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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.tuscany.sca.binding.jms.provider;
import java.io.IOException;
import java.util.logging.Logger;
import javax.jms.BytesMessage;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.tuscany.sca.binding.jms.JMSBinding;
import org.apache.tuscany.sca.binding.jms.JMSBindingConstants;
import org.apache.tuscany.sca.binding.jms.JMSBindingException;
import org.apache.tuscany.sca.binding.jms.provider.xml.XMLHelper;
import org.apache.tuscany.sca.binding.jms.provider.xml.XMLHelperFactory;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.interfacedef.util.FaultException;
/**
* MessageProcessor for sending/receiving XML over javax.jms.TextMessage or javax.jms.BytesMessage
* with the JMSBinding.
* This is very specific to the default wire format and is not tied into the usual hierarchy
* of message processors
*
* @version $Rev$ $Date$
*/
public class DefaultMessageProcessor extends AbstractMessageProcessor {
private static final Logger logger = Logger.getLogger(DefaultMessageProcessor.class.getName());
private XMLHelper xmlHelper;
public DefaultMessageProcessor(JMSBinding jmsBinding, ExtensionPointRegistry registry) {
super(jmsBinding);
this.xmlHelper = XMLHelperFactory.createXMLHelper(registry);
}
// inherited methods that don't do anything useful
@Override
protected Message createJMSMessage(Session session, Object o) {
// should not be used
return null;
}
@Override
protected Object extractPayload(Message msg) {
// if it's not a text/bytes message or a fault then we don;t know what to do with it
return null;
}
// TODO - This makes the assumption that whatever the text/bytes configuration of the
// jms binding, unchecked faults will be sent as bytes.
@Override
public Message createFaultMessage(Session session, Throwable o) {
return createFaultJMSBytesMessage(session, o);
}
// handle text messages
public Object extractPayloadFromJMSTextMessage(Message msg, Object wrapper) {
if (msg instanceof TextMessage) {
try {
String xml = ((TextMessage) msg).getText();
Object os;
if (xml != null && xml.length() > 0) {
os = xmlHelper.load(xml);
} else {
os = null;
}
if (wrapper != null){
return xmlHelper.wrap(wrapper, os);
}
return os;
} catch (JMSException e) {
throw new JMSBindingException(e);
} catch (IOException e) {
throw new JMSBindingException(e);
}
} else {
// handle the non-text fault case
return super.extractPayloadFromJMSMessage(msg);
}
}
public Message insertPayloadIntoJMSTextMessage(Session session, Object o, boolean unwrap) {
try {
TextMessage message = session.createTextMessage();
if ((o instanceof Object[])) {
if (unwrap){
Object firstElement = xmlHelper.getFirstChild(((Object[])o)[0]);
if (firstElement == null ) {
message.setText(null);
} else {
message.setText(xmlHelper.saveAsString(firstElement));
}
}else {
message.setText(xmlHelper.saveAsString(((Object[])o)[0]));
}
} else if (o != null) {
if (unwrap){
Object firstElement = xmlHelper.getFirstChild(o);
if (firstElement == null ) {
message.setText("");
} else {
message.setText(xmlHelper.saveAsString(firstElement));
}
}else {
message.setText(xmlHelper.saveAsString(o));
}
}
return message;
} catch (JMSException e) {
throw new JMSBindingException(e);
}
}
public Message createFaultJMSTextMessage(Session session, Throwable o) {
if (session == null) {
logger.fine("no response session to create fault message: " + String.valueOf(o));
return null;
}
if (o instanceof FaultException) {
try {
TextMessage message = session.createTextMessage();
message.setText(xmlHelper.saveAsString(((FaultException)o).getFaultInfo()));
message.setBooleanProperty(JMSBindingConstants.FAULT_PROPERTY, true);
return message;
} catch (JMSException e) {
throw new JMSBindingException(e);
}
} else {
// handle the non XML fault case
return super.createFaultMessage(session, o);
}
}
// handle bytes messages
public Object extractPayloadFromJMSBytesMessage(Message msg, Object wrapper) {
if (msg instanceof BytesMessage) {
try {
Object os;
long noOfBytes = ((BytesMessage) msg).getBodyLength();
byte[] bytes = new byte[(int) noOfBytes];
((BytesMessage) msg).readBytes(bytes);
((BytesMessage)msg).reset();
if ((bytes != null) && (bytes.length > 0)) {
os = xmlHelper.load(new String(bytes));
} else {
os = null;
}
if (wrapper != null){
return xmlHelper.wrap(wrapper, os);
}
return os;
} catch (JMSException e) {
throw new JMSBindingException(e);
} catch (IOException e) {
throw new JMSBindingException(e);
}
} else {
// trap the non-bytes fault case
return super.extractPayloadFromJMSMessage(msg);
}
}
public Message insertPayloadIntoJMSBytesMessage(Session session, Object o, boolean unwrap) {
try {
BytesMessage message = session.createBytesMessage();
if ((o instanceof Object[])) {
if (unwrap){
Object firstElement = xmlHelper.getFirstChild(((Object[])o)[0]);
if (firstElement == null ) {
//do nothing, the message will just be set with a byte[0]
} else {
message.writeBytes(xmlHelper.saveAsString(firstElement).getBytes());
}
}else {
message.writeBytes(xmlHelper.saveAsString(((Object[]) o)[0]).getBytes());
}
} else if (o != null) {
if (unwrap) {
Object firstElement = xmlHelper.getFirstChild(o);
if (firstElement == null ) {
//do nothing, the message will just be set with a byte[0]
} else {
message.writeBytes(xmlHelper.saveAsString(firstElement).getBytes());
}
} else {
message.writeBytes(xmlHelper.saveAsString(o).getBytes());
}
}
return message;
} catch (JMSException e) {
throw new JMSBindingException(e);
}
}
public Message createFaultJMSBytesMessage(Session session, Throwable o) {
if (session == null) {
logger.fine("no response session to create fault message: " + String.valueOf(o));
return null;
}
if (o instanceof FaultException) {
try {
BytesMessage message = session.createBytesMessage();
String s = xmlHelper.saveAsString(((FaultException)o).getFaultInfo());
message.writeBytes(s.getBytes());
message.setBooleanProperty(JMSBindingConstants.FAULT_PROPERTY, true);
return message;
} catch (JMSException e) {
throw new JMSBindingException(e);
}
} else {
return super.createFaultMessage(session, o);
}
}
}
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