public async Task <ServiceResult <GetWidgetResponseDto> > GetWidgetAsync(GetWidgetRequestDto request, CancellationToken cancellationToken)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (string.IsNullOrEmpty(request.Id))
{
return(ServiceResult.Failure(ExampleApiErrors.CreateInvalidRequestMissingWidgetId()));
}
var widget = await m_repository.TryGetWidgetAsync(request.Id, cancellationToken).ConfigureAwait(false);
if (widget == null)
{
return(ServiceResult.Failure(ExampleApiErrors.CreateNotFoundWidget(request.Id)));
}
string eTag = CreateWidgetETag(widget);
if (request.IfNoneMatch == eTag)
{
return(ServiceResult.Success(new GetWidgetResponseDto {
NotModified = true, ETag = eTag
}));
}
return(ServiceResult.Success(new GetWidgetResponseDto {
Widget = widget, ETag = eTag
}));
}
public static Task <ServiceResult <GetWidgetResponseDto> > GetWidgetAsync(this IExampleApi service, string id, CancellationToken cancellationToken = default(CancellationToken))
{
var request = new GetWidgetRequestDto {
Id = id
};
return(service.GetWidgetAsync(request, cancellationToken));
}
