40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
# Copyright 2011 OpenStack LLC.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from novaclient import base
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from novaclient import utils
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class Extension(utils.HookableMixin):
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"""Extension descriptor."""
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SUPPORTED_HOOKS = ('__pre_parse_args__', '__post_parse_args__')
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def __init__(self, name, module):
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self.name = name
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self.module = module
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self._parse_extension_module()
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def _parse_extension_module(self):
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self.manager_class = None
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for attr_name, attr_value in self.module.__dict__.items():
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if attr_name in self.SUPPORTED_HOOKS:
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self.add_hook(attr_name, attr_value)
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elif utils.safe_issubclass(attr_value, base.Manager):
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self.manager_class = attr_value
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def __repr__(self):
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return "<Extension '%s'>" % self.name
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