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POHow to kill consumers in activemq
 

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  1. POHow to kill consumers in activemq
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    <p>I am trying to get rid of all of the "Number of Consumers" in a certain queue. Whenever I purge/delete the queue, the number of consumers still remain if I ever create that queue with the same name again. Even with 0 pending messages, there are still 6 consumers.</p> <p>My problem may have stemmed in my java code while not closing the session or connection.</p> <p>I have tried both restarting and reinstalling the server.</p> <p>Here is my producer code:</p> <pre><code> private static String url = ActiveMQConnection.DEFAULT_BROKER_URL; public static String addElementToQueue(String queueName,String param1, String param2) throws JMSException, NamingException { // Getting JMS connection from the server and starting it ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url); Connection connection = connectionFactory.createConnection(); // JMS messages are sent and received using a Session. We will // create here a non-transactional session object. If you want // to use transactions you should set the first parameter to 'true' Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); // Destination represents here our queue on the // JMS server. You don't have to do anything special on the // server to create it, it will be created automatically. Destination destination = session.createQueue(queueName); // MessageProducer is used for sending messages (as opposed // to MessageConsumer which is used for receiving them) MessageProducer producer = session.createProducer(destination); String queueMessage = param1+ "-" + param2; TextMessage message = session.createTextMessage(queueMessage); // Here we are sending the message! producer.send(message); connection.close(); session.close(); // added after problem came up producer.close(); // added after problem came up return commandID; } </code></pre> <p>Here is my consumer code:</p> <pre><code> // URL of the JMS server private static String url = ActiveMQConnection.DEFAULT_BROKER_URL; public static Pair consumeNextElement(String queueName) throws JMSException { // Getting JMS connection from the server ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url); Connection connection = connectionFactory.createConnection(); connection.start(); // Creating session for seding messages Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); // Getting the queue Destination destination = session.createQueue(queueName); // MessageConsumer is used for receiving (consuming) messages MessageConsumer consumer = session.createConsumer(destination); // Here we receive the message. // By default this call is blocking, which means it will wait // for a message to arrive on the queue. Message message = consumer.receive(); // There are many types of Message and TextMessage // is just one of them. Producer sent us a TextMessage // so we must cast to it to get access to its .getText() // method. String[] parts = ((TextMessage)message).getText().split("-"); Pair retVal = new Pair(parts[0], parts[1]); connection.close(); session.close(); // added after problem came up consumer.close(); // added after problem came up return retVal; } </code></pre> <p>Any thoughts?</p> <p>Thanks.</p>
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    1. PTQuestion
    1. USChris Ridmann
    1. USChris Ridmann
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    1. COpost some code!!
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      1. POHow to kill consumers in activemq
      1. USBhavik Shah
    2. COMy edits contain consumer/producer code. thanks.
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      1. USChris Ridmann
    3. COwhat is the use case that would require you to kill the consumers after purging a queue?
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      1. POHow to kill consumers in activemq
      1. USBen ODay
 

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