Rebus RabbitMQ unable to subscribe

Question

I am trying to get rebus with RabbitMQ to retrieving the messages that I have successfully published to the message queue. What am I not doing that needs to be done. below is the example code?

static async Task MainSubscribeAsync()
        {

            var connection = "amqp://jhgj67546:yjyj5565@localhost";

            using (var activator = new BuiltinHandlerActivator())
            {
                activator.Register(() => new WagonHandler());

                var bus = Configure.With(activator)
                    .Logging(l => l.ColoredConsole())
                    .Transport(t => t.UseRabbitMq(connection, "wagon_v1")
                        .ExchangeNames(directExchangeName: "WamosExchange"))
                    .Start();

                await activator.Bus.Subscribe<Wagon>();

                Console.WriteLine("Done");
            }
        }

The handler class looks like this

class WagonHandler : IHandleMessages
    {
        public async Task Handle(Wagon message)
        {
            Console.WriteLine($"Token {message.Token}");
            Console.WriteLine($"WagonId {message.WagonId}");
        }
    }

score 3 · Accepted Answer · answered Aug 24 '17 at 08:42

This code

static async Task MainSubscribeAsync()
{

    var connection = "amqp://jhgj67546:yjyj5565@localhost";

    using (var activator = new BuiltinHandlerActivator())
    {
        activator.Register(() => new WagonHandler());

        var bus = Configure.With(activator)
            .Logging(l => l.ColoredConsole())
            .Transport(t => t.UseRabbitMq(connection, "wagon_v1")
                .ExchangeNames(directExchangeName: "WamosExchange"))
            .Start();

        await activator.Bus.Subscribe<Wagon>();

        Console.WriteLine("Done");
    }
}

starts the bus, establishes a subscription, and then immediately shuts down because the BuiltinHandlerActivator is disposed.

This means that you could be lucky and maybe receive a few messages, but in most cases you probably won't :)

You should instead configure the bus when your application starts, and then keep it as a singleton instance (as described on the wiki page about Rebus' instance policies) for the entire lifetime of your application, disposing it only when the application is shutting down.

Rebus RabbitMQ unable to subscribe

1 Answers1