
# Copyright 2017-present Open Networking Foundation
#
# 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 xossynchronizer.modelaccessor import *
from xossynchronizer.model_policies.policy import Policy

class ControllerSlicePolicy(Policy):
    model_name = "ControllerSlice"

    def handle_create(self, controller_slice):
        return self.handle_update(controller_slice)

    def handle_update(self, controller_slice):
        my_status_code = int(controller_slice.backend_code)
        try:
            his_status_code = int(controller_slice.slice.backend_code)
        except:
            his_status_code = 0
 
        fields = []
        if (my_status_code not in [0,his_status_code]):
            controller_slice.slice.backend_status = controller_slice.backend_status
            fields+=['backend_status']

        if (controller_slice.backend_register != controller_slice.slice.backend_register):
            controller_slice.slice.backend_register = controller_slice.backend_register
            fields+=['backend_register']

        controller_slice.slice.save(update_fields = fields)