C#•3y ago

✅ Contracts.dll for Domain not being activated

Hi, I'm trying out to build a Domain project where I have a Contracts project, that will have the interfaces (and logics) used in the Webclient.

I'm getting this error:
System.InvalidOperationException: Unable to resolve service for type 'Workcruit.Domain.Contracts.Interfaces.ITestInterface' while attempting to activate 'BackendForFrontend.Controllers.AuthController'.
at Microsoft.Extensions.DependencyInjection.ActivatorUtilities.GetService(IServiceProvider sp, Type type, Type requiredBy, Boolean isDefaultParameterRequired)
at lambda_method8(Closure, IServiceProvider, Object[])
at Microsoft.AspNetCore.Mvc.Controllers.ControllerFactoryProvider.<>cDisplayClass6_0.<CreateControllerFactory>gCreateController|0(ControllerContext controllerContext)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeInnerFilterAsync()
--- End of stack trace from previous location ---
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResourceFilter>gAwaited|25_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeFilterPipelineAsync()
--- End of stack trace from previous location ---
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>gLogged|17_1(ResourceInvoker invoker)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>gLogged|17_1(ResourceInvoker invoker)
at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>gAwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddlewareImpl.Invoke(HttpContext context)

My code in the Domain:

ITest.cs
namespace Workcruit.Domain.Contracts.Interfaces
{
    public interface ITestInterface
    {
        Task<string> Test();
    }
}

Test.cs
public class Test : Contracts.Interfaces.ITestInterface
{
    Task<string> ITestInterface.Test()
    {
        return Task.FromResult("Test");
    }
}

Program.cs
public class Program
{
    static async Task Main(string[] args)
    {
        Console.WriteLine("Workcruit.Domain");
        try
        {
            Console.WriteLine("Starting Workcruit.Domain...");
            await Host.CreateDefaultBuilder()
            .ConfigureServices((hostContext, services) =>
            {
                services.AddHostedService<HostService>();
                services.AddScoped<Contracts.Interfaces.ITestInterface, Workcruit.Domain.Services.Test>();
            })
            .RunConsoleAsync();
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.ToString());
        }
    }
}

ITest.cs
namespace Workcruit.Domain.Contracts.Interfaces
{
    public interface ITestInterface
    {
        Task<string> Test();
    }
}

Test.cs
public class Test : Contracts.Interfaces.ITestInterface
{
    Task<string> ITestInterface.Test()
    {
        return Task.FromResult("Test");
    }
}

Program.cs
public class Program
{
    static async Task Main(string[] args)
    {
        Console.WriteLine("Workcruit.Domain");
        try
        {
            Console.WriteLine("Starting Workcruit.Domain...");
            await Host.CreateDefaultBuilder()
            .ConfigureServices((hostContext, services) =>
            {
                services.AddHostedService<HostService>();
                services.AddScoped<Contracts.Interfaces.ITestInterface, Workcruit.Domain.Services.Test>();
            })
            .RunConsoleAsync();
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.ToString());
        }
    }
}

Code in the WebClient:

public AuthController(Workcruit.Domain.Contracts.Interfaces.ITestInterface testInterface)
{
    _testInterface = testInterface;
}

public async Task<ActionResult> Test()
{
    string test = await _testInterface.Test();
    return Ok(test);
}

public AuthController(Workcruit.Domain.Contracts.Interfaces.ITestInterface testInterface)
{
    _testInterface = testInterface;
}

public async Task<ActionResult> Test()
{
    string test = await _testInterface.Test();
    return Ok(test);
}

Getting the error written at the top of this thread.

JakenVeina•10/1/23, 7:59 PM

System.InvalidOperationException: Unable to resolve service for type 'Workcruit.Domain.Contracts.Interfaces.ITestInterface' while attempting to activate 'BackendForFrontend.Controllers.AuthController

You have not registered with your IoC container

JJakenVeina > System.InvalidOperationException: Unable to resolve service for type 'Workcrui...

julianOP•10/1/23, 8:19 PM

Hmm, how do I register it in the IoC container? I'm pretty new to Domain

julianOP•10/1/23, 8:21 PM

I know how to work with Domains, but not creating them

JakenVeina•10/1/23, 8:44 PM

no idea what is

JakenVeina•10/1/23, 8:44 PM

but somewhere you're using

JJakenVeina but somewhere you're using `Microsoft.Extensions.DependencyInjection`

julianOP•10/1/23, 9:53 PM

But I'm registering the ITestService in my Program.cs

This is how it looks in the WebClient:

julianOP•10/1/23, 9:53 PM

This is the Program.cs in the other project:

julianOP•10/1/23, 9:54 PM

julianOP•10/1/23, 9:54 PM

Trying to expose the Contracts project, and I'm able to see the interfaces in my other project, but they aren't getting activated.

JakenVeina•10/1/23, 11:52 PM

okay, so is the project you're running that is throwing?

JJakenVeina okay, so `.Domain` is the project you're running that is throwing?

julianOP•10/2/23, 7:00 AM

It's throwing inside the project, that's a seperate project, even though it's activated in the project

JakenVeina•10/2/23, 7:00 AM

uhm

JakenVeina•10/2/23, 7:01 AM

well, I don't see any project, for one

julianOP•10/2/23, 7:01 AM

It's not in the same solution, it's two completely different projects

JakenVeina•10/2/23, 7:01 AM

then why are we looking at code in this solution?

JakenVeina•10/2/23, 7:02 AM

specifically, why are we not looking at the bootstrapping code for the project where the issue is actually happening?

JakenVeina•10/2/23, 7:02 AM

why are we looking at code that doesn't RUN in the project where the issue is actually happening?

julianOP•10/2/23, 7:03 AM

This is how it's setup inside the project where it's crashing

JakenVeina•10/2/23, 7:03 AM

does the project load and call ?

Jjulian ```cs private readonly Workcruit.Domain.Contracts.Interfaces.ITestInterface _tes...

JakenVeina•10/2/23, 7:03 AM

that's not a setup for anything

JakenVeina•10/2/23, 7:03 AM

and you already posted that

JakenVeina•10/2/23, 7:04 AM

that snippet does not contain an IoC registration for

julianOP•10/2/23, 7:15 AM

But I don't have access to the implementation, only the Interface, so how would I activate it in the Projhect?

JakenVeina•10/2/23, 7:16 AM

huh?

JakenVeina•10/2/23, 7:16 AM

we're talking about registering it

JakenVeina•10/2/23, 7:16 AM

the IoC container activates it

JakenVeina•10/2/23, 7:16 AM

how would you not "have access" to it?

JakenVeina•10/2/23, 7:24 AM

where is your IoC setup code in ?

JJakenVeina where is your IoC setup code in `.WebClient`?

julianOP•10/2/23, 7:49 AM

JakenVeina•10/2/23, 3:17 PM

there is no registration for

JJakenVeina there is no registration for `ITestInterface`

julianOP•10/2/23, 4:38 PM

Tried doing that. I'm getting this error:

System.ArgumentException: 'Cannot instantiate implementation type 'Workcruit.Domain.Contracts.Interfaces.ITestInterface' for service type 'Workcruit.Domain.Contracts.Interfaces.ITestInterface'.'

JakenVeina•10/2/23, 5:51 PM

right, you have register a concrete type

JakenVeina•10/2/23, 5:52 PM

what implementation of do you intend to use in

JakenVeina•10/2/23, 5:53 PM

if you can't do

how do you expect the IoC container to?

JJakenVeina what implementation of `ITestInterface` do you intend to use in `.WebClient`

julianOP•10/2/23, 6:26 PM

I'm just trying to setup the project.

It's mostly to seperate logics. So Core/Business logics etc. will be in the , and the WebApp/WebClient will be in .

But It's supposed to be SQL queries etc. in the

JakenVeina•10/2/23, 6:29 PM

that sounds wonderful and irrelevant to me

JakenVeina•10/2/23, 6:29 PM

what implementation of do you intend to use in

JJakenVeina > what implementation of `ITestInterface` do you intend to use in `.WebClient`

julianOP•10/2/23, 10:56 PM

The ITestInterface will be removed once I get this working. Currently the ITestInterface is just to get the two projects working together. ITestInterface has a Test() method, that just returns a string.

So, there is no purpose of ITestInterface other than getting the two projects to actually work together, so I actually can implement the logics I want..

JakenVeina•10/2/23, 11:11 PM

once I get this working

get what working? What is not working other than your attempts to use ? How is supposed to "get the two projects working together"? What does "get the two projects working together" even mean?

Accord•10/4/23, 9:16 AM

Was this issue resolved? If so, run

/close

/close

otherwise I will mark this as stale and this post will be archived until there is new activity.