From 92e058d6800e1cb33a0359cdc5c079b55612525c Mon Sep 17 00:00:00 2001
From: huangtianhua <huangtianhua@huawei.com>
Date: Wed, 11 Dec 2013 17:35:13 +0800
Subject: [PATCH] Fix KeyError while generating a WSGI response

The KeyError exception raised while generating a WSGI response based on
the 413 exception. Because there may be no "Retry-After" attribute in the
exception headers.

Change-Id: I89eb1878acc2195775be17fbcba8088f2e00bac1
Closes-Bug: #1259867
---
 cinder/api/openstack/wsgi.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/cinder/api/openstack/wsgi.py b/cinder/api/openstack/wsgi.py
index 70d127e8136..f07f75a8e39 100644
--- a/cinder/api/openstack/wsgi.py
+++ b/cinder/api/openstack/wsgi.py
@@ -1169,8 +1169,9 @@ class Fault(webob.exc.HTTPException):
                 'message': gettextutils.get_localized_message(explanation,
                                                               locale)}}
         if code == 413:
-            retry = self.wrapped_exc.headers['Retry-After']
-            fault_data[fault_name]['retryAfter'] = retry
+            retry = self.wrapped_exc.headers.get('Retry-After', None)
+            if retry:
+                fault_data[fault_name]['retryAfter'] = retry
 
         # 'code' is an attribute on the fault tag itself
         metadata = {'attributes': {fault_name: 'code'}}