Refactor temperature struct

pkg/temperature/ds18b20.go

@@ -13,12 +13,6 @@ import (
 	"github.com/rs/zerolog/log"
 )
 
-type TemperatureReading struct {
-	Sensor string
-	Time   time.Time
-	Value  int64
-}
-
 var (
 	ErrReadSensor = errors.New("Failed to read sensor temperature")
 
@@ -43,7 +37,6 @@ func SetSensors(newSensors []string) {
 }
 
 func Serve(ctx context.Context, wg *sync.WaitGroup) {
-	wg.Add(1)
 	defer wg.Done()
 
 	for {
@@ -83,9 +76,9 @@ func readSensors() {
 			Observe(dur)
 
 		C <- &TemperatureReading{
-			Time:   time.Now(),
-			Sensor: sensor,
-			Value:  t,
+			Time:         time.Now(),
+			Sensor:       sensor,
+			MilliDegrees: t,
 		}
 	}
 }

pkg/temperature/temperature.go

@@ -0,0 +1,13 @@
+package temperature
+
+import "time"
+
+type TemperatureReading struct {
+	Sensor       string
+	Time         time.Time
+	MilliDegrees int64
+}
+
+func (t *TemperatureReading) Degrees() float64 {
+	return float64(t.MilliDegrees) / 1000.0
+}