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Elasticsearch subproject :server
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.action.support;
import org.elasticsearch.ElasticsearchTimeoutException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.core.TimeValue;
import org.elasticsearch.threadpool.Scheduler;
import org.elasticsearch.threadpool.ThreadPool;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.function.Consumer;
public class ListenerTimeouts {
/**
* Wraps a listener with a listener that can timeout. After the timeout period the
* {@link ActionListener#onFailure(Exception)} will be called with a
* {@link ElasticsearchTimeoutException} if the listener has not already been completed.
*
* @param threadPool used to schedule the timeout
* @param listener to that can timeout
* @param timeout period before listener failed
* @param executor to use for scheduling timeout
* @param listenerName name of the listener for timeout exception
* @return the wrapped listener that will timeout
*/
public static ActionListener wrapWithTimeout(
ThreadPool threadPool,
ActionListener listener,
TimeValue timeout,
String executor,
String listenerName
) {
return wrapWithTimeout(threadPool, timeout, executor, listener, (ignore) -> {
String timeoutMessage = "[" + listenerName + "]" + " timed out after [" + timeout + "]";
listener.onFailure(new ElasticsearchTimeoutException(timeoutMessage));
});
}
/**
* Wraps a listener with a listener that can timeout. After the timeout period the
* onTimeout Runnable will be called.
*
* @param threadPool used to schedule the timeout
* @param timeout period before listener failed
* @param executor to use for scheduling timeout
* @param listener to that can timeout
* @param onTimeout consumer will be called and the resulting wrapper will be passed to it as a parameter
* @return the wrapped listener that will timeout
*/
public static ActionListener wrapWithTimeout(
ThreadPool threadPool,
TimeValue timeout,
String executor,
ActionListener listener,
Consumer> onTimeout
) {
TimeoutableListener wrappedListener = new TimeoutableListener<>(listener, onTimeout);
wrappedListener.cancellable = threadPool.schedule(wrappedListener, timeout, executor);
return wrappedListener;
}
private static class TimeoutableListener implements ActionListener, Runnable {
private final AtomicBoolean isDone = new AtomicBoolean(false);
private final ActionListener delegate;
private final Consumer> onTimeout;
private volatile Scheduler.ScheduledCancellable cancellable;
private TimeoutableListener(ActionListener delegate, Consumer> onTimeout) {
this.delegate = delegate;
this.onTimeout = onTimeout;
}
@Override
public void onResponse(Response response) {
if (isDone.compareAndSet(false, true)) {
cancellable.cancel();
delegate.onResponse(response);
}
}
@Override
public void onFailure(Exception e) {
if (isDone.compareAndSet(false, true)) {
cancellable.cancel();
delegate.onFailure(e);
}
}
@Override
public void run() {
if (isDone.compareAndSet(false, true)) {
onTimeout.accept(this);
}
}
}
}