ServiceStack ErrorResponseFactory

gistfile1.cs

 public interface IErrorResponseFactory
 {
  object CreateErrorResponse<TRequest>(TRequest request, Exception ex, ResponseStatus responseStatus);
  object CreateErrorResponse<TRequest>(TRequest request, ValidationErrorResult validationError);
 }


 public class ErrorResponseFactory : IErrorResponseFactory
 {
  public object CreateErrorResponse<TRequest>(TRequest request, ValidationErrorResult validationError)
  {
   var responseStatus = ResponseStatusTranslator.Instance.Parse(validationError);

   var errorResponse = CreateErrorResponse(request, new ValidationError(validationError), responseStatus);

   return errorResponse;
  }

  public object CreateErrorResponse<TRequest>(TRequest request, Exception ex, ResponseStatus responseStatus)
  {
   var responseDto = CreateResponseDto(responseStatus);

   var httpError = ex as IHttpError;
   if (httpError != null)
   {
    if (responseDto != null)
     httpError.Response = responseDto;

    return httpError;
   }

   var errorCode = ex.GetType().Name;
   var errorMsg = ex.Message;
   if (responseStatus != null)
   {
    errorCode = responseStatus.ErrorCode ?? errorCode;
    errorMsg = responseStatus.Message ?? errorMsg;
   }

   return new HttpError(responseDto, ex.ToStatusCode(), errorCode, errorMsg);
  }

  private static object CreateResponseDto(ResponseStatus responseStatus)
  {
   return new ErrorResponse { ResponseStatus = responseStatus };
  }
 }