625cab15b0
This patch adds Cluster Versioned Object as counterpart for the Cluster ORM class, and updates ConsistencyGroup, Volume, and Service Versioned Objects. Specs: https://review.openstack.org/327283 Implements: blueprint cinder-volume-active-active-support Change-Id: Ie6857cf7db52cf284d89bad704e2c679e5549966
154 lines
5.9 KiB
Python
154 lines
5.9 KiB
Python
# Copyright 2015 Intel Corporation
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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 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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from oslo_versionedobjects import fields
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@base.CinderObjectRegistry.register
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class CGSnapshot(base.CinderPersistentObject, base.CinderObject,
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base.CinderObjectDictCompat):
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VERSION = '1.0'
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OPTIONAL_FIELDS = ['consistencygroup', 'snapshots']
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fields = {
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'id': fields.UUIDField(),
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'consistencygroup_id': fields.UUIDField(nullable=True),
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'project_id': fields.StringField(),
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'user_id': fields.StringField(),
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'name': fields.StringField(nullable=True),
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'description': fields.StringField(nullable=True),
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'status': fields.StringField(nullable=True),
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'consistencygroup': fields.ObjectField('ConsistencyGroup',
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nullable=True),
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'snapshots': fields.ObjectField('SnapshotList', nullable=True),
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}
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@property
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def service_topic_queue(self):
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return self.consistencygroup.service_topic_queue
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@classmethod
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def _from_db_object(cls, context, cgsnapshot, db_cgsnapshots,
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expected_attrs=None):
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expected_attrs = expected_attrs or []
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for name, field in cgsnapshot.fields.items():
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if name in cls.OPTIONAL_FIELDS:
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continue
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value = db_cgsnapshots.get(name)
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setattr(cgsnapshot, name, value)
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if 'consistencygroup' in expected_attrs:
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consistencygroup = objects.ConsistencyGroup(context)
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consistencygroup._from_db_object(context, consistencygroup,
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db_cgsnapshots[
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'consistencygroup'])
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cgsnapshot.consistencygroup = consistencygroup
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if 'snapshots' in expected_attrs:
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snapshots = base.obj_make_list(
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context, objects.SnapshotsList(context),
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objects.Snapshots,
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db_cgsnapshots['snapshots'])
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cgsnapshot.snapshots = snapshots
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cgsnapshot._context = context
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cgsnapshot.obj_reset_changes()
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return cgsnapshot
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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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if 'consistencygroup' in updates:
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raise exception.ObjectActionError(
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action='create', reason=_('consistencygroup assigned'))
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db_cgsnapshots = db.cgsnapshot_create(self._context, updates)
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self._from_db_object(self._context, self, db_cgsnapshots)
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def obj_load_attr(self, attrname):
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if attrname not in self.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 == 'consistencygroup':
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self.consistencygroup = objects.ConsistencyGroup.get_by_id(
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self._context, self.consistencygroup_id)
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if attrname == 'snapshots':
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self.snapshots = objects.SnapshotList.get_all_for_cgsnapshot(
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self._context, self.id)
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self.obj_reset_changes(fields=[attrname])
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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 'consistencygroup' in updates:
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raise exception.ObjectActionError(
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action='save', reason=_('consistencygroup changed'))
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if 'snapshots' in updates:
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raise exception.ObjectActionError(
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action='save', reason=_('snapshots changed'))
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db.cgsnapshot_update(self._context, self.id, updates)
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self.obj_reset_changes()
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def destroy(self):
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with self.obj_as_admin():
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updated_values = db.cgsnapshot_destroy(self._context, self.id)
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self.update(updated_values)
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self.obj_reset_changes(updated_values.keys())
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@base.CinderObjectRegistry.register
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class CGSnapshotList(base.ObjectListBase, base.CinderObject):
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VERSION = '1.0'
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fields = {
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'objects': fields.ListOfObjectsField('CGSnapshot')
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}
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@classmethod
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def get_all(cls, context, filters=None):
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cgsnapshots = db.cgsnapshot_get_all(context, filters)
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return base.obj_make_list(context, cls(context), objects.CGSnapshot,
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cgsnapshots)
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@classmethod
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def get_all_by_project(cls, context, project_id, filters=None):
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cgsnapshots = db.cgsnapshot_get_all_by_project(context, project_id,
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filters)
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return base.obj_make_list(context, cls(context), objects.CGSnapshot,
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cgsnapshots)
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@classmethod
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def get_all_by_group(cls, context, group_id, filters=None):
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cgsnapshots = db.cgsnapshot_get_all_by_group(context, group_id,
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filters)
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return base.obj_make_list(context, cls(context),
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objects.CGSnapshot,
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cgsnapshots)
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