From a4521ce0a8d252e77ca8bd261ecf40ba67511a31 Mon Sep 17 00:00:00 2001 From: Patrick Cloke Date: Mon, 29 Nov 2021 14:32:20 -0500 Subject: Support the stable /hierarchy endpoint from MSC2946 (#11329) This also makes additional updates where the implementation had drifted from the approved MSC. Unstable endpoints will be removed at a later data. --- synapse/app/homeserver.py | 1 + synapse/federation/federation_client.py | 31 +++++++++++++++++++---- synapse/federation/transport/client.py | 22 +++++++++++++--- synapse/federation/transport/server/federation.py | 6 ++++- synapse/handlers/room_summary.py | 14 +++++++--- synapse/rest/client/room.py | 8 +++--- 6 files changed, 64 insertions(+), 18 deletions(-) (limited to 'synapse') diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py index 7e09530ad2..52541faab2 100644 --- a/synapse/app/homeserver.py +++ b/synapse/app/homeserver.py @@ -194,6 +194,7 @@ class SynapseHomeServer(HomeServer): { "/_matrix/client/api/v1": client_resource, "/_matrix/client/r0": client_resource, + "/_matrix/client/v1": client_resource, "/_matrix/client/v3": client_resource, "/_matrix/client/unstable": client_resource, "/_matrix/client/v2_alpha": client_resource, diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py index 3b85b135e0..bc3f96c1fc 100644 --- a/synapse/federation/federation_client.py +++ b/synapse/federation/federation_client.py @@ -1395,11 +1395,28 @@ class FederationClient(FederationBase): async def send_request( destination: str, ) -> Tuple[JsonDict, Sequence[JsonDict], Sequence[str]]: - res = await self.transport_layer.get_room_hierarchy( - destination=destination, - room_id=room_id, - suggested_only=suggested_only, - ) + try: + res = await self.transport_layer.get_room_hierarchy( + destination=destination, + room_id=room_id, + suggested_only=suggested_only, + ) + except HttpResponseException as e: + # If an error is received that is due to an unrecognised endpoint, + # fallback to the unstable endpoint. Otherwise consider it a + # legitmate error and raise. + if not self._is_unknown_endpoint(e): + raise + + logger.debug( + "Couldn't fetch room hierarchy with the v1 API, falling back to the unstable API" + ) + + res = await self.transport_layer.get_room_hierarchy_unstable( + destination=destination, + room_id=room_id, + suggested_only=suggested_only, + ) room = res.get("room") if not isinstance(room, dict): @@ -1449,6 +1466,10 @@ class FederationClient(FederationBase): if e.code != 502: raise + logger.debug( + "Couldn't fetch room hierarchy, falling back to the spaces API" + ) + # Fallback to the old federation API and translate the results if # no servers implement the new API. # diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py index 0fea221165..fe29bcfd4b 100644 --- a/synapse/federation/transport/client.py +++ b/synapse/federation/transport/client.py @@ -1192,10 +1192,24 @@ class TransportLayerClient: ) async def get_room_hierarchy( - self, - destination: str, - room_id: str, - suggested_only: bool, + self, destination: str, room_id: str, suggested_only: bool + ) -> JsonDict: + """ + Args: + destination: The remote server + room_id: The room ID to ask about. + suggested_only: if True, only suggested rooms will be returned + """ + path = _create_v1_path("/hierarchy/%s", room_id) + + return await self.client.get_json( + destination=destination, + path=path, + args={"suggested_only": "true" if suggested_only else "false"}, + ) + + async def get_room_hierarchy_unstable( + self, destination: str, room_id: str, suggested_only: bool ) -> JsonDict: """ Args: diff --git a/synapse/federation/transport/server/federation.py b/synapse/federation/transport/server/federation.py index 2fdf6cc99e..66e915228c 100644 --- a/synapse/federation/transport/server/federation.py +++ b/synapse/federation/transport/server/federation.py @@ -611,7 +611,6 @@ class FederationSpaceSummaryServlet(BaseFederationServlet): class FederationRoomHierarchyServlet(BaseFederationServlet): - PREFIX = FEDERATION_UNSTABLE_PREFIX + "/org.matrix.msc2946" PATH = "/hierarchy/(?P[^/]*)" def __init__( @@ -637,6 +636,10 @@ class FederationRoomHierarchyServlet(BaseFederationServlet): ) +class FederationRoomHierarchyUnstableServlet(FederationRoomHierarchyServlet): + PREFIX = FEDERATION_UNSTABLE_PREFIX + "/org.matrix.msc2946" + + class RoomComplexityServlet(BaseFederationServlet): """ Indicates to other servers how complex (and therefore likely @@ -701,6 +704,7 @@ FEDERATION_SERVLET_CLASSES: Tuple[Type[BaseFederationServlet], ...] = ( RoomComplexityServlet, FederationSpaceSummaryServlet, FederationRoomHierarchyServlet, + FederationRoomHierarchyUnstableServlet, FederationV1SendKnockServlet, FederationMakeKnockServlet, ) diff --git a/synapse/handlers/room_summary.py b/synapse/handlers/room_summary.py index 8181cc0b52..b2cfe537df 100644 --- a/synapse/handlers/room_summary.py +++ b/synapse/handlers/room_summary.py @@ -36,8 +36,9 @@ from synapse.api.errors import ( SynapseError, UnsupportedRoomVersionError, ) +from synapse.api.ratelimiting import Ratelimiter from synapse.events import EventBase -from synapse.types import JsonDict +from synapse.types import JsonDict, Requester from synapse.util.caches.response_cache import ResponseCache if TYPE_CHECKING: @@ -93,6 +94,9 @@ class RoomSummaryHandler: self._event_serializer = hs.get_event_client_serializer() self._server_name = hs.hostname self._federation_client = hs.get_federation_client() + self._ratelimiter = Ratelimiter( + store=self._store, clock=hs.get_clock(), rate_hz=5, burst_count=10 + ) # If a user tries to fetch the same page multiple times in quick succession, # only process the first attempt and return its result to subsequent requests. @@ -249,7 +253,7 @@ class RoomSummaryHandler: async def get_room_hierarchy( self, - requester: str, + requester: Requester, requested_room_id: str, suggested_only: bool = False, max_depth: Optional[int] = None, @@ -276,6 +280,8 @@ class RoomSummaryHandler: Returns: The JSON hierarchy dictionary. """ + await self._ratelimiter.ratelimit(requester) + # If a user tries to fetch the same page multiple times in quick succession, # only process the first attempt and return its result to subsequent requests. # @@ -283,7 +289,7 @@ class RoomSummaryHandler: # to process multiple requests for the same page will result in errors. return await self._pagination_response_cache.wrap( ( - requester, + requester.user.to_string(), requested_room_id, suggested_only, max_depth, @@ -291,7 +297,7 @@ class RoomSummaryHandler: from_token, ), self._get_room_hierarchy, - requester, + requester.user.to_string(), requested_room_id, suggested_only, max_depth, diff --git a/synapse/rest/client/room.py b/synapse/rest/client/room.py index 955d4e8641..73d0f7c950 100644 --- a/synapse/rest/client/room.py +++ b/synapse/rest/client/room.py @@ -1138,12 +1138,12 @@ class RoomSpaceSummaryRestServlet(RestServlet): class RoomHierarchyRestServlet(RestServlet): - PATTERNS = ( + PATTERNS = [ re.compile( - "^/_matrix/client/unstable/org.matrix.msc2946" + "^/_matrix/client/(v1|unstable/org.matrix.msc2946)" "/rooms/(?P[^/]*)/hierarchy$" ), - ) + ] def __init__(self, hs: "HomeServer"): super().__init__() @@ -1168,7 +1168,7 @@ class RoomHierarchyRestServlet(RestServlet): ) return 200, await self._room_summary_handler.get_room_hierarchy( - requester.user.to_string(), + requester, room_id, suggested_only=parse_boolean(request, "suggested_only", default=False), max_depth=max_depth, -- cgit 1.4.1