org.apache.camel.component.jms.JmsMessage Maven / Gradle / Ivy
/*
* 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.camel.component.jms;
import java.io.File;
import java.util.Map;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.Topic;
import org.apache.camel.Exchange;
import org.apache.camel.RuntimeExchangeException;
import org.apache.camel.support.DefaultMessage;
import org.apache.camel.support.ExchangeHelper;
import org.apache.camel.util.ObjectHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.camel.support.MessageHelper.copyBody;
/**
* Represents a {@link org.apache.camel.Message} for working with JMS
*/
public class JmsMessage extends DefaultMessage {
private static final Logger LOG = LoggerFactory.getLogger(JmsMessage.class);
private Message jmsMessage;
private Session jmsSession;
private JmsBinding binding;
public JmsMessage(Exchange exchange, Message jmsMessage, Session jmsSession, JmsBinding binding) {
super(exchange);
setJmsMessage(jmsMessage);
setJmsSession(jmsSession);
setBinding(binding);
}
public void init(Exchange exchange, Message jmsMessage, Session jmsSession, JmsBinding binding) {
setExchange(exchange);
setJmsMessage(jmsMessage);
setJmsSession(jmsSession);
setBinding(binding);
// need to populate initial headers when we use pooled exchanges
populateInitialHeaders(getHeaders());
}
@Override
public void reset() {
super.reset();
setExchange(null);
jmsMessage = null;
jmsSession = null;
binding = null;
}
@Override
public String toString() {
// do not print jmsMessage as there could be sensitive details
if (jmsMessage != null) {
try {
return "JmsMessage[JmsMessageID: " + jmsMessage.getJMSMessageID() + "]";
} catch (Exception e) {
// ignore
}
}
return "JmsMessage@" + ObjectHelper.getIdentityHashCode(this);
}
@Override
public void copyFrom(org.apache.camel.Message that) {
if (that == this) {
// the same instance so do not need to copy
return;
}
// must initialize headers before we set the JmsMessage to avoid Camel
// populating it before we do the copy
getHeaders().clear();
boolean copyMessageId = true;
if (that instanceof JmsMessage) {
JmsMessage thatMessage = (JmsMessage) that;
this.jmsMessage = thatMessage.jmsMessage;
if (this.jmsMessage != null) {
// for performance lets not copy the messageID if we are a JMS message
copyMessageId = false;
}
}
if (copyMessageId) {
setMessageId(that.getMessageId());
}
// cover over exchange if none has been assigned
if (getExchange() == null) {
setExchange(that.getExchange());
}
// copy body and fault flag
copyBody(that, this);
// we have already cleared the headers
if (that.hasHeaders()) {
getHeaders().putAll(that.getHeaders());
}
}
public JmsBinding getBinding() {
if (binding == null) {
binding = ExchangeHelper.getBinding(getExchange(), JmsBinding.class);
}
return binding;
}
public void setBinding(JmsBinding binding) {
this.binding = binding;
}
/**
* Returns the underlying JMS message
*/
public Message getJmsMessage() {
return jmsMessage;
}
public void setJmsMessage(Message jmsMessage) {
if (jmsMessage != null) {
try {
setMessageId(jmsMessage.getJMSMessageID());
} catch (JMSException e) {
LOG.warn("Unable to retrieve JMSMessageID from JMS Message", e);
}
}
this.jmsMessage = jmsMessage;
}
/**
* Returns the underlying JMS session.
*
* This may be null if using {@link org.apache.camel.component.jms.JmsPollingConsumer}, or the broker
* component from Apache ActiveMQ 5.11.x or older.
*/
public Session getJmsSession() {
return jmsSession;
}
public void setJmsSession(Session jmsSession) {
this.jmsSession = jmsSession;
}
@Override
public void setBody(Object body) {
super.setBody(body);
if (body == null) {
// preserver headers even if we set body to null
ensureInitialHeaders();
// remove underlying jmsMessage since we mutated body to null
jmsMessage = null;
}
}
@Override
public Object getHeader(String name) {
ensureInitialHeaders();
return super.getHeader(name);
}
@Override
public Map getHeaders() {
ensureInitialHeaders();
return super.getHeaders();
}
@Override
public Object removeHeader(String name) {
ensureInitialHeaders();
return super.removeHeader(name);
}
@Override
public void setHeaders(Map headers) {
ensureInitialHeaders();
super.setHeaders(headers);
}
@Override
public void setHeader(String name, Object value) {
ensureInitialHeaders();
super.setHeader(name, value);
}
@Override
public JmsMessage newInstance() {
JmsMessage answer = new JmsMessage(null, null, null, binding);
answer.setCamelContext(getCamelContext());
return answer;
}
/**
* Returns true if a new JMS message instance should be created to send to the next component
*/
public boolean shouldCreateNewMessage() {
return super.hasPopulatedHeaders();
}
/**
* Ensure that the headers have been populated from the underlying JMS message before we start mutating the headers
*/
protected void ensureInitialHeaders() {
if (jmsMessage != null && !hasPopulatedHeaders()) {
// we have not populated headers so force this by creating
// new headers and set it on super
super.setHeaders(createHeaders());
}
}
@Override
protected Object createBody() {
if (jmsMessage != null) {
return getBinding().extractBodyFromJms(getExchange(), jmsMessage);
}
return null;
}
@Override
protected void populateInitialHeaders(Map map) {
if (jmsMessage != null && map != null) {
map.putAll(getBinding().extractHeadersFromJms(jmsMessage, getExchange()));
try {
map.put(Exchange.MESSAGE_TIMESTAMP, jmsMessage.getJMSTimestamp());
} catch (JMSException e) {
// ignore
}
}
}
@Override
protected String createMessageId() {
if (jmsMessage == null) {
LOG.trace("No javax.jms.Message set so generating a new message id");
return super.createMessageId();
}
try {
String id = getDestinationAsString(jmsMessage.getJMSDestination());
if (id != null) {
id += jmsMessage.getJMSMessageID();
} else {
id = jmsMessage.getJMSMessageID();
}
return getSanitizedString(id);
} catch (JMSException e) {
throw new RuntimeExchangeException("Unable to retrieve JMSMessageID from JMS Message", getExchange(), e);
}
}
@Override
protected Boolean isTransactedRedelivered() {
if (jmsMessage != null) {
return JmsMessageHelper.getJMSRedelivered(jmsMessage);
} else {
return null;
}
}
private String getDestinationAsString(Destination destination) throws JMSException {
String result = null;
if (destination == null) {
result = "null destination!" + File.separator;
} else if (destination instanceof Topic) {
result = "topic" + File.separator + ((Topic) destination).getTopicName() + File.separator;
} else if (destination instanceof Queue) {
result = "queue" + File.separator + ((Queue) destination).getQueueName() + File.separator;
}
return result;
}
private String getSanitizedString(Object value) {
return value != null ? value.toString().replaceAll("[^a-zA-Z0-9\\.\\_\\-]", "_") : "";
}
}