org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor Maven / Gradle / Ivy
/*
* Licensed to ElasticSearch and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. ElasticSearch licenses this
* file to you 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.elasticsearch.common.util.concurrent;
import org.elasticsearch.ElasticSearchIllegalStateException;
import java.util.concurrent.*;
/**
* An extension to thread pool executor, allowing (in the future) to add specific additional stats to it.
*/
public class EsThreadPoolExecutor extends ThreadPoolExecutor {
private volatile ShutdownListener listener;
private final Object monitor = new Object();
public EsThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue workQueue, ThreadFactory threadFactory) {
super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory, new EsAbortPolicy());
}
public EsThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue workQueue, ThreadFactory threadFactory, RejectedExecutionHandler handler) {
super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory, handler);
}
public void shutdown(ShutdownListener listener) {
synchronized (monitor) {
if (this.listener != null) {
throw new ElasticSearchIllegalStateException("Shutdown was already called on this thread pool");
}
if (isTerminated()) {
listener.onTerminated();
} else {
this.listener = listener;
}
shutdown();
}
}
@Override
protected synchronized void terminated() {
super.terminated();
synchronized (monitor) {
if (listener != null) {
try {
listener.onTerminated();
} finally {
listener = null;
}
}
}
}
public static interface ShutdownListener {
public void onTerminated();
}
}