
"""Information that can be retrieved about a pusher after creation."""
return {
"app_display_name": self.app_display_name,
"app_id": self.app_id,
"data": self.data,
"device_display_name": self.device_display_name,
"kind": self.kind,
"lang": self.lang,
"profile_tag": self.profile_tag,
"pushkey": self.pushkey,
}
@attr.s(slots=True)
class ThrottleParams:
"""Parameters for controlling the rate of sending pushes via email."""
last_sent_ts = attr.ib(type=int)
throttle_ms = attr.ib(type=int)
class Pusher(metaclass=abc.ABCMeta):
def __init__(self, hs: "HomeServer", pusher_config: PusherConfig):
self.hs = hs
self.store = self.hs.get_datastore()
self.clock = self.hs.get_clock()
self.pusher_id = pusher_config.id
self.user_id = pusher_config.user_name
self.app_id = pusher_config.app_id
self.pushkey = pusher_config.pushkey
self.last_stream_ordering = pusher_config.last_stream_ordering
# This is the highest stream ordering we know it's safe to process.
# When new events arrive, we'll be given a window of new events: we
# should honour this rather than just looking for anything higher
# because of potential out-of-order event serialisation.
self.max_stream_ordering = self.store.get_room_max_stream_ordering()
def on_new_notifications(self, max_token: RoomStreamToken) -> None:
# We just use the minimum stream ordering and ignore the vector clock
# component. This is safe to do as long as we *always* ignore the vector
# clock components.
max_stream_ordering = max_token.stream
self.max_stream_ordering = max(max_stream_ordering, self.max_stream_ordering)
self._start_processing()
@abc.abstractmethod
def _start_processing(self):
"""Start processing push notifications."""
raise NotImplementedError()
@abc.abstractmethod
def on_new_receipts(self, min_stream_id: int, max_stream_id: int) -> None:
raise NotImplementedError()
@abc.abstractmethod
def on_started(self, have_notifs: bool) -> None:
"""Called when this pusher has been started.
Args:
should_check_for_notifs: Whether we should immediately
check for push to send. Set to False only if it's known there
is nothing to send
"""
raise NotImplementedError()
@abc.abstractmethod
def on_stop(self) -> None:
raise NotImplementedError()
class PusherConfigException(Exception):
"""An error occurred when creating a pusher."""
|
