lcm/ns/biz/query_subscription.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 lcm.pub.database.models import SubscriptionModel
  20
  21 logger = logging.getLogger(__name__)
  22 ROOT_FILTERS = {
  23     'operationTypes': 'operation_types',
  24     'operationStates': 'operation_states',
  25     'notificationTypes': 'notification_types',
  26     'nsComponentTypes': 'ns_component_types',
  27     'lcmOpNameImpactingNsComponent': 'lcm_opname_impacting_nscomponent',
  28     'lcmOpOccStatusImpactingNsComponent': 'lcm_opoccstatus_impacting_nscomponent'
  29 }
  30 NS_INSTANCE_FILTERS = {
  31     "nsInstanceId": "ns_instance_filter"
  32 }
  33
  34
  35 class QuerySubscription:
  36
  37     def __init__(self, data, subscription_id=''):
  38         self.subscription_id = subscription_id
  39         self.params = data
  40
  41     def query_multi_subscriptions(self):
  42         query_data = {}
  43         logger.debug(
  44             "QueryMultiSubscriptions--get--biz::> Check for filters in query params" % self.params)
  45         for query, value in list(self.params.items()):
  46             if query in ROOT_FILTERS:
  47                 query_data[ROOT_FILTERS[query] + '__icontains'] = value
  48         for query, value in list(self.params.items()):
  49             if query in NS_INSTANCE_FILTERS:
  50                 query_data[NS_INSTANCE_FILTERS[query] + '__icontains'] = value
  51         # Query the database with filters if the request has fields in request
  52         # params, else fetch all records
  53         if query_data:
  54             subscriptions = SubscriptionModel.objects.filter(**query_data)
  55         else:
  56             subscriptions = SubscriptionModel.objects.all()
  57         return [self.fill_resp_data(subscription) for subscription in subscriptions]
  58
  59     def fill_resp_data(self, subscription):
  60         subscription_filter = {
  61             "notificationTypes": ast.literal_eval(subscription.notification_types),
  62             "operationTypes": ast.literal_eval(subscription.operation_types),
  63             "operationStates": ast.literal_eval(subscription.operation_states),
  64             "nsInstanceSubscriptionFilter": json.loads(subscription.ns_instance_filter)
  65         }
  66         resp_data = {
  67             'id': subscription.subscription_id,
  68             'callbackUri': subscription.callback_uri,
  69             'filter': subscription_filter,
  70             '_links': json.loads(subscription.links)
  71         }
  72         return resp_data