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/*
* Copyright 2017 ZTE Corporation.
*
* 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.
*/
package org.onap.holmes.engine.dmaap;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.annotation.PreDestroy;
import javax.inject.Inject;
import org.jvnet.hk2.annotations.Service;
import org.onap.holmes.dsa.dmaappolling.Subscriber;
import org.onap.holmes.engine.manager.DroolsEngine;
@Service
public class SubscriberAction {
@Inject
private DroolsEngine droolsEngine;
private HashMap<String, DMaaPAlarmPolling> pollingTasks = new HashMap<>();
public synchronized void addSubscriber(Subscriber subscriber) {
if (!pollingTasks.containsKey(subscriber.getTopic())) {
DMaaPAlarmPolling pollingTask = new DMaaPAlarmPolling(subscriber, droolsEngine);
Thread thread = new Thread(pollingTask);
thread.start();
pollingTasks.put(subscriber.getTopic(), pollingTask);
}
}
public synchronized void removeSubscriber(Subscriber subscriber) {
if (pollingTasks.containsKey(subscriber.getTopic())) {
pollingTasks.get(subscriber.getTopic()).stopTask();
pollingTasks.remove(subscriber.getTopic());
}
}
@PreDestroy
public void stopPollingTasks() {
Iterator iterator = pollingTasks.entrySet().iterator();
while (iterator.hasNext()) {
Map.Entry entry = (Map.Entry)iterator.next();
String key = (String) entry.getKey();
pollingTasks.get(key).stopTask();
}
pollingTasks.clear();
}
}
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