41 lines
1.5 KiB
Python
41 lines
1.5 KiB
Python
# Copyright 2016 Mirantis, Inc.
|
|
#
|
|
# 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 nailgun import utils
|
|
from nailgun.utils.uniondict import UnionDict
|
|
|
|
|
|
class TransactionContext(object):
|
|
def __init__(self, new_state, old_state=None, **kwargs):
|
|
"""Wrapper around current and previous state of a transaction
|
|
|
|
:param new_state: new state of cluster
|
|
{node_id: <deployment info>, ...}
|
|
:param old_state: old state of cluster per task name or None
|
|
{task_id: {node_id: <deployment info>, ...}, ...}
|
|
"""
|
|
self.new = new_state
|
|
self.old = old_state or {}
|
|
self.options = kwargs
|
|
|
|
def get_new_data(self, node_id):
|
|
return UnionDict(self.new['common'],
|
|
self.new['nodes'][node_id])
|
|
|
|
def get_old_data(self, node_id, task_id):
|
|
node_info = utils.get_in(self.old, task_id, 'nodes', node_id)
|
|
if not node_info:
|
|
return {}
|
|
return UnionDict(self.old[task_id]['common'], node_info)
|