lcm/ns/views/sol/subscriptions_view.py

   1 # Copyright (c) 2019, CMCC Technologies Co., Ltd.
   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 import ast
  16 import json
  17 import logging
  18
  19 from drf_yasg.utils import swagger_auto_schema
  20 from lcm.ns.serializers.sol.lccn_subscription import LccnSubscriptionSerializer
  21 from lcm.ns.serializers.sol.lccn_subscription import LccnSubscriptionsSerializer
  22 from rest_framework import status
  23 from rest_framework.response import Response
  24 from rest_framework.views import APIView
  25
  26 from lcm.ns.biz.create_subscription import CreateSubscription
  27 from lcm.ns.biz.query_subscription import QuerySubscription
  28 from lcm.ns.serializers.sol.lccn_subscription_request import LccnSubscriptionRequestSerializer
  29 from lcm.ns.serializers.sol.pub_serializers import ProblemDetailsSerializer
  30 from lcm.pub.exceptions import NSLCMException
  31 from lcm.pub.exceptions import BadRequestException
  32 from .common import view_safe_call_with_log
  33
  34 logger = logging.getLogger(__name__)
  35 VALID_FILTERS = [
  36     "operationTypes",
  37     "operationStates",
  38     "notificationTypes",
  39     "nsInstanceId",
  40     "nsComponentTypes",
  41     "lcmOpNameImpactingNsComponent",
  42     "lcmOpOccStatusImpactingNsComponent"
  43 ]
  44
  45
  46 def get_problem_details_serializer(status_code, error_message):
  47     problem_details = {
  48         "status": status_code,
  49         "detail": error_message
  50     }
  51     problem_details_serializer = ProblemDetailsSerializer(data=problem_details)
  52     problem_details_serializer.is_valid()
  53     return problem_details_serializer
  54
  55
  56 class SubscriptionsView(APIView):
  57
  58     @swagger_auto_schema(
  59         request_body=LccnSubscriptionRequestSerializer(),
  60         responses={
  61             status.HTTP_201_CREATED: LccnSubscriptionSerializer(),
  62             status.HTTP_303_SEE_OTHER: ProblemDetailsSerializer(),
  63             status.HTTP_500_INTERNAL_SERVER_ERROR: ProblemDetailsSerializer()
  64         }
  65     )
  66     @view_safe_call_with_log(logger=logger)
  67     def post(self, request):
  68         logger.debug("SubscribeNotification--post::> %s" % request.data)
  69
  70         lccn_subscription_request_serializer = LccnSubscriptionRequestSerializer(
  71             data=request.data)
  72         if not lccn_subscription_request_serializer.is_valid():
  73             raise BadRequestException(
  74                 lccn_subscription_request_serializer.errors)
  75         subscription = CreateSubscription(
  76             lccn_subscription_request_serializer.data).do_biz()
  77         lccn_notifications_filter = {
  78             "notificationTypes": ast.literal_eval(subscription.notification_types),
  79             "operationTypes": ast.literal_eval(subscription.operation_types),
  80             "operationStates": ast.literal_eval(subscription.operation_states),
  81             "nsInstanceSubscriptionFilter": json.loads(subscription.ns_instance_filter),
  82             "nsComponentTypes": ast.literal_eval(subscription.ns_component_types),
  83             "lcmOpNameImpactingNsComponent": ast.literal_eval(subscription.
  84                                                               lcm_opname_impacting_nscomponent),
  85             "lcmOpOccStatusImpactingNsComponent": ast.literal_eval(subscription.
  86                                                                    lcm_opoccstatus_impacting_nscomponent)
  87         }
  88         subscription_data = {
  89             "id": subscription.subscription_id,
  90             "callbackUri": subscription.callback_uri,
  91             "_links": json.loads(subscription.links),
  92             "filter": lccn_notifications_filter
  93         }
  94         sub_resp_serializer = LccnSubscriptionSerializer(
  95             data=subscription_data)
  96         if not sub_resp_serializer.is_valid():
  97             raise NSLCMException(sub_resp_serializer.errors)
  98         return Response(data=sub_resp_serializer.data, status=status.HTTP_201_CREATED)
  99
 100     @swagger_auto_schema(
 101         responses={
 102             status.HTTP_200_OK: LccnSubscriptionsSerializer(),
 103             status.HTTP_400_BAD_REQUEST: ProblemDetailsSerializer(),
 104             status.HTTP_500_INTERNAL_SERVER_ERROR: ProblemDetailsSerializer()
 105         }
 106     )
 107     @view_safe_call_with_log(logger=logger)
 108     def get(self, request):
 109         logger.debug("SubscribeNotification--get::> %s" % request.query_params)
 110
 111         if request.query_params and not set(request.query_params).issubset(set(VALID_FILTERS)):
 112             problem_details_serializer = get_problem_details_serializer(
 113                 status.HTTP_400_BAD_REQUEST, "Not a valid filter")
 114             return Response(data=problem_details_serializer.data, status=status.HTTP_400_BAD_REQUEST)
 115         resp_data = QuerySubscription(request.query_params).query_multi_subscriptions()
 116         subscriptions_serializer = LccnSubscriptionsSerializer(data=resp_data)
 117         if not subscriptions_serializer.is_valid():
 118             raise NSLCMException(subscriptions_serializer.errors)
 119         logger.debug("SubscribeNotification--get::> Remove default fields if exclude_default is "
 120                      "specified")
 121         return Response(data=subscriptions_serializer.data, status=status.HTTP_200_OK)