func()

in prometheus/metrics_collector.go [46:94]

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

func (mc *metricCollector) registerMetrics() {
	for idx := 0; idx < mc.metricCount; idx++ {
		namespace := "test"
		counter := prometheus.NewCounter(
			prometheus.CounterOpts{
				Namespace: namespace,
				Name:      fmt.Sprintf("counter%v", idx),
				Help:      "This is my counter",
				// labels can be added like this
				// ConstLabels: prometheus.Labels{
				// 	"label1": "val1",
				// },
			})
		gauge := prometheus.NewGauge(
			prometheus.GaugeOpts{
				Namespace: namespace,
				Name:      fmt.Sprintf("gauge%v", idx),
				Help:      "This is my gauge",
			})
		histogram := prometheus.NewHistogram(
			prometheus.HistogramOpts{
				Namespace: namespace,
				Name:      fmt.Sprintf("histogram%v", idx),
				Help:      "This is my histogram",
				Buckets:   []float64{0.005, 0.1, 1},
			})
		summary := prometheus.NewSummary(
			prometheus.SummaryOpts{
				Namespace: namespace,
				Name:      fmt.Sprintf("summary%v", idx),
				Help:      "This is my summary",
				Objectives: map[float64]float64{
					0.1:  0.5,
					0.5:  0.5,
					0.99: 0.5,
				},
			})

		promRegistry.MustRegister(counter)
		promRegistry.MustRegister(gauge)
		promRegistry.MustRegister(histogram)
		promRegistry.MustRegister(summary)

		mc.counters = append(mc.counters, counter)
		mc.gauges = append(mc.gauges, gauge)
		mc.histograms = append(mc.histograms, histogram)
		mc.summarys = append(mc.summarys, summary)
	}
}