# Copyright 2015 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.
"""Snapshot object."""
from oslo_versionedobjects import base
from oslo_versionedobjects import fields
from heat.db import api as db_api
from heat.engine import api as engine_api
from heat.objects import base as heat_base
from heat.objects import fields as heat_fields
from heat.objects import resource_snapshot as rsrc_snapshot_objects
[docs]
class Snapshot(
heat_base.HeatObject,
base.VersionedObjectDictCompat,
base.ComparableVersionedObject,
):
fields = {
'id': fields.StringField(),
'name': fields.StringField(nullable=True),
'stack_id': fields.StringField(),
'data': heat_fields.JsonField(nullable=True),
'tenant': fields.StringField(),
'status': fields.StringField(nullable=True),
'status_reason': fields.StringField(nullable=True),
'created_at': fields.DateTimeField(read_only=True),
'updated_at': fields.DateTimeField(nullable=True),
}
@staticmethod
def _from_db_object(context, snapshot, db_snapshot):
for field in snapshot.fields:
snapshot[field] = db_snapshot[field]
snapshot._context = context
snapshot.obj_reset_changes()
return snapshot
[docs]
@classmethod
def create(cls, context, values):
return cls._from_db_object(
context, cls(), db_api.snapshot_create(context, values))
[docs]
@classmethod
def get_snapshot_by_stack(cls, context, snapshot_id, stack,
load_rsrc_snapshot=False):
snapshot = cls._from_db_object(
context, cls(), db_api.snapshot_get_by_stack(
context, snapshot_id, stack))
if load_rsrc_snapshot:
resource_snapshots = cls.load_rsrc_snapshots(context, snapshot.id)
if resource_snapshots:
snapshot.data['resources'] = resource_snapshots
return snapshot
[docs]
@classmethod
def get_snapshot(cls, context, snapshot_id, load_rsrc_snapshot=False):
snapshot = cls._from_db_object(
context, cls(), db_api.snapshot_get(context, snapshot_id))
if load_rsrc_snapshot:
resource_snapshots = cls.load_rsrc_snapshots(context, snapshot.id)
if resource_snapshots:
snapshot.data['resources'] = resource_snapshots
return snapshot
[docs]
@classmethod
def update(cls, context, snapshot_id, values):
db_snapshot = db_api.snapshot_update(context, snapshot_id, values)
return cls._from_db_object(context, cls(), db_snapshot)
[docs]
@classmethod
def delete(cls, context, snapshot_id):
db_api.snapshot_delete(context, snapshot_id)
[docs]
@classmethod
def get_all_by_stack(cls, context, stack_id):
return [cls._from_db_object(context, cls(), db_snapshot)
for db_snapshot
in db_api.snapshot_get_all_by_stack(context, stack_id)]
[docs]
@classmethod
def count_all_by_stack(cls, context, stack_id):
return db_api.snapshot_count_all_by_stack(context, stack_id)
[docs]
@classmethod
def get_all(cls, context, stack_id, load_rsrc_snapshot=False):
snapshots = []
for db_snapshot in db_api.snapshot_get_all_by_stack(context, stack_id):
snapshot = cls._from_db_object(context, cls(), db_snapshot)
if load_rsrc_snapshot:
resource_snapshots = cls.load_rsrc_snapshots(
context, snapshot.id)
if resource_snapshots:
snapshot.data['resources'] = resource_snapshots
snapshots.append(snapshot)
return snapshots
[docs]
@classmethod
def load_rsrc_snapshots(cls, context, snapshot_id, show_meta=False):
r_snapshots = rsrc_snapshot_objects.ResourceSnapshot.get_all(
context, snapshot_id)
def _format_rsrc_snapshot(rsrc_snapshot_obj):
r_s = engine_api.format_resource_snapshot(rsrc_snapshot_obj)
if show_meta:
return r_s
return r_s['data']
if r_snapshots is not None:
return dict((r_s.resource_name, _format_rsrc_snapshot(
r_s)) for r_s in r_snapshots)
