func()

in exporter/collector/metrics.go [1532:1576]

• 45 lines of code
• 2 McCabe index (conditional complexity)

func (m *metricMapper) summaryMetricDescriptors(
	pm pmetric.Metric,
	extraLabels labels,
) []*metricpb.MetricDescriptor {
	sumType, countType, quantileType, err := m.summaryMetricTypes(pm)
	if err != nil {
		m.obs.log.Debug("Failed to get metric types (i.e. names) for summary metric. Dropping the metric.", zap.Error(err), zap.Any("metric", pm))
		return nil
	}
	labels := m.labelDescriptors(pm, extraLabels)
	return []*metricpb.MetricDescriptor{
		{
			Type:        sumType,
			Labels:      labels,
			MetricKind:  metricpb.MetricDescriptor_CUMULATIVE,
			ValueType:   metricpb.MetricDescriptor_DOUBLE,
			Unit:        pm.Unit(),
			Description: pm.Description(),
			DisplayName: pm.Name() + SummarySumSuffix,
		},
		{
			Type:        countType,
			Labels:      labels,
			MetricKind:  metricpb.MetricDescriptor_CUMULATIVE,
			ValueType:   metricpb.MetricDescriptor_DOUBLE,
			Unit:        pm.Unit(),
			Description: pm.Description(),
			DisplayName: pm.Name() + SummaryCountPrefix,
		},
		{
			Type: quantileType,
			Labels: append(
				labels,
				&label.LabelDescriptor{
					Key:         "quantile",
					Description: "the value at a given quantile of a distribution",
				}),
			MetricKind:  metricpb.MetricDescriptor_GAUGE,
			ValueType:   metricpb.MetricDescriptor_DOUBLE,
			Unit:        pm.Unit(),
			Description: pm.Description(),
			DisplayName: pm.Name(),
		},
	}
}