From 6e7d36a72c5778be6d1a79d296b1fcdce667839d Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Tue, 18 Aug 2015 11:51:08 +0100
Subject: [PATCH] Also check for presence of 'threadCallQueue' in reactor

---
 synapse/metrics/__init__.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py
index 2e307a03a..d7bcad8a8 100644
--- a/synapse/metrics/__init__.py
+++ b/synapse/metrics/__init__.py
@@ -184,7 +184,14 @@ def runUntilCurrentTimer(func):
     return f
 
 
-if hasattr(reactor, "runUntilCurrent") and hasattr(reactor, "_newTimedCalls"):
+try:
+    # Ensure the reactor has all the attributes we expect
+    reactor.runUntilCurrent
+    reactor._newTimedCalls
+    reactor.threadCallQueue
+
     # runUntilCurrent is called when we have pending calls. It is called once
     # per iteratation after fd polling.
     reactor.runUntilCurrent = runUntilCurrentTimer(reactor.runUntilCurrent)
+except AttributeError:
+    pass