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Thanks Angus!
Yes, if this rpc notification mechanism works for all other components, e.g., Neutron, in addition to Nova, which seems to be the only documented component working with this notification system.

For example, can we do something like

Network.instance.shutdown/.end

Or 
Storage.instance.shutdown/.end

Or 
Image.instance.shutdown/.end 
...

-----Original Message-----
From: Angus Salkeld [mailto:asalkeld at redhat.com] 
Sent: Monday, October 28, 2013 4:36 PM
To: openstack-dev at lists.openstack.org
Subject: Re: [openstack-dev] [TripleO][Nova][neutron][Heat][Oslo][Ceilometer][Havana]Single Subscription Point for event notification

On 28/10/13 22:30 +0000, Qing He wrote:
>All,
>I found multiple places/components you can get event alarms, e.g., Heat, Ceilometer, Oslo, Nova etc, notification. But I fail to find any documents as to how to do it in the respective component documents.
>
>I 'm  wondering if there is document as to if there is a single API entry point where you can subscribe and get event notification from all components, such as Nova, Neutron.

Hi,

If you are talking about rpc notifications, then this is one wiki page I know about:
https://wiki.openstack.org/wiki/SystemUsageData

(I have just added some heat notifications to it).

-Angus

>
>Thanks,
>
>Qing
>
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