mirror of
https://mau.dev/maunium/synapse.git
synced 2024-08-22 10:15:33 +00:00
![Erik Johnston](/assets/img/avatar_default.png)
This is *not* ready for production yet. Caveats: 1. We should write some tests... 2. The stream token that we use for events can get stalled at the minimum position of all writers. This means that new events may not be processed and e.g. sent down sync streams if a writer isn't writing or is slow.
295 lines
8.9 KiB
Python
295 lines
8.9 KiB
Python
# -*- 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 synapse.api.room_versions import KNOWN_ROOM_VERSIONS
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from synapse.events import make_event_from_dict
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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.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. Returns the maximum stream ID of the persisted events.
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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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"room_version": .., // "1", "2", "3", etc: the version of the room
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// containing the event
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"event_format_version": .., // 1,2,3 etc: the event format version
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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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200 OK
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{
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"max_stream_id": 32443,
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}
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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.storage = hs.get_storage()
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self.clock = hs.get_clock()
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self.federation_handler = hs.get_handlers().federation_handler
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@staticmethod
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async def _serialize_payload(store, room_id, event_and_contexts, backfilled):
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"""
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Args:
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store
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room_id (str)
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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 = await context.serialize(event, store)
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event_payloads.append(
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{
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"event": event.get_pdu_json(),
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"room_version": event.room_version.identifier,
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"event_format_version": event.format_version,
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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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)
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payload = {
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"events": event_payloads,
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"backfilled": backfilled,
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"room_id": room_id,
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}
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return payload
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async 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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room_id = content["room_id"]
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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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room_ver = KNOWN_ROOM_VERSIONS[event_payload["room_version"]]
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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 = make_event_from_dict(
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event_dict, room_ver, internal_metadata, rejected_reason
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)
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context = EventContext.deserialize(
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self.storage, event_payload["context"]
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)
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event_and_contexts.append((event, context))
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logger.info("Got %d events from federation", len(event_and_contexts))
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max_stream_id = await self.federation_handler.persist_events_and_notify(
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room_id, event_and_contexts, backfilled
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)
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return 200, {"max_stream_id": max_stream_id}
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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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Request format:
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POST /_synapse/replication/fed_send_edu/:edu_type/:txn_id
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{
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"origin": ...,
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"content: { ... }
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}
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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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async def _serialize_payload(edu_type, origin, content):
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return {"origin": origin, "content": content}
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async 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("Got %r edu from %s", edu_type, origin)
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result = await self.registry.on_edu(edu_type, origin, edu_content)
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return 200, result
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class ReplicationGetQueryRestServlet(ReplicationEndpoint):
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"""Handle responding to queries from federation.
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Request format:
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POST /_synapse/replication/fed_query/:query_type
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{
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"args": { ... }
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}
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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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async 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 {"args": args}
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async 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("Got %r query", query_type)
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result = await self.registry.on_query(query_type, args)
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return 200, result
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class ReplicationCleanRoomRestServlet(ReplicationEndpoint):
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"""Called to clean up any data in DB for a given room, ready for the
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server to join the room.
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Request format:
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POST /_synapse/replication/fed_cleanup_room/:room_id/:txn_id
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{}
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"""
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NAME = "fed_cleanup_room"
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PATH_ARGS = ("room_id",)
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def __init__(self, hs):
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super(ReplicationCleanRoomRestServlet, self).__init__(hs)
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self.store = hs.get_datastore()
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@staticmethod
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async def _serialize_payload(room_id, args):
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"""
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Args:
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room_id (str)
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"""
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return {}
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async def _handle_request(self, request, room_id):
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await self.store.clean_room_for_join(room_id)
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return 200, {}
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class ReplicationStoreRoomOnInviteRestServlet(ReplicationEndpoint):
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"""Called to clean up any data in DB for a given room, ready for the
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server to join the room.
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Request format:
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POST /_synapse/replication/store_room_on_invite/:room_id/:txn_id
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{
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"room_version": "1",
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}
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"""
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NAME = "store_room_on_invite"
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PATH_ARGS = ("room_id",)
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def __init__(self, hs):
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super().__init__(hs)
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self.store = hs.get_datastore()
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@staticmethod
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async def _serialize_payload(room_id, room_version):
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return {"room_version": room_version.identifier}
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async def _handle_request(self, request, room_id):
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content = parse_json_object_from_request(request)
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room_version = KNOWN_ROOM_VERSIONS[content["room_version"]]
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await self.store.maybe_store_room_on_invite(room_id, room_version)
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return 200, {}
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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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ReplicationCleanRoomRestServlet(hs).register(http_server)
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ReplicationStoreRoomOnInviteRestServlet(hs).register(http_server)
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