anonymousland-synapse/synapse/replication/http/federation.py
Andrew Morgan e8d0853739
Generalise _maybe_store_room_on_invite (#8754)
There's a handy function called maybe_store_room_on_invite which allows us to create an entry in the rooms table for a room and its version for which we aren't joined to yet, but we can reference when ingesting events about.

This is currently used for invites where we receive some stripped state about the room and pass it down via /sync to the client, without us being in the room yet.

There is a similar requirement for knocking, where we will eventually do the same thing, and need an entry in the rooms table as well. Thus, reusing this function works, however its name needs to be generalised a bit.

Separated out from #6739.
2020-11-13 16:24:04 +00:00

295 lines
8.8 KiB
Python

# -*- 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.
import logging
from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
from synapse.events import make_event_from_dict
from synapse.events.snapshot import EventContext
from synapse.http.servlet import parse_json_object_from_request
from synapse.replication.http._base import ReplicationEndpoint
from synapse.util.metrics import Measure
logger = logging.getLogger(__name__)
class ReplicationFederationSendEventsRestServlet(ReplicationEndpoint):
"""Handles events newly received from federation, including persisting and
notifying. Returns the maximum stream ID of the persisted events.
The API looks like:
POST /_synapse/replication/fed_send_events/:txn_id
{
"events": [{
"event": { .. serialized event .. },
"room_version": .., // "1", "2", "3", etc: the version of the room
// containing the event
"event_format_version": .., // 1,2,3 etc: the event format version
"internal_metadata": { .. serialized internal_metadata .. },
"rejected_reason": .., // The event.rejected_reason field
"context": { .. serialized event context .. },
}],
"backfilled": false
}
200 OK
{
"max_stream_id": 32443,
}
"""
NAME = "fed_send_events"
PATH_ARGS = ()
def __init__(self, hs):
super().__init__(hs)
self.store = hs.get_datastore()
self.storage = hs.get_storage()
self.clock = hs.get_clock()
self.federation_handler = hs.get_federation_handler()
@staticmethod
async def _serialize_payload(store, room_id, event_and_contexts, backfilled):
"""
Args:
store
room_id (str)
event_and_contexts (list[tuple[FrozenEvent, EventContext]])
backfilled (bool): Whether or not the events are the result of
backfilling
"""
event_payloads = []
for event, context in event_and_contexts:
serialized_context = await context.serialize(event, store)
event_payloads.append(
{
"event": event.get_pdu_json(),
"room_version": event.room_version.identifier,
"event_format_version": event.format_version,
"internal_metadata": event.internal_metadata.get_dict(),
"rejected_reason": event.rejected_reason,
"context": serialized_context,
}
)
payload = {
"events": event_payloads,
"backfilled": backfilled,
"room_id": room_id,
}
return payload
async def _handle_request(self, request):
with Measure(self.clock, "repl_fed_send_events_parse"):
content = parse_json_object_from_request(request)
room_id = content["room_id"]
backfilled = content["backfilled"]
event_payloads = content["events"]
event_and_contexts = []
for event_payload in event_payloads:
event_dict = event_payload["event"]
room_ver = KNOWN_ROOM_VERSIONS[event_payload["room_version"]]
internal_metadata = event_payload["internal_metadata"]
rejected_reason = event_payload["rejected_reason"]
event = make_event_from_dict(
event_dict, room_ver, internal_metadata, rejected_reason
)
context = EventContext.deserialize(
self.storage, event_payload["context"]
)
event_and_contexts.append((event, context))
logger.info("Got %d events from federation", len(event_and_contexts))
max_stream_id = await self.federation_handler.persist_events_and_notify(
room_id, event_and_contexts, backfilled
)
return 200, {"max_stream_id": max_stream_id}
class ReplicationFederationSendEduRestServlet(ReplicationEndpoint):
"""Handles EDUs newly received from federation, including persisting and
notifying.
Request format:
POST /_synapse/replication/fed_send_edu/:edu_type/:txn_id
{
"origin": ...,
"content: { ... }
}
"""
NAME = "fed_send_edu"
PATH_ARGS = ("edu_type",)
def __init__(self, hs):
super().__init__(hs)
self.store = hs.get_datastore()
self.clock = hs.get_clock()
self.registry = hs.get_federation_registry()
@staticmethod
async def _serialize_payload(edu_type, origin, content):
return {"origin": origin, "content": content}
async def _handle_request(self, request, edu_type):
with Measure(self.clock, "repl_fed_send_edu_parse"):
content = parse_json_object_from_request(request)
origin = content["origin"]
edu_content = content["content"]
logger.info("Got %r edu from %s", edu_type, origin)
result = await self.registry.on_edu(edu_type, origin, edu_content)
return 200, result
class ReplicationGetQueryRestServlet(ReplicationEndpoint):
"""Handle responding to queries from federation.
Request format:
POST /_synapse/replication/fed_query/:query_type
{
"args": { ... }
}
"""
NAME = "fed_query"
PATH_ARGS = ("query_type",)
# This is a query, so let's not bother caching
CACHE = False
def __init__(self, hs):
super().__init__(hs)
self.store = hs.get_datastore()
self.clock = hs.get_clock()
self.registry = hs.get_federation_registry()
@staticmethod
async def _serialize_payload(query_type, args):
"""
Args:
query_type (str)
args (dict): The arguments received for the given query type
"""
return {"args": args}
async def _handle_request(self, request, query_type):
with Measure(self.clock, "repl_fed_query_parse"):
content = parse_json_object_from_request(request)
args = content["args"]
logger.info("Got %r query", query_type)
result = await self.registry.on_query(query_type, args)
return 200, result
class ReplicationCleanRoomRestServlet(ReplicationEndpoint):
"""Called to clean up any data in DB for a given room, ready for the
server to join the room.
Request format:
POST /_synapse/replication/fed_cleanup_room/:room_id/:txn_id
{}
"""
NAME = "fed_cleanup_room"
PATH_ARGS = ("room_id",)
def __init__(self, hs):
super().__init__(hs)
self.store = hs.get_datastore()
@staticmethod
async def _serialize_payload(room_id, args):
"""
Args:
room_id (str)
"""
return {}
async def _handle_request(self, request, room_id):
await self.store.clean_room_for_join(room_id)
return 200, {}
class ReplicationStoreRoomOnOutlierMembershipRestServlet(ReplicationEndpoint):
"""Called to clean up any data in DB for a given room, ready for the
server to join the room.
Request format:
POST /_synapse/replication/store_room_on_outlier_membership/:room_id/:txn_id
{
"room_version": "1",
}
"""
NAME = "store_room_on_outlier_membership"
PATH_ARGS = ("room_id",)
def __init__(self, hs):
super().__init__(hs)
self.store = hs.get_datastore()
@staticmethod
async def _serialize_payload(room_id, room_version):
return {"room_version": room_version.identifier}
async def _handle_request(self, request, room_id):
content = parse_json_object_from_request(request)
room_version = KNOWN_ROOM_VERSIONS[content["room_version"]]
await self.store.maybe_store_room_on_outlier_membership(room_id, room_version)
return 200, {}
def register_servlets(hs, http_server):
ReplicationFederationSendEventsRestServlet(hs).register(http_server)
ReplicationFederationSendEduRestServlet(hs).register(http_server)
ReplicationGetQueryRestServlet(hs).register(http_server)
ReplicationCleanRoomRestServlet(hs).register(http_server)
ReplicationStoreRoomOnOutlierMembershipRestServlet(hs).register(http_server)