def get_bdm_metadata(self, context, instance, block_device_info):
"""Builds a metadata object for instance devices, that maps the user
provided tag to the hypervisor assigned device address.
"""
# block_device_info does not contain tags information.
bdm_obj_list = objects.BlockDeviceMappingList.get_by_instance_uuid(
context, instance.uuid)
# create a map between BDM object and its device name.
bdm_obj_map = {bdm.device_name: bdm for bdm in bdm_obj_list}
bdm_metadata = []
for bdm in itertools.chain(block_device_info['block_device_mapping'],
block_device_info['ephemerals'],
[block_device_info['root_disk']]):
# NOTE(claudiub): ephemerals have device_name instead of
# mount_device.
device_name = bdm.get('mount_device') or bdm.get('device_name')
bdm_obj = bdm_obj_map.get(device_name)
if bdm_obj and 'tag' in bdm_obj and bdm_obj.tag:
bus = self._get_device_bus(bdm)
device = objects.DiskMetadata(bus=bus, tags=[bdm_obj.tag])
bdm_metadata.append(device)
return bdm_metadata
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import mock
from oslo_serialization import jsonutils
from nova import objects
from nova.tests.unit.objects import test_objects
fake_net_interface_meta = objects.NetworkInterfaceMetadata(
mac='52:54:00:f6:35:8f',
tags=['mytag1'],
bus=objects.PCIDeviceBus(address='0000:00:03.0'),
vlan=1000)
fake_pci_disk_meta = objects.DiskMetadata(
bus=objects.PCIDeviceBus(address='0000:00:09.0'), tags=['nfvfunc3'])
fake_obj_devices_metadata = objects.InstanceDeviceMetadata(
devices=[fake_net_interface_meta, fake_pci_disk_meta])
fake_devices_metadata = fake_obj_devices_metadata._to_json()
fake_db_metadata = {
'created_at': None,
'updated_at': None,
'deleted_at': None,
'deleted': 0,
'id': 1,
'device_metadata': fake_obj_devices_metadata._to_json()
}
fake_old_db_metadata = dict(fake_db_metadata) # copy