public async Task <ReportActivityResult> ExecuteAsync(ReportActivity command, CancellationToken cancellationToken) { await repository.SetServiceLastActiveAsync(command.LastActiveUtc, cancellationToken); TimeSpan expirationQuanta = await repository.GetExpirationQuantaAsync(cancellationToken); return(new ReportActivityResult(TimeSpan.FromMilliseconds(expirationQuanta.TotalMilliseconds / 3))); }
public async Task <OccupyResponse> OccupyAsync(OccupyRequest request) { var result = await _context.OccupyAsync(new OccupyInstance(this.GetActorId().GetGuidId(), request.PartitionId, request.ServiceInstanceName), _cancellation); //calculate a seed value to the nearest 100ms to stagger the due time of the different actors. //this prevents from all actors occupied within milliseconds of each other from all vacating at exactly the same time //which will cause a deadlock on the pool actor. var expirationQuanta = await _repository.GetExpirationQuantaAsync(_cancellation); var intervalMs = (int)Math.Round(expirationQuanta.TotalMilliseconds / 5); var dueMs = ((int)Math.Round((GetInstanceId().GetHashCode() % 1000) / 100.0) * 100) + intervalMs; await RegisterReminderAsync("expiration-quanta", null, TimeSpan.FromMilliseconds(dueMs), TimeSpan.FromMilliseconds(intervalMs)); return(new OccupyResponse(result.ServiceName)); }
public async Task ExecuteAsync(CheckForExpiration command, CancellationToken cancellationToken) { var expirationQuanta = await repository.GetExpirationQuantaAsync(cancellationToken); var lastActive = await repository.GetServiceLastActiveAsync(cancellationToken); var inactivityPeriod = command.AsOfDate.Subtract(lastActive); if (inactivityPeriod > expirationQuanta) { string instanceName = await repository.TryGetServiceInstanceNameAsync(cancellationToken); string partitionId = await repository.GetPartitionIdAsync(cancellationToken); string serviceTypeUri = await repository.GetServiceTypeUriAsync(cancellationToken); await partitions.VacateInstanceAsync(partitionId, serviceTypeUri, instanceName, command.InstanceId); } }