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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.transport;
import org.elasticsearch.cluster.node.DiscoveryNode;
/**
* A listener interface that allows to react on transport events. All methods may be
* executed on network threads. Consumers must fork in the case of long running or blocking
* operations.
*/
public interface TransportConnectionListener {
/**
* Called once a connection was opened
* @param connection the connection
*/
default void onConnectionOpened(Transport.Connection connection) {}
/**
* Called once a connection ws closed.
* @param connection the closed connection
*/
default void onConnectionClosed(Transport.Connection connection) {}
/**
* Called once a node connection is opened and registered.
*/
default void onNodeConnected(DiscoveryNode node, Transport.Connection connection) {}
/**
* Called once a node connection is closed and unregistered.
*/
default void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {}
}