tutorials/ApacheCNF/automation/delete.py

   1 # ============LICENSE_START=======================================================
   2 # Copyright (C) 2021 Orange
   3 # ================================================================================
   4 # Licensed under the Apache License, Version 2.0 (the "License");
   5 # you may not use this file except in compliance with the License.
   6 # You may obtain a copy of the License at
   7 #
   8 #      http://www.apache.org/licenses/LICENSE-2.0
   9 #
  10 # Unless required by applicable law or agreed to in writing, software
  11 # distributed under the License is distributed on an "AS IS" BASIS,
  12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 # See the License for the specific language governing permissions and
  14 # limitations under the License.
  15 #
  16 # ============LICENSE_END=========================================================
  17
  18 import logging
  19
  20 from config import Config, VariablesDict
  21 from instantiate import get_customer, check_orchestration_status
  22
  23 from onapsdk.exceptions import ResourceNotFound, APIError
  24 from onapsdk.aai.business import ServiceInstance
  25
  26 logger = logging.getLogger()
  27 logger.setLevel(logging.DEBUG)
  28
  29
  30 def get_service_subscription(customer, service_type):
  31     try:
  32         service_subscription = customer.get_service_subscription_by_service_type(
  33             service_type=service_type)
  34         return service_subscription
  35     except ResourceNotFound:
  36         logger.error("Service Subscription not found")
  37         exit(1)
  38
  39
  40 def get_service_instance(service_subscription, service_instance_name):
  41     try:
  42         service_instance = service_subscription.get_service_instance_by_name(
  43             service_instance_name=service_instance_name)
  44         return service_instance
  45     except ResourceNotFound:
  46         logger.error("Service Instance not found")
  47         exit(1)
  48
  49
  50 def delete_service_macro(service_instance: ServiceInstance, service_instance_info):
  51     vnf_infos_list = []
  52     for index, vnf_info in enumerate(service_instance_info["vnfs"]):
  53         if not vnf_info.get("vnf_name_suffix"):
  54             vnf_info["vnf_name_suffix"] = str(index)
  55         vnf_info["instance_name"] = f"Instance_{vnf_info['model_name']}_{vnf_info['vnf_name_suffix']}"
  56         vnf_infos_list.append(vnf_info)
  57
  58     ordered_vnf_instances = sorted(vnf_infos_list,
  59                                    key=lambda _vnf: _vnf.get("processing_priority", 100),
  60                                    reverse=True)
  61
  62     delete_vnfs_instances(service_instance, ordered_vnf_instances)
  63
  64     return check_orchestration_status(service_instance.delete(a_la_carte=False))
  65
  66
  67 def delete_vnfs_instances(service_instance: ServiceInstance, ordered_vnf_instances):
  68     for vnf in ordered_vnf_instances:
  69         vnf_name = vnf.get("instance_name")
  70         vnf_instance = next((vnf_instance
  71                              for vnf_instance in service_instance.vnf_instances
  72                              if vnf_instance.vnf_name == vnf_name), None)
  73         if not vnf_instance:
  74             continue
  75
  76         try:
  77             vnf_deletion = vnf_instance.delete(a_la_carte=False)
  78         except APIError:
  79             logger.error("Operation not supported, whole service instance will be deleted with random order")
  80             break
  81         check_orchestration_status(vnf_deletion)
  82     return
  83
  84
  85 def delete_service_alacarte(service_instance):
  86     for vnf in service_instance.vnf_instances:
  87         for vf_module in vnf.vf_modules:
  88             vf_module_deletion = vf_module.delete()
  89             check_orchestration_status(vf_module_deletion)
  90         vnf_deletion = vnf.delete()
  91         check_orchestration_status(vnf_deletion)
  92     service_deletion = service_instance.delete(a_la_carte=True)
  93     check_orchestration_status(service_deletion)
  94
  95
  96 def main():
  97     logger.info("*******************************")
  98     logger.info("**** SERVICE DELETION ****")
  99     logger.info("*******************************")
 100
 101     config = Config(env_dict=VariablesDict.env_variable)
 102     logger.info("******** GET Customer *******")
 103     customer = get_customer(config.service_instance["customer_id"])
 104
 105     logger.info("******** Check Service Subscription *******")
 106     service_subscription = get_service_subscription(customer, config.service_instance["model_name"])
 107
 108     logger.info("******** Get Service Instance details *******")
 109     service_instance = get_service_instance(service_subscription, config.service_instance["instance_name"])
 110
 111     logger.info("******** Delete Service %s *******", service_instance.instance_name)
 112     if config.service_model["macro_orchestration"]:
 113         # if config.service_instance.get("deletion_policy") in ('InstantiationOrder', 'ReverseInstantiationOrder'):
 114         #     delete_service_macro_delete_policy(service_instance, config.service_instance)
 115         # else:
 116         delete_service_macro(service_instance, config.service_instance)
 117     else:
 118         logger.error("A_la_carte orchestration method not updated")
 119         if config.service_model["pnfs"] is not None:
 120             raise NotImplementedError
 121         else:
 122             delete_service_alacarte(service_instance)
 123
 124
 125 if __name__ == "__main__":
 126     sh = logging.StreamHandler()
 127     sh_formatter = logging.Formatter('%(asctime)s %(levelname)s %(lineno)d:%(filename)s(%(process)d) - %(message)s')
 128     sh.setFormatter(sh_formatter)
 129     logger.addHandler(sh)
 130
 131     main()