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From Todd <todd.sie...@gmail.com>
Subject NMS Consumer Not Receiving Messages
Date Mon, 12 Sep 2011 22:10:40 GMT
I've poked around a bit and haven't found anything in the forum or docs.

I created what is supposed to be an asynchronous consumer. I found some code
in the NMS docs that I adapted. See below. (You can ignore the XML
deserialization stuff.)

This worked once or twice, but I cannot get it to work anymore. What might
be wrong with this code?

Thanks for your help.

-Todd 

using System;
using Apache.NMS;
using Apache.NMS.Util;
using model;
using System.Xml.Serialization;
using System.IO;
using Domain.util;

namespace Service.AuditTrail
{
    class AuditTrailService
    {
        private IConnectionFactory factory;
        private string receiveQueueName;
        IConnection connection;
        ISession session;
        IDestination destination;
        IMessageConsumer consumer;


        private AuditTrailService(string hostUri, string receiveQueue)
        {
            Uri uri = new Uri(hostUri);
            factory = new NMSConnectionFactory(uri);
            receiveQueueName = receiveQueue;
        }

        private void Start()
        {
            Console.WriteLine("Starting AuditTrailService");
            SetupQueueListener();
        }

        #region Helper Methods
        private void SetupQueueListener()
        {
            using (IConnection connection = factory.CreateConnection())
            using (ISession session = connection.CreateSession())
            {
                IDestination destination =
SessionUtil.GetDestination(session, receiveQueueName);

                using (IMessageConsumer consumer =
session.CreateConsumer(destination))
                {
                    connection.Start();
                    consumer.Listener += new
MessageListener(OnMessageReceived);
                }
            }
        }

        private void OnMessageReceived(IMessage receivedMessage)
        {
            Console.WriteLine("Audit Trail Service message received...");
            ITextMessage textMessage = receivedMessage as ITextMessage;

            if (textMessage != null)
            {
                message message = ParseMessageText(textMessage.Text);
                AuditRecordManager manager = new AuditRecordManager();

                manager.addAuditRecord(message);
            }
            else
            {
                Console.Error.WriteLine("The received message was not an
ITextMessage.");
            }
        }

        private static message ParseMessageText(string text)
        {
            XmlSerializer ser = new XmlSerializer(typeof(message));
            StringReader reader = new StringReader(text);
            return (message)ser.Deserialize(reader);
        }
        #endregion

        #region Main Method
        static void Main(string[] args)
        {
            AuditTrailService service = new
AuditTrailService("activemq:tcp://localhost:61616",
                                                                               
"queue://from.srv.01.to.srv.07");
            service.Start();

            Console.WriteLine("Press enter to terminate service.");
            Console.Read();
        }
        #endregion
    }
}


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