1 # Copyright (C) 2018 Verizon. All Rights Reserved
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
7 # http://www.apache.org/licenses/LICENSE-2.0
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.
21 from collections import Counter
23 from rest_framework import status
25 from lcm.nf import const
26 from lcm.pub.database.models import SubscriptionModel
27 from lcm.pub.exceptions import NFLCMException
28 from lcm.pub.exceptions import NFLCMExceptionSeeOther
29 from lcm.pub.utils.values import ignore_case_get
30 from lcm.pub.config.config import MSB_SERVICE_IP, MSB_SERVICE_PORT
32 logger = logging.getLogger(__name__)
35 def is_filter_type_equal(new_filter, existing_filter):
36 return Counter(new_filter) == Counter(existing_filter)
39 class CreateSubscription:
40 def __init__(self, data):
42 self.filter = ignore_case_get(self.data, "filter", {})
43 self.callback_uri = ignore_case_get(self.data, "callbackUri")
44 self.authentication = ignore_case_get(self.data, "authentication", {})
45 self.notification_types = ignore_case_get(self.filter, "notificationTypes", [])
46 self.operation_types = ignore_case_get(self.filter, "operationTypes", [])
47 self.operation_states = ignore_case_get(self.filter, "operationStates", [])
49 ignore_case_get(self.filter, "vnfInstanceSubscriptionFilter", {})
51 def check_callbackuri_connection(self):
52 logger.debug("SubscribeNotification-post::> Sending GET request "
53 "to %s" % self.callback_uri)
55 response = requests.get(self.callback_uri, timeout=2)
56 if response.status_code != status.HTTP_204_NO_CONTENT:
57 raise NFLCMException("callbackUri %s returns %s status "
58 "code." % (self.callback_uri, response.status_code))
60 raise NFLCMException("callbackUri %s didn't return 204 status"
61 "code." % self.callback_uri)
64 self.subscription_id = str(uuid.uuid4())
65 # self.check_callbackuri_connection()
66 self.check_valid_auth_info()
67 self.check_filter_types()
70 subscription = SubscriptionModel.objects.get(subscription_id=self.subscription_id)
73 def check_filter_types(self):
74 logger.debug("SubscribeNotification--post::> Validating "
75 "operationTypes and operationStates if exists")
76 if self.operation_types and \
77 const.LCCNNOTIFICATION not in self.notification_types:
78 raise NFLCMException("If you are setting operationTypes,"
79 "then notificationTypes "
80 "must be " + const.LCCNNOTIFICATION)
81 if self.operation_states and \
82 const.LCCNNOTIFICATION not in self.notification_types:
83 raise NFLCMException("If you are setting operationStates,"
84 "then notificationTypes "
85 "must be " + const.LCCNNOTIFICATION)
87 def check_valid_auth_info(self):
88 logger.debug("SubscribeNotification--post::> Validating Auth "
89 "details if provided")
90 if self.authentication.get("paramsBasic", {}) and \
91 const.BASIC not in self.authentication.get("authType"):
92 raise NFLCMException('Auth type should be ' + const.BASIC)
93 if self.authentication.get("paramsOauth2ClientCredentials", {}) and \
94 const.OAUTH2_CLIENT_CREDENTIALS not in self.authentication.get("authType"):
95 raise NFLCMException('Auth type should be ' + const.OAUTH2_CLIENT_CREDENTIALS)
97 def check_filter_exists(self, sub):
98 # Check the notificationTypes, operationTypes, operationStates
99 for filter_type in ["operation_types",
100 "notification_types", "operation_states"]:
101 if not is_filter_type_equal(getattr(self, filter_type),
102 ast.literal_eval(getattr(sub, filter_type))):
104 # If all the above types are same then check vnf instance filters
105 nf_filter = json.loads(sub.vnf_instance_filter)
106 for vnf_filter_type in ["vnfdIds", "vnfInstanceIds",
108 if not is_filter_type_equal(self.vnf_filter.get(vnf_filter_type, []),
109 nf_filter.get(vnf_filter_type, [])):
113 def check_valid(self):
114 logger.debug("SubscribeNotification--post::> Checking DB if "
115 "callbackUri already exists")
116 subscriptions = SubscriptionModel.objects.filter(callback_uri=self.callback_uri)
117 if not subscriptions.exists():
119 for subscription in subscriptions:
120 if self.check_filter_exists(subscription):
121 links = json.loads(subscription.links)
122 raise NFLCMExceptionSeeOther("http://%s:%s/%s" % (MSB_SERVICE_IP, MSB_SERVICE_PORT, links["self"]["href"]))
126 logger.debug("SubscribeNotification--post::> Saving the subscription "
127 "%s to the database" % self.subscription_id)
130 "href": const.ROOT_URI + self.subscription_id
133 SubscriptionModel.objects.create(subscription_id=self.subscription_id,
134 callback_uri=self.callback_uri,
135 auth_info=self.authentication,
136 notification_types=json.dumps(self.notification_types),
137 operation_types=json.dumps(self.operation_types),
138 operation_states=json.dumps(self.operation_states),
139 vnf_instance_filter=json.dumps(self.vnf_filter),
140 links=json.dumps(links))
141 logger.debug('Create Subscription[%s] success', self.subscription_id)