openstack/neutron
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Merge "Add remote vs local FAQ for callbacks"

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Jenkins 2016-03-13 15:10:53 +00:00 committed by Gerrit Code Review
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doc/source/devref/callbacks.rst
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@ -329,6 +329,13 @@ The output is:
FAQ
---
Are callbacks a mechanism for remote or local communication (intra vs inter-process)?
Callbacks as described in this document are a local communication mechanism that
allows multiple entities in the same process space to communicate with one another.
For Neutron specific remote (IPC) mechanisms, you can see read more in
:doc:`RPC API <rpc_api>` or :doc:`Messaging callbacks <rpc_callbacks>`.
Can I use the callbacks registry to subscribe and notify non-core resources and events?
Short answer is yes. The callbacks module defines literals for what are considered core Neutron