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-rw-r--r--synapse/replication/tcp/resource.py3
-rw-r--r--synapse/replication/tcp/streams.py22
2 files changed, 24 insertions, 1 deletions
diff --git a/synapse/replication/tcp/resource.py b/synapse/replication/tcp/resource.py
index 8b2c4c3043..69c46911ec 100644
--- a/synapse/replication/tcp/resource.py
+++ b/synapse/replication/tcp/resource.py
@@ -67,6 +67,7 @@ class ReplicationStreamer(object):
         self.store = hs.get_datastore()
         self.presence_handler = hs.get_presence_handler()
         self.clock = hs.get_clock()
+        self.notifier = hs.get_notifier()
 
         # Current connections.
         self.connections = []
@@ -99,7 +100,7 @@ class ReplicationStreamer(object):
         if not hs.config.send_federation:
             self.federation_sender = hs.get_federation_sender()
 
-        hs.get_notifier().add_replication_callback(self.on_notifier_poke)
+        self.notifier.add_replication_callback(self.on_notifier_poke)
 
         # Keeps track of whether we are currently checking for updates
         self.is_looping = False
diff --git a/synapse/replication/tcp/streams.py b/synapse/replication/tcp/streams.py
index 369d5f2428..fbafe12cc2 100644
--- a/synapse/replication/tcp/streams.py
+++ b/synapse/replication/tcp/streams.py
@@ -112,6 +112,12 @@ AccountDataStreamRow = namedtuple("AccountDataStream", (
     "data_type",  # str
     "data",  # dict
 ))
+CurrentStateDeltaStreamRow = namedtuple("CurrentStateDeltaStream", (
+    "room_id",  # str
+    "type",  # str
+    "state_key",  # str
+    "event_id",  # str, optional
+))
 
 
 class Stream(object):
@@ -443,6 +449,21 @@ class AccountDataStream(Stream):
         defer.returnValue(results)
 
 
+class CurrentStateDeltaStream(Stream):
+    """Current state for a room was changed
+    """
+    NAME = "current_state_deltas"
+    ROW_TYPE = CurrentStateDeltaStreamRow
+
+    def __init__(self, hs):
+        store = hs.get_datastore()
+
+        self.current_token = store.get_max_current_state_delta_stream_id
+        self.update_function = store.get_all_updated_current_state_deltas
+
+        super(CurrentStateDeltaStream, self).__init__(hs)
+
+
 STREAMS_MAP = {
     stream.NAME: stream
     for stream in (
@@ -460,5 +481,6 @@ STREAMS_MAP = {
         FederationStream,
         TagAccountDataStream,
         AccountDataStream,
+        CurrentStateDeltaStream,
     )
 }