StructureMap InstanceInterceptor not being called - inversion-of-control

Question

I want to intercept the creation of an instance in SM and I'm trying the following but it's not calling the InstanceInterceptor implementation, does anyone know why?
ForRequestedType<IPublishResources>()
.TheDefault
.Is
.OfConcreteType<PublisherService>()
.InterceptWith(new PublisherServiceInterceptor());
The test code uses the ObjectFactory to create instances, and is shown below:
// Given we have a configure object factory in StructureMap...
ObjectFactory.Configure(x => x.AddRegistry(new StructureMapServiceRegistry()));
// When we request a publisher service...
var publisher = ObjectFactory.GetInstance<IPublishResources>();
Cheers
AWC

Answer 1

I could not reproduce your problem in release 2.5.4. Here is my code.
public interface IPublishResources {}
class PublishResources : IPublishResources {}
public class LoggingInterceptor : InstanceInterceptor
{
//this interceptor is a silly example of one
public object Process(object target, IContext context)
{
Console.WriteLine("Interceptor Called");
return context.GetInstance<PublishResources>();
}
}
public class MyRegistry : Registry
{
public MyRegistry()
{
For<IPublishResources>()
.Use<PublishResources>()
.InterceptWith(new LoggingInterceptor());
}
}
[TestFixture]
public class Structuremap_interception_configuraiton
{
[Test]
public void connecting_implementations()
{
var container = new Container(cfg =>
{
cfg.AddRegistry<MyRegistry>();
});
container.GetInstance<IPublishResources>();
}
}
A question. Do you really need to use an Interceptor here? If you only need to define a factory you can do somethign like this.
public interface IPublishResourcesFactory
{
IPublishResources Create();
}
public class MyRegistry : Registry
{
public MyRegistry()
{
For<IPublishResources>().Use(c =>
{
return c.GetInstance<IPublishResourcesFactory>().Create();
});
//or
For<IPublishResources>().Use(c =>
{
//other object building code.
return new PublishResources();
});
}
}