Some types do not get decorated

[dario-l]

I have a very strange symptom. Some classes (CommandHandlers) have been decorated and others with exactly the same structure, located in a different directory (different namespace) are not.

I have no idea where to look for the cause.

The class structure is as follows:

internal static class Create
{
    public record Command( ... ) : ICommand<int>;

    public class CommandHandler : ICommandHandler<Command, int>
    {
        ...
    }
}

Dispatcher looks like this:

    public async Task<TResult> SendAsync<TResult>(ICommand<TResult> command, CancellationToken token = default)
    {
        var handlerType = typeof(ICommandHandler<,>).MakeGenericType(command.GetType(), typeof(TResult));
        using var scope = _serviceFactory.CreateScope();
        var handler = scope.ServiceProvider.GetRequiredService(handlerType);

         ...
    }

Registration:

        builder.Services.Scan(s => s.FromAssemblies(assemblies)
            .AddClasses(c =>
            {
                c.AssignableToAny(
                        typeof(ICommandHandler<,>),
                        typeof(ICommandHandler<>),
                        typeof(IQueryHandler<,>),
                        typeof(IEventHandler<>))
                    .WithoutAttribute<DecoratorAttribute>();
            }, false)
            .AsImplementedInterfaces()
            .WithScopedLifetime());

I have absolutely no idea why decorating works that inconsistently. 😢

[khellang]

Hey @dario-l! 👋🏻

I don't know what to tell you; it sounds weird to me too, but until I have a repro, there's not much I can do with the little information I have from this issue 😔

[dario-l]

Hi @khellang
Thanks for the response. I'm just imbecil but I will write my experience with that.

All handlers have the following generic constraints: class, IMessage but becouse of my stupidness I slap on my decorators also constraint new().

Because of this, decorators only worked on messages that had an empty/default constructor.

From my perspective some works but some other do not. 😄