diff options
Diffstat (limited to 'synapse/federation/federation_server.py')
| -rw-r--r-- | synapse/federation/federation_server.py | 58 |
1 files changed, 53 insertions, 5 deletions
diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py index 9a8758e9a6..8e37e76206 100644 --- a/synapse/federation/federation_server.py +++ b/synapse/federation/federation_server.py @@ -1,6 +1,6 @@ # Copyright 2015, 2016 OpenMarket Ltd # Copyright 2018 New Vector Ltd -# Copyright 2019 Matrix.org Federation C.I.C +# Copyright 2019-2021 Matrix.org Federation 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. @@ -110,6 +110,7 @@ class FederationServer(FederationBase): super().__init__(hs) self.handler = hs.get_federation_handler() + self.storage = hs.get_storage() self._federation_event_handler = hs.get_federation_event_handler() self.state = hs.get_state_handler() self._event_auth_handler = hs.get_event_auth_handler() @@ -200,6 +201,48 @@ class FederationServer(FederationBase): return 200, res + async def on_timestamp_to_event_request( + self, origin: str, room_id: str, timestamp: int, direction: str + ) -> Tuple[int, Dict[str, Any]]: + """When we receive a federated `/timestamp_to_event` request, + handle all of the logic for validating and fetching the event. + + Args: + origin: The server we received the event from + room_id: Room to fetch the event from + timestamp: The point in time (inclusive) we should navigate from in + the given direction to find the closest event. + direction: ["f"|"b"] to indicate whether we should navigate forward + or backward from the given timestamp to find the closest event. + + Returns: + Tuple indicating the response status code and dictionary response + body including `event_id`. + """ + with (await self._server_linearizer.queue((origin, room_id))): + origin_host, _ = parse_server_name(origin) + await self.check_server_matches_acl(origin_host, room_id) + + # We only try to fetch data from the local database + event_id = await self.store.get_event_id_for_timestamp( + room_id, timestamp, direction + ) + if event_id: + event = await self.store.get_event( + event_id, allow_none=False, allow_rejected=False + ) + + return 200, { + "event_id": event_id, + "origin_server_ts": event.origin_server_ts, + } + + raise SynapseError( + 404, + "Unable to find event from %s in direction %s" % (timestamp, direction), + errcode=Codes.NOT_FOUND, + ) + async def on_incoming_transaction( self, origin: str, @@ -407,7 +450,7 @@ class FederationServer(FederationBase): # require callouts to other servers to fetch missing events), but # impose a limit to avoid going too crazy with ram/cpu. - async def process_pdus_for_room(room_id: str): + async def process_pdus_for_room(room_id: str) -> None: with nested_logging_context(room_id): logger.debug("Processing PDUs for %s", room_id) @@ -504,7 +547,7 @@ class FederationServer(FederationBase): async def on_state_ids_request( self, origin: str, room_id: str, event_id: str - ) -> Tuple[int, Dict[str, Any]]: + ) -> Tuple[int, JsonDict]: if not event_id: raise NotImplementedError("Specify an event") @@ -524,7 +567,9 @@ class FederationServer(FederationBase): return 200, resp - async def _on_state_ids_request_compute(self, room_id, event_id): + async def _on_state_ids_request_compute( + self, room_id: str, event_id: str + ) -> JsonDict: state_ids = await self.handler.get_state_ids_for_pdu(room_id, event_id) auth_chain_ids = await self.store.get_auth_chain_ids(room_id, state_ids) return {"pdu_ids": state_ids, "auth_chain_ids": auth_chain_ids} @@ -613,8 +658,11 @@ class FederationServer(FederationBase): state = await self.store.get_events(state_ids) time_now = self._clock.time_msec() + event_json = event.get_pdu_json() return { - "org.matrix.msc3083.v2.event": event.get_pdu_json(), + # TODO Remove the unstable prefix when servers have updated. + "org.matrix.msc3083.v2.event": event_json, + "event": event_json, "state": [p.get_pdu_json(time_now) for p in state.values()], "auth_chain": [p.get_pdu_json(time_now) for p in auth_chain], } |