diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 7026df90a2..ef9ed274df 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -35,7 +35,7 @@ class FederationHandler(BaseHandler):
@log_function
@defer.inlineCallbacks
- def on_receive(self, event, is_new_state):
+ def on_receive(self, event, is_new_state, backfilled):
if hasattr(event, "state_key") and not is_new_state:
logger.debug("Ignoring old state.")
return
@@ -70,6 +70,21 @@ class FederationHandler(BaseHandler):
else:
with (yield self.room_lock.lock(event.room_id)):
- store_id = yield self.store.persist_event(event)
+ store_id = yield self.store.persist_event(event, backfilled)
- yield self.notifier.on_new_room_event(event, store_id)
+ if not backfilled:
+ yield self.notifier.on_new_room_event(event, store_id)
+
+
+ @log_function
+ @defer.inlineCallbacks
+ def backfill(self, dest, room_id, limit):
+ events = yield self.hs.get_federation().backfill(dest, room_id, limit)
+
+ for event in events:
+ try:
+ yield self.store.persist_event(event, backfilled=True)
+ except:
+ logger.debug("Failed to persiste event: %s", event)
+
+ defer.returnValue(events)
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