C#•5d ago

✅ Register services based on Mediator registrated RequestClassHandlerWrapper &CommandClassHandlerWra

Hello folks 👋. I am not good at Roslyn source gens at all. Can somebody point me what should I do to make IValidationErrorFactory<> instances source generated by Roslyn. Or send me a guide lines / docs I needed for this. Appreciate ur help When the node (record, class, struct, whatever...) which implements interface

Mediator.IRequest<Task_Manager.Common.Result<@TResponse, Task_Manager.Common.OneOfError<@TError, Task_Manager.Common.ValidationError>>>

┌─────────────┬───────────┴────────────────────────────────────┘ found, it is getting it @TResponse and @TError types in generic and it's name and produce the following code:

$"""
// <auto-generated />

// using's here

namespace Task_Manager.Identity.Application;

public class ${@name}_ValidationErrorFactory
    : Task_Manager.Common.IValidationErrorFactory<Task_Manager.Common.Result<${@TResponse}, Task_Manager.Common.OneOfError<${@Terror}, Task_Manager.Common.ValidationError>>>
{
    public Task_Manager.Common.Result<${@TResponse}, Task_Manager.Common.OneOfError<${@Terror}, Task_Manager.Common.ValidationError>> Create(Task_Manager.Common.ValidationError error)
        => new Task_Manager.Common.OneOfError<${@Terror}, Task_Manager.Common.ValidationError>(error);
}
"""

$"""
// <auto-generated />

// using's here

namespace Task_Manager.Identity.Application;

public class ${@name}_ValidationErrorFactory
    : Task_Manager.Common.IValidationErrorFactory<Task_Manager.Common.Result<${@TResponse}, Task_Manager.Common.OneOfError<${@Terror}, Task_Manager.Common.ValidationError>>>
{
    public Task_Manager.Common.Result<${@TResponse}, Task_Manager.Common.OneOfError<${@Terror}, Task_Manager.Common.ValidationError>> Create(Task_Manager.Common.ValidationError error)
        => new Task_Manager.Common.OneOfError<${@Terror}, Task_Manager.Common.ValidationError>(error);
}
"""

Example of code which should be generated: https://github.com/tokKurumi/Task-Manager/blob/5ec15cc628bd5d61bd98a10dd7ff6e4306c7fa80/Task%20Manager.Identity.Application/DependencyInjection.cs#L76

GitHub

Task-Manager/Task Manager.Identity.Application/DependencyInjection....

Task Manager. Contribute to tokKurumi/Task-Manager development by creating an account on GitHub.

11 Replies

333fred•5d ago

$ig

MODiX•5d ago

If you want to make an incremental source generator, please make sure to read through both the design document and the cookbook before starting.

SleepWellPupper•4d ago

@kurumi If you see me in vc I can help you out a little.

333fred•4d ago

FWIW, this is extremely out of date, and does not follow any current practices

Unknown User•4d ago

Message Not Public

SleepWellPupper•4d ago

enough I hope

kurumiOP•4d ago

thx @SleepWellPupper, I jump into VC, once u are able. And then once it's done I post the final result here and close this thread We prepared this plan for working // 1. List of handlers from services ! // 2. List of implementations from assembly // 3. Extract TResponse to: T and TError it goes to step 4 // 4. Construct GenericValidationErrorFactory<T, TError> // 5. Services.TryAddSingleton<IValidationErrorFactory<TResponse>, GenericValidationErrorFactory<T, TError>>

SleepWellPupper•4d ago

The plan is to not use SGs for now.

kurumiOP•4d ago

Here is high overview how to achieve this registration: 0. Create generic factory 1. Get all services which implements RequestClassHandlerWrapper<TCommand, Result<T, OneOfError<TError, ValidationError>>> CommandClassHandlerWrapper<TCommand, Result<T, OneOfError<TError, ValidationError>>> 2. Get it's T and TError 3. Register IValidationErrorFactory<Result<T, OneOfError<TError, ValidationError>>> Here is the source code of service scanning This approach makes me able to remove Scrutor package dependency in addition thx to @SleepWellPupper P. S. code is a bit nasty, I gonna improve it soon. But it works

GitHub

Task-Manager/Task Manager.Identity.Application/DependencyInjection....

Task Manager. Contribute to tokKurumi/Task-Manager development by creating an account on GitHub.

SleepWellPupper•4d ago

code looks good, but why do you check for null here? https://github.com/tokKurumi/Task-Manager/blob/6fc37c412dade0b802076ab9b9f9c4e9fdf721ce/Task%20Manager.Identity.Application/DependencyInjection.cs#L107

GitHub

Task-Manager/Task Manager.Identity.Application/DependencyInjection....

Task Manager. Contribute to tokKurumi/Task-Manager development by creating an account on GitHub.

kurumiOP•4d ago

just copilot auto completion, I remove it

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✅ Register services based on Mediator registrated RequestClassHandlerWrapper &CommandClassHandlerWra

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