openstack/nova
Code Issues Proposed changes

objects: allow creation of objects without dict item compat

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The dict compat support in NovaObject is useful for incrementally
converting existing code over to use objects. Any brand new objects
though have no reason to support dictionary access, so there should
be a way to disable this compat mode.

This moves all the dict compat support methods out of NovaObject,
to a new class NovaObjectDictCompat. All existing objects are
updated to add this new class as a mix-in parent.

In future any completely new objects (ie ones which aren't being
used to converted existing code from dict instances) should avoid
inheriting from NovaObjectDictCompat. Existing objects should
also have this parent class removed once all callers are audited
and/or updated to ensure they do not require dict compat.

Change-Id: I03f93f0c40df6f5f7df9cefe28dff900c22294c9
This commit is contained in:
Daniel P. Berrange
2014-12-12 10:42:05 +00:00
parent 1eaa53de5e
commit 722e789309
35 changed files with 217 additions and 74 deletions
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8
nova/objects/aggregate.py
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@@ -20,7 +20,9 @@ from nova.objects import base
from nova.objects import fields
class Aggregate(base.NovaPersistentObject, base.NovaObject):
# TODO(berrange): Remove NovaObjectDictCompat
class Aggregate(base.NovaPersistentObject, base.NovaObject,
base.NovaObjectDictCompat):
# Version 1.0: Initial version
# Version 1.1: String attributes updated to support unicode
VERSION = '1.1'
@@ -147,7 +149,9 @@ class Aggregate(base.NovaPersistentObject, base.NovaObject):
return self.metadata.get('availability_zone', None)
class AggregateList(base.ObjectListBase, base.NovaObject):
# TODO(berrange): Remove NovaObjectDictCompat
class AggregateList(base.ObjectListBase, base.NovaObject,
base.NovaObjectDictCompat):
# Version 1.0: Initial version
# Version 1.1: Added key argument to get_by_host()
# Aggregate <= version 1.1