openstack/neutron-lib
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Merge "docs: Subscribing events using registry decorator"

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Zuul 2017-11-23 02:39:16 +00:00 committed by Gerrit Code Review
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doc/source/contributor/callbacks.rst
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@ -456,6 +456,17 @@ The output is:
Notifying...
Subscribing events using registry decorator
-------------------------------------------
Now neutron-lib supports using registry decorators to subscribe events.
There are two decorators ``has_registry_receivers``, which sets up the
class ``__new__`` method to subscribe the bound method in the callback registry
after object instantiation. ``receives`` use to decorate callback method
which must defines the resource and events.
Any class use ``receives`` must be decorated with ``has_registry_receivers``.
Testing with callbacks
----------------------