access to activemq statistics plugin in C# .NET

Question

I am trying to access the activemq statistics int C# taking this example:

http://activemq.apache.org/statisticsplugin.html

Y tried many ways but my received MapMessage is null or throw exception like "cannot convert AMQMessage to MapMessage"

this is my class:

public class Statistics
{
    private readonly IConnectionFactory connectionFactory;
    private readonly IConnection connection;
    private readonly ISession session;

    public Statistics( string brokerUri)
    {
        this.connectionFactory = new ConnectionFactory(brokerUri);
        this.connection = connectionFactory.CreateConnection();
        this.connection.Start();
        this.session = connection.CreateSession();
    }

    public void GetStats()
    {
        // Crear consumidor


        try
        {
            // Creo una cola y consumidor
            IDestination queueReplyTo = session.CreateTemporaryQueue();
            IMessageConsumer consumer = session.CreateConsumer(queueReplyTo);


            // Crear cola  y productor
            ActiveMQQueue newQueue = new ActiveMQQueue("ActiveMQ.Statistics.Destination.TEST1");
            IMessageProducer producer = session.CreateProducer(null);

            // Crear cola monitorizada
            string listeningQueue = "TEST1";
            ActiveMQQueue query = new ActiveMQQueue(listeningQueue);

            // Mandar mensaje vacío y replicar
            IMessage msg = session.CreateMessage();
            producer.Send(newQueue, msg);
            msg.NMSReplyTo = queueReplyTo;
            producer.Send(query, msg);

            // Recibir
            IMapMessage reply = (IMapMessage)consumer.ReceiveNoWait();


            if (reply != null)
            {
                IPrimitiveMap statsMap = reply.Body;

                foreach (string statKey in statsMap.Keys)
                {
                    Console.WriteLine("{0} = {1}", statKey, statsMap[statKey]);
                }
            }
        }
        catch (Exception e)
        {
            var t = e.Message + " " + e.StackTrace;
        }
    }


}

Where is my erroris my error? Thanks in advance

Hassen Bennour · Answer 1 · 2016-10-26T17:53:20.367

1

can you try this:

public class Statistics
{
    private readonly IConnectionFactory connectionFactory;
    private readonly IConnection connection;
    private readonly ISession session;

    public Statistics( string brokerUri)
    {
        this.connectionFactory = new ConnectionFactory(brokerUri);
        this.connection = connectionFactory.CreateConnection();
        this.connection.Start();
        this.session = connection.CreateSession();
    }

    public void GetStats()
    {
        // Crear consumidor


        try
        {
            // Creo una cola y consumidor
            IDestination queueReplyTo = session.CreateTemporaryQueue();
            IMessageConsumer consumer = session.CreateConsumer(queueReplyTo);

            // Crear cola monitorizada
            string listeningQueue = "TEST1";
            ActiveMQQueue testQueue  =  session.GetQueue(listeningQueue);


            // Crear cola  y productor
            ActiveMQQueue query =  session.GetQueue("ActiveMQ.Statistics.Destination.TEST1");
            IMessageProducer producer = session.CreateProducer(null);

            // Mandar mensaje vacío y replicar
            IMessage msg = session.CreateMessage();
            producer.Send(testQueue, msg);
            msg.NMSReplyTo = queueReplyTo;
            producer.Send(query, msg);

            // Recibir
            IMapMessage reply = (IMapMessage)consumer.Receive();


            if (reply != null)
            {
                IPrimitiveMap statsMap = reply.Body;

                foreach (string statKey in statsMap.Keys)
                {
                    Console.WriteLine("{0} = {1}", statKey, statsMap[statKey]);
                }
            }
        }
        catch (Exception e)
        {
            var t = e.Message + " " + e.StackTrace;
        }
    }


}

edited Oct 26 '16 at 17:53

answered Oct 26 '16 at 09:22

Hassen Bennour

3,885
2
12
20

I think that messages to the "queueReplyTo" are automatically sended when a message is sended to the others declared queues. I dont know how 'statistics' works and i dont find information of how to use it in .NET – Sem Oct 26 '16 at 13:25
i think you need to read carefully http://activemq.apache.org/statisticsplugin.html to understand the concept. I updated my response with c# code – Hassen Bennour Oct 26 '16 at 14:13
"CreateQueue" is not in ISession API – Sem Oct 26 '16 at 14:27
try with GetQueue – Hassen Bennour Oct 26 '16 at 14:46
consumer.Receive() is waiting infinitely. No messages in 'queueReplyTo' queue.... i dont understand when a message is sended to 'queueReplyTo' and who do it? – Sem Oct 26 '16 at 16:04
I hope thay you have enabled this – Hassen Bennour Oct 26 '16 at 16:15
If plugin is enabled i think you have to set a string property "JMSReplyTo" with value "TEST1" to the message – Hassen Bennour Oct 26 '16 at 16:21
Message is sent immediately by the broker to queueReplyTo – Hassen Bennour Oct 26 '16 at 17:54
Here is another question for the same topic http://stackoverflow.com/questions/15746391/how-to-access-the-activemq-statistics-plugin-in-net?rq=1 – Hassen Bennour Oct 26 '16 at 18:03
Hassen Bennour where must i add that plugin ? in app.config of my project ? – Sem Oct 27 '16 at 15:37

access to activemq statistics plugin in C# .NET

1 Answers1