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OpenStack Study: volumes.py**** CubicPower OpenStack Study ****
# Copyright 2012 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 cinder.api import common from cinder.openstack.common import log as logging LOG = logging.getLogger(__name__)
**** CubicPower OpenStack Study **** class ViewBuilder(common.ViewBuilder): """Model a server API response as a python dictionary.""" _collection_name = "volumes"
**** CubicPower OpenStack Study **** def __init__(self): """Initialize view builder.""" super(ViewBuilder, self).__init__()
**** CubicPower OpenStack Study **** def summary_list(self, request, volumes): """Show a list of volumes without many details.""" return self._list_view(self.summary, request, volumes)
**** CubicPower OpenStack Study **** def detail_list(self, request, volumes): """Detailed view of a list of volumes.""" return self._list_view(self.detail, request, volumes)
**** CubicPower OpenStack Study **** def summary(self, request, volume): """Generic, non-detailed view of an volume.""" return { 'volume': { 'id': volume['id'], 'name': volume['display_name'], 'links': self._get_links(request, volume['id']), }, }
**** CubicPower OpenStack Study **** def detail(self, request, volume): """Detailed view of a single volume.""" return { 'volume': { 'id': volume.get('id'), 'status': volume.get('status'), 'size': volume.get('size'), 'availability_zone': volume.get('availability_zone'), 'created_at': volume.get('created_at'), 'attachments': self._get_attachments(volume), 'name': volume.get('display_name'), 'description': volume.get('display_description'), 'volume_type': self._get_volume_type(volume), 'snapshot_id': volume.get('snapshot_id'), 'source_volid': volume.get('source_volid'), 'metadata': self._get_volume_metadata(volume), 'links': self._get_links(request, volume['id']), 'user_id': volume.get('user_id'), 'bootable': str(volume.get('bootable')).lower(), 'encrypted': self._is_volume_encrypted(volume) } }
**** CubicPower OpenStack Study **** def _is_volume_encrypted(self, volume): """Determine if volume is encrypted.""" return volume.get('encryption_key_id') is not None
**** CubicPower OpenStack Study **** def _get_attachments(self, volume): """Retrieve the attachments of the volume object.""" attachments = [] if volume['attach_status'] == 'attached': d = {} volume_id = volume['id'] # note(justinsb): we use the volume id as the id of the attachments # object d['id'] = volume_id d['volume_id'] = volume_id d['server_id'] = volume['instance_uuid'] d['host_name'] = volume['attached_host'] if volume.get('mountpoint'): d['device'] = volume['mountpoint'] attachments.append(d) return attachments
**** CubicPower OpenStack Study **** def _get_volume_metadata(self, volume): """Retrieve the metadata of the volume object.""" if volume.get('volume_metadata'): metadata = volume.get('volume_metadata') return dict((item['key'], item['value']) for item in metadata) # avoid circular ref when vol is a Volume instance elif volume.get('metadata') and isinstance(volume.get('metadata'), dict): return volume['metadata'] return {}
**** CubicPower OpenStack Study **** def _get_volume_type(self, volume): """Retrieve the type the volume object.""" if volume['volume_type_id'] and volume.get('volume_type'): return volume['volume_type']['name'] else: return volume['volume_type_id']
**** CubicPower OpenStack Study **** def _list_view(self, func, request, volumes): """Provide a view for a list of volumes.""" volumes_list = [func(request, volume)['volume'] for volume in volumes] volumes_links = self._get_collection_links(request, volumes, self._collection_name) volumes_dict = dict(volumes=volumes_list) if volumes_links: volumes_dict['volumes_links'] = volumes_links return volumes_dict
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