100 lines
3.9 KiB
Python
100 lines
3.9 KiB
Python
# 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.db import api as db
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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 BandwidthUsage(base.NovaPersistentObject, base.NovaObject):
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# Version 1.0: Initial version
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# Version 1.1: Add use_slave to get_by_instance_uuid_and_mac
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# Version 1.2: Add update_cells to create
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VERSION = '1.2'
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fields = {
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'instance_uuid': fields.UUIDField(),
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'mac': fields.StringField(),
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'start_period': fields.DateTimeField(),
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'last_refreshed': fields.DateTimeField(),
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'bw_in': fields.IntegerField(),
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'bw_out': fields.IntegerField(),
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'last_ctr_in': fields.IntegerField(),
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'last_ctr_out': fields.IntegerField()
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}
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@staticmethod
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def _from_db_object(context, bw_usage, db_bw_usage):
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for field in bw_usage.fields:
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if field == 'instance_uuid':
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setattr(bw_usage, field, db_bw_usage['uuid'])
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else:
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setattr(bw_usage, field, db_bw_usage[field])
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bw_usage._context = context
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bw_usage.obj_reset_changes()
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return bw_usage
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@staticmethod
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@db.select_db_reader_mode
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def _db_bw_usage_get(context, uuid, start_period, mac, use_slave=False):
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return db.bw_usage_get(context, uuid=uuid, start_period=start_period,
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mac=mac)
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@base.serialize_args
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@base.remotable_classmethod
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def get_by_instance_uuid_and_mac(cls, context, instance_uuid, mac,
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start_period=None, use_slave=False):
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db_bw_usage = cls._db_bw_usage_get(context, uuid=instance_uuid,
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start_period=start_period, mac=mac,
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use_slave=use_slave)
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if db_bw_usage:
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return cls._from_db_object(context, cls(), db_bw_usage)
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@base.serialize_args
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@base.remotable
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def create(self, uuid, mac, bw_in, bw_out, last_ctr_in,
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last_ctr_out, start_period=None, last_refreshed=None,
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update_cells=True):
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db_bw_usage = db.bw_usage_update(
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self._context, uuid, mac, start_period, bw_in, bw_out,
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last_ctr_in, last_ctr_out, last_refreshed=last_refreshed,
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update_cells=update_cells)
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self._from_db_object(self._context, self, db_bw_usage)
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@base.NovaObjectRegistry.register
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class BandwidthUsageList(base.ObjectListBase, base.NovaObject):
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# Version 1.0: Initial version
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# Version 1.1: Add use_slave to get_by_uuids
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# Version 1.2: BandwidthUsage <= version 1.2
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VERSION = '1.2'
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fields = {
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'objects': fields.ListOfObjectsField('BandwidthUsage'),
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}
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@staticmethod
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@db.select_db_reader_mode
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def _db_bw_usage_get_by_uuids(context, uuids, start_period,
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use_slave=False):
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return db.bw_usage_get_by_uuids(context, uuids=uuids,
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start_period=start_period)
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@base.serialize_args
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@base.remotable_classmethod
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def get_by_uuids(cls, context, uuids, start_period=None, use_slave=False):
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db_bw_usages = cls._db_bw_usage_get_by_uuids(context, uuids=uuids,
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start_period=start_period,
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use_slave=use_slave)
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return base.obj_make_list(context, cls(), BandwidthUsage, db_bw_usages)
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