938cb0c5ab
Currently each Versioned Object needs to implement its own get_by_id, with this patch they don't need anymore, since it will be included in the base class CinderObject and it will work for all the objects. This will help for other things like having a refresh method or conditional updates in the objects. Related-Bug: #1490944 Related-Bug: #1238093 Related-Bug: #1490946 Related-Bug: #1469659 Change-Id: I355dc8eaefed93003533ee083f74acd1315f057e
305 lines
12 KiB
Python
305 lines
12 KiB
Python
# Copyright 2015 SimpliVity Corp.
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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 oslo_config import cfg
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from oslo_log import log as logging
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from oslo_utils import versionutils
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from oslo_versionedobjects import fields
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from cinder import db
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from cinder import exception
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from cinder.i18n import _
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from cinder import objects
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from cinder.objects import base
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CONF = cfg.CONF
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OPTIONAL_FIELDS = ['metadata', 'admin_metadata',
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'volume_type', 'volume_attachment']
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LOG = logging.getLogger(__name__)
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@base.CinderObjectRegistry.register
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class Volume(base.CinderPersistentObject, base.CinderObject,
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base.CinderObjectDictCompat, base.CinderComparableObject):
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# Version 1.0: Initial version
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# Version 1.1: Added metadata, admin_metadata, volume_attachment, and
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# volume_type
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VERSION = '1.1'
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DEFAULT_EXPECTED_ATTR = ('admin_metadata', 'metadata')
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fields = {
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'id': fields.UUIDField(),
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'_name_id': fields.UUIDField(nullable=True),
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'ec2_id': fields.UUIDField(nullable=True),
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'user_id': fields.UUIDField(nullable=True),
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'project_id': fields.UUIDField(nullable=True),
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'snapshot_id': fields.UUIDField(nullable=True),
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'host': fields.StringField(nullable=True),
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'size': fields.IntegerField(),
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'availability_zone': fields.StringField(),
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'status': fields.StringField(),
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'attach_status': fields.StringField(),
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'migration_status': fields.StringField(nullable=True),
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'scheduled_at': fields.DateTimeField(nullable=True),
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'launched_at': fields.DateTimeField(nullable=True),
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'terminated_at': fields.DateTimeField(nullable=True),
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'display_name': fields.StringField(nullable=True),
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'display_description': fields.StringField(nullable=True),
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'provider_id': fields.UUIDField(nullable=True),
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'provider_location': fields.StringField(nullable=True),
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'provider_auth': fields.StringField(nullable=True),
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'provider_geometry': fields.StringField(nullable=True),
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'volume_type_id': fields.UUIDField(nullable=True),
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'source_volid': fields.UUIDField(nullable=True),
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'encryption_key_id': fields.UUIDField(nullable=True),
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'consistencygroup_id': fields.UUIDField(nullable=True),
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'deleted': fields.BooleanField(default=False),
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'bootable': fields.BooleanField(default=False),
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'multiattach': fields.BooleanField(default=False),
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'replication_status': fields.StringField(nullable=True),
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'replication_extended_status': fields.StringField(nullable=True),
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'replication_driver_data': fields.StringField(nullable=True),
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'previous_status': fields.StringField(nullable=True),
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'metadata': fields.DictOfStringsField(nullable=True),
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'admin_metadata': fields.DictOfStringsField(nullable=True),
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'volume_type': fields.ObjectField('VolumeType', nullable=True),
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'volume_attachment': fields.ObjectField('VolumeAttachmentList',
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nullable=True),
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}
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# NOTE(thangp): obj_extra_fields is used to hold properties that are not
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# usually part of the model
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obj_extra_fields = ['name', 'name_id']
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@property
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def name_id(self):
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return self.id if not self._name_id else self._name_id
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@name_id.setter
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def name_id(self, value):
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self._name_id = value
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@property
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def name(self):
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return CONF.volume_name_template % self.name_id
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def __init__(self, *args, **kwargs):
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super(Volume, self).__init__(*args, **kwargs)
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self._orig_metadata = {}
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self._orig_admin_metadata = {}
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self._reset_metadata_tracking()
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def obj_reset_changes(self, fields=None):
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super(Volume, self).obj_reset_changes(fields)
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self._reset_metadata_tracking(fields=fields)
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def _reset_metadata_tracking(self, fields=None):
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if fields is None or 'metadata' in fields:
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self._orig_metadata = (dict(self.metadata)
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if 'metadata' in self else {})
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if fields is None or 'admin_metadata' in fields:
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self._orig_admin_metadata = (dict(self.admin_metadata)
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if 'admin_metadata' in self
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else {})
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def obj_what_changed(self):
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changes = super(Volume, self).obj_what_changed()
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if 'metadata' in self and self.metadata != self._orig_metadata:
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changes.add('metadata')
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if ('admin_metadata' in self and
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self.admin_metadata != self._orig_admin_metadata):
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changes.add('admin_metadata')
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return changes
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def obj_make_compatible(self, primitive, target_version):
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"""Make an object representation compatible with a target version."""
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super(Volume, self).obj_make_compatible(primitive, target_version)
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target_version = versionutils.convert_version_to_tuple(target_version)
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@staticmethod
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def _from_db_object(context, volume, db_volume, expected_attrs=None):
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if expected_attrs is None:
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expected_attrs = []
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for name, field in volume.fields.items():
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if name in OPTIONAL_FIELDS:
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continue
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value = db_volume.get(name)
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if isinstance(field, fields.IntegerField):
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value = value or 0
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volume[name] = value
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# Get data from db_volume object that was queried by joined query
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# from DB
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if 'metadata' in expected_attrs:
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volume.metadata = {}
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metadata = db_volume.get('volume_metadata', [])
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if metadata:
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volume.metadata = {item['key']: item['value']
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for item in metadata}
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if 'admin_metadata' in expected_attrs:
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volume.admin_metadata = {}
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metadata = db_volume.get('volume_admin_metadata', [])
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if metadata:
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volume.admin_metadata = {item['key']: item['value']
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for item in metadata}
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if 'volume_type' in expected_attrs:
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db_volume_type = db_volume.get('volume_type')
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if db_volume_type:
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volume.volume_type = objects.VolumeType._from_db_object(
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context, objects.VolumeType(), db_volume_type,
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expected_attrs='extra_specs')
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if 'volume_attachment' in expected_attrs:
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attachments = base.obj_make_list(
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context, objects.VolumeAttachmentList(context),
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objects.VolumeAttachment,
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db_volume.get('volume_attachment'))
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volume.volume_attachment = attachments
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volume._context = context
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volume.obj_reset_changes()
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return volume
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@base.remotable
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def create(self):
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if self.obj_attr_is_set('id'):
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raise exception.ObjectActionError(action='create',
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reason=_('already created'))
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updates = self.cinder_obj_get_changes()
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db_volume = db.volume_create(self._context, updates)
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self._from_db_object(self._context, self, db_volume)
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@base.remotable
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def save(self):
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updates = self.cinder_obj_get_changes()
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if updates:
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if 'metadata' in updates:
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# Metadata items that are not specified in the
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# self.metadata will be deleted
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metadata = updates.pop('metadata', None)
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self.metadata = db.volume_metadata_update(self._context,
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self.id, metadata,
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True)
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if self._context.is_admin and 'admin_metadata' in updates:
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metadata = updates.pop('admin_metadata', None)
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self.admin_metadata = db.volume_admin_metadata_update(
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self._context, self.id, metadata, True)
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db.volume_update(self._context, self.id, updates)
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self.obj_reset_changes()
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@base.remotable
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def destroy(self):
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with self.obj_as_admin():
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db.volume_destroy(self._context, self.id)
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def obj_load_attr(self, attrname):
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if attrname not in OPTIONAL_FIELDS:
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raise exception.ObjectActionError(
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action='obj_load_attr',
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reason=_('attribute %s not lazy-loadable') % attrname)
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if not self._context:
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raise exception.OrphanedObjectError(method='obj_load_attr',
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objtype=self.obj_name())
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if attrname == 'metadata':
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self.metadata = db.volume_metadata_get(self._context, self.id)
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elif attrname == 'admin_metadata':
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self.admin_metadata = {}
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if self._context.is_admin:
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self.admin_metadata = db.volume_admin_metadata_get(
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self._context, self.id)
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elif attrname == 'volume_type':
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self.volume_type = objects.VolumeType.get_by_id(
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self._context, self.volume_type_id)
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elif attrname == 'volume_attachment':
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attachments = objects.VolumeAttachmentList.get_all_by_volume_id(
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self._context, self.id)
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self.volume_attachment = attachments
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self.obj_reset_changes(fields=[attrname])
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def delete_metadata_key(self, key):
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db.volume_metadata_delete(self._context, self.id, key)
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md_was_changed = 'metadata' in self.obj_what_changed()
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del self.metadata[key]
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self._orig_metadata.pop(key, None)
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if not md_was_changed:
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self.obj_reset_changes(['metadata'])
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@base.CinderObjectRegistry.register
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class VolumeList(base.ObjectListBase, base.CinderObject):
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VERSION = '1.1'
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fields = {
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'objects': fields.ListOfObjectsField('Volume'),
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}
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child_versions = {
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'1.0': '1.0',
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'1.1': '1.1',
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}
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@base.remotable_classmethod
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def get_all(cls, context, marker, limit, sort_keys=None, sort_dirs=None,
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filters=None, offset=None):
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volumes = db.volume_get_all(context, marker, limit,
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sort_keys=sort_keys, sort_dirs=sort_dirs,
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filters=filters, offset=offset)
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expected_attrs = ['admin_metadata', 'metadata']
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return base.obj_make_list(context, cls(context), objects.Volume,
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volumes, expected_attrs=expected_attrs)
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@base.remotable_classmethod
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def get_all_by_host(cls, context, host, filters=None):
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volumes = db.volume_get_all_by_host(context, host, filters)
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expected_attrs = ['admin_metadata', 'metadata']
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return base.obj_make_list(context, cls(context), objects.Volume,
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volumes, expected_attrs=expected_attrs)
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@base.remotable_classmethod
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def get_all_by_group(cls, context, group_id, filters=None):
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volumes = db.volume_get_all_by_group(context, group_id, filters)
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expected_attrs = ['admin_metadata', 'metadata']
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return base.obj_make_list(context, cls(context), objects.Volume,
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volumes, expected_attrs=expected_attrs)
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@base.remotable_classmethod
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def get_all_by_project(cls, context, project_id, marker, limit,
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sort_keys=None, sort_dirs=None, filters=None,
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offset=None):
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volumes = db.volume_get_all_by_project(context, project_id, marker,
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limit, sort_keys=sort_keys,
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sort_dirs=sort_dirs,
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filters=filters, offset=offset)
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expected_attrs = ['admin_metadata', 'metadata']
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return base.obj_make_list(context, cls(context), objects.Volume,
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volumes, expected_attrs=expected_attrs)
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