OpenStack Block Storage (Cinder)
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

170 lines
6.7 KiB

# Copyright 2016 EMC Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_versionedobjects import fields
from cinder import db
from cinder import exception
from cinder.i18n import _
from cinder import objects
from cinder.objects import base
@base.CinderObjectRegistry.register
class GroupSnapshot(base.CinderPersistentObject, base.CinderObject,
base.CinderObjectDictCompat, base.ClusteredObject):
VERSION = '1.0'
OPTIONAL_FIELDS = ['group', 'snapshots']
fields = {
'id': fields.UUIDField(),
'group_id': fields.UUIDField(nullable=False),
'project_id': fields.StringField(nullable=True),
'user_id': fields.StringField(nullable=True),
'name': fields.StringField(nullable=True),
'description': fields.StringField(nullable=True),
'status': fields.StringField(nullable=True),
'group_type_id': fields.UUIDField(nullable=True),
'group': fields.ObjectField('Group', nullable=True),
'snapshots': fields.ObjectField('SnapshotList', nullable=True),
}
@property
def host(self):
return self.group.host
@property
def cluster_name(self):
return self.group.cluster_name
@classmethod
def _from_db_object(cls, context, group_snapshot, db_group_snapshots,
expected_attrs=None):
expected_attrs = expected_attrs or []
for name, field in group_snapshot.fields.items():
if name in cls.OPTIONAL_FIELDS:
continue
value = db_group_snapshots.get(name)
setattr(group_snapshot, name, value)
if 'group' in expected_attrs:
group = objects.Group(context)
group._from_db_object(context, group,
db_group_snapshots['group'])
group_snapshot.group = group
if 'snapshots' in expected_attrs:
snapshots = base.obj_make_list(
context, objects.SnapshotsList(context),
objects.Snapshots,
db_group_snapshots['snapshots'])
group_snapshot.snapshots = snapshots
group_snapshot._context = context
group_snapshot.obj_reset_changes()
return group_snapshot
def create(self):
if self.obj_attr_is_set('id'):
raise exception.ObjectActionError(action='create',
reason=_('already_created'))
updates = self.cinder_obj_get_changes()
if 'group' in updates:
raise exception.ObjectActionError(
action='create', reason=_('group assigned'))
db_group_snapshots = db.group_snapshot_create(self._context, updates)
self._from_db_object(self._context, self, db_group_snapshots)
def obj_load_attr(self, attrname):
if attrname not in self.OPTIONAL_FIELDS:
raise exception.ObjectActionError(
action='obj_load_attr',
reason=_('attribute %s not lazy-loadable') % attrname)
if not self._context:
raise exception.OrphanedObjectError(method='obj_load_attr',
objtype=self.obj_name())
if attrname == 'group':
self.group = objects.Group.get_by_id(
self._context, self.group_id)
if attrname == 'snapshots':
self.snapshots = objects.SnapshotList.get_all_for_group_snapshot(
self._context, self.id)
self.obj_reset_changes(fields=[attrname])
def save(self):
updates = self.cinder_obj_get_changes()
if updates:
if 'group' in updates:
raise exception.ObjectActionError(
action='save', reason=_('group changed'))
if 'snapshots' in updates:
raise exception.ObjectActionError(
action='save', reason=_('snapshots changed'))
db.group_snapshot_update(self._context, self.id, updates)
self.obj_reset_changes()
def destroy(self):
with self.obj_as_admin():
updated_values = db.group_snapshot_destroy(self._context, self.id)
self.update(updated_values)
self.obj_reset_changes(updated_values.keys())
@base.CinderObjectRegistry.register
class GroupSnapshotList(base.ObjectListBase, base.CinderObject):
VERSION = '1.0'
fields = {
'objects': fields.ListOfObjectsField('GroupSnapshot')
}
@classmethod
def get_all(cls, context, filters=None, marker=None, limit=None,
offset=None, sort_keys=None, sort_dirs=None):
group_snapshots = db.group_snapshot_get_all(context,
filters=filters,
marker=marker,
limit=limit,
offset=offset,
sort_keys=sort_keys,
sort_dirs=sort_dirs)
return base.obj_make_list(context, cls(context), objects.GroupSnapshot,
group_snapshots)
@classmethod
def get_all_by_project(cls, context, project_id, filters=None, marker=None,
limit=None, offset=None, sort_keys=None,
sort_dirs=None):
group_snapshots = db.group_snapshot_get_all_by_project(
context, project_id, filters=filters, marker=marker,
limit=limit, offset=offset, sort_keys=sort_keys,
sort_dirs=sort_dirs)
return base.obj_make_list(context, cls(context), objects.GroupSnapshot,
group_snapshots)
@classmethod
def get_all_by_group(cls, context, group_id, filters=None, marker=None,
limit=None, offset=None, sort_keys=None,
sort_dirs=None):
group_snapshots = db.group_snapshot_get_all_by_group(
context, group_id, filters=filters, marker=marker, limit=limit,
offset=offset, sort_keys=sort_keys, sort_dirs=sort_dirs)
return base.obj_make_list(context, cls(context), objects.GroupSnapshot,
group_snapshots)