124 lines
4.2 KiB
Python
124 lines
4.2 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2015, 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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import abc
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from typing import TYPE_CHECKING, Any, Dict, Optional
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import attr
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from synapse.types import JsonDict, RoomStreamToken
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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@attr.s(slots=True)
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class PusherConfig:
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"""Parameters necessary to configure a pusher."""
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id = attr.ib(type=Optional[str])
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user_name = attr.ib(type=str)
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access_token = attr.ib(type=Optional[int])
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profile_tag = attr.ib(type=str)
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kind = attr.ib(type=str)
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app_id = attr.ib(type=str)
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app_display_name = attr.ib(type=str)
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device_display_name = attr.ib(type=str)
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pushkey = attr.ib(type=str)
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ts = attr.ib(type=int)
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lang = attr.ib(type=Optional[str])
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data = attr.ib(type=Optional[JsonDict])
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last_stream_ordering = attr.ib(type=int)
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last_success = attr.ib(type=Optional[int])
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failing_since = attr.ib(type=Optional[int])
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def as_dict(self) -> Dict[str, Any]:
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"""Information that can be retrieved about a pusher after creation."""
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return {
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"app_display_name": self.app_display_name,
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"app_id": self.app_id,
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"data": self.data,
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"device_display_name": self.device_display_name,
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"kind": self.kind,
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"lang": self.lang,
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"profile_tag": self.profile_tag,
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"pushkey": self.pushkey,
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}
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@attr.s(slots=True)
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class ThrottleParams:
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"""Parameters for controlling the rate of sending pushes via email."""
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last_sent_ts = attr.ib(type=int)
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throttle_ms = attr.ib(type=int)
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class Pusher(metaclass=abc.ABCMeta):
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def __init__(self, hs: "HomeServer", pusher_config: PusherConfig):
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self.hs = hs
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self.store = self.hs.get_datastore()
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self.clock = self.hs.get_clock()
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self.pusher_id = pusher_config.id
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self.user_id = pusher_config.user_name
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self.app_id = pusher_config.app_id
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self.pushkey = pusher_config.pushkey
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self.last_stream_ordering = pusher_config.last_stream_ordering
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# This is the highest stream ordering we know it's safe to process.
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# When new events arrive, we'll be given a window of new events: we
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# should honour this rather than just looking for anything higher
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# because of potential out-of-order event serialisation.
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self.max_stream_ordering = self.store.get_room_max_stream_ordering()
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def on_new_notifications(self, max_token: RoomStreamToken) -> None:
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# We just use the minimum stream ordering and ignore the vector clock
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# component. This is safe to do as long as we *always* ignore the vector
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# clock components.
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max_stream_ordering = max_token.stream
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self.max_stream_ordering = max(max_stream_ordering, self.max_stream_ordering)
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self._start_processing()
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@abc.abstractmethod
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def _start_processing(self):
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"""Start processing push notifications."""
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raise NotImplementedError()
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@abc.abstractmethod
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def on_new_receipts(self, min_stream_id: int, max_stream_id: int) -> None:
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raise NotImplementedError()
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@abc.abstractmethod
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def on_started(self, have_notifs: bool) -> None:
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"""Called when this pusher has been started.
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Args:
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should_check_for_notifs: Whether we should immediately
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check for push to send. Set to False only if it's known there
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is nothing to send
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"""
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raise NotImplementedError()
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@abc.abstractmethod
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def on_stop(self) -> None:
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raise NotImplementedError()
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class PusherConfigException(Exception):
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"""An error occurred when creating a pusher."""
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