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# Copyright 2014-2016 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.
"""This module contains REST servlets to do with event streaming, /events."""
import logging
from synapse.api.errors import SynapseError
from synapse.http.servlet import RestServlet
from synapse.rest.client._base import client_patterns
from synapse.streams.config import PaginationConfig
logger = logging.getLogger(__name__)
class EventStreamRestServlet(RestServlet):
PATTERNS = client_patterns("/events$", v1=True)
DEFAULT_LONGPOLL_TIME_MS = 30000
def __init__(self, hs):
super().__init__()
self.event_stream_handler = hs.get_event_stream_handler()
self.auth = hs.get_auth()
self.store = hs.get_datastore()
async def on_GET(self, request):
requester = await self.auth.get_user_by_req(request, allow_guest=True)
is_guest = requester.is_guest
room_id = None
if is_guest:
if b"room_id" not in request.args:
raise SynapseError(400, "Guest users must specify room_id param")
if b"room_id" in request.args:
room_id = request.args[b"room_id"][0].decode("ascii")
pagin_config = await PaginationConfig.from_request(self.store, request)
timeout = EventStreamRestServlet.DEFAULT_LONGPOLL_TIME_MS
if b"timeout" in request.args:
try:
timeout = int(request.args[b"timeout"][0])
except ValueError:
raise SynapseError(400, "timeout must be in milliseconds.")
as_client_event = b"raw" not in request.args
chunk = await self.event_stream_handler.get_stream(
requester.user.to_string(),
pagin_config,
timeout=timeout,
as_client_event=as_client_event,
affect_presence=(not is_guest),
room_id=room_id,
is_guest=is_guest,
)
return 200, chunk
class EventRestServlet(RestServlet):
PATTERNS = client_patterns("/events/(?P<event_id>[^/]*)$", v1=True)
def __init__(self, hs):
super().__init__()
self.clock = hs.get_clock()
self.event_handler = hs.get_event_handler()
self.auth = hs.get_auth()
self._event_serializer = hs.get_event_client_serializer()
async def on_GET(self, request, event_id):
requester = await self.auth.get_user_by_req(request)
event = await self.event_handler.get_event(requester.user, None, event_id)
time_now = self.clock.time_msec()
if event:
event = await self._event_serializer.serialize_event(event, time_now)
return 200, event
else:
return 404, "Event not found."
def register_servlets(hs, http_server):
EventStreamRestServlet(hs).register(http_server)
EventRestServlet(hs).register(http_server)
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