public async Task <FindNextPrimeCommandResult> Handle(FindNextPrimeCommand request, CancellationToken cancellationToken)
{
var primeLink = await _primeLinkRepository.GetPrimeLinkbyNumberAsync(request.Number);
var result = new FindNextPrimeCommandResult();
if (primeLink == null ||
primeLink.CalculationStatus == CalculationStatus.Failed)
{
try
{
if (primeLink == null)
{
await _primeLinkRepository.StartNewPrimeLinkCalculationAsync(request.Number);
}
var scienceRequestData = new PrimeCalculationRequest
{
Number = request.Number
};
var scienceReply = await UseScienceInterface("FindNextPrime", scienceRequestData.ToByteArray(), cancellationToken);
var scienceResult = NextPrimeResponse.Parser.ParseFrom(scienceReply.RawBytes);
await _primeLinkRepository.UpdatePrimeLinkAsync(new Models.PrimeLinkModel
{
Number = request.Number,
CalculationStatus = CalculationStatus.Done,
NextPrime = scienceResult.NextPrime
});
result.NextPrime = scienceResult.NextPrime;
}
catch (TaskCanceledException taskCanceledException)
{
_loggingManager.LogFatal(taskCanceledException.Message);
await _primeLinkRepository.UpdatePrimeLinkAsync(new Models.PrimeLinkModel
{
Number = request.Number,
CalculationStatus = CalculationStatus.Failed,
});
throw;
}
catch (Exception exception)
{
_loggingManager.LogError(exception.Message);
await _primeLinkRepository.UpdatePrimeLinkAsync(new Models.PrimeLinkModel
{
Number = request.Number,
CalculationStatus = CalculationStatus.Unknown,
});
throw;
}
}
else if (primeLink.CalculationStatus == CalculationStatus.Done)
{
result.NextPrime = primeLink.NextPrime;
}
else if (primeLink.CalculationStatus == CalculationStatus.InProgress)
{
//TODO: refactor to appsettings
//TODO: use polly for timeout policy
TimeSpan checkTime = TimeSpan.FromMinutes(0.25);
while (true)
{
await Task.Delay(checkTime, cancellationToken);
var currentState = await _primeLinkRepository.GetPrimeLinkbyNumberAsync(request.Number);
if (currentState.CalculationStatus == CalculationStatus.Done)
{
result.NextPrime = currentState.NextPrime;
break;
}
}
}
else
{
throw new Exception("Something went wrong please contact support.");
}
return(result);
}
public async Task <PrimeLinkModel> Handle(GetPrimeLinkByNumberQuery request, CancellationToken cancellationToken)
{
var primeLink = await _primeLinkRepository.GetPrimeLinkbyNumberAsync(request.Number);
return(primeLink ?? _mapper.Map <PrimeLinkModel>(primeLink));
}
