private async Task StartTask()
{
while (true)
{
try
{
try
{
var task = Dequeue();
var value = await task.Task;
if (value == null)
{
return;
}
await Consume(value, _cancellation.Token).ConfigureAwait(false);
if (_isAppInisghtsMetricEnabled)
{
ApplicationInsightsTelemetry.TrackMetric(_metricName, _queue.Count);
}
}
catch (Exception exception)
{
await LogErrorAsync(exception);
}
}
// Saves the loop if nothing didn't help
// ReSharper disable once EmptyGeneralCatchClause
catch
{
}
}
}
private async Task ThreadMethod(CancellationToken cancellation)
{
while (!cancellation.IsCancellationRequested)
{
try
{
if (_isTelemetryDisabled)
{
try
{
await Execute(cancellation).ConfigureAwait(false);
}
catch (Exception exception)
{
LogFatalError(exception);
}
}
else
{
var telemtryOperation = ApplicationInsightsTelemetry.StartRequestOperation($"{nameof(TimerPeriod)} on {_typeName} for {_componentName}");
try
{
await Execute(cancellation).ConfigureAwait(false);
}
catch (Exception exception)
{
LogFatalError(exception);
ApplicationInsightsTelemetry.MarkFailedOperation(telemtryOperation);
ApplicationInsightsTelemetry.TrackException(exception);
}
finally
{
ApplicationInsightsTelemetry.StopOperation(telemtryOperation);
}
}
try
{
await Task.Delay(_periodMs, cancellation).ConfigureAwait(false);
}
catch (TaskCanceledException)
{
}
}
// Saves the loop if nothing didn't help
// ReSharper disable once EmptyGeneralCatchClause
catch
{
}
}
}
/// <summary>
/// Produces next item. If producer-consumer is not started yet, then it will be started automatically
/// </summary>
protected void Produce(T item)
{
Start();
lock (_queue)
{
var last = _last;
_last = new TaskCompletionSource <T>();
_queue.Enqueue(_last);
if (_isAppInisghtsMetricEnabled)
{
ApplicationInsightsTelemetry.TrackMetric(_metricName, _queue.Count);
}
last.SetResult(item);
}
}
