/*
 * Copyright 1999,2004-2006 The Apache Software Foundation.
 * 
 * Licensed 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;


/**
 * The <code>ErrorHandler</code> class is used when sending messages
 * that are sent asynchronously and the application still needs to get 
 * confirmation when the message was sent successfully or when a message errored out.
 * @author Filip Hanik
 * @version 1.0
 */
public interface ErrorHandler {
    
    /**
     * Invoked if the message is dispatched asynch, and an error occurs
     * @param x ChannelException - the error that happened
     * @param id - the unique id for the message
     * @see Channel#send(Member[], Serializable, int, ErrorHandler)
     */
    public void handleError(ChannelException x, UniqueId id);
    
    /**
     * Invoked when the message has been sent successfully.
     * @param id - the unique id for the message
     * @see Channel#send(Member[], Serializable, int, ErrorHandler)
     */
    public void handleCompletion(UniqueId id);
    
}