lcm/lcm/nf/views/subscriptions_view.py

   1 # Copyright (C) 2018 Verizon. All Rights Reserved\r
   2 #\r
   3 # Licensed under the Apache License, Version 2.0 (the "License");\r
   4 # you may not use this file except in compliance with the License.\r
   5 # You may obtain a copy of the License at\r
   6 #\r
   7 #         http://www.apache.org/licenses/LICENSE-2.0\r
   8 #\r
   9 # Unless required by applicable law or agreed to in writing, software\r
  10 # distributed under the License is distributed on an "AS IS" BASIS,\r
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
  12 # See the License for the specific language governing permissions and\r
  13 # limitations under the License.\r
  14 \r
  15 import ast\r
  16 import json\r
  17 import logging\r
  18 \r
  19 from drf_yasg.utils import swagger_auto_schema\r
  20 from lcm.nf.biz.create_subscription import CreateSubscription\r
  21 from lcm.nf.biz.query_subscription import QuerySubscription\r
  22 from rest_framework import status\r
  23 from rest_framework.response import Response\r
  24 from rest_framework.views import APIView\r
  25 \r
  26 from lcm.nf.serializers.lccn_subscription_request import LccnSubscriptionRequestSerializer\r
  27 from lcm.nf.serializers.lccn_subscription import LccnSubscriptionSerializer\r
  28 from lcm.nf.serializers.lccn_subscriptions import LccnSubscriptionsSerializer\r
  29 from lcm.nf.serializers.response import ProblemDetailsSerializer\r
  30 from lcm.pub.exceptions import NFLCMException, NFLCMExceptionBadRequest\r
  31 from .common import view_safe_call_with_log\r
  32 \r
  33 logger = logging.getLogger(__name__)\r
  34 VALID_FILTERS = ["operationTypes", "operationStates", "notificationTypes", "vnfInstanceId"]\r
  35 \r
  36 \r
  37 def get_problem_details_serializer(status_code, error_message):\r
  38     problem_details = {\r
  39         "status": status_code,\r
  40         "detail": error_message\r
  41     }\r
  42     problem_details_serializer = ProblemDetailsSerializer(data=problem_details)\r
  43     problem_details_serializer.is_valid()\r
  44     return problem_details_serializer\r
  45 \r
  46 \r
  47 class SubscriptionsView(APIView):\r
  48     @swagger_auto_schema(\r
  49         request_body=LccnSubscriptionRequestSerializer(),\r
  50         responses={\r
  51             status.HTTP_201_CREATED: LccnSubscriptionSerializer(),\r
  52             status.HTTP_303_SEE_OTHER: ProblemDetailsSerializer(),\r
  53             status.HTTP_400_BAD_REQUEST: ProblemDetailsSerializer(),\r
  54             status.HTTP_500_INTERNAL_SERVER_ERROR: ProblemDetailsSerializer()\r
  55         }\r
  56     )\r
  57     @view_safe_call_with_log(logger=logger)\r
  58     def post(self, request):\r
  59         logger.debug("SubscribeNotification--post::> %s" % request.data)\r
  60 \r
  61         lccn_subscription_request_serializer = LccnSubscriptionRequestSerializer(data=request.data)\r
  62         if not lccn_subscription_request_serializer.is_valid():\r
  63             raise NFLCMExceptionBadRequest(lccn_subscription_request_serializer.errors)\r
  64         subscription = CreateSubscription(\r
  65             lccn_subscription_request_serializer.data).do_biz()\r
  66         lccn_notifications_filter = {\r
  67             "notificationTypes": ast.literal_eval(subscription.notification_types),\r
  68             "operationTypes": ast.literal_eval(subscription.operation_types),\r
  69             "operationStates": ast.literal_eval(subscription.operation_states),\r
  70             "vnfInstanceSubscriptionFilter": json.loads(subscription.vnf_instance_filter)\r
  71         }\r
  72         subscription_data = {\r
  73             "id": subscription.subscription_id,\r
  74             "callbackUri": subscription.callback_uri,\r
  75             "_links": json.loads(subscription.links),\r
  76             "filter": lccn_notifications_filter\r
  77         }\r
  78         sub_resp_serializer = LccnSubscriptionSerializer(data=subscription_data)\r
  79         if not sub_resp_serializer.is_valid():\r
  80             raise NFLCMException(sub_resp_serializer.errors)\r
  81         return Response(data=sub_resp_serializer.data, status=status.HTTP_201_CREATED)\r
  82 \r
  83     @swagger_auto_schema(\r
  84         responses={\r
  85             status.HTTP_200_OK: LccnSubscriptionsSerializer(),\r
  86             status.HTTP_400_BAD_REQUEST: ProblemDetailsSerializer(),\r
  87             status.HTTP_500_INTERNAL_SERVER_ERROR: ProblemDetailsSerializer()\r
  88         }\r
  89     )\r
  90     @view_safe_call_with_log(logger=logger)\r
  91     def get(self, request):\r
  92         logger.debug("SubscribeNotification--get::> %s" % request.query_params)\r
  93 \r
  94         if request.query_params and not set(request.query_params).issubset(set(VALID_FILTERS)):\r
  95             problem_details_serializer = get_problem_details_serializer(\r
  96                 status.HTTP_400_BAD_REQUEST,\r
  97                 "Not a valid filter"\r
  98             )\r
  99             return Response(data=problem_details_serializer.data,\r
 100                             status=status.HTTP_400_BAD_REQUEST)\r
 101         resp_data = QuerySubscription(request.query_params).query_multi_subscriptions()\r
 102 \r
 103         subscriptions_serializer = LccnSubscriptionsSerializer(data=resp_data)\r
 104         if not subscriptions_serializer.is_valid():\r
 105             raise NFLCMException(subscriptions_serializer.errors)\r
 106 \r
 107         logger.debug("SubscribeNotification--get::> Remove default fields")\r
 108         return Response(data=subscriptions_serializer.data, status=status.HTTP_200_OK)\r