示例#1
0
        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);
        }