public Task MonitoredPropertiesProcessorAsync()
{
DateTime nextSendTime = DateTime.UtcNow + TimeSpan.FromSeconds(_defaultSendIntervalSeconds);
double millisecondsTillNextSend = nextSendTime.Subtract(DateTime.UtcNow).TotalMilliseconds;
while (!_shutdownToken.IsCancellationRequested)
{
try
{
// sanity check the send interval, compute the timeout and get the next monitored item message
if (_defaultSendIntervalSeconds > 0)
{
millisecondsTillNextSend = nextSendTime.Subtract(DateTime.UtcNow).TotalMilliseconds;
if (millisecondsTillNextSend < 0)
{
// do not wait if we missed the send interval
millisecondsTillNextSend = 0;
}
}
else
{
// if we are in shutdown do not wait, else wait infinite if send interval is not set
millisecondsTillNextSend = _shutdownToken.IsCancellationRequested ? 0 : Timeout.Infinite;
}
var gotItem = _monitoredPropertiesDataQueue.TryTake(out var messageData, (int)millisecondsTillNextSend, _shutdownToken);
if (!gotItem || messageData == null)
{
continue;
}
_hubClient.SendPropertyAsync(messageData, _shutdownToken).GetAwaiter().GetResult();
SentProperties++;
}
catch (Exception e)
{
_logger.Error(e, "Error while processing monitored properties.");
}
}
return(Task.CompletedTask);
}
