I want to set the required queue manager when sending a JMS message.
Currently I am able to set the destination queue in the JMSReplyTO method, but I don't know how to also specify the queue manager.
TextMessage message = queueSession.createTextMessage();
message.setText(messageStr);
message.setJMSReplyTo(destinationQueue);
queueSender.send(message);
Here you go (for WebSphere MQ):
MQQueue replyToQ = new MQQueue(QMgrName, ReplyQueue);
Destination replyTo = (Destination) replyToQ;
message.setJMSReplyTo(replyTo);
I don't know which MQ you're using, but your class names look like WebSphere's ones, so I'll guess that's it.
The queue manager name can be set on the connection factory, before you get a connection from it. Use MQConnectionFactory#setBrokerQueueManager(String).
The IBM javadocs for the method are here, on publib.
If you're using ActiveMQ, then you can't set the queue manager, since ActiveMQ doesn't support that abstraction. You could name your broker to be whatever you want your messages to use as their queue manager, since ActiveMQ brokers and MQ managers are roughly equivalent. I have no idea if that will help at all, though. You may have to switch to using WebSphere's own MQ.
Related
I am trying to use a queue in activemq to dequeue messages from a virtual topic. I tried sending some messages and it is showing up in the topic under "message enqueued" but it is not able to be consumed.
The virtual topic name that i created was VirtualTopic.AA and the consumer is called Consumer.client1.VirtualTopic.AA.
In the consumer.client1.VirtualTopic.AA, i can see that there is a consumer but it is just not able to dequeue messages from the virtual topic.
Anyone knows why this is happening ? Do i need to change some settings in the configuration in the xml file ?
When you publish to a virtual topic using Spring's JmsTemplate, you need to configure it for a topic by setting the pubSubDomain property to "true".
From the JmsTemplate documentation:
If you want to use dynamic destination creation, you must specify the type of JMS destination to create, using the "pubSubDomain" property. For other operations, this is not necessary. Point-to-Point (Queues) is the default domain.
And in JmsDestinationAccessor#setPubSubDomain:
pubSubDomain - "true" for the Publish/Subscribe domain (Topics), "false" for the Point-to-Point domain (Queues)
I am a novice user for jmeter.
In my company i need to do load testing. I am using Hermes JMS to send request and response using the queues. So what should I use in jmeter, jms point to point or JMS publisher and subscriber. And I also want to set up the ftp location to get the files.
I tried both of those but getting the error in jndi properties:
"ERROR - jmeter.protocol.jms.sampler.JMSSampler: org.apache.activemq.jndi.ActiveMQInitialContextFactory javax.naming.NameNotFoundException: org.apache.activemq.jndi.ActiveMQInitialContextFactory"
I am not exactly sure how can I set up the queues that I am using in hermes.
How can I setup the JNDI settings? Or its default because I was reading online and everyone has Initial Context Factory as org.apache.activemq.jndi.ActiveMQInitialContextFactory and what about the queues do I need to provide my own queues or that's the default as well?
If you are using queues, you'll want to use JMS point to point. JMS publisher and subscriber uses JMS topics. If the queues already exist in ActiveMQ (and they appear to since you can see them in Hermes), you'll need to configure JMeter to use those. It sounds like your JNDI settings are incorrect and JMeter cannot find the JNDI name you're telling it to look for.
Regarding the 2nd part of your question: when using a JMS Publisher, you can use the dynamicQueues/ prefix for your destination when creating queues, dynamicTopics/ for topics, e.g. dynamicQueues/my.testqueue
You need to make sure that you have the 'activemq-all-[version].jar' file in the lib folder of JMeter so that when you set the 'Initial Context Factory' property to 'org.apache.activemq.jndi.ActiveMQInitialContextFactory' (as well as the 'QueueConnection Factory' resource to 'ConnectionFactory') in the JMS Sampler the latter is found and initiated by JMeter.
I am using a distributed jms queue and weblogic is my app server. There are three jms servers deployed in my clustered enviroment. The producers just send the message using name of queue jndi lookup 'udq' for example. Now I have associated a consumer for each jms server and I was able to consume the message, no problem so far.
Here is question, can I have a single consumer to consume the messages from the 3 jms servers. The weblogic allows jndi naming for destination lookup with following syntax #
qsession1 = qcon1.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
qsession2 = qcon2.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
qsession3 = qcon3.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
queue1 = (Queue)ctx.lookup("JMSServer-1#UDQ");
queue2 = (Queue)ctx.lookup("JMSServer-2#UDQ");
queue3 = (Queue)ctx.lookup("JMSServer-3#UDQ");
qreceiver1 = qsession1.createReceiver(queue1);
qreceiver2 = qsession2.createReceiver(queue2);
qreceiver3 = qsession3.createReceiver(queue3);
qreceiver1.setMessageListener(this);
qreceiver2.setMessageListener(this);
qreceiver3.setMessageListener(this);
qcon1.start();
qcon2.start();
qcon3.start();
I have only one OnMessage implemented for the above consumer. This does not work. Any suggestions please..
No, you can't have a consumer receiving messages from more than one JMS server. A consumer can receive messages from only one JMS server. You need to create multiple consumers to receive messages from multiple JMS servers.
you can use "Queue Forwarding" function.
From online documentation of wls 10.3:
"Queue members can forward messages to other queue members by configuring the Forward Delay attribute in the Administration Console, which is disabled by default. This attribute defines the amount of time, in seconds, that a distributed queue member with messages, but which has no consumers, will wait before forwarding its messages to other queue members that do have consumers."
here a link: http://docs.oracle.com/cd/E13222_01/wls/docs103/jms/dds.html#wp1260816
You can configure this feature from administration of each single queue.
When sending (InOnly) JMS messages with Apache Camel, can I read back the different JMS headers that might have been set automatically on the message, when it was sent?
from("foo:bar")
.to(ExchangePattern.InOnly,"jms:queue:whatever")
.log("msg id set = ${in.header.JMSMessageId}");
I just can't figure out how to send the message "one way" but keeping the sent JMS message as "in" message in the route afterwards.
Background:
I know that I can present some values, but it would be easier if they where set by the actual JMS implementation. For instance, in this case, I want to work with WebSphere SIBus, WebSphere MQ and ActiveMQ. It's best to rely on WebSphere MQs internal message id format, because it will only index certain message formats. It might be similar aspects on the WebSphere SIBus implementation.
This feature is available starting at 2.10.3 and 2.11.0.
I'm connecting to an IBM Websphere MQ and currently reading one message at a time using the method receive() from the object:
javax.jms.Message;
Is there a way to retrieve multiple messages from the queue in one go?
Many thanks,
G.
Depends on whether you make a distinction between "read" and "retrieve".
From a JMS perspective, no. The API will return one message per method call.
From the WMQ perspective, yes - provided the client and queue manager are both at v7 and the messages are non-persistent or being browsed. In this case you can enable read-ahead in the managed object definition or dynamically at run time. The queue manager will stream several messages off of the queue and deliver them to the application before the first one is acknowledged. For more information on this, see Using read ahead with WebSphere MQ classes for JMS.