001/**
002 * Copyright (C) 2012 FuseSource, Inc.
003 * http://fusesource.com
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * 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 */
017
018package org.fusesource.hawtdispatch.transport;
019
020import java.io.IOException;
021
022
023/**
024 * An asynchronous listener of commands
025 *
026 */
027public interface TransportListener {
028    
029    /**
030     * called to process a command
031     * @param command
032     */
033    void onTransportCommand(Object command);
034
035    /**
036     * transport can now accept more commands for transmission. 
037     */
038    void onRefill();
039
040    /**
041     * An unrecoverable exception has occured on the transport
042     * @param error
043     */
044    void onTransportFailure(IOException error);
045    
046    /**
047     * The transport has been connected.
048     */
049    public void onTransportConnected();
050
051    /**
052     * The transport has been disconnected.
053     */
054    public void onTransportDisconnected();
055
056}