/*
* JBoss, Home of Professional Open Source
* Copyright 2010 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.infinispan.client.hotrod.impl.async;
import org.infinispan.util.concurrent.FutureListener;
import org.infinispan.util.concurrent.NotifyingFuture;
import java.util.concurrent.CopyOnWriteArraySet;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* Notifying future implementation for async calls.
*
* @author Mircea.Markus@jboss.com
* @since 4.1
*/
public class NotifyingFutureImpl<T> implements NotifyingFuture<T> {
private volatile Future<T> executing;
private volatile CopyOnWriteArraySet<FutureListener<T>> listeners;
public void setExecuting(Future<T> executing) {
this.executing = executing;
}
@Override
public NotifyingFuture<T> attachListener(FutureListener<T> futureListener) {
if (listeners == null) {
listeners = new CopyOnWriteArraySet<FutureListener<T>>();
}
listeners.add(futureListener);
return this;
}
@Override
public boolean cancel(boolean mayInterruptIfRunning) {
try {
return executing.cancel(mayInterruptIfRunning);
} finally {
notifyFutureCompletion();
}
}
public void notifyFutureCompletion() {
if (listeners != null) {
for (FutureListener<T> listener : listeners) {
listener.futureDone(this);
}
}
}
@Override
public boolean isCancelled() {
return executing.isCancelled();
}
@Override
public boolean isDone() {
return executing.isDone();
}
@Override
public T get() throws InterruptedException, ExecutionException {
return executing.get();
}
@Override
public T get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
return executing.get(timeout, unit);
}
}