public async Task <TResponse> Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate <TResponse> next)
{
try
{
// Pre Validation
await PreValidation(request);
// Post Validation
// Create data layer transaction
await using var transaction = await _dataLayer.Database.BeginTransactionAsync(cancellationToken);
// Pre Handler
_response = await next();
// Post Handler
// Commit data layer transaction
await transaction.CommitAsync(cancellationToken);
await PostHandler(request);
return(_response);
}
catch (Exception e)
{
_dataLayer.RollBack();
var responseInstance = Activator.CreateInstance(next.GetType().GenericTypeArguments[0]);
responseInstance?.GetType().GetProperty("Message")?
.SetValue(responseInstance, $"Error: {e.Message};", null);
if (e.InnerException != null)
{
responseInstance?.GetType().GetProperty("Message")?
.SetValue(responseInstance, $"{responseInstance?.GetType().GetProperty("Message")?.GetValue(responseInstance)} Inner Exception: {e.InnerException?.Message}", null);
}
responseInstance?.GetType().GetProperty("HttpStatusCode")?
.SetValue(responseInstance, HttpStatusCode.InternalServerError, null);
return((TResponse)responseInstance);
}
}
public async Task <TResponse> Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate <TResponse> next)
{
try
{
// Pre Validation
await PreValidation(request);
// Post Validation
// Pre Handler
_response = await next();
// Post Handler
await PostHandler(request);
return(_response);
}
catch (Exception e)
{
var responseInstance = Activator.CreateInstance(next.GetType().GenericTypeArguments[0]);
responseInstance?.GetType().GetProperty("Message")?
.SetValue(responseInstance, $"Error: {e.Message};", null);
if (e.InnerException != null)
{
responseInstance?.GetType().GetProperty("Message")?
.SetValue(responseInstance, $"{responseInstance?.GetType().GetProperty("Message")?.GetValue(responseInstance)} Inner Exception: {e.InnerException?.Message}", null);
}
responseInstance?.GetType().GetProperty("HttpStatusCode")?
.SetValue(responseInstance, HttpStatusCode.InternalServerError, null);
return((TResponse)responseInstance);
}
}
public async Task <TResponse> Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate <TResponse> next)
{
Log.Debug($"-- Handling request: {request.GetType()} | Awaiting response: {next.GetType()}");
var response = await next();
Log.Debug($"-- Finished request: {request.GetType()}");
return(response);
}