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> 
> The plugin Julien is describing won't be cross-project. It will live in the ceilometer team code base, and talk to the ceilometer services. It will run *in* nova, but it won't be a permanent part *of* nova. Any API compatibility issues will be addressed by the ceilometer team.
> 


In regard to the control_exchange, your use-case is important to understand, but there are other use-cases we might not want to support that such a feature might enable.  I believe this is the perspective Russell is coming from?

Regards,
Eric Windisch