| Matteo Scandolo | 23ccdfb | 2017-10-05 17:52:13 -0700 | [diff] [blame] | 1 | # Copyright 2017-present Open Networking Foundation |
| 2 | # |
| 3 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | # you may not use this file except in compliance with the License. |
| 5 | # You may obtain a copy of the License at |
| 6 | # |
| 7 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | # |
| 9 | # Unless required by applicable law or agreed to in writing, software |
| 10 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | # See the License for the specific language governing permissions and |
| 13 | # limitations under the License |
| 14 | |
| 15 | from synchronizers.new_base.modelaccessor import * |
| 16 | from synchronizers.new_base.policy import Policy |
| 17 | from synchronizers.new_base.model_policies.model_policy_tenantwithcontainer import TenantWithContainerPolicy |
| 18 | from synchronizers.new_base.exceptions import * |
| 19 | |
| 20 | class VENBServiceInstancePolicy(TenantWithContainerPolicy): |
| Sapan Bhatia | 0f092e5 | 2017-12-01 10:18:14 -0500 | [diff] [blame] | 21 | model_name = "VENBServiceInstance" |
| 22 | |
| 23 | def handle_create(self, service_instance): |
| 24 | return self.handle_update(service_instance) |
| 25 | |
| 26 | def handle_update(self, service_instance): |
| 27 | if (service_instance.link_deleted_count>0) and (not service_instance.provided_links.exists()): |
| 28 | self.logger.info("The last provided link has been deleted -- self-destructing.") |
| 29 | self.handle_delete(service_instance) |
| 30 | if VENBServiceInstance.objects.filter(id=service_instance.id).exists(): |
| 31 | service_instance.delete() |
| 32 | else: |
| 33 | self.logger.info("Tenant %s is already deleted" % service_instance) |
| 34 | return |
| 35 | |
| 36 | self.manage_container(service_instance) |
| 37 | |
| 38 | def handle_delete(self, service_instance): |
| 39 | if service_instance.instance and (not service_instance.instance.deleted): |
| 40 | all_service_instances_this_instance = VENBServiceInstance.objects.filter(instance_id=service_instance.instance.id) |
| 41 | other_service_instances_this_instance = [x for x in all_service_instances_this_instance if x.id != service_instance.id] |
| 42 | if (not other_service_instances_this_instance): |
| 43 | self.logger.info("VENBServiceInstance Instance %s is now unused -- deleting" % service_instance.instance) |
| 44 | service_instance.instance.delete() |
| 45 | else: |
| 46 | self.logger.info("VENBServiceInstance Instance %s has %d other service instances attached" % (service_instance.instance, len(other_service_instances_this_instance))) |
| 47 | |