func()

in otelcollector/prometheusreceiver/internal/starttimemetricadjuster.go [128:159]

• 30 lines of code
• 10 McCabe index (conditional complexity)

func (stma *startTimeMetricAdjuster) getStartTime(metrics pmetric.Metrics) (float64, error) {
	for i := 0; i < metrics.ResourceMetrics().Len(); i++ {
		rm := metrics.ResourceMetrics().At(i)
		for j := 0; j < rm.ScopeMetrics().Len(); j++ {
			ilm := rm.ScopeMetrics().At(j)
			for k := 0; k < ilm.Metrics().Len(); k++ {
				metric := ilm.Metrics().At(k)
				if stma.matchStartTimeMetric(metric.Name()) {
					switch metric.Type() {
					case pmetric.MetricTypeGauge:
						if metric.Gauge().DataPoints().Len() == 0 {
							return 0.0, errNoDataPointsStartTimeMetric
						}
						return metric.Gauge().DataPoints().At(0).DoubleValue(), nil

					case pmetric.MetricTypeSum:
						if metric.Sum().DataPoints().Len() == 0 {
							return 0.0, errNoDataPointsStartTimeMetric
						}
						return metric.Sum().DataPoints().At(0).DoubleValue(), nil

					case pmetric.MetricTypeEmpty, pmetric.MetricTypeHistogram, pmetric.MetricTypeExponentialHistogram, pmetric.MetricTypeSummary:
						fallthrough
					default:
						return 0, errUnsupportedTypeStartTimeMetric
					}
				}
			}
		}
	}
	return 0.0, errNoStartTimeMetrics
}