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     */
017    package org.apache.activemq.transport;
018    
019    import java.io.IOException;
020    
021    
022    /**
023     * An asynchronous listener of commands
024     *
025     * 
026     */
027    public 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    }