# ============LICENSE_START=============================================== # Copyright (C) 2021 Nordix Foundation. All rights reserved. # ======================================================================== # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # ============LICENSE_END================================================= # import argparse import ast import json import os import requests import time MR_PATH = "/events/[TOPIC]/users/test/" SDNR_PATH = "/rests/data/network-topology:network-topology/topology=topology-netconf/node=[O-DU-ID]/yang-ext:mount/o-ran-sc-du-hello-world:network-function/du-to-ru-connection=[O-RU-ID]" FAUILT_ID = "28" UNLOCK_MESSAGE = { "o-ran-sc-du-hello-world:du-to-ru-connection": [ { "name":"", "administrative-state":"UNLOCKED" } ] } def is_message_new_link_failure(message): msg_as_json = json.loads(message) event_headers = msg_as_json["event"]["commonEventHeader"] link_failure = False if (event_headers["domain"] == "fault"): fault_fields = msg_as_json["event"]["faultFields"] link_failure = fault_fields["alarmCondition"] == FAUILT_ID and fault_fields["eventSeverity"] != "NORMAL" return link_failure def is_message_clear_link_failure(message): msg_as_json = json.loads(message) event_headers = msg_as_json["event"]["commonEventHeader"] link_failure_clear = False if (event_headers["domain"] == "fault"): fault_fields = msg_as_json["event"]["faultFields"] link_failure_clear = fault_fields["alarmCondition"] == FAUILT_ID and fault_fields["eventSeverity"] == "NORMAL" return link_failure_clear def handle_link_failure(message, o_ru_to_o_du_map, sdnr_address): verboseprint("Got a link failure: ") alarm_msg_as_json = json.loads(message) event_headers = alarm_msg_as_json["event"]["commonEventHeader"] o_ru_id = event_headers["sourceName"] verboseprint("O-RU ID: " + o_ru_id) o_du_id = o_ru_to_o_du_map[o_ru_id] verboseprint("O-DU ID: " + o_du_id) unlock_msg = json.loads(json.dumps(UNLOCK_MESSAGE)) unlock_msg["o-ran-sc-du-hello-world:du-to-ru-connection"][0]["name"] = o_ru_id send_path = SDNR_PATH.replace("[O-DU-ID]", o_du_id).replace("[O-RU-ID]", o_ru_id) requests.post(sdnr_address + send_path, json=unlock_msg) def handle_clear_link_failure(message): msg_as_json = json.loads(message) event_headers = msg_as_json["event"]["commonEventHeader"] o_ru_id = event_headers["sourceName"] verboseprint("Cleared Link Failure for O-RU ID: " + o_ru_id) def read_o_ru_to_o_du_map_from_file(map_file): file = open(map_file, "r") contents = file.read() dictionary = ast.literal_eval(contents) file.close() return dictionary def poll_and_handle_messages(mr_address, sdnr_address): while True: try: verboseprint("Polling") response = requests.get(mr_address) messages = response.json() for message in messages: if (is_message_new_link_failure(message)): handle_link_failure(message, o_ru_to_o_du_map, sdnr_address) elif (is_message_clear_link_failure(message)): handle_clear_link_failure(message) except Exception as inst: print(inst) time.sleep(pollTime) if __name__ == '__main__': parser = argparse.ArgumentParser(prog='PROG') parser.add_argument('--mrHost', help='The URL of the MR host (default: %(default)s)', default="http://message-router.onap") parser.add_argument('--mrPort', help='The port of the MR host (default: %(default)d)', type=int, default=3904) parser.add_argument('--mrTopic', help='The topic to poll messages from (default: %(default)s)', default="unauthenticated.SEC_FAULT_OUTPUT") parser.add_argument('--sdnrHost', help='The URL of the SNDR host (default: %(default)s)', default="http://localhost") parser.add_argument('--sdnrPort', help='The port of the SDNR host (default: %(default)d)', type=int, default=9990) parser.add_argument('--oRuTooDuMapFile', help='A file with the mapping between O-RU ID and O-DU ID as a dictionary (default: %(default)s)', default="o-ru-to-o-du-map.txt") parser.add_argument('--pollTime', help='The time between polls (default: %(default)d)', type=int, default=10) parser.add_argument('-v', '--verbose', action='store_true', help='Turn on verbose printing') parser.add_argument('--version', action='version', version='%(prog)s 1.0') args = vars(parser.parse_args()) mr_host = args["mrHost"] if os.getenv("MR-HOST") is not None: mr_host = os.getenv("MR-HOST") print("Using MR Host from os: " + mr_host) mr_port = args["mrPort"] if os.getenv("MR-PORT") is not None: mr_port = os.getenv("MR-PORT") print("Using MR Port from os: " + mr_port) mr_topic = args["mrTopic"] sdnr_host = args["sdnrHost"] if os.getenv("SDNR-HOST") is not None: sdnr_host = os.getenv("SDNR-HOST") print("Using SNDR Host from os: " + sdnr_host) sdnr_port = args["sdnrPort"] if os.getenv("SDNR-PORT") is not None: sdnr_port = os.getenv("SDNR-PORT") print("Using SNDR Host from os: " + sdnr_port) o_ru_to_o_du_map = read_o_ru_to_o_du_map_from_file(args["oRuTooDuMapFile"]) pollTime = args["pollTime"] if os.getenv("VERBOSE") is not None or args["verbose"]: def verboseprint(*args, **kwargs): print(*args, **kwargs) else: verboseprint = lambda *a, **k: None # do-nothing function verboseprint("Using MR address: " + mr_host + ":" + str(mr_port) + " and topic: " + mr_topic) verboseprint("Using SDNR address: " + sdnr_host + ":" + str(sdnr_port)) verboseprint("Starting with " + str(pollTime) + " seconds between polls") mr_address = mr_host + ":" + str(mr_port) + MR_PATH.replace("[TOPIC]", mr_topic) sdnr_address = sdnr_host + ":" + str(sdnr_port) poll_and_handle_messages(mr_address, sdnr_address)