public async Task <TResponse> Handle(TRequest request, CancellationToken cancellationToken,
MediatR.RequestHandlerDelegate <TResponse> next)
{
var name = typeof(TRequest).Name;
TResponse response;
_logger.LogInformation("{Name} handler started. [Guid:{RequestGuid}][CorrelationId:{CorrelationId}]",
name, request.RequestGuid, request.CorrelationId);
try
{
response = await next();
}
catch (CommandValidationException)
{
_logger.LogWarning("{Name} handler validation failed. [{RequestGuid}][CorrelationId:{CorrelationId}]",
name, request.RequestGuid, request.CorrelationId);
throw;
}
catch
{
_logger.LogError("{Name} handler failed with exception. [{RequestGuid}][CorrelationId:{CorrelationId}]",
name, request.RequestGuid, request.CorrelationId);
throw;
}
_logger.LogInformation("{Name} handler finished. [{RequestGuid}][CorrelationId:{CorrelationId}]",
name, request.RequestGuid, request.CorrelationId);
return(response);
}
Handle(TRequest request,
System.Threading.CancellationToken cancellationToken,
MediatR.RequestHandlerDelegate <TResponse> next)
{
if (Validators.Any())
{
var context =
new FluentValidation.ValidationContext <TRequest>(request);
var validationResults =
await System.Threading.Tasks.Task.WhenAll
(Validators.Select(v => v.ValidateAsync(context, cancellationToken)));
var failures =
validationResults
.SelectMany(current => current.Errors)
.Where(current => current != null)
.ToList()
;
if (failures.Count != 0)
{
throw new FluentValidation.ValidationException(errors: failures);
}
}
return(await next());
}