private TimeSpan UpdateInterval(PollingServiceLoad currentLoad, TimeSpan currentInterval)
{
switch (currentLoad)
{
case PollingServiceLoad.High:
return(_minInterval);
case PollingServiceLoad.Medium:
return(currentInterval);
case PollingServiceLoad.Low:
IPollingServiceOptions options = _options.CurrentValue;
TimeSpan interval = currentInterval + options.PollingIntervalFade;
if (interval > options.MaxPollingInterval)
{
interval = options.MaxPollingInterval;
}
return(interval);
default:
throw new ArgumentOutOfRangeException(nameof(currentLoad));
}
}
private async Task ExecuteCoreAsync(CancellationToken stoppingToken)
{
TimeSpan interval = _minInterval;
while (!stoppingToken.IsCancellationRequested)
{
try
{
PollingServiceLoad serviceLoad = await PollAsync(stoppingToken);
interval = UpdateInterval(serviceLoad, interval);
}
catch (Exception e)
{
Logger.PollFailed(e);
}
if (interval > _minInterval)
{
await Task.Delay(interval, stoppingToken);
}
}
}
