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# -*- coding: utf-8 -*-
# Copyright 2014, 2015 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."""
from twisted.internet import defer
from synapse.api.errors import SynapseError
from synapse.streams.config import PaginationConfig
from .base import ClientV1RestServlet, client_path_pattern
from synapse.events.utils import serialize_event
import logging
logger = logging.getLogger(__name__)
class EventStreamRestServlet(ClientV1RestServlet):
PATTERN = client_path_pattern("/events$")
DEFAULT_LONGPOLL_TIME_MS = 30000
@defer.inlineCallbacks
def on_GET(self, request):
auth_user, _, is_guest = yield self.auth.get_user_by_req(
request,
allow_guest=True
)
room_id = None
if is_guest:
if "room_id" not in request.args:
raise SynapseError(400, "Guest users must specify room_id param")
room_id = request.args["room_id"][0]
try:
handler = self.handlers.event_stream_handler
pagin_config = PaginationConfig.from_request(request)
timeout = EventStreamRestServlet.DEFAULT_LONGPOLL_TIME_MS
if "timeout" in request.args:
try:
timeout = int(request.args["timeout"][0])
except ValueError:
raise SynapseError(400, "timeout must be in milliseconds.")
as_client_event = "raw" not in request.args
chunk = yield handler.get_stream(
auth_user.to_string(), pagin_config, timeout=timeout,
as_client_event=as_client_event, affect_presence=(not is_guest),
room_id=room_id, is_guest=is_guest
)
except:
logger.exception("Event stream failed")
raise
defer.returnValue((200, chunk))
def on_OPTIONS(self, request):
return (200, {})
# TODO: Unit test gets, with and without auth, with different kinds of events.
class EventRestServlet(ClientV1RestServlet):
PATTERN = client_path_pattern("/events/(?P<event_id>[^/]*)$")
def __init__(self, hs):
super(EventRestServlet, self).__init__(hs)
self.clock = hs.get_clock()
@defer.inlineCallbacks
def on_GET(self, request, event_id):
auth_user, _, _ = yield self.auth.get_user_by_req(request)
handler = self.handlers.event_handler
event = yield handler.get_event(auth_user, event_id)
time_now = self.clock.time_msec()
if event:
defer.returnValue((200, serialize_event(event, time_now)))
else:
defer.returnValue((404, "Event not found."))
def register_servlets(hs, http_server):
EventStreamRestServlet(hs).register(http_server)
EventRestServlet(hs).register(http_server)
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