JMS JMSCC3032 exception - jms

I use IBM MQ. I upgraded the com.ibm.mq jar in my application from 7.5 to 9.1.1.0 as:
<groupId>com.ibm.mq</groupId>
<artifactId>com.ibm.mq.allclient</artifactId>
<version>9.1.1.0</version>
My consumer that is receiving messages from topic started to get error JMSCC0111.
As I read this is new behavior in the JMS libraries above version 8.0 where by default a JMS ID can not be reused.
As a solution I set clientId on connection as below. I'm getting connection from ConnectionFactory.
public Connection getConnectionWithUuid() throws JMSException {
Connection connection = connFactory.createConnection();
String uid = UUID.randomUUID().toString();
connection.setClientID(uid);
connection.start();
return connection;
}
Now I started to get exception:
JMSCC3032: Resetting the client ID is not allowed.
Connection jmsConnection = null;
Session jmsSession = null;
MessageConsumer consumer = null;
MessageProducer producer = null;
try {
jmsConnection = QueueManager.getInstance().getConnectionWithUuid();
jmsSession = jmsConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination responseTopic = QueueManager.getInstance()
.getDestination(this.parameters.getResponseTopicName());
Destination outGoingQueue = QueueManager.getInstance()
.getDestination(this.parameters.getOutGoingQueueName());
consumer = jmsSession.createConsumer(responseTopic);
producer = jmsSession.createProducer(outGoingQueue);
TextMessage requestMessage = jmsSession.createTextMessage(request);
requestMessage.setJMSCorrelationID(parameters.getSessionId());
producer.send(requestMessage);
logMessage("OutGoing Message:\n", requestMessage);
String response = null;
long begin = System.currentTimeMillis();
while (response == null && System.currentTimeMillis() - begin < protocolTimeoutSecs * 1000) {
Message responseMessage = consumer.receive(protocolTimeoutSecs * 1000);
On the last line (consumer.receive) it throws JMSCC3032.

Related

Websphere JMS queue connection issue - ConfigURL property file is not set

Facing the below exception when try to push msg into jms queue in Wrbsphere server.
Please let me know if any help can get on this.
Exception:
JSAS1480I: **Security is not enabled because the ConfigURL property file is not set.**
javax.naming.NamingException: Error getting WsnNameService properties [Root exception is org.omg.CORBA.TRANSIENT: initial and forwarded IOR inaccessible vmcid: 0x4942f000 minor code: 3591 completed: No]
My code:
private void putmsg() throws NamingException, JMSException, IOException {
Context namingContext = null;
final Properties prop = new Properties();
prop.put(Context.INITIAL_CONTEXT_FACTORY, "com.ibm.websphere.naming.WsnInitialContextFactory");
prop.put(Context.PROVIDER_URL, "iiop://localhost:2809");
prop.put(Context.SECURITY_PRINCIPAL, "admin");
prop.put(Context.SECURITY_CREDENTIALS, "admin");
prop.put("connection.factory", "jms/t24ConnectionFactory");
namingContext = new InitialContext(prop);
ConnectionFactory connectionFactory =
(ConnectionFactory) namingContext.lookup("jms/t24ConnectionFactory");
Destination queue = (Destination) namingContext.lookup("jms/t24OFSQueue");
Connection connection = connectionFactory.createConnection();
Session session = connection.createSession();
String input = FileUtils.readFileToString(new File("C:\\inflow\\ResponseOut1.xml"));
MessageProducer producer = session.createProducer(queue);
TextMessage txtMsg = session.createTextMessage(input);
((MessageProducer) producer).send(txtMsg);
connection.close();
}
I think i have missing some configuration related to websphere.

Detect reconnect in an IBM MQ client application that uses auto-reconnect

I am using IBM MQ Classes for JMS (IBM MQ Version 8.0.0.4) with auto-reconnection configured. According to the docs, reconnection happens implicitly. I would like to issue a simple log statement in the event of reconnection. For that reason, I need to somehow get informed, when that happens.
In the IBM docs on page Application Recovery I stumbled over section "Detecting failover" where it says:
Reconnection aware: Register an MQCBT_EVENT_HANDLER event handler with
the queue manager. The event handler is posted with MQRC_RECONNECTING
when the client starts to try to reconnect to the server, and
MQRC_RECONNECTED after a successful reconnection. You can then run a
routine to reestablish a predictable state so that the client
application is able to continue processing.
Unfortunately, I did not find a code example for Java/JMS that demonstrates how and where to register such an event handler. I don't know if that is even supported in my case. Could anyone provide me to the right direction or even provide a code sample? Thank you very much.
Question Update from February 5, 2020:
Added the following code example created by myself, after having received Sashi's initial answer from January 27, 2020.
public static void main(String[] args) {
Connection connection = null;
Session session = null;
Object destination = null;
MessageProducer producer = null;
try {
JmsFactoryFactory jmsFactoryFactory = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER);
JmsConnectionFactory cf = jmsFactoryFactory.createConnectionFactory();
cf.setStringProperty(WMQConstants.WMQ_HOST_NAME, HOST);
cf.setIntProperty(WMQConstants.WMQ_PORT, PORT);
cf.setStringProperty(WMQConstants.WMQ_CHANNEL, CHANNEL);
cf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT);
cf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, QM_NAME);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_OPTIONS, WMQConstants.WMQ_CLIENT_RECONNECT);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, RECONNECT_TIMEOUT);
connection = cf.createConnection();
connection.setExceptionListener(new MQExceptionListener());
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
destination = session.createQueue(QUEUE);
producer = session.createProducer((Destination)destination);
connection.start();
} catch (JMSException ex) {
LOGGER.error(ex.toString());
}
}
public class MQExceptionListener implements ExceptionListener {
public void onException(JMSException e) {
System.out.println(e);
if(e.getLinkedException() != null)
System.out.println(e.getLinkedException());
}
}
This is what I get in the logs:
ERROR [Main.main:57] (main) com.ibm.msg.client.jms.DetailedIllegalStateException: JMSWMQ0018: Failed to connect to queue manager '<hostname>' with connection mode 'Client' and host name '<hostname>(<port>)'.
Check the queue manager is started and if running in client mode, check there is a listener running. Please see the linked exception for more information.
ERROR [Main.main:61] (main) Inner exceptions:
ERROR [Main.main:65] (main) com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2538' ('MQRC_HOST_NOT_AVAILABLE').
ERROR [Main.main:65] (main) com.ibm.mq.jmqi.JmqiException: CC=2;RC=2538;AMQ9204: Connection to host '<hostname>(<port>)' rejected. [1=com.ibm.mq.jmqi.JmqiException[CC=2;RC=2538;AMQ9204: Connection to host '<hostname>/<ip>:<port>' rejected. [1=java.net.ConnectException[Connection refused: connect],3=<hostname>/<ip>:<port>,4=TCP,5=Socket.connect]],3=<hostname>(<port>),5=RemoteTCPConnection.bindAndConnectSocket]
ERROR [Main.main:65] (main) com.ibm.mq.jmqi.JmqiException: CC=2;RC=2538;AMQ9204: Connection to host '<hostname>/<ip>:<port>' rejected. [1=java.net.ConnectException[Connection refused: connect],3=<hostname>/<ip>:<port>,4=TCP,5=Socket.connect]
ERROR [Main.main:65] (main) java.net.ConnectException: Connection refused: connect
Question Update from February 11, 2020:
I've added this additions based on feedback received by Sashi on February 5, 2020.
I have tried to build a minimal application that connects to an IBM MQ instance. Here's the code:
Application.java
public class Application {
private static final Logger LOGGER = LoggerFactory.getLogger(Application.class);
public static void main(String[] args) {
new Application().run();
}
private void run() {
MQWriter writer = new MQWriter();
int i = 1;
while (true) {
String message = "Hello Testing " + i;
LOGGER.info("Sending message {} to MQ server...", message);
writer.write(message);
i++;
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
MQConnectionDetails.java
public class MQConnectionDetails {
public static final String HOST = "XXX.XXX.XXX.XXX";
public static final int PORT = 1414;
public static final String QM_NAME = "QM1";
public static final String CHANNEL = "DEV.APP.SVRCONN";
public static final String QUEUE = "DEV.QUEUE.1";
public static final int RECONNECT_TIMEOUT = 60; // 1 minute
}
MQWriter.java
public class MQWriter {
private static final Logger LOGGER = LoggerFactory.getLogger(MQWriter.class);
private Connection connection = null;
private Session session = null;
private Object destination = null;
private MessageProducer producer = null;
public MQWriter() {
try {
JmsFactoryFactory jff = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER);
JmsConnectionFactory jcf = jff.createConnectionFactory();
jcf.setStringProperty(WMQConstants.WMQ_HOST_NAME, MQConnectionDetails.HOST);
jcf.setIntProperty(WMQConstants.WMQ_PORT, MQConnectionDetails.PORT);
jcf.setStringProperty(WMQConstants.WMQ_CHANNEL, MQConnectionDetails.CHANNEL);
jcf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT);
jcf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, MQConnectionDetails.QM_NAME);
jcf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_OPTIONS, WMQConstants.WMQ_CLIENT_RECONNECT);
jcf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, MQConnectionDetails.RECONNECT_TIMEOUT);
LOGGER.info("Initializing connection to write queue {} on {}:{}...",
MQConnectionDetails.QUEUE,
MQConnectionDetails.HOST,
MQConnectionDetails.PORT);
connection = jcf.createConnection();
connection.setExceptionListener(new MQExceptionListener());
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
destination = session.createQueue(MQConnectionDetails.QUEUE);
producer = session.createProducer((Destination)destination);
connection.start();
} catch (JMSException ex) {
LOGGER.error("Error initializing connection to write queue", ex);
}
}
public void write(String message) {
try {
TextMessage textMessage = session.createTextMessage(message);
producer.send(textMessage);
} catch (Exception ex) {
LOGGER.error("Error sending message to write queue", ex);
}
}
}
MQExceptionListener.java
public class MQExceptionListener implements ExceptionListener {
private static final Logger LOGGER = LoggerFactory.getLogger(MQExceptionListener.class);
public void onException(JMSException ex) {
LOGGER.error("=====");
LOGGER.error(ex.toString());
if (ex.getLinkedException() != null) {
LOGGER.error(ex.getLinkedException().toString());
}
LOGGER.error("=====");
}
}
The test scenario I ran is like this:
Make sure, IBM MQ is available on TCP port 1414 (IBM MQ Docker container running on Amazon EC2).
Run the application above (Application.java) and make sure it sends messages to the queue.
Change firewall config on Amazon EC2 security groups by changing port from 1414 to 1415, which makes IBM MQ unavailable to the client.
This is what I've observed:
Only after 90 seconds of inactivity, the client started throwing exceptions. I do not understand, because my RECONNECT_TIMEOUT was set to 60 seconds, so 30 seconds off here.
MQExceptionListener is invoked only once (the first time).
There are no reason codes 2544(MQRC_RECONNECTING) only 2009(MQRC_CONNECTION_BROKEN) is present. Why is that?
Here is a summary of the exceptions that got thrown:
Exceptions on console:
2020-02-11 09:50:16,155 INFO [Application.run:21] (main) Sending message Hello Testing 13 to MQ server...
2020-02-11 09:50:17,285 INFO [Application.run:21] (main) Sending message Hello Testing 14 to MQ server...
2020-02-11 09:50:18,413 INFO [Application.run:21] (main) Sending message Hello Testing 15 to MQ server...
2020-02-11 09:50:19,555 INFO [Application.run:21] (main) Sending message Hello Testing 16 to MQ server...
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:14] (JMSCCThreadPoolWorker-6) =====
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:15] (JMSCCThreadPoolWorker-6) com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ1107: A problem with this connection has occurred.
An error has occurred with the IBM MQ JMS connection.
Use the linked exception to determine the cause of this error.
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:17] (JMSCCThreadPoolWorker-6) com.ibm.mq.MQException: MQ delivered an asynchronous event with completion code '2', and reason '2009'.
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:19] (JMSCCThreadPoolWorker-6) =====
2020-02-11 09:51:45,967 ERROR [MQWriter.write:52] (main) Error sending message to write queue
com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ2007: Failed to send a message to destination 'DEV.QUEUE.1'.
JMS attempted to perform an MQPUT or MQPUT1; however IBM MQ reported an error.
Use the linked exception to determine the cause of this error.
at com.ibm.msg.client.wmq.common.internal.Reason.reasonToException(Reason.java:595)
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:215)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1288)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1245)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.access$800(WMQMessageProducer.java:76)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$SpiIdentifiedProducerShadow.sendInternal(WMQMessageProducer.java:906)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$ProducerShadow.send(WMQMessageProducer.java:566)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.send(WMQMessageProducer.java:1428)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendMessage(JmsMessageProducerImpl.java:855)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.synchronousSendInternal(JmsMessageProducerImpl.java:2055)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendInternal(JmsMessageProducerImpl.java:1993)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.send(JmsMessageProducerImpl.java:1486)
at com.ibm.mq.jms.MQMessageProducer.send(MQMessageProducer.java:293)
at org.example.MQWriter.write(MQWriter.java:50)
at org.example.Application.run(Application.java:22)
at org.example.Application.main(Application.java:13)
Caused by: com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2009' ('MQRC_CONNECTION_BROKEN').
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:203)
... 14 more
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2009
at com.ibm.mq.jmqi.remote.api.RemoteHconn$ReconnectionState.recordFailure(RemoteHconn.java:4931)
at com.ibm.mq.jmqi.remote.api.RemoteHconn.setReconnectionFailureInner(RemoteHconn.java:2650)
at com.ibm.mq.jmqi.remote.api.RemoteParentHconn.setReconnectionFailure(RemoteParentHconn.java:152)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.bestHconn(RemoteReconnectThread.java:265)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.run(RemoteReconnectThread.java:115)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.runTask(WorkQueueItem.java:319)
at com.ibm.msg.client.commonservices.workqueue.SimpleWorkQueueItem.runItem(SimpleWorkQueueItem.java:99)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.run(WorkQueueItem.java:343)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueManager.runWorkQueueItem(WorkQueueManager.java:312)
at com.ibm.msg.client.commonservices.j2se.workqueue.WorkQueueManagerImplementation$ThreadPoolWorker.run(WorkQueueManagerImplementation.java:1227)
2020-02-11 09:51:46,969 INFO [Application.run:21] (main) Sending message Hello Testing 17 to MQ server...
2020-02-11 09:51:46,972 ERROR [MQWriter.write:52] (main) Error sending message to write queue
com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ2007: Failed to send a message to destination 'DEV.QUEUE.1'.
JMS attempted to perform an MQPUT or MQPUT1; however IBM MQ reported an error.
Use the linked exception to determine the cause of this error.
at com.ibm.msg.client.wmq.common.internal.Reason.reasonToException(Reason.java:595)
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:215)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1288)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1245)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.access$800(WMQMessageProducer.java:76)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$SpiIdentifiedProducerShadow.sendInternal(WMQMessageProducer.java:906)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$ProducerShadow.send(WMQMessageProducer.java:566)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.send(WMQMessageProducer.java:1428)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendMessage(JmsMessageProducerImpl.java:855)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.synchronousSendInternal(JmsMessageProducerImpl.java:2055)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendInternal(JmsMessageProducerImpl.java:1993)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.send(JmsMessageProducerImpl.java:1486)
at com.ibm.mq.jms.MQMessageProducer.send(MQMessageProducer.java:293)
at org.example.MQWriter.write(MQWriter.java:50)
at org.example.Application.run(Application.java:22)
at org.example.Application.main(Application.java:13)
Caused by: com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2009' ('MQRC_CONNECTION_BROKEN').
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:203)
... 14 more
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2009
at com.ibm.mq.jmqi.remote.api.RemoteHconn$ReconnectionState.recordFailure(RemoteHconn.java:4931)
at com.ibm.mq.jmqi.remote.api.RemoteHconn.setReconnectionFailureInner(RemoteHconn.java:2650)
at com.ibm.mq.jmqi.remote.api.RemoteParentHconn.setReconnectionFailure(RemoteParentHconn.java:152)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.bestHconn(RemoteReconnectThread.java:265)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.run(RemoteReconnectThread.java:115)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.runTask(WorkQueueItem.java:319)
at com.ibm.msg.client.commonservices.workqueue.SimpleWorkQueueItem.runItem(SimpleWorkQueueItem.java:99)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.run(WorkQueueItem.java:343)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueManager.runWorkQueueItem(WorkQueueManager.java:312)
at com.ibm.msg.client.commonservices.j2se.workqueue.WorkQueueManagerImplementation$ThreadPoolWorker.run(WorkQueueManagerImplementation.java:1227)
Question Update from February 12, 2020
Added this sample and findings based on JoshMc's answer from February 11, 2020. My comments on this sample:
I am now using the MQ* classes and set reconnect options as suggested.
Reconnect is still not happening though
MQWriter2.java
public class MQWriter2 {
private static final Logger LOGGER = LoggerFactory.getLogger(MQWriter2.class);
private Connection connection = null;
private Session session = null;
private Queue destination = null;
private MessageProducer producer = null;
public MQWriter2() {
try {
MQConnectionFactory factory = new MQConnectionFactory();
factory.setTransportType(WMQConstants.WMQ_CM_CLIENT);
factory.setConnectionNameList("XXX.XXX.XXX.XXX(1414)");
factory.setQueueManager(MQConnectionDetails.QM_NAME);
factory.setChannel(MQConnectionDetails.CHANNEL);
factory.setClientReconnectOptions(WMQConstants.WMQ_CLIENT_RECONNECT);
factory.setClientReconnectTimeout(MQConnectionDetails.RECONNECT_TIMEOUT);
LOGGER.info("Initializing connection to write queue {} on {}:{}...",
MQConnectionDetails.QUEUE,
MQConnectionDetails.HOST,
MQConnectionDetails.PORT);
connection = factory.createConnection();
connection.setExceptionListener(new MQExceptionListener());
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
destination = session.createQueue(MQConnectionDetails.QUEUE);
producer = session.createProducer(destination);
connection.start();
} catch (JMSException ex) {
LOGGER.error("Error initializing connection to write queue", ex);
}
}
public void write(String message) {
try {
TextMessage textMessage = session.createTextMessage(message);
producer.send(textMessage);
} catch (Exception ex) {
LOGGER.error("Error sending message to write queue", ex);
}
}
}
Console Output
2020-02-12 08:39:11,628 INFO [MQWriter2.<init>:29] (main) Initializing connection to write queue DEV.QUEUE.1 on 54.161.121.207:1414...
2020-02-12 08:39:14,552 INFO [Application.run:19] (main) Sending message Hello Testing 1 to MQ server...
2020-02-12 08:39:15,710 INFO [Application.run:19] (main) Sending message Hello Testing 2 to MQ server...
2020-02-12 08:39:16,841 INFO [Application.run:19] (main) Sending message Hello Testing 3 to MQ server...
...
2020-02-12 08:39:41,973 INFO [Application.run:19] (main) Sending message Hello Testing 25 to MQ server...
2020-02-12 08:41:27,314 ERROR [MQExceptionListener.onException:14] (JMSCCThreadPoolWorker-10) =====
2020-02-12 08:41:27,314 ERROR [MQExceptionListener.onException:15] (JMSCCThreadPoolWorker-10) com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ1107: A problem with this connection has occurred.
An error has occurred with the IBM MQ JMS connection.
Use the linked exception to determine the cause of this error.
2020-02-12 08:41:27,314 ERROR [MQWriter2.write:49] (main) Error sending message to write queue
com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ2007: Failed to send a message to destination 'DEV.QUEUE.1'.
JMS attempted to perform an MQPUT or MQPUT1; however IBM MQ reported an error.
Use the linked exception to determine the cause of this error.
at com.ibm.msg.client.wmq.common.internal.Reason.reasonToException(Reason.java:595)
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:215)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1288)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1245)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.access$800(WMQMessageProducer.java:76)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$SpiIdentifiedProducerShadow.sendInternal(WMQMessageProducer.java:906)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$ProducerShadow.send(WMQMessageProducer.java:566)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.send(WMQMessageProducer.java:1428)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendMessage(JmsMessageProducerImpl.java:855)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.synchronousSendInternal(JmsMessageProducerImpl.java:2055)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendInternal(JmsMessageProducerImpl.java:1993)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.send(JmsMessageProducerImpl.java:1486)
at com.ibm.mq.jms.MQMessageProducer.send(MQMessageProducer.java:293)
at org.example.MQWriter2.write(MQWriter2.java:47)
at org.example.Application.run(Application.java:20)
at org.example.Application.main(Application.java:11)
Caused by: com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2009' ('MQRC_CONNECTION_BROKEN').
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:203)
... 14 more
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2009
at com.ibm.mq.jmqi.remote.api.RemoteHconn$ReconnectionState.recordFailure(RemoteHconn.java:4931)
at com.ibm.mq.jmqi.remote.api.RemoteHconn.setReconnectionFailureInner(RemoteHconn.java:2650)
at com.ibm.mq.jmqi.remote.api.RemoteParentHconn.setReconnectionFailure(RemoteParentHconn.java:152)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.bestHconn(RemoteReconnectThread.java:265)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.run(RemoteReconnectThread.java:115)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.runTask(WorkQueueItem.java:319)
at com.ibm.msg.client.commonservices.workqueue.SimpleWorkQueueItem.runItem(SimpleWorkQueueItem.java:99)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.run(WorkQueueItem.java:343)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueManager.runWorkQueueItem(WorkQueueManager.java:312)
at com.ibm.msg.client.commonservices.j2se.workqueue.WorkQueueManagerImplementation$ThreadPoolWorker.run(WorkQueueManagerImplementation.java:1227)
You can set an ExceptionListener on connection object after creating a connection. The onException method of the ExceptionListener gets invoked when reconnection attempts are made. Here is an example:
ExceptionListener exceptionListener = new ExceptionListener(){
#Override
public void onException(JMSException e) {
System.out.println(e);
if(e.getLinkedException() != null)
System.out.println(e.getLinkedException());
}
};
MQQueueConnection connection = (MQQueueConnection) cf.createQueueConnection();
connection.setExceptionListener(exceptionListener);
I faced the same issue as the topic starter. After spending hours sifting information available in the internet, speaking to colleagues and pulling hair in an attempt to make the reconnection work, I gave up and made a decision to work around the problem by emulating that incomprehensible reconnection functionality. I hope it will help other people struggling with IBM MQ. I wrote the class that, basically, does 2 things:
Repeatedly tries to connect to IBM MQ with an increasing interval between attempts.
After connecting, sets an error handler that is fired by IBM MQ when something happens to the connection (using the same logic for reconnection).
First, here's the class itself:
package com.raiks.mqclient;
import javax.jms.Destination;
import javax.jms.JMSConsumer;
import javax.jms.JMSContext;
import javax.jms.JMSException;
import com.ibm.msg.client.jms.JmsConnectionFactory;
import com.ibm.msg.client.wmq.WMQConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.raiks.mqclient.IbmMqMessageListener;
/**
* This class implements the reconnection logic for JMS brokers that don't support it
* In particular, it does it for IBM MQ with its incomprehensible reconnection algorithm
* It's expected that each connection manager receives a separate connection factory
* and a message listener - it's not guaranteed for those to be thread safe
*/
public final class IbmMqJmsConnectionManager {
private static final Logger LOGGER = LoggerFactory.getLogger(IbmMqJmsConnectionManager.class);
private static final int INITIAL_RECONNECTION_DELAY_MS = 6000;
private static final int MAX_RECONNECTION_DELAY_MS = 60000;
private static final String QUEUE_PREIX = "queue:///";
private final String connectorName;
private final JmsConnectionFactory connectionFactory;
private final String queueName;
private final IbmMqMessageListener messageListener;
private final int initialReconnectionDelayMs;
private final int maxReconnectionDelayMs;
public IbmMqJmsConnectionManager(
String connectorName,
JmsConnectionFactory connectionFactory,
String queueName,
IbmMqMessageListener messageListener,
int initialReconnectionDelayMs,
int maxReconnectionDelayMs
) {
this.connectorName = connectorName;
this.connectionFactory = connectionFactory;
this.queueName = queueName;
this.messageListener = messageListener;
this.initialReconnectionDelayMs = initialReconnectionDelayMs;
this.maxReconnectionDelayMs = maxReconnectionDelayMs;
}
/**
* Attempts to connect to a JMS broker and makes continuous retries with an increasing interval if fails
* When the maximum interval is reached, issues an error and keeps on trying
* Sets the exception listener (a callback) in the created JMSContext which calls this method when the
* connection with the broker goes down due to network issue or intentional connection termination
*/
public void connectToBrokerWithRetries() {
String connectionDetails = formatConnectionDetails();
LOGGER.info("Attempting to connect to JMS broker '{}'. Connection details = {}", connectorName, connectionDetails);
JMSContext context = null;
int sleepingTimeMs = INITIAL_RECONNECTION_DELAY_MS;
int accumulatedSleepingTimeMs = 0;
// Try to reconnect until we succeed. IMPORTANT! This is a blocking loop that never ends so it must be run in a separate thread
while (context == null) {
try {
context = connectionFactory.createContext(JMSContext.AUTO_ACKNOWLEDGE);
LOGGER.info("Successfully connected to the JMS broker '{}'. Connection details = {}", connectorName, connectionDetails);
boolean hadUnsuccessfulConnectionAttempts = accumulatedSleepingTimeMs > 0;
if (hadUnsuccessfulConnectionAttempts) {
LOGGER.warn(
"Before this successful attempt, I spent {} ms repeatedly trying to connect to '{}'. Please check the broker's health. Connection details = {}",
accumulatedSleepingTimeMs, connectorName, connectionDetails
);
}
Destination destination = context.createQueue(QUEUE_PREIX + queueName);
JMSConsumer jmsConsumer = context.createConsumer(destination);
jmsConsumer.setMessageListener(messageListener);
LOGGER.info("Successfully connected to the queue '{}' at '{}'. Connection details = {}", queueName, connectorName, connectionDetails);
// Sets a callback that will be invoked when something happens with a connection to a broker
context.setExceptionListener(
jmsException -> {
LOGGER.warn("Something bad happened to JMS broker connection to '{}'. I will try to reconnect. Connection details = {}", connectorName, connectionDetails);
connectToBrokerWithRetries();
}
);
} catch (Exception e) {
LOGGER.warn(
"Failed to create a JMS context for '{}'. I will wait for {} ms and then make a reconnection attempt. Connection details = {}",
connectorName, sleepingTimeMs, connectionDetails, e
);
context = null;
try {
Thread.sleep(sleepingTimeMs);
accumulatedSleepingTimeMs += sleepingTimeMs;
int doubledSleepingTime = sleepingTimeMs * 2;
// We double the sleeping time on each subsequent attempt until we hit the limit
// Then we just keep on reconnecting forever using the limit value
boolean nextReconnectionDelayWillExceedMaxDelay = doubledSleepingTime >= MAX_RECONNECTION_DELAY_MS;
if (nextReconnectionDelayWillExceedMaxDelay) {
sleepingTimeMs = MAX_RECONNECTION_DELAY_MS;
LOGGER.error(
"Repeatedly failed to create a JMS context for {} ms. I will keep on trying every {} ms but please check the broker availability. Connection details = {}",
accumulatedSleepingTimeMs, sleepingTimeMs, connectionDetails
);
} else {
sleepingTimeMs = doubledSleepingTime;
}
} catch (InterruptedException ex) {
throw new RuntimeException(ex);
}
}
}
}
private String formatConnectionDetails() {
String connectionDetails = "[]";
try {
connectionDetails = String.format(
"[ host = %s, port = %d, queueManager = %s, channel = %s, user = %s ]",
connectionFactory.getStringProperty(WMQConstants.WMQ_HOST_NAME),
connectionFactory.getIntProperty(WMQConstants.WMQ_PORT),
connectionFactory.getStringProperty(WMQConstants.WMQ_QUEUE_MANAGER),
connectionFactory.getStringProperty(WMQConstants.WMQ_CHANNEL),
connectionFactory.getStringProperty(WMQConstants.USERID)
);
} catch (Exception e) {
LOGGER.warn("Failed to get the connection details. This is not critical, but the details will be unavailable");
}
return connectionDetails;
}
}
And here's how you use it:
LOGGER.info("Starting the initial connection thread");
Thread cftInitialConnectionThread = new Thread(cftConnectionManager::connectToBrokerWithRetries);
cftInitialConnectionThread.start();
Check this piece of Code, for me is working with IBM WMQ 9.2.3, using a 3 node IBM WMQ Multi Instance with Pacemaker on CentOS 8.
package com.ibm.mq.samples.jms;
import javax.jms.Destination;
import javax.jms.JMSConsumer;
import javax.jms.JMSContext;
import javax.jms.JMSException;
import javax.jms.JMSProducer;
import javax.jms.TextMessage;
import com.ibm.msg.client.jms.JmsConnectionFactory;
import com.ibm.msg.client.jms.JmsFactoryFactory;
import com.ibm.msg.client.wmq.WMQConstants;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class JmsPutGet {
// System exit status value (assume unset value to be 1)
private static int status = 1;
// Create variables for the connection to MQ
private static final String HOST = "192.168.49.140"; // Host name or IP address
private static final int PORT = 10200; // Listener port for your queue manager
private static final String CHANNEL = "CHANNEL1"; // Channel name
private static final String QMGR = "HAQM1"; // Queue manager name
private static final String APP_USER = ""; // User name that application uses to connect to MQ
private static final String APP_PASSWORD = ""; // Password that the application uses to connect to MQ
private static final String QUEUE_NAME = "SOURCE"; // Queue that the application uses to put and get messages to and from
private static final int RECONNECT_TIMEOUT = 60; // 1 minute
private static JMSContext context = null;
private static Destination destination = null;
public static void main(String[] args) {
// Variables
JMSProducer producer = null;
JMSConsumer consumer = null;
LocalDateTime now = null;
try {
setupResources();
long uniqueNumber = System.currentTimeMillis() % 1000;
TextMessage message = context.createTextMessage("Your lucky number today is " + uniqueNumber);
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("uuuu/MM/dd HH:mm:ss");
for(int i=0; i>=0; i++){
producer = context.createProducer();
producer.send(destination, message);
//System.out.println("Sent message:\n " + i + " " + message);
System.out.println("\nMensaje enviado:\n " + i );
now = LocalDateTime.now();
System.out.println(dtf.format(now));
consumer = context.createConsumer(destination); // autoclosable
String receivedMessage = consumer.receiveBody(String.class, 15000); // in ms or 15 seconds
//System.out.println("\nReceived message:\n " + i + " " + receivedMessage);
System.out.println("\nMensaje recibido:\n " + i );
now = LocalDateTime.now();
System.out.println(dtf.format(now));
Thread.sleep(1000);
}
context.close();
recordSuccess();
} catch (Exception ex) {
recordFailure(ex);
System.out.println("DETECTING ERROR... RECONNECTING");
setupResources();
}
} // end main()
private static void setupResources() {
boolean connected = false;
while (!connected) {
try {
// Create a connection factory
JmsFactoryFactory ff = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER);
JmsConnectionFactory cf = ff.createConnectionFactory();
// Set the properties
cf.setStringProperty(WMQConstants.WMQ_HOST_NAME, HOST);
cf.setIntProperty(WMQConstants.WMQ_PORT, PORT);
//cf.setStringProperty(WMQConstants.WMQ_CONNECTION_NAME_LIST, "192.168.49.140(10200),192.168.49.131(10200),192.168.49.132(10200)");
cf.setStringProperty(WMQConstants.WMQ_CHANNEL, CHANNEL);
cf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT);
cf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, QMGR);
cf.setStringProperty(WMQConstants.WMQ_APPLICATIONNAME, "JmsPutGet (JMS)");
cf.setBooleanProperty(WMQConstants.USER_AUTHENTICATION_MQCSP, true);
cf.setStringProperty(WMQConstants.USERID, APP_USER);
cf.setStringProperty(WMQConstants.PASSWORD, APP_PASSWORD);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, RECONNECT_TIMEOUT);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_OPTIONS, WMQConstants.WMQ_CLIENT_RECONNECT);
//cf.setStringProperty(WMQConstants.WMQ_SSL_CIPHER_SUITE, "*TLS12");
// Create JMS objects
context = cf.createContext();
destination = context.createQueue("queue:///" + QUEUE_NAME);
// no exception? then we connected ok
connected = true;
System.out.println("CONNECTED");
}
catch (JMSException je) {
// sleep and then have another attempt
System.out.println("RECONNECTING");
try {Thread.sleep(30*1000);} catch (InterruptedException ie) {}
}
}
}
private static void recordSuccess() {
System.out.println("SUCCESS");
status = 0;
return;
}
private static void recordFailure(Exception ex) {
if (ex != null) {
if (ex instanceof JMSException) {
processJMSException((JMSException) ex);
} else {
System.out.println(ex);
}
}
System.out.println("FAILURE");
status = -1;
return;
}
private static void processJMSException(JMSException jmsex) {
System.out.println(jmsex);
Throwable innerException = jmsex.getLinkedException();
if (innerException != null) {
System.out.println("Inner exception(s):");
}
while (innerException != null) {
System.out.println(innerException);
innerException = innerException.getCause();
}
return;
}
}
I have added a link in github for any reference https://github.com/fintecheando/IBMMQSample
A few points here that may clear things up for you.
The following line sets the amount of time that MQ will attempt to reconnect to the queue manager once it notices the connection is lost.
jcf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, MQConnectionDetails.RECONNECT_TIMEOUT);
How long it takes the client to notice the connection is broken depends on the type of failure, but in the situation you describe it will be based on the HBINT setting of the SVRCONN channel on the queue manager.
A Heart Beat is sent every HBINT seconds when no other normal traffic is passing over the channel. The TIMEOUT of the channel is based on the HBINT, if the HBINT is less than 60 seconds then the TIMEOUT is twice the HBINT, if the HBINT is 60 seconds or larger, the TIMEOUT is the HBINT plus 60 seconds. The TIMEOUT is based on the last time traffic or a heart beat was sent, not when you changed firewall config, although in this case it appears you were sending a message every seconds so this should have been close.
Based on the logs I'm not sure it is picking up the RECONNECT option as I would expect when the reconnect timeout expired that you would get either of these errors instead of MQRC_CONNECTION_BROKEN:
MQRC_RECONNECT_FAILED
MQRC_RECONNECT_TIMED_OUT
In samples I have, I set it this way, maybe try this instead of the way you are currently setting it:
jcf.setClientReconnectOptions(WMQConstants.WMQ_CLIENT_RECONNECT);
jcf.setClientReconnectTimeout(MQConnectionDetails.RECONNECT_TIMEOUT);
Based on what I see I would guess your HBINT is set to 45 seconds on the SVRCONN channel, and the connection is just timing out with MQRC_CONNECTION_BROKEN at 90 seconds and never attempting to reconnect.

JMS Temporary Queue - Replies not returning back to client

I'm trying to move away from Weblogic to JBoss, and as such I'm trying to implement the things I was able to implement on Weblogic on JBoss.
One of those things is our notification system where the client sends a request to an MDB and the MDB sends a reply back to the client.
This was a breeze in Weblogic, but on Jboss, nothing seems to work. I keep getting this error:
javax.jms.InvalidDestinationException: Not an ActiveMQ Artemis Destination:ActiveMQTemporaryQueue[da00b1a2-114d-4be9-930d-926fc20c2fce]
Is there something I need to configure on my Jboss?
EDIT
I realise that I probably didn't phrase the question very well.
What happens is this: I have a client and a server MDB (message driven bean). The client sends a message to a queue and waits for a response from the server. The server picks the message from the queue and sends a response to the client, which the client picks up and displays.
On Jboss, messages from the client go smoothly, and the server picks it up, but as soon as the server MDB tries to send a response to the client, that error is thrown.
My client code (excerpt):
int TIME_OUT = 60000;
//prepare factory
Properties prop = new Properties();
prop.setProperty("java.naming.factory.initial", "org.jboss.naming.remote.client.InitialContextFactory");
prop.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");
prop.setProperty("java.naming.provider.url", "http-remoting://remotehost:8080");
prop.setProperty("java.naming.security.principal", "guest-user")
prop.setProperty("java.naming.security.credentials", "Password#1")
String queueConnectionFactory = "jms/RemoteConnectionFactory";
Context context = new InitialContext(prop);
QueueConnectionFactory qconFactory = (QueueConnectionFactory) context.lookup(queueConnectionFactory);
//prepare queue and sessions
QueueConnection qcon = qconFactory.createQueueConnection(prop.getProperty("java.naming.security.principal"), prop.getProperty("java.naming.security.credentials"));
QueueSession qsession = qcon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
Queue queue = (Queue) context.lookup("jms/TestQueue2");
//create message
NotificationWrapper wrapper = //object initialised with something
ObjectMessage om = qsession.createObjectMessage(wrapper);//NotificationWrapper wrapper
//create producer
MessageProducer producer = qsession.createProducer(queue);
//create temporary queue
TemporaryQueue tempqueue = qsession.createTemporaryQueue();
om.setJMSReplyTo(tempqueue);
//start connection
qcon.start();
//send message and wait for response
producer.send(om);
MessageConsumer consumer = qsession.createConsumer(tempqueue);
Message callback = consumer.receive(TIME_OUT);
//print message from server
if (callback != null) {
System.out.println("Response received from server. Print here...");
//message from server
} else {
System.out.println("No Response received from server. Problems!!!");
}
//close all connections
if (consumer != null) {
consumer.close();
}
if (producer != null) {
producer.close();
}
if (qsession != null) {
qsession.close();
}
if (qcon != null) {
qcon.close();
}
My Server code (excerpt):
#MessageDriven(mappedName = "TestQueue2", activationConfig = {
#ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue"),
#ActivationConfigProperty(propertyName = "destination", propertyValue = "jms/TestQueue2"),
#ActivationConfigProperty(propertyName = "maxSession", propertyValue = "10")
})
public class ServerSide implements MessageListener {
private static final QueueConfigProperties queueConfigProp = QueueConfigProperties.getInstance();
private Context context;
private QueueConnectionFactory qconFactory;
private QueueConnection qcon;
private QueueSession qsession;
private MessageProducer producer;
public ServerSide() {
try {
initialiseQueueFactory("jms/RemoteConnectionFactory");
//initialiseQueueFactory("jms/GreenpoleConnectionFactory");
prepareResponseQueue();
Properties prop = new Properties();
prop.setProperty("java.naming.factory.initial", "org.jboss.naming.remote.client.InitialContextFactory");
prop.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");
prop.setProperty("java.naming.provider.url", "http-remoting://remotehost:8080");
prop.setProperty("java.naming.security.principal", "guest-user")
prop.setProperty("java.naming.security.credentials", "Password#1")
String queueConnectionFactory = "jms/RemoteConnectionFactory";
Context context = new InitialContext(prop);
QueueConnectionFactory qconFactory = (QueueConnectionFactory) context.lookup(queueConnectionFactory);
qcon = qconFactory.createQueueConnection(queueConfigProp.getProperty("java.naming.security.principal"), queueConfigProp.getProperty("java.naming.security.credentials"));
qsession = qcon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
} catch (NamingException | ConfigNotFoundException | IOException | JMSException ex) {
//error log
}
}
#Override
public void onMessage(Message message) {
try {
if (((ObjectMessage) message).getObject() instanceof NotificationWrapper) {
//send response
if (message.getJMSReplyTo() != null) {
logger.info("sending response");
respondToSenderPositive(message);
Response resp = new Response();
resp.setRetn(0);
resp.setDesc("Notification submitted to queue.");
producer = qsession.createProducer(message.getJMSReplyTo());
producer.send(qsession.createObjectMessage(resp));
producer.send(msg_to_send);
}
} else {
//some message printed here
}
} catch (JMSException ex) {
//error logs
} catch (Exception ex) {
//error logs
}
}
}
The issue was to do with the configuration of the destination queue which is a remote queue: the client and server are both running on different JVMs. Remote Queues on Jboss are named differently from those on Weblogic.
The name of a remote queue should be something like this: java:jboss/exported/jms/TestQueue2
Refer to the JBoss documentation for a more detailed explanation on queues: https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.0/html-single/configuring_messaging/index

MQ MessageConsumer does not respond to receive() method

I have a java program I run to write messages to Mid-Tier IBM MQ's to test functionality before attaching our main programs to them. The write method looks like the following below:
private static void sendSingleMessage(ConnectionFactory connectionFactory,
String[] messages, String destination) throws Exception {
Connection connection = null;
try {
connection = connectionFactory.createConnection();
for (String payload : messages) {
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Queue queue = session.createQueue(destination);
MessageProducer producer = session.createProducer(queue);
Message msg = session.createTextMessage(payload);
System.out.println("Sending text '" + payload + "'");
producer.send(msg);
session.close();
System.out.println("Message sent");
}
} finally {
if (connection != null) {
connection.close();
}
}
}
The connectionFactory is setup before this method executes, but within that method I set the MQConncetionFactory properties(host,port,channel,queuemanager, etc...) This send method works and I can see the queue depth increasing on my IBM MQ Explorer when I call it from my main method.
When I run a similar readSingleMessage method, the code gets stuck on the consumer.receive() and never finishes executing. See below:
private static void readSingleMessage(ConnectionFactory connectionFactory,
String[] messages, String destination) throws Exception {
Connection connection = null;
try {
connection = connectionFactory.createConnection();
for (String payload : messages) {
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Queue queue = session.createQueue(destination);
MessageConsumer consumer = session.createConsumer(queue);
System.out.println("Recieving text '" + payload + "'");
consumer.receive();
session.close();
System.out.println("Received message");
}
} finally {
if (connection != null) {
connection.close();
}
}
}
Is there anyway I can further debug this, or find why I am able to write to the queue, but unable to read a message off of it?
You have to start the JMS Connection by calling the start() method on it. You cannot receive any messages until the connection is started. This is noted in the JMS Specification and Javadoc.
As an aside, if you use the JMS 2.0 "simplified" API and create a JMSContext object (an object which is essentially a combined Connection and Session) you do not need to call start to receive messages. A consumer crated from it can be used to receive messages without being explicitly started.

Network connection between two embedded brokers to share topic messages

I'm trying to create a network of embedded brokers, the topology I'm trying to achieve is as follows:
So I want to run Broker 1 which would be the initial receiver of all the messages and hold a topic %X%. Then I want to connect Broker 2 and Broker 3 to Broker 1 and make them listen to Broker 1 through a network connection.
Eventually I want to allow consumers to receive messages from %X% topic connecting to Broker 2 and Broker 3.
So far I've written the following code:
Broker 1:
BrokerService broker = new BrokerService();
broker.addConnector("tcp://localhost:61616");
broker.addNetworkConnector("static:(tcp://localhost:61616)");
broker.start();
Broker 2:
BrokerService broker = new BrokerService();
broker.addConnector("tcp://localhost:61617");
broker.addNetworkConnector("static:(tcp://localhost:61616)");
broker.start();
Broker 3:
BrokerService broker = new BrokerService();
broker.addConnector("tcp://localhost:61618");
broker.addNetworkConnector("static:(tcp://localhost:61616)");
broker.start();
Producer:
public class Producer {
private Connection connection;
public Producer() throws JMSException {
// Create a ConnectionFactory
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory();
connectionFactory.setBrokerURL("tcp://localhost:61616");
connection = connectionFactory.createConnection();
connection.start();
....
}
public void produceMessage(int x) {
try {
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination destination = session.createTopic("Testtopic");
MessageProducer producer = session.createProducer(destination);
producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
String text = "Hello world " + x + "! From: " + Thread.currentThread().getName() + " : " + this.hashCode();
TextMessage message = session.createTextMessage(text);
System.out.println("Sent message: "+ message.hashCode() + " : " + Thread.currentThread().getName());
producer.send(message);
session.close();
}
......
}
}
Consumer:
public class Consumer {
public Consumer() throws JMSException {
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory();
connectionFactory.setBrokerURL("tcp://localhost:61618"); // BROKER 3
Connection connection = connectionFactory.createConnection();
connection.start();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageConsumer consumer = session.createConsumer(session.createTopic("Testtopic"));
consumer.setMessageListener(new HelloMessageListener());
}
private static class HelloMessageListener implements MessageListener {
public void onMessage(Message message) {
TextMessage textMessage = (TextMessage) message;
try {
System.out.println("Consumer " + Thread.currentThread().getName() + " received message: " + textMessage.getText());
.......
}
}
}
However, when I connect to tcp://localhost:61618 (which is Broker 3) by consumer, I cannot receive any message. In the meantime if a connect directly to
tcp://localhost:61616 (the initial receiver, Broker 1), consumer receives messages and everything goes well. I think I missed something in connectors configuration. Could you please help me with this?
Thanks,
Cheers
The networkConnectors look to have the wrong port in the uri.
should be:
On broker1:
.addNetworkConnector(tcp://localhost:61617)
.addNetworkConnector(tcp://localhost:61618)
You don't need the network connectors from 2, 3 back to 1.
I also suggest configuring the full object and adding some parameters to bolster the config... duplex="false", networkTTL=1, etc.

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