Autofac & MassTransit - Register Consumer ObjectDisposedException - asp.net-core

Question

Context: ASP.NET Core App (1.1).
I try to resolve the IRepository that i've already registered when i need a consumer instance, but it looks like i receive a ObjectDisposedException.
I created a bus factory method that auto activates when i call .Build() method of the ContainerBuilder.
public IServiceProvider ConfigureServices(IServiceCollection services)
{
var containerBuilder = new ContainerBuilder();
containerBuilder.RegisterType<EventTypeResolver>().As<IEventTypeResolver>();
containerBuilder.RegisterType<Repository>().As<IRepository>();
containerBuilder.Register(c => EventStoreConnectionFactory.Create())
.As<IEventStoreConnection>();
containerBuilder.Register(BusFactoryMethod).AsSelf().SingleInstance().AutoActivate();
containerBuilder.Populate(services);
return new AutofacServiceProvider(containerBuilder.Build());
}
BusFactoryMethod looks like this:
private IBusControl BusFactoryMethod(IComponentContext componentContext)
{
var busControl = BusConfigurator.Instance.ConfigureBus((cfg, host) =>
{
cfg.ReceiveEndpoint(host, RabbitMQConstants.UserManagementQueue, e =>
{
e.Consumer(() => new CreateUserCommandConsumer(componentContext.Resolve<IRepository>()));
});
});
busControl.Start();
return busControl;
}

Answer 1

So i've found a package MassTransit.AutofacIntegration which already has a RegisterConsumers method.
Then i used Autofac's RegisterGeneric method in order to get a lifetime per message.
containerBuilder.RegisterGeneric(typeof(AutofacConsumerFactory<>))
.WithParameter(new NamedParameter("name", "message"))
.As(typeof(IConsumerFactory<>))
.InstancePerLifetimeScope();
And ended up with the following Module:
public class DefaultModule : Autofac.Module
{
protected override void Load(ContainerBuilder containerBuilder)
{
containerBuilder.Register(c => new EventTypeResolver(typeof(DefaultModule).GetTypeInfo().Assembly)).As<IEventTypeResolver>();
containerBuilder.Register(c => EventStoreConnectionFactory.Create())
.As<IEventStoreConnection>();
containerBuilder.RegisterType<Repository>().As<IRepository>();
containerBuilder.RegisterConsumers(typeof(DefaultModule).GetTypeInfo().Assembly).AsSelf().AsImplementedInterfaces();
containerBuilder.RegisterGeneric(typeof(AutofacConsumerFactory<>))
.WithParameter(new NamedParameter("name", "message"))
.As(typeof(IConsumerFactory<>))
.InstancePerLifetimeScope();
containerBuilder.Register((c) =>
{
var busControl = BusConfigurator.Instance.ConfigureBus((cfg, host) =>
{
ConfigureEndPoints(cfg, host, c);
});
busControl.Start();
return busControl;
}).SingleInstance().AutoActivate();
}
private void ConfigureEndPoints(IRabbitMqBusFactoryConfigurator cfg, IRabbitMqHost host, IComponentContext context)
{
cfg.ReceiveEndpoint(host, RabbitMQConstants.UserManagementQueue, e =>
{
e.Consumer(context.Resolve<IConsumerFactory<CreateUserCommandConsumer>>());
});
}
}
ConfigureServices method is now looking like this:
public IServiceProvider ConfigureServices(IServiceCollection services)
{
var containerBuilder = new ContainerBuilder();
containerBuilder.RegisterModule<DefaultModule>();
containerBuilder.Populate(services);
return new AutofacServiceProvider(containerBuilder.Build());
}