| |
| # 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 synchronizers.new_base.modelaccessor import FabricCrossconnectServiceInstance, ServiceInstance, model_accessor |
| from synchronizers.new_base.policy import Policy |
| from synchronizers.new_base.exceptions import * |
| |
| from xosconfig import Config |
| from multistructlog import create_logger |
| |
| log = create_logger(Config().get('logging')) |
| |
| class FabricCrossconnectServiceInstancePolicy(Policy): |
| model_name = "FabricCrossconnectServiceInstance" |
| |
| def handle_create(self, service_instance): |
| return self.handle_update(service_instance) |
| |
| def handle_update(self, service_instance): |
| log.info("Handle_update Fabric Crossconnect Service Instance", service_instance=service_instance) |
| |
| if (service_instance.link_deleted_count > 0) and (not service_instance.provided_links.exists()): |
| # If this instance has no links pointing to it, delete |
| self.handle_delete(service_instance) |
| if FabricCrossconnectServiceInstance.objects.filter(id=service_instance.id).exists(): |
| service_instance.delete() |
| return |
| |
| # If there is a westbound link, then make sure the SerivceInstance is consistent with the |
| # westbound fields. |
| |
| if service_instance.provided_links.exists(): |
| updated_fields = [] |
| |
| si = ServiceInstance.objects.get(id=service_instance.id) |
| s_tag = si.get_westbound_service_instance_properties("s_tag") |
| switch_datapath_id = si.get_westbound_service_instance_properties("switch_datapath_id") |
| source_port = si.get_westbound_service_instance_properties("switch_port") |
| |
| if (s_tag is None): |
| raise Exception("Westbound ServiceInstance s-tag is None on fcsi %s" % service_instance.id) |
| |
| if (not switch_datapath_id): |
| raise Exception("Westbound ServiceInstance switch_datapath_id is unset on fcsi %s" % service_instance.id) |
| |
| if (source_port is None): |
| raise Exception("Westbound ServiceInstance switch_port is None on fcsi %s" % service_instance.id) |
| |
| s_tag = int(s_tag) |
| source_port = int(source_port) |
| |
| if (s_tag != service_instance.s_tag): |
| if service_instance.s_tag is not None: |
| raise Exception("Westbound ServiceInstance changing s-tag is not currently permitted") |
| service_instance.s_tag = s_tag |
| updated_fields.append("s_tag") |
| if (switch_datapath_id != service_instance.switch_datapath_id): |
| if service_instance.switch_datapath_id: |
| raise Exception("Westbound ServiceInstance changing switch_datapath_id is not currently permitted") |
| service_instance.switch_datapath_id = switch_datapath_id |
| updated_fields.append("switch_datapath_id") |
| if (source_port != service_instance.source_port): |
| if service_instance.source_port is not None: |
| raise Exception("Westbound ServiceInstance changing source_port is not currently permitted") |
| service_instance.source_port = source_port |
| updated_fields.append("source_port") |
| |
| if updated_fields: |
| service_instance.save(update_fields = updated_fields) |
| |
| def handle_delete(self, service_instance): |
| log.info("Handle_delete Fabric-Crossconnect Service Instance", service_instance=service_instance) |
| |
| |