python-cinderclient/cinderclient/extension.py
dineshbhor a01a3e1b7f Move old oslo-incubator code out of openstack/common
As part of the first community-wide goal, teams were asked to
remove the openstack/common package of their projects if one
existed. This was a byproduct of the old oslo-incubator form
of syncing common functionality.

The package, apiclient, was moved to a top level location and
cliutils was moved to the common module. There are no oslo
specific libraries, the recommended solution is to move it in
tree and maintain it there.

Change-Id: Iee52004bd33c19d63133577ff466164b85fd6ca6
2016-11-03 18:29:31 +05:30

41 lines
1.4 KiB
Python

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