2 # ============LICENSE_START===============================================
3 # Copyright (C) 2021 Nordix Foundation. All rights reserved.
4 # ========================================================================
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
16 # ============LICENSE_END=================================================
25 SDNR_PATH = "/rests/data/network-topology:network-topology/topology=topology-netconf/node=O-RAN-DU-01/yang-ext:mount/o-ran-sc-du-hello-world:network-function/du-to-ru-connection="
28 "o-ran-sc-du-hello-world:du-to-ru-connection": [
31 "administrative-state":"UNLOCKED"
37 def is_message_new_link_failure(message):
38 msg_as_json = json.loads(message)
39 event_headers = msg_as_json["event"]["commonEventHeader"]
42 if (event_headers["domain"] == "fault"):
43 fault_fields = msg_as_json["event"]["faultFields"]
44 link_failure = fault_fields["specificProblem"] == "CUS Link Failure" and fault_fields["eventSeverity"] == "CRITICAL"
49 def is_message_clear_link_failure(message):
50 msg_as_json = json.loads(message)
51 event_headers = msg_as_json["event"]["commonEventHeader"]
53 link_failure_clear = False
54 if (event_headers["domain"] == "fault"):
55 fault_fields = msg_as_json["event"]["faultFields"]
56 link_failure_clear = fault_fields["specificProblem"] == "CUS Link Failure" and fault_fields["eventSeverity"] == "NORMAL"
58 return link_failure_clear
61 def handle_link_failure(message, o_ru_to_o_du_map, sdnr_address):
62 verboseprint("Got a link failure: ")
63 alarm_msg_as_json = json.loads(message)
64 event_headers = alarm_msg_as_json["event"]["commonEventHeader"]
65 o_ru_id = event_headers["reportingEntityId"]
66 verboseprint("O-RU ID: " + o_ru_id)
67 o_du_id = o_ru_to_o_du_map[o_ru_id]
68 verboseprint("O-DU ID: " + o_du_id)
69 unlock_msg = json.loads(json.dumps(UNLOCK_MESSAGE))
70 unlock_msg["o-ran-sc-du-hello-world:du-to-ru-connection"][0]["name"] = o_du_id
71 response = requests.post(sdnr_address + SDNR_PATH + o_du_id, json=unlock_msg)
75 def handle_clear_link_failure(message):
76 msg_as_json = json.loads(message)
77 event_headers = msg_as_json["event"]["commonEventHeader"]
78 o_ru_id = event_headers["reportingEntityId"]
79 verboseprint("Cleared Link Failure for O-RU ID: " + o_ru_id)
82 def read_o_ru_to_o_du_map_from_file(map_file):
83 file = open(map_file, "r")
84 contents = file.read()
85 dictionary = ast.literal_eval(contents)
90 if __name__ == '__main__':
91 parser = argparse.ArgumentParser(prog='PROG')
92 parser.add_argument('--mrHost', help='The URL of the MR host', default="http://message-router.onap")
93 parser.add_argument('--mrPort', help='The port of the MR host', type=int, default=3904)
94 parser.add_argument('--mrTopic', help='The topic to poll messages from', default="ALARMS-WRITE")
95 parser.add_argument('--sdnrHost', help='The URL of the SNDR host', default="http://localhost")
96 parser.add_argument('--sdnrPort', help='The port of the SDNR host', type=int, default=9990)
97 parser.add_argument('--oRuTooDuMapFile', help='A file with the mapping between O-RU ID and O-DU ID as a dictionary', default="o-ru-to-o-du-map.txt")
98 parser.add_argument('--pollTime', help='The time between polls', type=int, default=10)
99 parser.add_argument('-v', '--verbose', action='store_true', help='Turn on verbose printing')
100 parser.add_argument('--version', action='version', version='%(prog)s 1.0')
101 args = vars(parser.parse_args())
102 mr_host = args["mrHost"]
103 mr_port = args["mrPort"]
104 mr_topic = args["mrTopic"]
105 sdnr_host = args["sdnrHost"]
106 sdnr_port = args["sdnrPort"]
107 o_ru_to_o_du_map = read_o_ru_to_o_du_map_from_file(args["oRuTooDuMapFile"])
108 pollTime = args["pollTime"]
112 def verboseprint(*args, **kwargs):
113 print(*args, **kwargs)
116 verboseprint = lambda *a, **k: None # do-nothing function
118 verboseprint("Using MR address: " + mr_host + ":" + str(mr_port) + " and topic: " + mr_topic)
119 verboseprint("Using SDNR address: " + sdnr_host + ":" + str(sdnr_port))
120 verboseprint("Starting with " + str(pollTime) + " seconds between polls")
121 mr_address = mr_host + ":" + str(mr_port) + "/events/" + mr_topic + "/users/test/"
122 sdnr_address = sdnr_host + ":" + str(sdnr_port)
125 response = requests.get(mr_address)
126 verboseprint("Polling")
127 messages = response.json()
128 for message in messages:
129 if (is_message_new_link_failure(message)):
130 handle_link_failure(message, o_ru_to_o_du_map, sdnr_address)
131 elif (is_message_clear_link_failure(message)):
132 handle_clear_link_failure(message)