ExceptionToProblemDetails.Generator 1.4.2

Versions

• 1.4.2 - the MapToProblemDetails attribute could be placed on base class

• 1.4 - introduced attribute ExceptionMapClass

• 1.2 - removed reference to Microsoft.AspNetCore.Mvc.Core

In English - bellow

Motyvacija

Susieti OPEN API dokumentaciją su standartizuotų klaidų apdorojimu ProblemDetails.

Pastaba - turi būti kartu naudojamas su kokiu nors ProblemDetails paketu, pvz.:

• Opw.HttpExceptions.AspNetCore

• Hellang.Middleware.ProblemDetails

Naudojimas

1. Prisidėti paketą package

Install-Package ExceptionToProblemDetails

.NET Core command line interface:

dotnet add package ExceptionToProblemDetails

2. Prisidėti source code generatoriaus paketą package

Install-Package ExceptionToProblemDetails.Generator

.NET Core command line interface:

dotnet add package ExceptionToProblemDetails.Generator

3. Susikurti partial klasę ir dekoruoti ją atributu [ExceptionMapClass], kuri užregistruos middleware Exception mapper

Žemiau pateiktas pavyzdys, registruojantis Hellang.Middleware.ProblemDetails middleware

[ExceptionMapClass]
public partial class ExceptionToProblemDetailsMap
{
    private readonly ProblemDetailsOptions options;

    public ExceptionToProblemDetailsMap(ProblemDetailsOptions options)
    {
        this.options = options;
    }

    partial void MapConverter<TConverter, TException, TProblemDetails>(int statusCode, ExceptionToProblemDetails.ControllerActionDefinition actionDefinition) where TConverter : ExceptionToProblemDetails.IExceptionToProblemDetailsConverter<TException, TProblemDetails> where TException : System.Exception where TProblemDetails : Microsoft.AspNetCore.Mvc.ProblemDetails
    {
        var converter = Activator.CreateInstance<TConverter>();
        options.Map<TException>((context, exception)=>actionDefinition.MatchRoute(context.Request.RouteValues), 
            (context, exception) => converter.Convert(exception, statusCode));
    }
}

4. Dekoruoti controller klasės arba action metodus atributu [MapToProblemDetails]

[HttpGet("{location}")]
[ProducesResponseType(typeof(IEnumerable<WeatherForecast> ),StatusCodes.Status200OK )]
[MapToProblemDetails(StatusCodes.Status404NotFound, ExceptionType = typeof(NotFoundException))]
public IEnumerable<WeatherForecast> Get(string location)
{

Source generatorius sugeneruos 3 žingsnyje apsirašytos partial klasės iškvietimus

5. Naudojant jums patinkantį ProblemDetails middleware užregistruoti Exception mapper

builder.Services.AddProblemDetails(options =>
{
    new ExceptionToProblemDetailsMap(options).Map();
    options.IncludeExceptionDetails = (context, exception) => false;
});

Pavyzdžiai pateikti pavyzdiniai projektai

<a id="Motivation"></a>

Motivation

Tie the Open API documentation to standardized error handling with ProblemDetails.

Note - Must be used along with a ProblemDetails package such as:

• [Opw.HttpExceptions.AspNetCore] (https://www.nuget.org/packages/Opw.HttpExceptions.AspNetCore/)

• [Hellang.Middleware.ProblemDetails] (https://www.nuget.org/packages/Hellang.Middleware.ProblemDetails/)

Usage

1. Add the package

Install-Package ExceptionToProblemDetails

.NET Core command line interface:

dotnet add package ExceptionToProblemDetails

2. Add the source code generator package

Install-Package ExceptionToProblemDetails.Generator

.NET Core command line interface:

dotnet add package ExceptionToProblemDetails.Generator

3. Create a partial class and decorate it with attribute [ExceptionMapClass], which will register the Exception mapper middleware

Below is an example registering the Hellang.Middleware.ProblemDetails middleware.

[ExceptionMapClass]
public partial class ExceptionToProblemDetailsMap
{
    private readonly ProblemDetailsOptions options;

    public ExceptionToProblemDetailsMap(ProblemDetailsOptions options)
    {
        this.options = options;
    }

    partial void MapConverter<TConverter, TException, TProblemDetails>(int statusCode, ExceptionToProblemDetails.ControllerActionDefinition actionDefinition) where TConverter : ExceptionToProblemDetails.IExceptionToProblemDetailsConverter<TException, TProblemDetails> where TException : System.Exception where TProblemDetails : Microsoft.AspNetCore.Mvc.ProblemDetails
    {
        var converter = Activator.CreateInstance<TConverter>();
        options.Map<TException>((context, exception)=>actionDefinition.MatchRoute(context.Request.RouteValues), 
            (context, exception) => converter.Convert(exception, statusCode));
    }
}

4. Decorate the controller class or action methods with the [MapToProblemDetails] attribute.

[HttpGet("{location}")]
[ProducesResponseType(typeof(IEnumerable<WeatherForecast> ),StatusCodes.Status200OK )]
[MapToProblemDetails(StatusCodes.Status404NotFound, ExceptionType = typeof(NotFoundException))]
public IEnumerable<WeatherForecast> Get(string location)
{

The source generator will generate the calls described in step 3.

5. Using your preferred ProblemDetails middleware, register the Exception mapper.

builder.Services.AddProblemDetails(options =>
{
    new ExceptionToProblemDetailsMap(options).Map();
    options.IncludeExceptionDetails = (context, exception) => false;
});

Examples can be found in the sample project