From 157298f9862bd06e9268aed9cdffbc1c912fd74d Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Thu, 1 Mar 2018 11:59:45 +0000
Subject: [PATCH] Don't do preserve_fn for every request

---
 synapse/replication/http/send_event.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/synapse/replication/http/send_event.py b/synapse/replication/http/send_event.py
index f490622b63..665a56d2e6 100644
--- a/synapse/replication/http/send_event.py
+++ b/synapse/replication/http/send_event.py
@@ -122,10 +122,11 @@ class ReplicationSendEventRestServlet(RestServlet):
             logger.warn("Returning cached response")
             result = self.response_cache.set(
                 event_id,
-                preserve_fn(self._handle_request)(request)
+                self._handle_request(request)
             )
         return make_deferred_yieldable(result)
 
+    @preserve_fn
     @defer.inlineCallbacks
     def _handle_request(self, request):
         with Measure(self.clock, "repl_send_event_parse"):