Add option to move event persistence off master (#7517)

synapse/replication/http/membership.py

@@ -14,12 +14,16 @@
 # limitations under the License.
 
 import logging
+from typing import TYPE_CHECKING
 
 from synapse.http.servlet import parse_json_object_from_request
 from synapse.replication.http._base import ReplicationEndpoint
 from synapse.types import Requester, UserID
 from synapse.util.distributor import user_joined_room, user_left_room
 
+if TYPE_CHECKING:
+    from synapse.server import HomeServer
+
 logger = logging.getLogger(__name__)
 
 
@@ -106,6 +110,7 @@ class ReplicationRemoteRejectInviteRestServlet(ReplicationEndpoint):
         self.federation_handler = hs.get_handlers().federation_handler
         self.store = hs.get_datastore()
         self.clock = hs.get_clock()
+        self.member_handler = hs.get_room_member_handler()
 
     @staticmethod
     def _serialize_payload(requester, room_id, user_id, remote_room_hosts, content):
@@ -149,12 +154,44 @@ class ReplicationRemoteRejectInviteRestServlet(ReplicationEndpoint):
             #
             logger.warning("Failed to reject invite: %s", e)
 
-            stream_id = await self.store.locally_reject_invite(user_id, room_id)
+            stream_id = await self.member_handler.locally_reject_invite(
+                user_id, room_id
+            )
             event_id = None
 
         return 200, {"event_id": event_id, "stream_id": stream_id}
 
 
+class ReplicationLocallyRejectInviteRestServlet(ReplicationEndpoint):
+    """Rejects the invite for the user and room locally.
+
+    Request format:
+
+        POST /_synapse/replication/locally_reject_invite/:room_id/:user_id
+
+        {}
+    """
+
+    NAME = "locally_reject_invite"
+    PATH_ARGS = ("room_id", "user_id")
+
+    def __init__(self, hs: "HomeServer"):
+        super().__init__(hs)
+
+        self.member_handler = hs.get_room_member_handler()
+
+    @staticmethod
+    def _serialize_payload(room_id, user_id):
+        return {}
+
+    async def _handle_request(self, request, room_id, user_id):
+        logger.info("locally_reject_invite: %s out of room: %s", user_id, room_id)
+
+        stream_id = await self.member_handler.locally_reject_invite(user_id, room_id)
+
+        return 200, {"stream_id": stream_id}
+
+
 class ReplicationUserJoinedLeftRoomRestServlet(ReplicationEndpoint):
     """Notifies that a user has joined or left the room
 
@@ -208,3 +245,4 @@ def register_servlets(hs, http_server):
     ReplicationRemoteJoinRestServlet(hs).register(http_server)
     ReplicationRemoteRejectInviteRestServlet(hs).register(http_server)
     ReplicationUserJoinedLeftRoomRestServlet(hs).register(http_server)
+    ReplicationLocallyRejectInviteRestServlet(hs).register(http_server)