private void OnExecutionException(Exception exception)
{
ExecutionException?.Invoke(this, new EventArgs <Exception>(exception));
}
internal async Task StartSubscribe()
{
var reader = TaskQueueReader;
SubscriberStarted?.Invoke(this);
while (true)
{
T newPayload;
try
{
newPayload = await reader.ReadAsync(TaskManagerCancellationToken.Token).ConfigureAwait(false);
}
catch (OperationCanceledException)
{
break;
}
catch (Exception e)
{
TaskPayloadFetchException?.Invoke(this, e);
continue;
}
var cts = TaskManagerCancellationToken;
CancellationTokenSource localCts = null;
var timeout = ExecutionTimeout;
if (timeout.HasValue)
{
localCts = new CancellationTokenSource(timeout.Value);
cts = CancellationTokenSource.CreateLinkedTokenSource(
TaskManagerCancellationToken.Token,
localCts.Token);
}
try
{
ExecutionStarting?.Invoke(this);
await Execution(newPayload, cts).ConfigureAwait(false);
ExecutionFinished?.Invoke(this);
}
catch (OperationCanceledException ex)
{
if (localCts?.IsCancellationRequested ?? false)
{
ExecutionTimeoutEvent?.Invoke(this);
}
else
{
SubscriberCancelled?.Invoke(this, ex);
break;
}
}
catch (ObjectDisposedException ed)
{
SubscriberCancelled?.Invoke(this, ed);
break;
}
catch (Exception e)
{
ExecutionException?.Invoke(this, e);
}
if (TaskManagerCancellationToken.IsCancellationRequested)
{
break;
}
}
TaskSubscriberFinalized?.Invoke(this);
}