OpenStack Orchestration (Heat)
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heat/heat/objects/stack.py

201 lines
7.4 KiB

# Copyright 2014 Intel Corp.
#
# 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.
"""Stack object."""
from oslo_versionedobjects import base
from oslo_versionedobjects import fields
from heat.common import exception
from heat.common.i18n import _
from heat.db import api as db_api
from heat.objects import fields as heat_fields
from heat.objects import raw_template
from heat.objects import stack_tag
class Stack(
base.VersionedObject,
base.VersionedObjectDictCompat,
base.ComparableVersionedObject,
):
fields = {
'id': fields.StringField(),
'name': fields.StringField(),
'raw_template_id': fields.IntegerField(),
'backup': fields.BooleanField(),
'created_at': fields.DateTimeField(read_only=True),
'deleted_at': fields.DateTimeField(nullable=True),
'disable_rollback': fields.BooleanField(),
'nested_depth': fields.IntegerField(),
'owner_id': fields.StringField(nullable=True),
'stack_user_project_id': fields.StringField(nullable=True),
'tenant': fields.StringField(nullable=True),
'timeout': fields.IntegerField(nullable=True),
'updated_at': fields.DateTimeField(nullable=True),
'user_creds_id': fields.StringField(nullable=True),
'username': fields.StringField(nullable=True),
'action': fields.StringField(nullable=True),
'status': fields.StringField(nullable=True),
'status_reason': fields.StringField(nullable=True),
'raw_template': fields.ObjectField('RawTemplate'),
'convergence': fields.BooleanField(),
'current_traversal': fields.StringField(),
'current_deps': heat_fields.JsonField(),
'prev_raw_template_id': fields.IntegerField(),
'prev_raw_template': fields.ObjectField('RawTemplate'),
'tags': fields.ObjectField('StackTagList'),
'parent_resource_name': fields.StringField(nullable=True),
}
@staticmethod
def _from_db_object(context, stack, db_stack):
for field in stack.fields:
if field == 'raw_template':
stack['raw_template'] = (
raw_template.RawTemplate.get_by_id(
context, db_stack['raw_template_id']))
elif field == 'tags':
if db_stack.get(field) is not None:
stack['tags'] = stack_tag.StackTagList.get(
context, db_stack['id'])
else:
stack['tags'] = None
else:
stack[field] = db_stack.__dict__.get(field)
stack._context = context
stack.obj_reset_changes()
return stack
@classmethod
def get_root_id(cls, context, stack_id):
return db_api.stack_get_root_id(context, stack_id)
@classmethod
def get_by_id(cls, context, stack_id, **kwargs):
db_stack = db_api.stack_get(context, stack_id, **kwargs)
if not db_stack:
return None
stack = cls._from_db_object(context, cls(context), db_stack)
return stack
@classmethod
def get_by_name_and_owner_id(cls, context, stack_name, owner_id):
db_stack = db_api.stack_get_by_name_and_owner_id(
context,
stack_name,
owner_id
)
if not db_stack:
return None
stack = cls._from_db_object(context, cls(context), db_stack)
return stack
@classmethod
def get_by_name(cls, context, stack_name):
db_stack = db_api.stack_get_by_name(context, stack_name)
if not db_stack:
return None
stack = cls._from_db_object(context, cls(context), db_stack)
return stack
@classmethod
def get_all(cls, context, *args, **kwargs):
db_stacks = db_api.stack_get_all(context, *args, **kwargs)
stacks = [cls._from_db_object(context, cls(context), db_stack)
for db_stack in db_stacks]
return stacks
@classmethod
def get_all_by_owner_id(cls, context, owner_id):
db_stacks = db_api.stack_get_all_by_owner_id(context, owner_id)
stacks = [cls._from_db_object(context, cls(context), db_stack)
for db_stack in db_stacks]
return stacks
@classmethod
def count_all(cls, context, **kwargs):
return db_api.stack_count_all(context, **kwargs)
@classmethod
def count_total_resources(cls, context, stack_id):
return db_api.stack_count_total_resources(context, stack_id)
@classmethod
def create(cls, context, values):
return cls._from_db_object(context, cls(context),
db_api.stack_create(context, values))
@classmethod
def update_by_id(cls, context, stack_id, values):
"""Update and return (boolean) if it was updated.
Note: the underlying stack_update filters by current_traversal
and stack_id.
"""
return db_api.stack_update(context, stack_id, values)
@classmethod
def select_and_update(cls, context, stack_id, values, exp_trvsl=None):
"""Update the stack by selecting on traversal ID.
Uses UPDATE ... WHERE (compare and swap) to catch any concurrent
update problem.
If the stack is found with given traversal, it is updated.
If there occurs a race while updating, only one will succeed and
other will get return value of False.
"""
return db_api.stack_update(context, stack_id, values,
exp_trvsl=exp_trvsl)
@classmethod
def persist_state_and_release_lock(cls, context, stack_id,
engine_id, values):
return db_api.persist_state_and_release_lock(context, stack_id,
engine_id, values)
@classmethod
def delete(cls, context, stack_id):
db_api.stack_delete(context, stack_id)
def update_and_save(self, values):
has_updated = self.__class__.update_by_id(self._context,
self.id, values)
if not has_updated:
raise exception.NotFound(_('Attempt to update a stack with id: '
'%(id)s %(traversal)s %(msg)s') % {
'id': self.id,
'traversal': self.current_traversal,
'msg': 'that does not exist'})
def __eq__(self, another):
self.refresh() # to make test object comparison work well
return super(Stack, self).__eq__(another)
def refresh(self):
db_stack = db_api.stack_get(
self._context, self.id, show_deleted=True)
db_stack.refresh()
return self.__class__._from_db_object(
self._context,
self,
db_stack
)
@classmethod
def encrypt_hidden_parameters(cls, tmpl):
raw_template.RawTemplate.encrypt_hidden_parameters(tmpl)