+ 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()
+ consumer = AIOKafkaConsumer(
+ "alarm_response",
+ loop=self.loop,
+ bootstrap_servers=self.kafka_server,
+ group_id="pol-consumer-" + str(uuid.uuid4()),
+ enable_auto_commit=False,
+ key_deserializer=bytes.decode,
+ value_deserializer=bytes.decode,
+ consumer_timeout_ms=10000)
+ await consumer.start()
+ try:
+ await producer.send_and_wait("alarm_request", key="delete_alarm_request", value=json.dumps(msg))
+ finally:
+ await producer.stop()
+ try:
+ async for message in consumer:
+ if message.key == 'delete_alarm_response':
+ content = json.loads(message.value)
+ log.info("Received delete_alarm_response %s", content)
+ if content['alarm_delete_response']['correlation_id'] == cor_id:
+ if not content['alarm_delete_response']['status']:
+ raise ValueError("Error deleting alarm in MON")
+ alarm_uuid = content['alarm_delete_response']['alarm_uuid']
+ await consumer.stop()
+ return alarm_uuid
+ finally:
+ await consumer.stop()
+ raise ValueError('Timeout: No alarm deletion response from MON. Is MON up?')
+
+ def _build_create_alarm_payload(self, cor_id: int, metric_name: str, ns_id: str, vdu_name: str,
+ vnf_member_index: int,
+ threshold: int, statistic: str, operation: str):