lcm/lcm/pub/utils/notificationsutil.py

   1 # Copyright (C) 2018 Verizon. All Rights Reserved
   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 json
  16 import logging
  17 import requests
  18
  19 from rest_framework import status
  20 from requests.auth import HTTPBasicAuth
  21
  22 from lcm.nf import const
  23 from lcm.pub.database.models import SubscriptionModel
  24
  25 logger = logging.getLogger(__name__)
  26
  27
  28 class NotificationsUtil(object):
  29     def __init__(self):
  30         pass
  31
  32     def send_notification(self, notification):
  33         logger.info("Send Notifications to the callbackUri")
  34         filters = {
  35             "vnfInstanceId": "vnf_instance_filter",
  36             "operationState": "operation_states",
  37             "operation": "operation_types"
  38         }
  39         subscriptions_filter = {v + "__contains": notification[k] for k, v in filters.iteritems()}
  40
  41         subscriptions = SubscriptionModel.objects.filter(**subscriptions_filter)
  42         if not subscriptions.exists():
  43             logger.info("No subscriptions created for the filters %s" % notification)
  44             return
  45         logger.info("Start sending notifications")
  46         for subscription in subscriptions:
  47             # set subscription id
  48             notification["subscriptionId"] = subscription.subscription_id
  49             notification['_links']['subscription'] = {'href': '/api/vnflcm/v1/subscriptions/%s' % subscription.subscription_id}
  50             callbackUri = subscription.callback_uri
  51             auth_info = json.loads(subscription.auth_info)
  52             if auth_info["authType"] == const.OAUTH2_CLIENT_CREDENTIALS:
  53                 pass
  54             self.post_notification(callbackUri, auth_info, notification)
  55
  56     def post_notification(self, callbackUri, auth_info, notification):
  57         params = auth_info.get("paramsBasic", {})
  58         username = params.get("userName")
  59         password = params.get("password")
  60         logger.info("Sending notification to %s", callbackUri)
  61         resp = requests.post(callbackUri, data=notification, auth=HTTPBasicAuth(username, password))
  62         if resp.status_code != status.HTTP_204_NO_CONTENT:
  63             raise Exception("Unable to send the notification to %s, due to %s" % (callbackUri, resp.text))
  64         return