92 lines
2.9 KiB
Python
92 lines
2.9 KiB
Python
# Copyright 2013 IBM Corp.
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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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import webob.exc
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from nova.api.openstack import extensions
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from nova.openstack.common.gettextutils import _
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from nova.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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class ExtensionInfoController(object):
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def __init__(self, extension_info):
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self.extension_info = extension_info
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def _translate(self, ext):
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ext_data = {}
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ext_data['name'] = ext.name
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ext_data['alias'] = ext.alias
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ext_data['description'] = ext.__doc__
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ext_data['version'] = ext.version
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return ext_data
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def _get_extensions(self, context):
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"""Filter extensions list based on policy."""
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discoverable_extensions = dict()
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for alias, ext in self.extension_info.get_extensions().iteritems():
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authorize = extensions.soft_extension_authorizer(
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'compute', 'v3:' + alias)
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if authorize(context, action='discoverable'):
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discoverable_extensions[alias] = ext
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else:
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LOG.debug(_("Filter out extension %s from discover list"),
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alias)
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return discoverable_extensions
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@extensions.expected_errors(())
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def index(self, req):
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context = req.environ['nova.context']
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sorted_ext_list = sorted(
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self._get_extensions(context).iteritems())
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extensions = []
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for _alias, ext in sorted_ext_list:
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extensions.append(self._translate(ext))
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return dict(extensions=extensions)
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@extensions.expected_errors(404)
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def show(self, req, id):
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context = req.environ['nova.context']
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try:
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# NOTE(dprince): the extensions alias is used as the 'id' for show
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ext = self._get_extensions(context)[id]
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except KeyError:
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raise webob.exc.HTTPNotFound()
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return dict(extension=self._translate(ext))
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class ExtensionInfo(extensions.V3APIExtensionBase):
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"""Extension information."""
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name = "extensions"
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alias = "extensions"
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version = 1
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def get_resources(self):
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resources = [
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extensions.ResourceExtension(
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'extensions', ExtensionInfoController(self.extension_info),
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member_name='extension')]
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return resources
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def get_controller_extensions(self):
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return []
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