/*
* 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;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
import java.util.Random;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicInteger;
/**
* @author Mircea.Markus@jboss.com
* @author dberinde@redhat.com
* @since 4.1
*/
public class WorkerThread {
private static final AtomicInteger WORKER_INDEX = new AtomicInteger();
private static final Log log = LogFactory.getLog(WorkerThread.class);
private final RemoteCache remoteCache;
private volatile Future<?> future;
private final ExecutorService executor = Executors.newSingleThreadExecutor(new ThreadFactory() {
public Thread newThread(Runnable r) {
return new Thread(r, String.format("%s-Worker-%d",
Thread.currentThread().getName(), WORKER_INDEX.getAndIncrement()));
}
});
public WorkerThread(RemoteCache remoteCache) {
this.remoteCache = remoteCache;
}
private void stressInternal() throws Exception {
Random rnd = new Random();
while (!executor.isShutdown()) {
remoteCache.put(rnd.nextLong(), rnd.nextLong());
Thread.sleep(50);
}
}
/**
* Only returns when this thread added the given key value.
*/
public String put(final String key, final String value) {
Future<?> result = executor.submit(new Callable<Object>() {
public Object call() {
return remoteCache.put(key, value);
}
});
try {
return (String) result.get();
} catch (InterruptedException e) {
throw new IllegalStateException();
} catch (ExecutionException e) {
throw new RuntimeException("Error during put", e.getCause());
}
}
/**
* Does a put on the worker thread.
* Doesn't wait for the put operation to finish. However, it will wait for the previous operation on this thread to finish.
*/
public Future<?> putAsync(final String key, final String value) throws ExecutionException, InterruptedException {
if (future != null) {
future.get();
}
return executor.submit(new Callable<Object>() {
public Object call() throws Exception {
return remoteCache.put(key, value);
}
});
}
/**
* Starts doing cache put operations in a loop on the worker thread.
* Doesn't wait for the loop to finish - in fact the loop will finish only when the worker is stopped.
* However, it will wait for the previous operation on this thread to finish.
*/
public Future<?> stress() throws InterruptedException, ExecutionException {
if (future != null) {
future.get();
}
return executor.submit(new Callable<Object>() {
public Object call() throws Exception {
stressInternal();
return null;
}
});
}
/**
* Returns without waiting for the threads to finish.
*/
public void stop() {
executor.shutdown();
}
/**
* Only returns when the last operation on this thread has finished.
*/
public void awaitTermination() throws InterruptedException, ExecutionException {
executor.awaitTermination(1, TimeUnit.SECONDS);
if (future != null) {
future.get();
}
}
}