public void HistogramWithOnlySumCount()
{
var boundaries = new double[] { };
var histogramPoint = new MetricPoint(AggregationType.HistogramSumCount, DateTimeOffset.Now, null, null, boundaries);
histogramPoint.Update(-10);
histogramPoint.Update(0);
histogramPoint.Update(1);
histogramPoint.Update(9);
histogramPoint.Update(10);
histogramPoint.Update(11);
histogramPoint.Update(19);
histogramPoint.TakeSnapshot(true);
var count = histogramPoint.GetHistogramCount();
var sum = histogramPoint.GetHistogramSum();
// Sum of all recordings
Assert.Equal(40, sum);
// Count = # of recordings
Assert.Equal(7, count);
// There should be no enumeration of BucketCounts and ExplicitBounds for HistogramSumCount
var enumerator = histogramPoint.GetHistogramBuckets().GetEnumerator();
Assert.False(enumerator.MoveNext());
}
public void HistogramDistributeToAllBucketsCustom()
{
var boundaries = new double[] { 10, 20 };
var histogramPoint = new MetricPoint(AggregationType.Histogram, DateTimeOffset.Now, null, null, boundaries);
// 5 recordings <=10
histogramPoint.Update(-10);
histogramPoint.Update(0);
histogramPoint.Update(1);
histogramPoint.Update(9);
histogramPoint.Update(10);
// 2 recordings >10, <=20
histogramPoint.Update(11);
histogramPoint.Update(19);
histogramPoint.TakeSnapshot(true);
var count = histogramPoint.GetHistogramCount();
var sum = histogramPoint.GetHistogramSum();
// Sum of all recordings
Assert.Equal(40, sum);
// Count = # of recordings
Assert.Equal(7, count);
int index = 0;
int actualCount = 0;
var expectedBucketCounts = new long[] { 5, 2, 0 };
foreach (var histogramMeasurement in histogramPoint.GetHistogramBuckets())
{
Assert.Equal(expectedBucketCounts[index], histogramMeasurement.BucketCount);
index++;
actualCount++;
}
Assert.Equal(boundaries.Length + 1, actualCount);
}
public void HistogramDistributeToAllBucketsDefault()
{
var histogramPoint = new MetricPoint(AggregationType.Histogram, DateTimeOffset.Now, null, null, Metric.DefaultHistogramBounds);
histogramPoint.Update(-1);
histogramPoint.Update(0);
histogramPoint.Update(2);
histogramPoint.Update(5);
histogramPoint.Update(8);
histogramPoint.Update(10);
histogramPoint.Update(11);
histogramPoint.Update(25);
histogramPoint.Update(40);
histogramPoint.Update(50);
histogramPoint.Update(70);
histogramPoint.Update(75);
histogramPoint.Update(99);
histogramPoint.Update(100);
histogramPoint.Update(246);
histogramPoint.Update(250);
histogramPoint.Update(499);
histogramPoint.Update(500);
histogramPoint.Update(999);
histogramPoint.Update(1000);
histogramPoint.Update(1001);
histogramPoint.Update(10000000);
histogramPoint.TakeSnapshot(true);
var count = histogramPoint.GetHistogramCount();
Assert.Equal(22, count);
int actualCount = 0;
foreach (var histogramMeasurement in histogramPoint.GetHistogramBuckets())
{
Assert.Equal(2, histogramMeasurement.BucketCount);
actualCount++;
}
}
public MetricsData(int version, Metric metric, MetricPoint metricPoint) : base(version)
{
if (metric == null)
{
throw new ArgumentNullException(nameof(metric));
}
IList <MetricDataPoint> metricDataPoints = new List <MetricDataPoint>();
MetricDataPoint metricDataPoint = null;
switch (metric.MetricType)
{
case MetricType.DoubleSum:
metricDataPoint = new MetricDataPoint(metric.Name, metricPoint.GetSumDouble())
{
DataPointType = DataPointType.Aggregation
};
break;
case MetricType.DoubleGauge:
metricDataPoint = new MetricDataPoint(metric.Name, metricPoint.GetGaugeLastValueDouble())
{
DataPointType = DataPointType.Measurement
};
break;
case MetricType.LongSum:
// potential for minor precision loss implicitly going from long->double
// see: https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/numeric-conversions#implicit-numeric-conversions
metricDataPoint = new MetricDataPoint(metric.Name, metricPoint.GetSumLong())
{
DataPointType = DataPointType.Aggregation
};
break;
case MetricType.LongGauge:
// potential for minor precision loss implicitly going from long->double
// see: https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/numeric-conversions#implicit-numeric-conversions
metricDataPoint = new MetricDataPoint(metric.Name, metricPoint.GetGaugeLastValueLong())
{
DataPointType = DataPointType.Measurement
};
break;
case MetricType.Histogram:
metricDataPoint = new MetricDataPoint(metric.Name, metricPoint.GetHistogramSum());
metricDataPoint.DataPointType = DataPointType.Aggregation;
long histogramCount = metricPoint.GetHistogramCount();
// Current schema only supports int values for count
// if the value is within integer range we will use it otherwise ignore it.
metricDataPoint.Count = (histogramCount <= int.MaxValue && histogramCount >= int.MinValue) ? (int?)histogramCount : null;
break;
}
metricDataPoints.Add(metricDataPoint);
Metrics = metricDataPoints;
Properties = new ChangeTrackingDictionary <string, string>();
foreach (var tag in metricPoint.Tags)
{
if (tag.Key.Length <= SchemaConstants.MetricsData_Properties_MaxKeyLength && tag.Value != null)
{
// Note: if Key exceeds MaxLength or if Value is null, the entire KVP will be dropped.
Properties.Add(new KeyValuePair <string, string>(tag.Key, tag.Value.ToString().Truncate(SchemaConstants.MetricsData_Properties_MaxValueLength)));
}
}
Properties.Add(AggregationIntervalMsKey, DefaultExportIntervalMilliseconds);
}
