/*
- * Copyright 2017 ZTE Corporation.
+ * Copyright 2017 - 2021 ZTE Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
public synchronized void addSubscriber(Subscriber subscriber) {
String topic = subscriber.getTopic();
- if (topic != null && !pollingTasks.containsKey(topic)) {
+ if (topic != null) {
+ if (pollingTasks.containsKey(topic)) {
+ removeSubscriber(subscriber);
+ }
AlarmInfoDao alarmInfoDao = daoUtil.getJdbiDaoByOnDemand(AlarmInfoDao.class);
DMaaPAlarmPolling pollingTask = new DMaaPAlarmPolling(subscriber, droolsEngine, alarmInfoDao);
Thread thread = new Thread(pollingTask);
thread.start();
pollingTasks.put(topic, pollingTask);
- log.info("Subscribe to topic: " + subscriber.getUrl());
+ log.info("Subscribed to topic: " + subscriber.getUrl());
+ } else {
+ log.info("The topic is null. Operation aborted.");
}
}