JMS connection pooling with IBM MQ Client - jms

Question

We are using MQIPT 9.2 between our IBM MQ 9.x server and IBM MQ clients. We're also using the IBM MQ client jar in Java to connect to the queue manager to push and receive messages which is working fine. However connection creation is taking time and every time it will take time if we create connection just in time.
How we can implement JMS connection pooling for IBM MQ?
The following depicts our connectivity:
[][1
Is there any standard way so that we can implement connection pooling?
Used Code below
System.out.println("<<<<<<<<<Starting test for push messages>>>>>>>>>>");
try {
// Create a keystore object for the truststore
KeyStore trustStore = KeyStore.getInstance("JKS");
char[] keyPassphrase = "*******".toCharArray();
trustStore.load(new FileInputStream(
"JKS File path"),
keyPassphrase);
TrustManagerFactory trustManagerFactory = TrustManagerFactory
.getInstance(TrustManagerFactory.getDefaultAlgorithm());
trustManagerFactory.init(trustStore);
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, trustManagerFactory.getTrustManagers(), null);
SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
System.out.println("SSL certificates loaded in message sending");
// Create default MQ connection factory
MQQueueConnectionFactory factory = new MQQueueConnectionFactory();
factory.setTransportType(WMQConstants.WMQ_CM_CLIENT);
factory.setQueueManager(QMGRNAME);
factory.setHostName(HOSTNAME);
factory.setChannel(CHANNEL);
factory.setPort(1414);
factory.setSSLFipsRequired(false);
factory.setSSLSocketFactory(sslSocketFactory);
factory.setClientReconnectTimeout(100);
factory.setStringProperty(WMQConstants.USERID, user);
factory.setStringProperty(WMQConstants.PASSWORD, password);
factory.setBooleanProperty(WMQConstants.USER_AUTHENTICATION_MQCSP, true);
factory.setStringProperty(WMQConstants.WMQ_SSL_CIPHER_SUITE, "cipher suite");
mqConnection = (MQQueueConnection) factory.createQueueConnection();
MQQueueSession session = (MQQueueSession) mqConnection.createQueueSession(false,
Session.AUTO_ACKNOWLEDGE);
// Start the connection
System.out.println("Connection starting while sending message");
mqConnection.start();
System.out.println("Connection started while sending message");
for (int i = 0; i <50; i++) {
System.out.println("Preparing message before sending");
long uniqueNumber = System.currentTimeMillis() % 1000;
JMSTextMessage message = (JMSTextMessage) session
.createTextMessage("SimplePTP - msg" + uniqueNumber);
System.out.println("message prepared while sending , text: " + message.getText());
Destination destination = session.createQueue(destinationName);
MQMessageProducer producer = (MQMessageProducer) session.createProducer(destination);
// And, send the message
producer.send(message);
System.out.println("Sent message****************:\n" + message);
}
/*
* if (connection != null) { System.out.
* println("*************connection closing after message sent********************"
* ); connection.close(); System.out.
* println("*************connection closed after message sent********************"
* ); }
*/
System.out.println("<<<<<<<<<<Test ended>>>>>>>>>>>>");
} catch (JMSException j) {
j.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
System.out.println("finally block after message sent************ ");
if (mqConnection != null) {
try {
mqConnection.close();
System.out.println("connection closed after message sent in finally block\n");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
System.out.println("<<<<<<<<<<Test ended from finally >>>>>>>>>>>>");
}
When using the above code connection creation takes time and it's creating and closing a connection for each messsage. This is a bad practice so I created a list and added connection into it which works well. However, I want to use a proper connection pool instead.

Answer 1

You can use:
<bean class="org.apache.activemq.jms.pool.PooledConnectionFactory"
id="source.pooledConnectionFactory" primary="true">
<property name="maxConnections" value="1"/>
<property name="idleTimeout" value="0"/>
<property name="connectionFactory" ref="factory"/>
</bean>
(sorry for the XML when you posted Java DSL, but you get the idea). Basically, wrap your connection factory with the ActiveMQ JMS pooled connection factory.
Alternatively, you can use:
<dependency>
<groupId>org.messaginghub</groupId>
<artifactId>pooled-jms</artifactId>
<version>1.1.0</version>
</dependency>
JmsPoolConnectionFactory pooledCF = new JmsPoolConnectionFactory();
pooledCF.setConnectionFactory(connectionFactory());
pooledCF.setMaxConnections(1);
The org.messaginghub project is a branch of the ActiveMQ code and has no ActiveMQ dependencies.