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# ============LICENSE_START==========================================
# ===================================================================
# Copyright (c) 2018 AT&T
#
# 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.
#============LICENSE_END============================================

from cloudify.decorators import workflow
from cloudify.workflows import ctx
from cloudify.exceptions import NonRecoverableError
import urllib2
import json

@workflow
def upgrade(node_instance_id,config_json,config_json_url,chartVersion,chartRepo,**kwargs):
    node_instance = ctx.get_node_instance(node_instance_id)

    if not node_instance_id:
        raise NonRecoverableError(
            'No such node_instance_id in deployment: {0}.'.format(
                node_instance_id))

    kwargs = {}
    if config_json == '' and config_json_url == '':
    	kwargs['config'] = config_json
    elif config_json == '' and config_json_url != '':
        response = urllib2.urlopen(config_json_url)
        kwargs['config'] = json.load(response)
    elif config_json != '' and config_json_url == '':
    	kwargs['config'] = config_json
    else:
        raise NonRecoverableError("Unable to get Json config input")

    kwargs['chart_version'] = str(chartVersion)
    kwargs['chart_repo'] = str(chartRepo)
    operation_args = {'operation': 'upgrade',}
    operation_args['kwargs'] = kwargs
    node_instance.execute_operation(**operation_args)


@workflow
def rollback(node_instance_id,revision,**kwargs):
    node_instance = ctx.get_node_instance(node_instance_id)

    if not node_instance_id:
        raise NonRecoverableError(
            'No such node_instance_id in deployment: {0}.'.format(
                node_instance_id))

    kwargs = {}
    kwargs['revision'] = str(revision)
    operation_args = {'operation': 'rollback',}
    operation_args['kwargs'] = kwargs
    node_instance.execute_operation(**operation_args)