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.stomp;
018
019 import java.io.IOException;
020 import java.security.cert.X509Certificate;
021
022 import javax.jms.JMSException;
023
024 import org.apache.activemq.broker.BrokerContext;
025 import org.apache.activemq.command.Command;
026 import org.apache.activemq.transport.Transport;
027 import org.apache.activemq.transport.TransportFilter;
028 import org.apache.activemq.transport.TransportListener;
029 import org.apache.activemq.transport.tcp.SslTransport;
030 import org.apache.activemq.util.IOExceptionSupport;
031 import org.slf4j.Logger;
032 import org.slf4j.LoggerFactory;
033
034 /**
035 * The StompTransportFilter normally sits on top of a TcpTransport that has been
036 * configured with the StompWireFormat and is used to convert STOMP commands to
037 * ActiveMQ commands. All of the conversion work is done by delegating to the
038 * ProtocolConverter.
039 *
040 * @author <a href="http://hiramchirino.com">chirino</a>
041 */
042 public class StompTransportFilter extends TransportFilter implements StompTransport {
043 private static final Logger LOG = LoggerFactory.getLogger(StompTransportFilter.class);
044 private final ProtocolConverter protocolConverter;
045 private final FrameTranslator frameTranslator;
046
047 private boolean trace;
048
049 public StompTransportFilter(Transport next, FrameTranslator translator, BrokerContext brokerContext) {
050 super(next);
051 this.frameTranslator = translator;
052 this.protocolConverter = new ProtocolConverter(this, translator, brokerContext);
053 }
054
055 public void oneway(Object o) throws IOException {
056 try {
057 final Command command = (Command)o;
058 protocolConverter.onActiveMQCommand(command);
059 } catch (JMSException e) {
060 throw IOExceptionSupport.create(e);
061 }
062 }
063
064 public void onCommand(Object command) {
065 try {
066 if (trace) {
067 LOG.trace("Received: \n" + command);
068 }
069
070 protocolConverter.onStompCommand((StompFrame)command);
071 } catch (IOException e) {
072 onException(e);
073 } catch (JMSException e) {
074 onException(IOExceptionSupport.create(e));
075 }
076 }
077
078 public void sendToActiveMQ(Command command) {
079 TransportListener l = transportListener;
080 if (l!=null) {
081 l.onCommand(command);
082 }
083 }
084
085 public void sendToStomp(StompFrame command) throws IOException {
086 if (trace) {
087 LOG.trace("Sending: \n" + command);
088 }
089 Transport n = next;
090 if (n!=null) {
091 n.oneway(command);
092 }
093 }
094
095 public FrameTranslator getFrameTranslator() {
096 return frameTranslator;
097 }
098
099 public X509Certificate[] getPeerCertificates() {
100 if(next instanceof SslTransport) {
101 X509Certificate[] peerCerts = ((SslTransport)next).getPeerCertificates();
102 if (trace && peerCerts != null) {
103 LOG.debug("Peer Identity has been verified\n");
104 }
105 return peerCerts;
106 }
107 return null;
108 }
109
110 public boolean isTrace() {
111 return trace;
112 }
113
114 public void setTrace(boolean trace) {
115 this.trace = trace;
116 }
117 }