| |
| # 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 * |
| from synchronizers.new_base.model_policies.model_policy_tenantwithcontainer import TenantWithContainerPolicy |
| |
| class InternetEmulatorServiceInstancePolicy(TenantWithContainerPolicy): |
| model_name = "InternetEmulatorServiceInstance" |
| constrain_by_service_instance = True |
| |
| def handle_create(self, service_instance): |
| return self.handle_update(service_instance) |
| |
| def handle_update(self, service_instance): |
| if (service_instance.link_deleted_count>0) and (not service_instance.provided_links.exists()): |
| self.logger.info("The last provided link has been deleted -- self-destructing.") |
| self.handle_delete(service_instance) |
| if InternetEmulatorServiceInstance.objects.filter(id=service_instance.id).exists(): |
| service_instance.delete() |
| else: |
| self.logger.info("Tenant %s is already deleted" % service_instance) |
| return |
| |
| self.manage_container(service_instance) |
| |
| def handle_delete(self, service_instance): |
| if service_instance.instance and (not service_instance.instance.deleted): |
| all_service_instances_this_instance = InternetEmulatorServiceInstance.objects.filter(instance_id=service_instance.instance.id) |
| other_service_instances_this_instance = [x for x in all_service_instances_this_instance if x.id != service_instance.id] |
| if (not other_service_instances_this_instance): |
| self.logger.info("InternetEmulatorServiceInstance Instance %s is now unused -- deleting" % service_instance.instance) |
| service_instance.instance.delete() |
| else: |
| self.logger.info("InternetEmulatorServiceInstance Instance %s has %d other service instances attached" % (service_instance.instance, len(other_service_instances_this_instance))) |