Issues trying to use Windsor or Autofac

[Patrick Doran]

I have put together a sample project where I am trying to use a Windsor Installer or Autofac Module to contain my setup for my service.  In registering my components both seem to have the same problem (perhaps my ignorance of IoC) but if I register with Windsor like so:

container.Register(Component.For<IConsumer>.ImplementedBy<Passenger>(),

I will get this:

ERROR 3 MassTransit.Transports.Endpoint - An exception was thrown preparing the message consumers

Castle.MicroKernel.ComponentNotFoundException: No component for supporting the service BusService.Consumers.Passenger was found

   at Castle.MicroKernel.DefaultKernel.Castle.MicroKernel.IKernelInternal.Resolve(Type service, IDictionary arguments, IReleasePolicy policy)

   at Castle.MicroKernel.DefaultKernel.Resolve(Type service, IDictionary arguments)

   at Castle.Windsor.WindsorContainer.Resolve[T]()

   at MassTransit.WindsorIntegration.WindsorConsumerFactory`1.<GetConsumer>d__0`1.MoveNext() in d:\BuildAgent-03\work\19b3d91f8acfae7a\src\Containers\MassTransit.WindsorIntegration\WindsorConsumerFactory.cs:line 36

   at System.Linq.Enumerable.<SelectManyIterator>d__14`2.MoveNext()

   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()

   at System.Linq.Enumerable.<SelectManyIterator>d__14`2.MoveNext()

   at MassTransit.Context.ServiceBusReceiveContext.<ReceiveFromEndpoint>b__0(IReceiveContext context) in d:\BuildAgent-03\work\19b3d91f8acfae7a\src\MassTransit\Context\ServiceBusReceiveContext.cs:line 102

   at MassTransit.Transports.Endpoint.<>c__DisplayClass9.<Receive>b__5(IReceiveContext acceptContext) in d:\BuildAgent-03\work\19b3d91f8acfae7a\src\MassTransit\Transports\Endpoint.cs:line 264

However,

container.Register(Component.For<Passenger>, works just fine.  Autofac has essentially the same problem, except it won't even register the consumer correctly (no errors, but nothing responds to the receipt of the message).

Here is my sample project: https://github.com/pdoran/BusStopFun

[Jeramy Rutley]

Passenger has to implement IConsumer if you want the line

container.Register(Component.For<IConsumer>.ImplementedBy<Passenger>(),

to work.  Right now the only interface it implements is Consumes<FareMessage>.Context

[Dru Sellers]

On top of that you'll need to register the concrete type not the interface if you use the built in MT container loadfrom

-d

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[Patrick Doran]

Jeramy,

I thought so too, however after changing Passenger to have this signature:

class Passenger : Consumes<FareMessage>.Context, IConsumer

I still get the same error.

[Dru Sellers]

Consumes<FareMessage>.Context is an interface that inherits from IConsumer. https://github.com/MassTransit/MassTransit/blob/master/src/MassTransit/Consumes.cs#L81

so that's already done. we don't look through the container via the interface because a consumer can have multiple interfaces on it. So we need the concrete types.

You can see the windsor test here:

https://github.com/MassTransit/MassTransit/blob/master/src/Containers/MassTransit.Containers.Tests/CastleWindsor_Specs.cs#L42

-d

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[Patrick Doran]

Dru,

Brilliant, I had looked at that test case to see how it should work and figured out when switching to that method in my code was working. What is interesting is that Autofac and Windsor behave slightly differently, in that Autofac it never sets up the consumer where as with Windsor it does but then throws this error. I think it all makes sense now based on your comment. 

Thanks!

[Dru Sellers]

When I wrote this I was a much bigger StructureMap/Windsor guy - so if our autofac is weird you can blame me for that.

:)

-d

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[Chris Patterson]

It sounds like you have this figured out, but changing:

https://github.com/pdoran/BusStopFun/blob/master/Modules/RouteOneModule.cs#L24

To just be

builder.RegisterType<Passenger>();

Should resolve the issue. You can also create a custom message scope, as is used by the AutofacConsumerFactory, so that dependencies of

the consumer class can be instantiated within the lifetime scope of the message consumer.

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[Patrick Doran]

Chris,

I do, but that extra tidbit of info is great to know, because it was what I was going to investigate next! 

Thanks for the replies guys!