public void TrackValue(double value)
{
LightMetricAggregator currAggregator = _aggregator;
if (currAggregator != null)
{
currAggregator.TrackValue(value);
}
}
/// <summary>
/// This method was separated because will be invoked for LighTelemetry.
/// When the method 'EndAggregation' is called, the method above will send all data aggregated to AppInsights
/// </summary>
public void SendAggregationMetrics()
{
try
{
/// Atomically snap the current aggregation:
LightMetricAggregator nextAggregator = new LightMetricAggregator(DateTimeOffset.UtcNow);
LightMetricAggregator prevAggregator = Interlocked.Exchange(ref _aggregator, nextAggregator);
/// Only send anything is at least one value was measured:
if (prevAggregator != null && prevAggregator.Count > 0)
{
/// Compute the actual aggregation period length:
TimeSpan aggPeriod = nextAggregator.StartTimestamp - prevAggregator.StartTimestamp;
if (aggPeriod.TotalMilliseconds < 1)
{
/// Just if the timestamp is smaller than one second, we send to appinsights the milliseconds
aggPeriod = TimeSpan.FromMilliseconds(1);
}
/// Construct the metric telemetry item and send to AppInsights
var aggregatedMetricTelemetry = new MetricTelemetry(
Name,
prevAggregator.Count,
prevAggregator.Sum,
prevAggregator.Min,
prevAggregator.Max,
prevAggregator.StandardDeviation);
aggregatedMetricTelemetry.Properties["AggregationPeriod"] = aggPeriod.ToString("c");
///Send aggregated data to AppInsights
_telemetry.TrackAggregateMetric(aggregatedMetricTelemetry);
}
}
catch (Exception ex)
{
///There are some erros AppInsights will be notified.
this._telemetry.TrackException(ex);
}
}
///Constructor responsible for picking up the metric name and instantiating a LightMetricAggregator.
public LightMetric(string name)
{
this.Name = name ?? "null";
this._aggregator = new LightMetricAggregator(DateTimeOffset.UtcNow);
}
