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ActiveMQ component for Camel
/*
* 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.activemq;
import java.lang.reflect.Constructor;
import javax.jms.ConnectionFactory;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.Service;
import org.apache.camel.RuntimeCamelException;
import org.apache.camel.component.jms.JmsConfiguration;
import org.springframework.jms.connection.CachingConnectionFactory;
import org.springframework.jms.connection.DelegatingConnectionFactory;
import org.springframework.jms.connection.JmsTransactionManager;
import org.springframework.jms.connection.SingleConnectionFactory;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.transaction.PlatformTransactionManager;
public class ActiveMQConfiguration extends JmsConfiguration {
private ActiveMQComponent activeMQComponent;
private String brokerURL = ActiveMQConnectionFactory.DEFAULT_BROKER_URL;
private volatile boolean customBrokerURL;
private boolean useSingleConnection;
private boolean usePooledConnection = true;
private boolean trustAllPackages;
public ActiveMQConfiguration() {
}
public String getBrokerURL() {
return brokerURL;
}
/**
* Sets the broker URL to use to connect to ActiveMQ broker.
*/
public void setBrokerURL(String brokerURL) {
this.brokerURL = brokerURL;
this.customBrokerURL = true;
}
public boolean isUseSingleConnection() {
return useSingleConnection;
}
/**
* @deprecated - use JmsConfiguration#getUsername()
* @see JmsConfiguration#getUsername()
*/
@Deprecated
public String getUserName() {
return getUsername();
}
/**
* @deprecated - use JmsConfiguration#setUsername(String)
* @see JmsConfiguration#setUsername(String)
*/
@Deprecated
public void setUserName(String userName) {
setUsername(userName);
}
/**
* Enables or disables whether a Spring {@link SingleConnectionFactory} will be used so that when messages are sent
* to ActiveMQ from outside of a message consuming thread, pooling will be used rather than the default with the
* Spring {@link JmsTemplate} which will create a new connection, session, producer for each message then close them
* all down again.
*
* The default value is false and a pooled connection is used by default.
*/
public void setUseSingleConnection(boolean useSingleConnection) {
this.useSingleConnection = useSingleConnection;
}
public boolean isUsePooledConnection() {
return usePooledConnection;
}
/**
* Enables or disables whether a PooledConnectionFactory will be used so that when messages are sent to ActiveMQ
* from outside of a message consuming thread, pooling will be used rather than the default with the Spring
* {@link JmsTemplate} which will create a new connection, session, producer for each message then close them all
* down again.
*
* The default value is true.
*/
public void setUsePooledConnection(boolean usePooledConnection) {
this.usePooledConnection = usePooledConnection;
}
public boolean isTrustAllPackages() {
return trustAllPackages;
}
/**
* ObjectMessage objects depend on Java serialization of marshal/unmarshal object payload. This process is generally
* considered unsafe as malicious payload can exploit the host system. That's why starting with versions 5.12.2 and
* 5.13.0, ActiveMQ enforces users to explicitly whitelist packages that can be exchanged using ObjectMessages.
*
* This option can be set to true to trust all packages (eg whitelist is *).
*
* See more details at: http://activemq.apache.org/objectmessage.html
*/
public void setTrustAllPackages(boolean trustAllPackages) {
this.trustAllPackages = trustAllPackages;
}
/**
* Factory method to create a default transaction manager if one is not specified
*/
@Override
protected PlatformTransactionManager createTransactionManager() {
JmsTransactionManager answer = new JmsTransactionManager(getOrCreateConnectionFactory());
answer.afterPropertiesSet();
return answer;
}
protected void setActiveMQComponent(ActiveMQComponent activeMQComponent) {
this.activeMQComponent = activeMQComponent;
}
@Override
public void setConnectionFactory(ConnectionFactory connectionFactory) {
ActiveMQConnectionFactory acf = null;
ConnectionFactory target = connectionFactory;
if (target instanceof CachingConnectionFactory) {
CachingConnectionFactory ccf = (CachingConnectionFactory) target;
target = ccf.getTargetConnectionFactory();
}
if (target instanceof DelegatingConnectionFactory) {
DelegatingConnectionFactory dcf = (DelegatingConnectionFactory) target;
target = dcf.getTargetConnectionFactory();
}
if (target instanceof ActiveMQConnectionFactory) {
acf = (ActiveMQConnectionFactory) target;
}
if (acf != null) {
if (customBrokerURL) {
// okay a custom broker url was configured which we want to ensure
// the real target connection factory knows about
acf.setBrokerURL(brokerURL);
} else {
// its the opposite the target has the brokerURL which we want to set on this
setBrokerURL(acf.getBrokerURL());
}
}
super.setConnectionFactory(connectionFactory);
}
@Override
protected ConnectionFactory createConnectionFactory() {
org.apache.activemq.spring.ActiveMQConnectionFactory answer
= new org.apache.activemq.spring.ActiveMQConnectionFactory();
answer.setTrustAllPackages(trustAllPackages);
if (getUsername() != null) {
answer.setUserName(getUsername());
}
if (getPassword() != null) {
answer.setPassword(getPassword());
}
if (answer.getBeanName() == null) {
answer.setBeanName("Camel");
}
answer.setBrokerURL(getBrokerURL());
if (isUseSingleConnection()) {
SingleConnectionFactory scf = new SingleConnectionFactory(answer);
if (activeMQComponent != null) {
activeMQComponent.addSingleConnectionFactory(scf);
}
return scf;
} else if (isUsePooledConnection()) {
ConnectionFactory pcf = createPooledConnectionFactory(answer);
if (activeMQComponent != null) {
activeMQComponent.addPooledConnectionFactoryService((Service) pcf);
}
return pcf;
} else {
return answer;
}
}
protected ConnectionFactory createPooledConnectionFactory(ActiveMQConnectionFactory connectionFactory) {
try {
Class type = loadClass("org.apache.activemq.pool.PooledConnectionFactory", getClass().getClassLoader());
Constructor constructor = type.getConstructor(org.apache.activemq.ActiveMQConnectionFactory.class);
return (ConnectionFactory) constructor.newInstance(connectionFactory);
} catch (Exception e) {
throw new RuntimeCamelException("Failed to instantiate PooledConnectionFactory: " + e, e);
}
}
public static Class loadClass(String name, ClassLoader loader) throws ClassNotFoundException {
ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
if (contextClassLoader != null) {
try {
return contextClassLoader.loadClass(name);
} catch (ClassNotFoundException e) {
return loader.loadClass(name);
}
} else {
return loader.loadClass(name);
}
}
}
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