Condense code

host/host_linux.go

@@ -490,44 +490,24 @@ func SensorsTemperaturesWithContext(ctx context.Context) ([]TemperatureStat, err
 		}
 
 		// Add discovered temperature sensor to the list
+		optional := optionalProperties(filepath.Join(directory, basename))
 		temperatures = append(temperatures, TemperatureStat{
 			SensorKey:   name,
 			Temperature: temperature / hostTemperatureScale,
-			High:        optionalValueReadFromFile(basepath+"_max") / hostTemperatureScale,
-			Critical:    optionalValueReadFromFile(basepath+"_crit") / hostTemperatureScale,
-			Optional:    optionalProperties(filepath.Join(directory, basename)),
+			High:        optional["max"],
+			Critical:    optional["crit"],
+			Optional:    optional,
 		})
 	}
 
 	return temperatures, warns.Reference()
 }
 
-func optionalValueReadFromFile(filename string) float64 {
-	var raw []byte
-	var err error
-	var value float64
-
-	// Check if file exists
-	if _, err := os.Stat(filename); os.IsNotExist(err) {
-		return 0
-	}
-
-	if raw, err = os.ReadFile(filename); err != nil {
-		return 0
-	}
-
-	if value, err = strconv.ParseFloat(strings.TrimSpace(string(raw)), 64); err != nil {
-		return 0
-	}
-
-	return value
-}
-
 func optionalProperties(basename string) map[string]float64 {
 	// Determine all files with the base-prefix
 	matches, err := filepath.Glob(basename + "_*")
 	if err != nil {
-		return nil
+		return map[string]float64{}
 	}
 
 	// Collect the information from all files that are not already handled