Mediatr: Manually register Mediatr and handlers

[grokky1]

I'm using ASP.NET Core, with the built-in container. Automatic registration is done like so:

services.AddMvc();
services.AddMediatR(typeof(Startup));

This automatically 1) configures MediatR, and 2) registers all handlers found in the assembly.

But how do I register my handlers manually?

I saw this in the source:

public static void AddMediatR(this IServiceCollection services, IEnumerable<Type> handlerAssemblyMarkerTypes)
{
    AddRequiredServices(services);
    AddMediatRClasses(services, handlerAssemblyMarkerTypes.Select(t => t.GetTypeInfo().Assembly));
}

I assume I should call AddRequiredServices() to setup MediatR itself, and then manually register my handlers using services.AddTransient<MyHandler>().

But AddRequiredServices() is private.

[jbogard]

Register handlers manually?

Don't use this package? The point of this package is to automatically register handlers.

[grokky1]

@jbogard My point is if I manually register handlers, surely there is more I need to do to configure MediatR itself?

The AddMediatR() automatic registration calls

AddRequiredServices(services);
AddMediatRClasses(services, handlerAssemblyMarkerTypes.Select(t => t.GetTypeInfo().Assembly));

The second is to register handlers, which I'd like to do manually.

But the first first is for MediatR itself. Which is private. I assume I need to implement that?

[jbogard]

Oh yeah, at that point I'd just look at the code inside this and copy-paste what you need for your project.

[grokky1]

Yeah. Would be useful if that method were public though.