org.springframework.jms.connection.CachedMessageProducer Maven / Gradle / Ivy
/*
* Copyright 2002-2015 the original author or authors.
*
* Licensed 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.springframework.jms.connection;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.QueueSender;
import javax.jms.Topic;
import javax.jms.TopicPublisher;
import org.springframework.util.ClassUtils;
import org.springframework.util.ReflectionUtils;
/**
* JMS MessageProducer decorator that adapts calls to a shared MessageProducer
* instance underneath, managing QoS settings locally within the decorator.
*
* @author Juergen Hoeller
* @since 2.5.3
*/
class CachedMessageProducer implements MessageProducer, QueueSender, TopicPublisher {
// Various JMS 2.0 MessageProducer methods, if available
private static final Method setDeliveryDelayMethod =
ClassUtils.getMethodIfAvailable(MessageProducer.class, "setDeliveryDelay", long.class);
private static final Method getDeliveryDelayMethod =
ClassUtils.getMethodIfAvailable(MessageProducer.class, "getDeliveryDelay");
private static Class completionListenerClass;
private static Method sendWithCompletionListenerMethod;
private static Method sendWithDestinationAndCompletionListenerMethod;
static {
try {
completionListenerClass = ClassUtils.forName(
"javax.jms.CompletionListener", CachedMessageProducer.class.getClassLoader());
sendWithCompletionListenerMethod = MessageProducer.class.getMethod(
"send", Message.class, int.class, int.class, long.class, completionListenerClass);
sendWithDestinationAndCompletionListenerMethod = MessageProducer.class.getMethod(
"send", Destination.class, Message.class, int.class, int.class, long.class, completionListenerClass);
}
catch (Exception ex) {
// No JMS 2.0 API available
completionListenerClass = null;
}
}
private final MessageProducer target;
private Boolean originalDisableMessageID;
private Boolean originalDisableMessageTimestamp;
private Long originalDeliveryDelay;
private int deliveryMode;
private int priority;
private long timeToLive;
public CachedMessageProducer(MessageProducer target) throws JMSException {
this.target = target;
this.deliveryMode = target.getDeliveryMode();
this.priority = target.getPriority();
this.timeToLive = target.getTimeToLive();
}
@Override
public void setDisableMessageID(boolean disableMessageID) throws JMSException {
if (this.originalDisableMessageID == null) {
this.originalDisableMessageID = this.target.getDisableMessageID();
}
this.target.setDisableMessageID(disableMessageID);
}
@Override
public boolean getDisableMessageID() throws JMSException {
return this.target.getDisableMessageID();
}
@Override
public void setDisableMessageTimestamp(boolean disableMessageTimestamp) throws JMSException {
if (this.originalDisableMessageTimestamp == null) {
this.originalDisableMessageTimestamp = this.target.getDisableMessageTimestamp();
}
this.target.setDisableMessageTimestamp(disableMessageTimestamp);
}
@Override
public boolean getDisableMessageTimestamp() throws JMSException {
return this.target.getDisableMessageTimestamp();
}
public void setDeliveryDelay(long deliveryDelay) {
if (this.originalDeliveryDelay == null) {
this.originalDeliveryDelay = (Long) ReflectionUtils.invokeMethod(getDeliveryDelayMethod, this.target);
}
ReflectionUtils.invokeMethod(setDeliveryDelayMethod, this.target, deliveryDelay);
}
public long getDeliveryDelay() {
return (Long) ReflectionUtils.invokeMethod(getDeliveryDelayMethod, this.target);
}
@Override
public void setDeliveryMode(int deliveryMode) {
this.deliveryMode = deliveryMode;
}
@Override
public int getDeliveryMode() {
return this.deliveryMode;
}
@Override
public void setPriority(int priority) {
this.priority = priority;
}
@Override
public int getPriority() {
return this.priority;
}
@Override
public void setTimeToLive(long timeToLive) {
this.timeToLive = timeToLive;
}
@Override
public long getTimeToLive() {
return this.timeToLive;
}
@Override
public Destination getDestination() throws JMSException {
return this.target.getDestination();
}
@Override
public Queue getQueue() throws JMSException {
return (Queue) this.target.getDestination();
}
@Override
public Topic getTopic() throws JMSException {
return (Topic) this.target.getDestination();
}
@Override
public void send(Message message) throws JMSException {
this.target.send(message, this.deliveryMode, this.priority, this.timeToLive);
}
@Override
public void send(Message message, int deliveryMode, int priority, long timeToLive) throws JMSException {
this.target.send(message, deliveryMode, priority, timeToLive);
}
@Override
public void send(Destination destination, Message message) throws JMSException {
this.target.send(destination, message, this.deliveryMode, this.priority, this.timeToLive);
}
@Override
public void send(Destination destination, Message message, int deliveryMode, int priority, long timeToLive) throws JMSException {
this.target.send(destination, message, deliveryMode, priority, timeToLive);
}
@Override
public void send(Queue queue, Message message) throws JMSException {
this.target.send(queue, message, this.deliveryMode, this.priority, this.timeToLive);
}
@Override
public void send(Queue queue, Message message, int deliveryMode, int priority, long timeToLive) throws JMSException {
this.target.send(queue, message, deliveryMode, priority, timeToLive);
}
@Override
public void publish(Message message) throws JMSException {
this.target.send(message, this.deliveryMode, this.priority, this.timeToLive);
}
@Override
public void publish(Message message, int deliveryMode, int priority, long timeToLive) throws JMSException {
this.target.send(message, deliveryMode, priority, timeToLive);
}
@Override
public void publish(Topic topic, Message message) throws JMSException {
this.target.send(topic, message, this.deliveryMode, this.priority, this.timeToLive);
}
@Override
public void publish(Topic topic, Message message, int deliveryMode, int priority, long timeToLive) throws JMSException {
this.target.send(topic, message, deliveryMode, priority, timeToLive);
}
@Override
public void close() throws JMSException {
// It's a cached MessageProducer... reset properties only.
if (this.originalDisableMessageID != null) {
this.target.setDisableMessageID(this.originalDisableMessageID);
this.originalDisableMessageID = null;
}
if (this.originalDisableMessageTimestamp != null) {
this.target.setDisableMessageTimestamp(this.originalDisableMessageTimestamp);
this.originalDisableMessageTimestamp = null;
}
if (this.originalDeliveryDelay != null) {
ReflectionUtils.invokeMethod(setDeliveryDelayMethod, this.target, this.originalDeliveryDelay);
this.originalDeliveryDelay = null;
}
}
@Override
public String toString() {
return "Cached JMS MessageProducer: " + this.target;
}
/**
* Build a dynamic proxy that reflectively adapts to JMS 2.0 API methods, if necessary.
* Otherwise simply return this CachedMessageProducer instance itself.
*/
public MessageProducer getProxyIfNecessary() {
if (completionListenerClass != null) {
return (MessageProducer) Proxy.newProxyInstance(CachedMessageProducer.class.getClassLoader(),
new Class[] {MessageProducer.class, QueueSender.class, TopicPublisher.class},
new Jms2MessageProducerInvocationHandler());
}
else {
return this;
}
}
/**
* Reflective InvocationHandler which adapts to JMS 2.0 API methods that we
* cannot statically compile against while preserving JMS 1.1 compatibility
* (due to the new {@code javax.jms.CompletionListener} type in the signatures).
*/
private class Jms2MessageProducerInvocationHandler implements InvocationHandler {
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
try {
if (method.getName().equals("send") && args != null &&
completionListenerClass == method.getParameterTypes()[args.length - 1]) {
switch (args.length) {
case 2: // send(message, completionListener)
return sendWithCompletionListenerMethod.invoke(
target, args[0], deliveryMode, priority, timeToLive, args[1]);
case 3: // send(destination, message, completionListener)
return sendWithDestinationAndCompletionListenerMethod.invoke(
target, args[0], args[1], deliveryMode, priority, timeToLive, args[2]);
case 5: // send(message, deliveryMode, priority, timeToLive, completionListener)
return sendWithCompletionListenerMethod.invoke(target, args);
case 6: // send(destination, message, deliveryMode, priority, timeToLive, completionListener)
return sendWithDestinationAndCompletionListenerMethod.invoke(target, args);
}
}
return method.invoke(CachedMessageProducer.this, args);
}
catch (InvocationTargetException ex) {
throw ex.getTargetException();
}
}
}
}
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