109 lines
3.8 KiB
Python
109 lines
3.8 KiB
Python
# Copyright 2014-2016 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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"""This module contains REST servlets to do with event streaming, /events."""
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import logging
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from typing import TYPE_CHECKING, Dict, List, Tuple, Union
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from synapse.api.errors import SynapseError
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from synapse.events.utils import SerializeEventConfig
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from synapse.http.server import HttpServer
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from synapse.http.servlet import RestServlet, parse_string
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from synapse.http.site import SynapseRequest
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from synapse.rest.client._base import client_patterns
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from synapse.streams.config import PaginationConfig
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from synapse.types import JsonDict
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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logger = logging.getLogger(__name__)
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class EventStreamRestServlet(RestServlet):
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PATTERNS = client_patterns("/events$", v1=True)
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CATEGORY = "Sync requests"
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DEFAULT_LONGPOLL_TIME_MS = 30000
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def __init__(self, hs: "HomeServer"):
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super().__init__()
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self.event_stream_handler = hs.get_event_stream_handler()
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self.auth = hs.get_auth()
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self.store = hs.get_datastores().main
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async def on_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request, allow_guest=True)
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args: Dict[bytes, List[bytes]] = request.args # type: ignore
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if requester.is_guest:
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if b"room_id" not in args:
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raise SynapseError(400, "Guest users must specify room_id param")
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room_id = parse_string(request, "room_id")
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pagin_config = await PaginationConfig.from_request(
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self.store, request, default_limit=10
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)
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timeout = EventStreamRestServlet.DEFAULT_LONGPOLL_TIME_MS
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if b"timeout" in args:
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try:
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timeout = int(args[b"timeout"][0])
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except ValueError:
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raise SynapseError(400, "timeout must be in milliseconds.")
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as_client_event = b"raw" not in args
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chunk = await self.event_stream_handler.get_stream(
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requester,
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pagin_config,
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timeout=timeout,
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as_client_event=as_client_event,
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affect_presence=(not requester.is_guest),
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room_id=room_id,
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)
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return 200, chunk
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class EventRestServlet(RestServlet):
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PATTERNS = client_patterns("/events/(?P<event_id>[^/]*)$", v1=True)
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CATEGORY = "Client API requests"
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def __init__(self, hs: "HomeServer"):
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super().__init__()
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self.clock = hs.get_clock()
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self.event_handler = hs.get_event_handler()
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self.auth = hs.get_auth()
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self._event_serializer = hs.get_event_client_serializer()
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async def on_GET(
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self, request: SynapseRequest, event_id: str
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) -> Tuple[int, Union[str, JsonDict]]:
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requester = await self.auth.get_user_by_req(request)
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event = await self.event_handler.get_event(requester.user, None, event_id)
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if event:
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result = self._event_serializer.serialize_event(
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event,
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self.clock.time_msec(),
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config=SerializeEventConfig(requester=requester),
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)
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return 200, result
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else:
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return 404, "Event not found."
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def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
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EventStreamRestServlet(hs).register(http_server)
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EventRestServlet(hs).register(http_server)
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