StructureMap get requested type

Question

Is it possible to pass the requesting type as a parameter when configuring a StructureMap container.

For example:

            container.Configure(x => {
                x.For<ILogger>().Use(new TestLogger(log.Add, requestingType));         
            });

Where requesting type is the consuming object's type:

public class SomeClass
{
    private readonly ILogger logger;
    public SomeClass(ILogger logger)
    {
        this.logger = logger;
    }
}

So the type passed to the logger would be SomeNamespace.SomeClass.

Thanks, Ben

Answer 1

I found a solution here

Basically we changed the ILogger interface to ILogger<T> and made use of the generic type inference feature in StructureMap.

Strictly speaking this doesn't answer my question of whether I can get the requesting type so if you know how to do this please respond - it would be useful to know.

Answer 2

First I want to point out a potential gotcha, registering an instance with Use(new Type()) causes that instance to be registered as a singleton. To avoid this, you can do Use(() => new Type()).

Here is how you get the requested type at configuration time:

container.Configure(x => {
  x.For<ILogger>().Use(c => new TestLogger(log.Add, c.Root.RequestedType));
});