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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.dmaappolling;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
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 ConcurrentHashMap<String, ScheduledFuture> pollingRequests = new ConcurrentHashMap<String, ScheduledFuture>();
private ScheduledExecutorService service = Executors.newSingleThreadScheduledExecutor();
public void addSubscriber(Subscriber subscriber) {
if (!pollingRequests.containsKey(subscriber.getTopic())) {
DMaaPPollingRequest pollingTask = new DMaaPPollingRequest(subscriber, droolsEngine);
ScheduledFuture future = service
.scheduleAtFixedRate(pollingTask, 0, subscriber.getPeriod(), TimeUnit.MILLISECONDS);
pollingRequests.put(subscriber.getTopic(), future);
}
}
public void removeSubscriber(Subscriber subscriber) {
ScheduledFuture future = pollingRequests.get(subscriber.getTopic());
if (future != null) {
future.cancel(true);
}
pollingRequests.remove(subscriber.getTopic());
}
}
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