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# Copyright (C) 2016, Red Hat, Inc.
#
# 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 oslo_serialization import jsonutils
from oslo_utils import versionutils
from nova.db.main import api as db
from nova.objects import base
from nova.objects import fields
@base.NovaObjectRegistry.register
class DeviceBus(base.NovaObject):
VERSION = '1.0'
@base.NovaObjectRegistry.register
class PCIDeviceBus(DeviceBus):
VERSION = '1.0'
fields = {
'address': fields.PCIAddressField(),
}
@base.NovaObjectRegistry.register
class USBDeviceBus(DeviceBus):
VERSION = '1.0'
fields = {
'address': fields.USBAddressField(),
}
@base.NovaObjectRegistry.register
class SCSIDeviceBus(DeviceBus):
VERSION = '1.0'
fields = {
'address': fields.SCSIAddressField(),
}
@base.NovaObjectRegistry.register
class IDEDeviceBus(DeviceBus):
VERSION = '1.0'
fields = {
'address': fields.IDEAddressField(),
}
@base.NovaObjectRegistry.register
class XenDeviceBus(DeviceBus):
VERSION = '1.0'
fields = {
'address': fields.XenAddressField(),
}
@base.NovaObjectRegistry.register
class DeviceMetadata(base.NovaObject):
VERSION = '1.0'
fields = {
'bus': fields.ObjectField("DeviceBus", subclasses=True),
'tags': fields.ListOfStringsField(),
}
@base.NovaObjectRegistry.register
class NetworkInterfaceMetadata(DeviceMetadata):
# Version 1.0: Initial version
# Version 1.1: Add vlans field
# Version 1.2: Add vf_trusted field
VERSION = '1.2'
fields = {
'mac': fields.MACAddressField(),
'vlan': fields.IntegerField(),
'vf_trusted': fields.BooleanField(default=False),
}
def obj_make_compatible(self, primitive, target_version):
target_version = versionutils.convert_version_to_tuple(target_version)
if target_version < (1, 1) and 'vlan' in primitive:
del primitive['vlan']
if target_version < (1, 2) and 'vf_trusted' in primitive:
del primitive['vf_trusted']
@base.NovaObjectRegistry.register
class DiskMetadata(DeviceMetadata):
VERSION = '1.0'
fields = {
'serial': fields.StringField(nullable=True),
'path': fields.StringField(nullable=True),
}
@base.NovaObjectRegistry.register
class InstanceDeviceMetadata(base.NovaObject):
VERSION = '1.0'
fields = {
'devices': fields.ListOfObjectsField('DeviceMetadata',
subclasses=True),
}
@classmethod
def obj_from_db(cls, context, db_dev_meta):
primitive = jsonutils.loads(db_dev_meta)
device_metadata = cls.obj_from_primitive(primitive)
return device_metadata
@base.remotable_classmethod
def get_by_instance_uuid(cls, context, instance_uuid):
db_extra = db.instance_extra_get_by_instance_uuid(
context, instance_uuid, columns=['device_metadata'])
if not db_extra or db_extra['device_metadata'] is None:
return None
primitive = jsonutils.loads(db_extra['device_metadata'])
device_metadata = cls.obj_from_primitive(primitive)
return device_metadata
def _to_json(self):
return jsonutils.dumps(self.obj_to_primitive())
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