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.util.HashMap;
021 import java.util.Map;
022
023 import javax.jms.Destination;
024 import javax.jms.JMSException;
025
026 import com.thoughtworks.xstream.XStream;
027 import com.thoughtworks.xstream.io.json.JsonHierarchicalStreamDriver;
028 import org.apache.activemq.advisory.AdvisorySupport;
029 import org.apache.activemq.command.*;
030
031 /**
032 * Implements ActiveMQ 4.0 translations
033 */
034 public class LegacyFrameTranslator implements FrameTranslator {
035
036
037 public ActiveMQMessage convertFrame(ProtocolConverter converter, StompFrame command) throws JMSException, ProtocolException {
038 final Map headers = command.getHeaders();
039 final ActiveMQMessage msg;
040 /*
041 * To reduce the complexity of this method perhaps a Chain of Responsibility
042 * would be a better implementation
043 */
044 if (headers.containsKey(Stomp.Headers.AMQ_MESSAGE_TYPE)) {
045 String intendedType = (String)headers.get(Stomp.Headers.AMQ_MESSAGE_TYPE);
046 if(intendedType.equalsIgnoreCase("text")){
047 ActiveMQTextMessage text = new ActiveMQTextMessage();
048 try {
049 text.setText(new String(command.getContent(), "UTF-8"));
050 } catch (Throwable e) {
051 throw new ProtocolException("Text could not bet set: " + e, false, e);
052 }
053 msg = text;
054 } else if(intendedType.equalsIgnoreCase("bytes")) {
055 ActiveMQBytesMessage byteMessage = new ActiveMQBytesMessage();
056 byteMessage.writeBytes(command.getContent());
057 msg = byteMessage;
058 } else {
059 throw new ProtocolException("Unsupported message type '"+intendedType+"'",false);
060 }
061 }else if (headers.containsKey(Stomp.Headers.CONTENT_LENGTH)) {
062 headers.remove(Stomp.Headers.CONTENT_LENGTH);
063 ActiveMQBytesMessage bm = new ActiveMQBytesMessage();
064 bm.writeBytes(command.getContent());
065 msg = bm;
066 } else {
067 ActiveMQTextMessage text = new ActiveMQTextMessage();
068 try {
069 text.setText(new String(command.getContent(), "UTF-8"));
070 } catch (Throwable e) {
071 throw new ProtocolException("Text could not bet set: " + e, false, e);
072 }
073 msg = text;
074 }
075 FrameTranslator.Helper.copyStandardHeadersFromFrameToMessage(converter, command, msg, this);
076 return msg;
077 }
078
079 public StompFrame convertMessage(ProtocolConverter converter, ActiveMQMessage message) throws IOException, JMSException {
080 StompFrame command = new StompFrame();
081 command.setAction(Stomp.Responses.MESSAGE);
082 Map<String, String> headers = new HashMap<String, String>(25);
083 command.setHeaders(headers);
084
085 FrameTranslator.Helper.copyStandardHeadersFromMessageToFrame(converter, message, command, this);
086
087 if (message.getDataStructureType() == ActiveMQTextMessage.DATA_STRUCTURE_TYPE) {
088
089 ActiveMQTextMessage msg = (ActiveMQTextMessage)message.copy();
090 command.setContent(msg.getText().getBytes("UTF-8"));
091
092 } else if (message.getDataStructureType() == ActiveMQBytesMessage.DATA_STRUCTURE_TYPE) {
093
094 ActiveMQBytesMessage msg = (ActiveMQBytesMessage)message.copy();
095 msg.setReadOnlyBody(true);
096 byte[] data = new byte[(int)msg.getBodyLength()];
097 msg.readBytes(data);
098
099 headers.put(Stomp.Headers.CONTENT_LENGTH, "" + data.length);
100 command.setContent(data);
101 } else if (message.getDataStructureType() == ActiveMQMessage.DATA_STRUCTURE_TYPE &&
102 AdvisorySupport.ADIVSORY_MESSAGE_TYPE.equals(message.getType())) {
103
104 FrameTranslator.Helper.copyStandardHeadersFromMessageToFrame(
105 converter, message, command, this);
106
107 String body = marshallAdvisory(message.getDataStructure());
108 command.setContent(body.getBytes("UTF-8"));
109 }
110 return command;
111 }
112
113 public String convertDestination(ProtocolConverter converter, Destination d) {
114 if (d == null) {
115 return null;
116 }
117 ActiveMQDestination activeMQDestination = (ActiveMQDestination)d;
118 String physicalName = activeMQDestination.getPhysicalName();
119
120 String rc = converter.getCreatedTempDestinationName(activeMQDestination);
121 if( rc!=null ) {
122 return rc;
123 }
124
125 StringBuffer buffer = new StringBuffer();
126 if (activeMQDestination.isQueue()) {
127 if (activeMQDestination.isTemporary()) {
128 buffer.append("/remote-temp-queue/");
129 } else {
130 buffer.append("/queue/");
131 }
132 } else {
133 if (activeMQDestination.isTemporary()) {
134 buffer.append("/remote-temp-topic/");
135 } else {
136 buffer.append("/topic/");
137 }
138 }
139 buffer.append(physicalName);
140 return buffer.toString();
141 }
142
143 public ActiveMQDestination convertDestination(ProtocolConverter converter, String name) throws ProtocolException {
144 if (name == null) {
145 return null;
146 } else if (name.startsWith("/queue/")) {
147 String qName = name.substring("/queue/".length(), name.length());
148 return ActiveMQDestination.createDestination(qName, ActiveMQDestination.QUEUE_TYPE);
149 } else if (name.startsWith("/topic/")) {
150 String tName = name.substring("/topic/".length(), name.length());
151 return ActiveMQDestination.createDestination(tName, ActiveMQDestination.TOPIC_TYPE);
152 } else if (name.startsWith("/remote-temp-queue/")) {
153 String tName = name.substring("/remote-temp-queue/".length(), name.length());
154 return ActiveMQDestination.createDestination(tName, ActiveMQDestination.TEMP_QUEUE_TYPE);
155 } else if (name.startsWith("/remote-temp-topic/")) {
156 String tName = name.substring("/remote-temp-topic/".length(), name.length());
157 return ActiveMQDestination.createDestination(tName, ActiveMQDestination.TEMP_TOPIC_TYPE);
158 } else if (name.startsWith("/temp-queue/")) {
159 return converter.createTempQueue(name);
160 } else if (name.startsWith("/temp-topic/")) {
161 return converter.createTempTopic(name);
162 } else {
163 throw new ProtocolException("Illegal destination name: [" + name + "] -- ActiveMQ STOMP destinations "
164 + "must begin with one of: /queue/ /topic/ /temp-queue/ /temp-topic/");
165 }
166 }
167
168 /**
169 * Return an Advisory message as a JSON formatted string
170 * @param ds
171 * @return
172 */
173 protected String marshallAdvisory(final DataStructure ds) {
174 XStream xstream = new XStream(new JsonHierarchicalStreamDriver());
175 xstream.setMode(XStream.NO_REFERENCES);
176 xstream.aliasPackage("", "org.apache.activemq.command");
177 return xstream.toXML(ds);
178 }
179 }