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}