104 lines
3.7 KiB
Python
104 lines
3.7 KiB
Python
# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
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# All Rights Reserved.
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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 copy
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from oslo_serialization import jsonutils
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from oslo_utils import versionutils
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from nova import objects
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from nova.objects import base
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from nova.objects import fields
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@base.NovaObjectRegistry.register
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class PciDevicePool(base.NovaObject):
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# Version 1.0: Initial version
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# Version 1.1: Added numa_node field
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VERSION = '1.1'
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fields = {
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'product_id': fields.StringField(),
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'vendor_id': fields.StringField(),
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'numa_node': fields.IntegerField(nullable=True),
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'tags': fields.DictOfNullableStringsField(),
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'count': fields.IntegerField(),
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}
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def obj_make_compatible(self, primitive, target_version):
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target_version = versionutils.convert_version_to_tuple(target_version)
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if target_version < (1, 1) and 'numa_node' in primitive:
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del primitive['numa_node']
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# NOTE(pmurray): before this object existed the pci device pool data was
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# stored as a dict. For backward compatibility we need to be able to read
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# it in from a dict
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@classmethod
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def from_dict(cls, value):
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pool_dict = copy.copy(value)
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pool = cls()
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pool.vendor_id = pool_dict.pop("vendor_id")
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pool.product_id = pool_dict.pop("product_id")
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pool.numa_node = pool_dict.pop("numa_node", None)
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pool.count = pool_dict.pop("count")
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pool.tags = pool_dict
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return pool
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# NOTE(sbauza): Before using objects, pci stats was a list of
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# dictionaries not having tags. For compatibility with other modules, let's
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# create a reversible method
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def to_dict(self):
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pci_pool = base.obj_to_primitive(self)
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tags = pci_pool.pop('tags', {})
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for k, v in tags.items():
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pci_pool[k] = v
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return pci_pool
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@base.NovaObjectRegistry.register
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class PciDevicePoolList(base.ObjectListBase, base.NovaObject):
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# Version 1.0: Initial version
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# PciDevicePool <= 1.0
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# Version 1.1: PciDevicePool version 1.1
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VERSION = '1.1'
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fields = {
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'objects': fields.ListOfObjectsField('PciDevicePool'),
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}
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def from_pci_stats(pci_stats):
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"""Create and return a PciDevicePoolList from the data stored in the db,
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which can be either the serialized object, or, prior to the creation of the
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device pool objects, a simple dict or a list of such dicts.
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"""
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pools = []
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if isinstance(pci_stats, str):
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try:
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pci_stats = jsonutils.loads(pci_stats)
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except (ValueError, TypeError):
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pci_stats = None
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if pci_stats:
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# Check for object-ness, or old-style storage format.
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if 'nova_object.namespace' in pci_stats:
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return objects.PciDevicePoolList.obj_from_primitive(pci_stats)
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else:
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# This can be either a dict or a list of dicts
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if isinstance(pci_stats, list):
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pools = [objects.PciDevicePool.from_dict(stat)
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for stat in pci_stats]
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else:
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pools = [objects.PciDevicePool.from_dict(pci_stats)]
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return objects.PciDevicePoolList(objects=pools)
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