How to discard faulted messages when using the ConfigureEndpoints method in MassTransit?

Question

This article provides an example of how to do this when configuring an endpoint manually.

Just like this:

cfg.ReceiveEndpoint("input-queue", ec =>
{
    ec.DiscardFaultedMessages();
});

But I've got a lot of consumers and I don't want to configure each of them manually, so I use methods AddConsumers and ConfigureEndpoints .
Like this:

    services.AddMassTransit(cfg =>
        {
            cfg.AddConsumers(Assembly.GetExecutingAssembly());
            cfg.AddBus(sp => Bus.Factory.CreateUsingRabbitMq(x => x.ConfigureEndpoints(sp)));
        });

If I additionally call the ReceiveEndPoint method (before or after calling ConfigureEndpoints ), the exception "A receive endpoint with the same key was already added" is thrown.

Is there a way to configure a specific endpoint when using ConfigureEndpoints method?

Answer 1

When using ConfigureEndpoints , consumers, sagas, and activites are configured on receive endpoints automatically. To configure the receive endpoint for a specific consumer, create a consumer definition . If scanning an assembly for consumers, matching consumer definitions will also be discovered.

public class SubmitOrderConsumerDefinition :
    ConsumerDefinition<SubmitOrderConsumer>
{
    protected override void ConfigureConsumer(IReceiveEndpointConfigurator endpointConfigurator,
        IConsumerConfigurator<SubmitOrderConsumer> consumerConfigurator)
    {        
        endpointConfigurator.DiscardFaultedMessage();
    }
}