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-rw-r--r--synapse/replication/resource.py35
1 files changed, 33 insertions, 2 deletions
diff --git a/synapse/replication/resource.py b/synapse/replication/resource.py
index 5a14c51d23..d79b421cba 100644
--- a/synapse/replication/resource.py
+++ b/synapse/replication/resource.py
@@ -17,6 +17,7 @@ from synapse.http.servlet import parse_integer, parse_string
 from synapse.http.server import request_handler, finish_request
 from synapse.replication.pusher_resource import PusherResource
 from synapse.replication.presence_resource import PresenceResource
+from synapse.replication.expire_cache import ExpireCacheResource
 from synapse.api.errors import SynapseError
 
 from twisted.web.resource import Resource
@@ -44,6 +45,7 @@ STREAM_NAMES = (
     ("caches",),
     ("to_device",),
     ("public_rooms",),
+    ("federation",),
 )
 
 
@@ -116,11 +118,14 @@ class ReplicationResource(Resource):
         self.sources = hs.get_event_sources()
         self.presence_handler = hs.get_presence_handler()
         self.typing_handler = hs.get_typing_handler()
+        self.federation_sender = hs.get_federation_sender()
         self.notifier = hs.notifier
         self.clock = hs.get_clock()
+        self.config = hs.get_config()
 
         self.putChild("remove_pushers", PusherResource(hs))
         self.putChild("syncing_users", PresenceResource(hs))
+        self.putChild("expire_cache", ExpireCacheResource(hs))
 
     def render_GET(self, request):
         self._async_render_GET(request)
@@ -134,6 +139,7 @@ class ReplicationResource(Resource):
         pushers_token = self.store.get_pushers_stream_token()
         caches_token = self.store.get_cache_stream_token()
         public_rooms_token = self.store.get_current_public_room_stream_id()
+        federation_token = self.federation_sender.get_current_token()
 
         defer.returnValue(_ReplicationToken(
             room_stream_token,
@@ -148,6 +154,7 @@ class ReplicationResource(Resource):
             caches_token,
             int(stream_token.to_device_key),
             int(public_rooms_token),
+            int(federation_token),
         ))
 
     @request_handler()
@@ -164,8 +171,13 @@ class ReplicationResource(Resource):
         }
         request_streams["streams"] = parse_string(request, "streams")
 
+        federation_ack = parse_integer(request, "federation_ack", None)
+
         def replicate():
-            return self.replicate(request_streams, limit)
+            return self.replicate(
+                request_streams, limit,
+                federation_ack=federation_ack
+            )
 
         writer = yield self.notifier.wait_for_replication(replicate, timeout)
         result = writer.finish()
@@ -183,7 +195,7 @@ class ReplicationResource(Resource):
         finish_request(request)
 
     @defer.inlineCallbacks
-    def replicate(self, request_streams, limit):
+    def replicate(self, request_streams, limit, federation_ack=None):
         writer = _Writer()
         current_token = yield self.current_replication_token()
         logger.debug("Replicating up to %r", current_token)
@@ -202,6 +214,7 @@ class ReplicationResource(Resource):
         yield self.caches(writer, current_token, limit, request_streams)
         yield self.to_device(writer, current_token, limit, request_streams)
         yield self.public_rooms(writer, current_token, limit, request_streams)
+        self.federation(writer, current_token, limit, request_streams, federation_ack)
         self.streams(writer, current_token, request_streams)
 
         logger.debug("Replicated %d rows", writer.total)
@@ -465,6 +478,23 @@ class ReplicationResource(Resource):
                 "position", "room_id", "visibility"
             ), position=upto_token)
 
+    def federation(self, writer, current_token, limit, request_streams, federation_ack):
+        if self.config.send_federation:
+            return
+
+        current_position = current_token.federation
+
+        federation = request_streams.get("federation")
+
+        if federation is not None and federation != current_position:
+            federation_rows = self.federation_sender.get_replication_rows(
+                federation, limit, federation_ack=federation_ack,
+            )
+            upto_token = _position_from_rows(federation_rows, current_position)
+            writer.write_header_and_rows("federation", federation_rows, (
+                "position", "type", "content",
+            ), position=upto_token)
+
 
 class _Writer(object):
     """Writes the streams as a JSON object as the response to the request"""
@@ -497,6 +527,7 @@ class _Writer(object):
 class _ReplicationToken(collections.namedtuple("_ReplicationToken", (
     "events", "presence", "typing", "receipts", "account_data", "backfill",
     "push_rules", "pushers", "state", "caches", "to_device", "public_rooms",
+    "federation",
 ))):
     __slots__ = []