+ async def delete_alarm(self, ns_id: str, vnf_member_index: int, vdu_name: str, alarm_uuid: str):
+ cor_id = random.randint(1, 10e7)
+ msg = self._build_delete_alarm_payload(cor_id, ns_id, vdu_name, vnf_member_index, alarm_uuid)
+ log.info("Sending delete_alarm_request %s", msg)
+ producer = AIOKafkaProducer(loop=self.loop,
+ bootstrap_servers=self.kafka_server,
+ key_serializer=str.encode,
+ value_serializer=str.encode)
+ await producer.start()
+ try:
+ await producer.send_and_wait("alarm_request", key="delete_alarm_request", value=json.dumps(msg))
+ finally:
+ await producer.stop()
+ log.info("Waiting for delete_alarm_response...")
+ consumer = AIOKafkaConsumer(
+ "alarm_response_" + str(cor_id),
+ loop=self.loop,
+ bootstrap_servers=self.kafka_server,
+ key_deserializer=bytes.decode,
+ value_deserializer=bytes.decode,
+ auto_offset_reset='earliest')
+ await consumer.start()
+ alarm_uuid = None
+ try:
+ async for message in consumer:
+ try:
+ content = json.loads(message.value)
+ except JSONDecodeError:
+ content = yaml.safe_load(message.value)
+ if content['alarm_delete_response']['correlation_id'] == cor_id:
+ log.info("Received delete_alarm_response %s", content)
+ if not content['alarm_delete_response']['status']:
+ raise ValueError("Error deleting alarm in MON. Response status is False.")
+ alarm_uuid = content['alarm_delete_response']['alarm_uuid']
+ break
+ finally:
+ await consumer.stop()
+ if not alarm_uuid:
+ raise ValueError('No alarm deletion response from MON. Is MON up?')
+ return alarm_uuid