public async Task <ErrorDetails> GenerateAsync(Exception exception)
{
var errorDetailContext = new ErrorDetailContext
{
Exception = exception,
TargetSite = exception.TargetSite
};
await ProcessAsync(errorDetailContext);
var errorDetails = new ErrorDetails(
errorDetailContext.Exception.GetType().Name,
errorDetailContext.Message,
errorDetailContext.Code,
GetMemberName(errorDetailContext.TargetSite));
if (_errorDetailsOptions.Value.InnerErrorsFromInnerExceptions)
{
foreach (var innerException in errorDetailContext.InnerExceptions)
{
var innerError = await GenerateAsync(innerException);
errorDetails.InnerErrors.Add(innerError);
}
}
if (_errorDetailsOptions.Value.StackTraceProcessing)
{
var stackTrace = new StackTrace(exception, false);
var stackFrames = stackTrace.GetFrames();
foreach (var stackFrame in stackFrames)
{
var stackFrameErrorDetail = new ErrorDetailContext
{
TargetSite = stackFrame.GetMethod()
};
await ProcessAsync(stackFrameErrorDetail);
if (_errorDetailsOptions.Value.UnspecificyErrorMessages ||
stackFrameErrorDetail.Message != null)
{
var errorMessageValue = stackFrameErrorDetail.Message;
var errorMessageCode = stackFrameErrorDetail.Code;
var errorMessageFirstMember = stackFrameErrorDetail.Members
.FirstOrDefault(x => x.DeclaringType?.IsInterface == false);
var errorMessage = new ErrorMessage(
errorMessageValue,
errorMessageCode,
GetMemberName(errorMessageFirstMember));
errorDetails.SecondaryMessages.Add(errorMessage);
}
}
}
return(errorDetails);
}
private async Task ProcessAsync(ErrorDetailContext context)
{
var errorDetailContext = context;
var errorFilters = _errorDetailFilterProvider.GetAll()
.Reverse()
.ToArray();
Func <Task> errorFilterTask = () => Task.CompletedTask;
foreach (var errorFilter in errorFilters)
{
errorFilterTask = ExecuteFilterAsync(
errorFilter,
errorDetailContext,
errorFilterTask);
}
await errorFilterTask();
}
private static Func <Task> ExecuteFilterAsync(IErrorDetailFilter filter, ErrorDetailContext context, Func <Task> nextFilterTask)
{
return(() => filter.OnProcessingAsync(context, nextFilterTask));
}
