106 lines
4.0 KiB
Python
106 lines
4.0 KiB
Python
# Copyright 2014 Red Hat Inc.
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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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from nova import db
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from nova import exception
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from nova.objects import base
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from nova.objects import fields
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from nova.virt import hardware
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class InstanceNUMACell(base.NovaObject):
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# Version 1.0: Initial version
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# Version 1.1: Add pagesize field
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VERSION = '1.1'
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fields = {
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'id': fields.IntegerField(read_only=True),
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'cpuset': fields.SetOfIntegersField(),
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'memory': fields.IntegerField(),
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'pagesize': fields.IntegerField(nullable=True),
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}
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class InstanceNUMATopology(base.NovaObject):
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# Version 1.0: Initial version
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# Version 1.1: Takes into account pagesize
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VERSION = '1.1'
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fields = {
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# NOTE(danms): The 'id' field is no longer used and should be
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# removed in the future when convenient
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'id': fields.IntegerField(),
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'instance_uuid': fields.UUIDField(),
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'cells': fields.ListOfObjectsField('InstanceNUMACell'),
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}
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@classmethod
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def obj_from_topology(cls, topology):
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if not isinstance(topology, hardware.VirtNUMAInstanceTopology):
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raise exception.ObjectActionError(action='obj_from_topology',
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reason='invalid topology class')
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if topology:
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cells = []
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for topocell in topology.cells:
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pagesize = (topocell.pagesize
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and topocell.pagesize.size_kb or None)
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cell = InstanceNUMACell(id=topocell.id, cpuset=topocell.cpuset,
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memory=topocell.memory,
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pagesize=pagesize)
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cells.append(cell)
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return cls(cells=cells)
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def topology_from_obj(self):
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cells = []
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for objcell in self.cells:
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pagesize = (
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objcell.pagesize and
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hardware.VirtPageSize(objcell.pagesize) or None)
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cell = hardware.VirtNUMATopologyCellInstance(objcell.id,
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objcell.cpuset,
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objcell.memory,
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pagesize=pagesize)
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cells.append(cell)
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return hardware.VirtNUMAInstanceTopology(cells=cells)
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@base.remotable
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def create(self, context):
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topology = self.topology_from_obj()
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if not topology:
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return
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values = {'numa_topology': topology.to_json()}
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db.instance_extra_update_by_uuid(context, self.instance_uuid,
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values)
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self.obj_reset_changes()
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@base.remotable_classmethod
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def get_by_instance_uuid(cls, context, instance_uuid):
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db_topology = db.instance_extra_get_by_instance_uuid(
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context, instance_uuid, columns=['numa_topology'])
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if not db_topology:
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raise exception.NumaTopologyNotFound(instance_uuid=instance_uuid)
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if db_topology['numa_topology'] is None:
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return None
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topo = hardware.VirtNUMAInstanceTopology.from_json(
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db_topology['numa_topology'])
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obj_topology = cls.obj_from_topology(topo)
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obj_topology.id = db_topology['id']
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obj_topology.instance_uuid = db_topology['instance_uuid']
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# NOTE (ndipanov) not really needed as we never save, but left for
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# consistency
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obj_topology.obj_reset_changes()
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return obj_topology
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