public async Task QueueLenghtReported(int length)
{
await semaphore.WaitAsync().ConfigureAwait(false);
try
{
if (length > maxLength && tokenSource != null)
{
log.Info($"Stopping sending messages to {destination} as the current queue length ({length}) is over the defined threshold ({maxLength}).");
tokenSource.Cancel();
try
{
await generationTask.ConfigureAwait(false);
}
catch (OperationCanceledException)
{
//Ignore
}
catch (Exception e)
{
log.Error("Error stopping generating of messages", e);
}
tokenSource.Dispose();
tokenSource = null;
generationTask = null;
return;
}
if (length < minLength && tokenSource == null)
{
log.Info($"Starting sending messages to {destination} as the current queue length ({length}) is under the defined threshold ({minLength}).");
tokenSource = new CancellationTokenSource();
generationTask = Task.Run(() => generateMessages(destination, tokenSource.Token), tokenSource.Token);
}
}
finally
{
semaphore.Release();
}
}
public void Begin()
{
_log.Info("UoW begin");
}