ds18b20 golang push to prometheus

main.go

package main

import (
    "fmt"
    "time"
    "github.com/yryz/ds18b20"
    "github.com/prometheus/client_golang/prometheus"
    "github.com/prometheus/client_golang/prometheus/push"
)


var (
	gatewayUrl = "http://push-gateway:9091"
	tempGauge  = prometheus.NewGauge(prometheus.GaugeOpts{Name: "temperature", Help: "Température en °C"})
)

func publish(temps chan float64) {
	var t float64
	t = <-temps
        fmt.Printf("temperature channel: %.2f°C\n", t)
	tempGauge.Set(t)
	err := push.Collectors("chambre_bebe_job", push.HostnameGroupingKey(), gatewayUrl, tempGauge)
	if err != nil {
		fmt.Println("Could not push completion time to Pushgateway:", err)
	}
}


func main() {

    sensors, err := ds18b20.Sensors()
    if err != nil {
        panic(err)
    }

    fmt.Printf("sensor IDs: %v\n", sensors)

    for _, sensor := range sensors {
        if err == nil {
	    var temps = make(chan float64, 10)
            for {
                t, err := ds18b20.Temperature(sensor)
		if err != nil {
			 fmt.Println(err)
		}
		temps <- t
	        go publish(temps)
                time.Sleep(time.Minute)
            }
        }
    }
}