/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.apache.catalina.tribes.io;

import org.apache.catalina.tribes.ChannelMessage;


/**
 * Internal interface, similar to the MessageListener but used at the IO base The listen callback interface is used by
 * the replication system when data has been received. The interface does not care about objects and marshalling and
 * just passes the bytes straight through.
 */
public interface ListenCallback {
    /**
     * This method is invoked on the callback object to notify it that new data has been received from one of the
     * cluster nodes.
     *
     * @param data - the message bytes received from the cluster/replication system
     */
    void messageDataReceived(ChannelMessage data);

}