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Diffstat (limited to 'synapse/replication/http/send_events.py')
| -rw-r--r-- | synapse/replication/http/send_events.py | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/synapse/replication/http/send_events.py b/synapse/replication/http/send_events.py new file mode 100644 index 0000000000..8889bbb644 --- /dev/null +++ b/synapse/replication/http/send_events.py @@ -0,0 +1,171 @@ +# Copyright 2022 The Matrix.org Foundation C.I.C. +# +# 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 typing import TYPE_CHECKING, List, Tuple + +from twisted.web.server import Request + +from synapse.api.room_versions import KNOWN_ROOM_VERSIONS +from synapse.events import EventBase, make_event_from_dict +from synapse.events.snapshot import EventContext +from synapse.http.server import HttpServer +from synapse.http.servlet import parse_json_object_from_request +from synapse.replication.http._base import ReplicationEndpoint +from synapse.types import JsonDict, Requester, UserID +from synapse.util.metrics import Measure + +if TYPE_CHECKING: + from synapse.server import HomeServer + from synapse.storage.databases.main import DataStore + +logger = logging.getLogger(__name__) + + +class ReplicationSendEventsRestServlet(ReplicationEndpoint): + """Handles batches of newly created events on workers, including persisting and + notifying. + + The API looks like: + + POST /_synapse/replication/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 .. }, + "outlier": true|false, + "rejected_reason": .., // The event.rejected_reason field + "context": { .. serialized event context .. }, + "requester": { .. serialized requester .. }, + "ratelimit": true, + }] + } + + 200 OK + + { "stream_id": 12345, "event_id": "$abcdef..." } + + Responds with a 409 when a `PartialStateConflictError` is raised due to an event + context that needs to be recomputed due to the un-partial stating of a room. + + """ + + NAME = "send_events" + PATH_ARGS = () + + def __init__(self, hs: "HomeServer"): + super().__init__(hs) + + self.event_creation_handler = hs.get_event_creation_handler() + self.store = hs.get_datastores().main + self._storage_controllers = hs.get_storage_controllers() + self.clock = hs.get_clock() + + @staticmethod + async def _serialize_payload( # type: ignore[override] + events_and_context: List[Tuple[EventBase, EventContext]], + store: "DataStore", + requester: Requester, + ratelimit: bool, + extra_users: List[UserID], + ) -> JsonDict: + """ + Args: + store + requester + events_and_ctx + ratelimit + """ + serialized_events = [] + + for event, context in events_and_context: + serialized_context = await context.serialize(event, store) + serialized_event = { + "event": event.get_pdu_json(), + "room_version": event.room_version.identifier, + "event_format_version": event.format_version, + "internal_metadata": event.internal_metadata.get_dict(), + "outlier": event.internal_metadata.is_outlier(), + "rejected_reason": event.rejected_reason, + "context": serialized_context, + "requester": requester.serialize(), + "ratelimit": ratelimit, + "extra_users": [u.to_string() for u in extra_users], + } + serialized_events.append(serialized_event) + + payload = {"events": serialized_events} + + return payload + + async def _handle_request( # type: ignore[override] + self, request: Request + ) -> Tuple[int, JsonDict]: + with Measure(self.clock, "repl_send_events_parse"): + payload = parse_json_object_from_request(request) + events_and_context = [] + events = payload["events"] + + for event_payload in events: + 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 + ) + event.internal_metadata.outlier = event_payload["outlier"] + + requester = Requester.deserialize( + self.store, event_payload["requester"] + ) + context = EventContext.deserialize( + self._storage_controllers, event_payload["context"] + ) + + ratelimit = event_payload["ratelimit"] + events_and_context.append((event, context)) + + extra_users = [ + UserID.from_string(u) for u in event_payload["extra_users"] + ] + + logger.info( + "Got batch of events to send, last ID of batch is: %s, sending into room: %s", + event.event_id, + event.room_id, + ) + + last_event = ( + await self.event_creation_handler.persist_and_notify_client_events( + requester, events_and_context, ratelimit, extra_users + ) + ) + + return ( + 200, + { + "stream_id": last_event.internal_metadata.stream_ordering, + "event_id": last_event.event_id, + }, + ) + + +def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None: + ReplicationSendEventsRestServlet(hs).register(http_server) |