From 6868d53fe919e041772428a1fb61ce3cef639e83 Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <richard@matrix.org>
Date: Thu, 21 Feb 2019 15:58:15 +0000
Subject: [PATCH] bail out early in on_new_receipts if no pushers

---
 synapse/push/pusherpool.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/synapse/push/pusherpool.py b/synapse/push/pusherpool.py
index 5a4e73ccd6..99f499a60e 100644
--- a/synapse/push/pusherpool.py
+++ b/synapse/push/pusherpool.py
@@ -155,6 +155,10 @@ class PusherPool:
 
     @defer.inlineCallbacks
     def on_new_receipts(self, min_stream_id, max_stream_id, affected_room_ids):
+        if not self.pushers:
+            # nothing to do here.
+            return
+
         try:
             # Need to subtract 1 from the minimum because the lower bound here
             # is not inclusive