gistfile1.txt

diff --git a/nova/openstack/common/rpc/impl_fake.py b/nova/openstack/common/rpc/impl_fake.py
index 8210671..a8e2e9f 100644
--- a/nova/openstack/common/rpc/impl_fake.py
+++ b/nova/openstack/common/rpc/impl_fake.py
@@ -1,5 +1,6 @@
 # vim: tabstop=4 shiftwidth=4 softtabstop=4
 
+#    Copyright 2013 IBM Corp.
 #    Copyright 2011 OpenStack Foundation
 #
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
@@ -17,6 +18,7 @@
 queues.  Casts will block, but this is very useful for tests.
 """
 
+import datetime
 import inspect
 # NOTE(russellb): We specifically want to use json, not our own jsonutils.
 # jsonutils has some extra logic to automatically convert objects to primitive
@@ -32,6 +34,14 @@ from nova.openstack.common.rpc import common as rpc_common
 CONSUMERS = {}
 
 
+class CustomizedJSONEncoder(json.JSONEncoder):
+    """ customized json encoder for datatime type."""
+    def default(self, obj):
+        if isinstance(obj, datetime.datetime):
+            return obj.strftime('%Y-%m-%dT%H:%M:%S')
+        return json.JSONEncoder.default(self, obj)
+
+
 class RpcContext(rpc_common.CommonRpcContext):
     def __init__(self, **kwargs):
         super(RpcContext, self).__init__(**kwargs)
@@ -128,7 +138,7 @@ def create_connection(conf, new=True):
 
 def check_serialize(msg):
     """Make sure a message intended for rpc can be serialized."""
-    json.dumps(msg)
+    json.dumps(msg, cls=CustomizedJSONEncoder)
 
 
 def multicall(conf, context, topic, msg, timeout=None):