2018-07-25 15:32:05 +00:00
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# -*- coding: utf-8 -*-
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# Copyright 2018 New Vector 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 logging
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from twisted.internet import defer
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from synapse.api.constants import EventTypes, Membership
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from synapse.events import FrozenEvent
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from synapse.events.snapshot import EventContext
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from synapse.http.servlet import parse_json_object_from_request
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from synapse.replication.http._base import ReplicationEndpoint
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from synapse.types import UserID
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from synapse.util.logcontext import run_in_background
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from synapse.util.metrics import Measure
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logger = logging.getLogger(__name__)
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class ReplicationFederationSendEventsRestServlet(ReplicationEndpoint):
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"""Handles events newly received from federation, including persisting and
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notifying.
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The API looks like:
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POST /_synapse/replication/fed_send_events/:txn_id
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{
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"events": [{
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"event": { .. serialized event .. },
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"internal_metadata": { .. serialized internal_metadata .. },
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"rejected_reason": .., // The event.rejected_reason field
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"context": { .. serialized event context .. },
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}],
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"backfilled": false
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"""
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NAME = "fed_send_events"
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PATH_ARGS = ()
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def __init__(self, hs):
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super(ReplicationFederationSendEventsRestServlet, self).__init__(hs)
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self.store = hs.get_datastore()
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self.clock = hs.get_clock()
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self.is_mine_id = hs.is_mine_id
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self.notifier = hs.get_notifier()
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self.pusher_pool = hs.get_pusherpool()
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@staticmethod
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2018-07-26 10:44:22 +00:00
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@defer.inlineCallbacks
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2018-07-25 15:32:05 +00:00
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def _serialize_payload(store, event_and_contexts, backfilled):
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"""
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Args:
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store
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event_and_contexts (list[tuple[FrozenEvent, EventContext]])
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backfilled (bool): Whether or not the events are the result of
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backfilling
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"""
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event_payloads = []
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for event, context in event_and_contexts:
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serialized_context = yield context.serialize(event, store)
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event_payloads.append({
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"event": event.get_pdu_json(),
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"internal_metadata": event.internal_metadata.get_dict(),
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"rejected_reason": event.rejected_reason,
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"context": serialized_context,
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})
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payload = {
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"events": event_payloads,
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"backfilled": backfilled,
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}
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defer.returnValue(payload)
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@defer.inlineCallbacks
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def _handle_request(self, request):
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with Measure(self.clock, "repl_fed_send_events_parse"):
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content = parse_json_object_from_request(request)
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backfilled = content["backfilled"]
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event_payloads = content["events"]
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event_and_contexts = []
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for event_payload in event_payloads:
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event_dict = event_payload["event"]
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internal_metadata = event_payload["internal_metadata"]
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rejected_reason = event_payload["rejected_reason"]
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event = FrozenEvent(event_dict, internal_metadata, rejected_reason)
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context = yield EventContext.deserialize(
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self.store, event_payload["context"],
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)
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event_and_contexts.append((event, context))
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logger.info(
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"Got %d events from federation",
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len(event_and_contexts),
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)
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max_stream_id = yield self.store.persist_events(
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event_and_contexts,
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backfilled=backfilled
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)
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if not backfilled:
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for event, _ in event_and_contexts:
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self._notify_persisted_event(event, max_stream_id)
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defer.returnValue((200, {}))
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def _notify_persisted_event(self, event, max_stream_id):
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extra_users = []
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if event.type == EventTypes.Member:
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target_user_id = event.state_key
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# We notify for memberships if its an invite for one of our
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# users
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if event.internal_metadata.is_outlier():
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if event.membership != Membership.INVITE:
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if not self.is_mine_id(target_user_id):
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return
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target_user = UserID.from_string(target_user_id)
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extra_users.append(target_user)
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elif event.internal_metadata.is_outlier():
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return
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event_stream_id = event.internal_metadata.stream_ordering
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self.notifier.on_new_room_event(
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event, event_stream_id, max_stream_id,
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extra_users=extra_users
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)
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run_in_background(
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self.pusher_pool.on_new_notifications,
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event_stream_id, max_stream_id,
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)
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class ReplicationFederationSendEduRestServlet(ReplicationEndpoint):
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"""Handles EDUs newly received from federation, including persisting and
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notifying.
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"""
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NAME = "fed_send_edu"
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PATH_ARGS = ("edu_type",)
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def __init__(self, hs):
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super(ReplicationFederationSendEduRestServlet, self).__init__(hs)
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self.store = hs.get_datastore()
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self.clock = hs.get_clock()
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self.registry = hs.get_federation_registry()
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@staticmethod
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def _serialize_payload(edu_type, origin, content):
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return {
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"origin": origin,
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"content": content,
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}
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@defer.inlineCallbacks
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def _handle_request(self, request, edu_type):
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with Measure(self.clock, "repl_fed_send_edu_parse"):
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content = parse_json_object_from_request(request)
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origin = content["origin"]
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edu_content = content["content"]
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logger.info(
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"Got %r edu from $s",
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edu_type, origin,
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)
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result = yield self.registry.on_edu(edu_type, origin, edu_content)
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defer.returnValue((200, result))
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class ReplicationGetQueryRestServlet(ReplicationEndpoint):
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"""Handle responding to queries from federation.
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"""
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NAME = "fed_query"
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PATH_ARGS = ("query_type",)
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# This is a query, so let's not bother caching
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CACHE = False
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def __init__(self, hs):
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super(ReplicationGetQueryRestServlet, self).__init__(hs)
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self.store = hs.get_datastore()
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self.clock = hs.get_clock()
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self.registry = hs.get_federation_registry()
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@staticmethod
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def _serialize_payload(query_type, args):
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"""
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Args:
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query_type (str)
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args (dict): The arguments received for the given query type
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"""
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return {
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"args": args,
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}
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@defer.inlineCallbacks
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def _handle_request(self, request, query_type):
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with Measure(self.clock, "repl_fed_query_parse"):
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content = parse_json_object_from_request(request)
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args = content["args"]
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logger.info(
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"Got %r query",
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query_type,
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)
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result = yield self.registry.on_query(query_type, args)
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defer.returnValue((200, result))
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def register_servlets(hs, http_server):
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ReplicationFederationSendEventsRestServlet(hs).register(http_server)
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ReplicationFederationSendEduRestServlet(hs).register(http_server)
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ReplicationGetQueryRestServlet(hs).register(http_server)
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