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# -*- coding: utf-8 -*-
# Copyright 2018 New Vector 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.
from twisted.internet import defer
from synapse.api.errors import SynapseError, MatrixCodeMessageException
from synapse.events import FrozenEvent
from synapse.events.snapshot import EventContext
from synapse.http.servlet import RestServlet, parse_json_object_from_request
from synapse.util.metrics import Measure
from synapse.types import Requester
import logging
import re
logger = logging.getLogger(__name__)
@defer.inlineCallbacks
def send_event_to_master(client, host, port, requester, event, context):
"""Send event to be handled on the master
Args:
client (SimpleHttpClient)
host (str): host of master
port (int): port on master listening for HTTP replication
requester (Requester)
event (FrozenEvent)
context (EventContext)
"""
uri = "http://%s:%s/_synapse/replication/send_event" % (host, port,)
payload = {
"event": event.get_pdu_json(),
"internal_metadata": event.internal_metadata.get_dict(),
"rejected_reason": event.rejected_reason,
"context": context.serialize(event),
"requester": requester.serialize(),
}
try:
result = yield client.post_json_get_json(uri, payload)
except MatrixCodeMessageException as e:
# We convert to SynapseError as we know that it was a SynapseError
# on the master process that we should send to the client. (And
# importantly, not stack traces everywhere)
raise SynapseError(e.code, e.msg, e.errcode)
defer.returnValue(result)
class ReplicationSendEventRestServlet(RestServlet):
"""Handles events newly created on workers, including persisting and
notifying.
The API looks like:
POST /_synapse/replication/send_event
{
"event": { .. serialized event .. },
"internal_metadata": { .. serialized internal_metadata .. },
"rejected_reason": .., // The event.rejected_reason field
"context": { .. serialized event context .. },
"requester": { .. serialized requester .. },
}
"""
PATTERNS = [re.compile("^/_synapse/replication/send_event$")]
def __init__(self, hs):
super(ReplicationSendEventRestServlet, self).__init__()
self.event_creation_handler = hs.get_event_creation_handler()
self.store = hs.get_datastore()
self.clock = hs.get_clock()
@defer.inlineCallbacks
def on_POST(self, request):
with Measure(self.clock, "repl_send_event_parse"):
content = parse_json_object_from_request(request)
event_dict = content["event"]
internal_metadata = content["internal_metadata"]
rejected_reason = content["rejected_reason"]
event = FrozenEvent(event_dict, internal_metadata, rejected_reason)
requester = Requester.deserialize(self.store, content["requester"])
context = yield EventContext.deserialize(self.store, content["context"])
if requester.user:
request.authenticated_entity = requester.user.to_string()
logger.info(
"Got event to send with ID: %s into room: %s",
event.event_id, event.room_id,
)
yield self.event_creation_handler.persist_and_notify_client_event(
requester, event, context,
)
defer.returnValue((200, {}))
def register_servlets(hs, http_server):
ReplicationSendEventRestServlet(hs).register(http_server)
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