private static async Task WriteResponse(HttpContext context)
{
_context = context;
var exceptionDetails = context.Features.Get <IExceptionHandlerFeature>();
var ex = exceptionDetails?.Error;
if (ex != null)
{
context.Response.ContentType = "application/problem+json";
_problemDetailsFactory = context?.RequestServices?.GetRequiredService <ProblemDetailsFactory>();
ProblemDetails problemDetails = ex switch
{
CustomExceptionBase customException => HandleProblemDetails(customException),
ValidationExceptionBase validationException => HandleValidationProblemDetails(validationException),
_ => HandleDefault(ex),
};
var stream = _context.Response.Body;
if (problemDetails is ValidationProblemDetails validationProblemDetails)
{
await JsonSerializer.SerializeAsync(stream, validationProblemDetails);
}
else
{
await JsonSerializer.SerializeAsync(stream, problemDetails);
}
}
}
private static ValidationProblemDetails HandleValidationProblemDetails(ValidationExceptionBase ex)
{
_context.Response.StatusCode = (int)ex.StatusCode;
var modelStateDictionary = new ModelStateDictionary();
modelStateDictionary.AddModelError(ex.Property, ex.Message);
var problemDetails = _problemDetailsFactory.CreateValidationProblemDetails(
_context,
statusCode: (int)ex.StatusCode,
detail: _includeStackTrace ? ex.ToString() : ex.Message,
modelStateDictionary: modelStateDictionary
);
return(problemDetails);
}