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 * @version $Revision$ 023 */ 024 public class MutexTransport extends TransportFilter { 025 026 private final Object writeMutex = new Object(); 027 028 public MutexTransport(Transport next) { 029 super(next); 030 } 031 032 public FutureResponse asyncRequest(Object command, ResponseCallback responseCallback) throws IOException { 033 synchronized (writeMutex) { 034 return next.asyncRequest(command, null); 035 } 036 } 037 038 public void oneway(Object command) throws IOException { 039 synchronized (writeMutex) { 040 next.oneway(command); 041 } 042 } 043 044 public Object request(Object command) throws IOException { 045 synchronized (writeMutex) { 046 return next.request(command); 047 } 048 } 049 050 public Object request(Object command, int timeout) throws IOException { 051 synchronized (writeMutex) { 052 return next.request(command, timeout); 053 } 054 } 055 056 public String toString() { 057 return next.toString(); 058 } 059 060 }