85 lines
3.3 KiB
Python
85 lines
3.3 KiB
Python
# Copyright 2013 OpenStack Foundation
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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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"""The Extended Volumes API extension."""
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from nova.api.openstack import api_version_request
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from nova.api.openstack import extensions
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from nova.api.openstack import wsgi
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from nova import objects
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ALIAS = "os-extended-volumes"
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soft_authorize = extensions.os_compute_soft_authorizer(ALIAS)
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class ExtendedVolumesController(wsgi.Controller):
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def __init__(self, *args, **kwargs):
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super(ExtendedVolumesController, self).__init__(*args, **kwargs)
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def _extend_server(self, context, server, req, bdms):
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volumes_attached = []
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for bdm in bdms:
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if bdm.get('volume_id'):
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volume_attached = {'id': bdm['volume_id']}
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if api_version_request.is_supported(req, min_version='2.3'):
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volume_attached['delete_on_termination'] = (
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bdm['delete_on_termination'])
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volumes_attached.append(volume_attached)
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key = "%s:volumes_attached" % ExtendedVolumes.alias
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server[key] = volumes_attached
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@wsgi.extends
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def show(self, req, resp_obj, id):
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context = req.environ['nova.context']
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if soft_authorize(context):
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server = resp_obj.obj['server']
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bdms = objects.BlockDeviceMappingList.bdms_by_instance_uuid(
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context, [server['id']])
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instance_bdms = self._get_instance_bdms(bdms, server)
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self._extend_server(context, server, req, instance_bdms)
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@wsgi.extends
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def detail(self, req, resp_obj):
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context = req.environ['nova.context']
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if soft_authorize(context):
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servers = list(resp_obj.obj['servers'])
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instance_uuids = [server['id'] for server in servers]
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bdms = objects.BlockDeviceMappingList.bdms_by_instance_uuid(
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context, instance_uuids)
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for server in servers:
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instance_bdms = self._get_instance_bdms(bdms, server)
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self._extend_server(context, server, req, instance_bdms)
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def _get_instance_bdms(self, bdms, server):
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# server['id'] is guaranteed to be in the cache due to
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# the core API adding it in the 'detail' or 'show' method.
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# If that instance has since been deleted, it won't be in the
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# 'bdms' dictionary though, so use 'get' to avoid KeyErrors.
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return bdms.get(server['id'], [])
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class ExtendedVolumes(extensions.V21APIExtensionBase):
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"""Extended Volumes support."""
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name = "ExtendedVolumes"
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alias = ALIAS
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version = 1
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def get_controller_extensions(self):
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controller = ExtendedVolumesController()
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extension = extensions.ControllerExtension(self, 'servers', controller)
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return [extension]
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def get_resources(self):
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return []
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