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);
}
