/**
* 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.activemq.camel.component;
import java.lang.reflect.Constructor;
import javax.jms.ConnectionFactory;
import org.apache.activemq.spring.ActiveMQConnectionFactory;
import org.apache.camel.component.jms.JmsConfiguration;
import org.springframework.jms.connection.SingleConnectionFactory;
import org.springframework.jms.connection.JmsTransactionManager;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.transaction.PlatformTransactionManager;
/**
* @version $Revision: 658393 $
*/
public class ActiveMQConfiguration extends JmsConfiguration {
private String brokerURL = ActiveMQConnectionFactory.DEFAULT_BROKER_URL;
private boolean useSingleConnection = false;
private boolean usePooledConnection = true;
private String userName;
private String password;
public ActiveMQConfiguration() {
}
public String getBrokerURL() {
return brokerURL;
}
/**
* Sets the broker URL to use to connect to ActiveMQ using the
* <a href="http://activemq.apache.org/configuring-transports.html">ActiveMQ URI format</a>
*
* @param brokerURL the URL of the broker.
*/
public void setBrokerURL(String brokerURL) {
this.brokerURL = brokerURL;
}
public boolean isUseSingleConnection() {
return useSingleConnection;
}
public String getUserName() {
return userName;
}
/**
* Sets the username to be used to login to ActiveMQ
* @param userName
*/
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
/**
* Sets the password/passcode used to login to ActiveMQ
*
* @param password
*/
public void setPassword(String password) {
this.password = password;
}
/**
* 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.
* <p/>
* The default value is true so that a single connection is used by default.
*
* @param useSingleConnection
*/
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.
* <p/>
* The default value is false by default as it requires an extra dependency on commons-pool.
*/
public void setUsePooledConnection(boolean usePooledConnection) {
this.usePooledConnection = usePooledConnection;
}
@Override
public PlatformTransactionManager getTransactionManager() {
PlatformTransactionManager answer = super.getTransactionManager();
if (isTransacted() && answer == null) {
// lets auto-default the transaction manager if its not specified
answer = createTransactionManager();
setTransactionManager(answer);
answer = getTransactionManager();
}
return answer;
}
/**
* Factory method to create a default transaction manager if one is not specified
*/
protected PlatformTransactionManager createTransactionManager() {
JmsTransactionManager answer = new JmsTransactionManager(getConnectionFactory());
answer.afterPropertiesSet();
return answer;
}
@Override
protected ConnectionFactory createConnectionFactory() {
ActiveMQConnectionFactory answer = new ActiveMQConnectionFactory();
if (userName != null) {
answer.setUserName(userName);
}
if (password != null) {
answer.setPassword(password);
}
if (answer.getBeanName() == null) {
answer.setBeanName("Camel");
}
answer.setBrokerURL(getBrokerURL());
if (isUseSingleConnection()) {
return new SingleConnectionFactory(answer);
}
else if (isUsePooledConnection()) {
return createPooledConnectionFactory(answer);
}
else {
return answer;
}
}
protected ConnectionFactory createPooledConnectionFactory(ActiveMQConnectionFactory connectionFactory) {
// lets not use classes directly to avoid a runtime dependency on commons-pool
// for folks not using this option
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 RuntimeException("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) {
try {
return loader.loadClass(name);
}
catch (ClassNotFoundException e1) {
throw e1;
}
}
}
return null;
}
}