Move catchup of replication streams to worker. (#7024)

This changes the replication protocol so that the server does not send down `RDATA` for rows that happened before the client connected. Instead, the server will send a `POSITION` and clients then query the database (or master out of band) to get up to date.

1 files changed, 5 insertions, 0 deletions

diff --git a/synapse/server.py b/synapse/server.py

index 1b980371de..9426eb1672 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -85,6 +85,7 @@ from synapse.http.matrixfederationclient import MatrixFederationHttpClient
 from synapse.notifier import Notifier
 from synapse.push.action_generator import ActionGenerator
 from synapse.push.pusherpool import PusherPool
+from synapse.replication.tcp.resource import ReplicationStreamer
 from synapse.rest.media.v1.media_repository import (
     MediaRepository,
     MediaRepositoryResource,
@@ -199,6 +200,7 @@ class HomeServer(object):
         "saml_handler",
         "event_client_serializer",
         "storage",
+        "replication_streamer",
     ]
 
     REQUIRED_ON_MASTER_STARTUP = ["user_directory_handler", "stats_handler"]
@@ -536,6 +538,9 @@ class HomeServer(object):
     def build_storage(self) -> Storage:
         return Storage(self, self.datastores)
 
+    def build_replication_streamer(self) -> ReplicationStreamer:
+        return ReplicationStreamer(self)
+
     def remove_pusher(self, app_id, push_key, user_id):
         return self.get_pusherpool().remove_pusher(app_id, push_key, user_id)