001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.transport;
018
019import java.io.IOException;
020
021
022/**
023 * An asynchronous listener of commands
024 *
025 * 
026 */
027public interface TransportListener {
028    
029    /**
030     * called to process a command
031     * @param command
032     */
033    void onCommand(Object command);
034    /**
035     * An unrecoverable exception has occured on the transport
036     * @param error
037     */
038    void onException(IOException error);
039    
040    /**
041     * The transport has suffered an interuption from which it hopes to recover
042     *
043     */
044    void transportInterupted();
045    
046    
047    /**
048     * The transport has resumed after an interuption
049     *
050     */
051    void transportResumed();
052    
053}