public void Tick(int add = 1)
{
MeterAggregator currAggregator = _aggregator;
if (currAggregator != null)
{
currAggregator.Tick(add);
}
}
public Meter(string name, ITelemetrySink[] sinks, TimeSpan?aggregationPeriod = null, Int32 historyKeep = 30, IDictionary <string, string> properties = null)
{
if (aggregationPeriod == TimeSpan.Zero)
{
throw new ArgumentException("Aggregation Period can't be zero", "aggregationPeriod");
}
_aggregationPeriod = aggregationPeriod ?? TimeSpan.FromSeconds(60);
this.Name = name ?? "null";
this._aggregator = new MeterAggregator(DateTimeOffset.UtcNow);
this._sinks = sinks ?? throw new ArgumentNullException(nameof(sinks));
this._historyCount = historyKeep;
this._properties = properties;
Task.Run(this.AggregatorLoopAsync);
}
public MeterDataPoint(MeterAggregator agg, TimeSpan period)
{
this.Count = agg.Count;
this.StartTimestamp = agg.StartTimestamp;
this.Period = period;
}
void IDisposable.Dispose()
{
_isDisposed = true;
_aggregator = null;
}
private async Task AggregatorLoopAsync()
{
while (_isDisposed == false)
{
try
{
// Wait for end end of the aggregation period:
await Task.Delay(_aggregationPeriod).ConfigureAwait(continueOnCapturedContext: false);
if (_isDisposed)
{
break;
}
// Atomically snap the current aggregation:
MeterAggregator nextAggregator = new MeterAggregator(DateTimeOffset.UtcNow);
if (_aggregator == null)
{
_aggregator = nextAggregator;
continue;
}
MeterAggregator prevAggregator = Interlocked.Exchange(ref _aggregator, nextAggregator);
// Only send anything if at least one value was measured:
if (prevAggregator != null)
{
// Compute the actual aggregation period length:
TimeSpan aggPeriod = nextAggregator.StartTimestamp - prevAggregator.StartTimestamp;
History.AddFirst(new MeterDataPoint(prevAggregator, aggPeriod));
if (History.Count > _historyCount)
{
for (var i = 0; i < History.Count - _historyCount; i++)
{
History.RemoveLast();
}
}
//don't report empty meters
if (aggPeriod.TotalMilliseconds > 0 && prevAggregator.Count > 0)
{
foreach (var sink in _sinks)
{
try
{
sink.TrackMeter(
Name,
prevAggregator.Count,
aggPeriod,
prevAggregator.StartTimestamp,
_properties
);
}catch (Exception ex)
{
}
}
}
}
}
catch (Exception ex)
{
}
}
}
