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/*
* 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;
import java.util.concurrent.CountDownLatch;
/**
* An action listener that allows passing in a {@link CountDownLatch} that
* will be counted down after onResponse or onFailure is called
*/
public class LatchedActionListener implements ActionListener {
private final ActionListener delegate;
private final CountDownLatch latch;
public LatchedActionListener(ActionListener delegate, CountDownLatch latch) {
this.delegate = delegate;
this.latch = latch;
}
@Override
public void onResponse(T t) {
try {
delegate.onResponse(t);
} finally {
latch.countDown();
}
}
@Override
public void onFailure(Exception e) {
try {
delegate.onFailure(e);
} finally {
latch.countDown();
}
}
}