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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.cluster;
import java.util.concurrent.Executor;
/**
* Must be implemented by a node collection which wants
* it's node state monitored by a ClusterMonitor
*
* @author <a href="mailto:bratseth@yahoo-inc.com">Jon S Bratseth</a>
*/
public interface NodeManager<T> {
/** Called when a failed node is working (ready for production) again */
public void working(T node);
/** Called when a working node fails */
public void failed(T node);
/** Called when a node should be pinged */
public void ping(T node, Executor executor);
}
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