Derive CallbackModules from CallbackBase.

playbooks/callback_plugins/hipchat_plugin.py

@@ -9,9 +9,10 @@ try:
     import hipchat
 except ImportError:
     hipchat = None
+from ansible.plugins.callback import CallbackBase
 
 
-class CallbackModule(object):
+class CallbackModule(CallbackBase):
     """Send status updates to a HipChat channel during playbook execution.
 
     This plugin makes use of the following environment variables:

playbooks/callback_plugins/sqs.py

@@ -28,9 +28,10 @@ except ImportError:
 else:
     import boto.sqs
     from boto.exception import NoAuthHandlerFound
+from ansible.plugins.callback import CallbackBase
 
 
-class CallbackModule(object):
+class CallbackModule(CallbackBase):
     """
     This Ansible callback plugin sends task events
     to SQS.