func main()

in cmd/main.go [23:70]

• 36 lines of code
• 7 McCabe index (conditional complexity)

func main() {
	log.Println("Prometheus configuration reloader started")
	aws.InitializeAWSSession()

	configFileDir, present := os.LookupEnv("CONFIG_FILE_DIR")
	if !present {
		configFileDir = "/etc/config/"
	}
	configReloadFrequency, present := os.LookupEnv("CONFIG_RELOAD_FREQUENCY")
	if !present {
		configReloadFrequency = "30"
	}
	prometheusConfigFilePath = strings.Join([]string{configFileDir, "prometheus.yaml"}, "/")
	scrapeConfigFilePath = strings.Join([]string{configFileDir, "ecs-services.json"}, "/")

	loadPrometheusConfig()
	loadScrapeConfig()
	log.Println("Loaded initial configuration file")

	go func() {
		reloadFrequency, _ := strconv.Atoi(configReloadFrequency)
		ticker := time.NewTicker(time.Duration(reloadFrequency) * time.Second)
		for {
			select {
			case <-ticker.C:
				//
				// Ticker contains a channel
				// It sends the time on the channel after the number of ticks specified by the duration have elapsed.
				//
				reloadScrapeConfig()
			}
		}
	}()
	log.Println("Periodic reloads under progress...")

	//
	// Block indefinitely on the main channel
	//
	stopChannel := make(chan string)
	for {
		select {
		case status := <-stopChannel:
			fmt.Println(status)
			break
		}
	}

}