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# 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
# 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.
StackLock object
from oslo_versionedobjects import base
from oslo_versionedobjects import fields
from heat.db import api as db_api
class StackLock(base.VersionedObject,
fields = {
'engine_id': fields.StringField(nullable=True),
'stack_id': fields.StringField(),
'created_at': fields.DateTimeField(read_only=True),
'updated_at': fields.DateTimeField(nullable=True),
def create(cls, stack_id, engine_id):
return db_api.stack_lock_create(stack_id, engine_id)
def steal(cls, stack_id, old_engine_id, new_engine_id):
return db_api.stack_lock_steal(stack_id,
def release(cls, stack_id, engine_id):
return db_api.stack_lock_release(stack_id, engine_id)
def get_engine_id(cls, stack_id):
return db_api.stack_lock_get_engine_id(stack_id)