func main()

in prometheus/main.go [15:38]

• 16 lines of code
• 1 McCabe index (conditional complexity)

func main() {
	var listen string
	var metricCount int

	flag.StringVar(&listen, "listen_address", "0.0.0.0:8080", "server listening address")
	flag.IntVar(&metricCount, "metric_count", 1, "number of samples to produce per metric type")

	flag.Parse()

	mc := newMetricCollector(metricCount)

	rand.Seed(time.Now().Unix())

	mc.registerMetrics()
	go mc.updateMetrics()

	log.Println("Serving on address: " + listen)
	log.Println("Producing " + fmt.Sprintf("%d", mc.metricCount) + " metrics per type")

	http.HandleFunc("/", healthCheckHandler)
	http.Handle("/metrics", promhttp.HandlerFor(promRegistry, promhttp.HandlerOpts{}))

	log.Fatal(http.ListenAndServe(listen, nil))
}