sensor labels

src/udi/handlers/ttn/models/hottisThreeWayThermometer/hottisThreeWayThermometer.go

@@ -4,8 +4,10 @@ import (
   "log"
   "fmt"
   "bytes"
+  "strconv"
   "encoding/base64"
   "encoding/binary"
+  "encoding/json"
   "udi/database"
 )
 
@@ -20,8 +22,26 @@ type hottisThreeWayThermometerValues struct {
   Value3 int32 
 }
 
+func getSensorName(sensorsMap *map[string]string, sensorAddress uint64) string {
+  key := strconv.FormatUint(sensorAddress, 10)
+	if sensorName, exists := (*sensorsMap)[key]; exists {
+		return sensorName
+	}
+	return "Sensor" + key
+}
+
+func Parse(fPort int, _ []byte, frmPayload string, variables *map[string]database.VariableType, attributes *map[string]interface{}, device *database.Device) error {
+  deviceAttrs := (*device).Attributes
+  sensorsMap := make(map[string]string)
+  sensorsJSON, ok := deviceAttrs["Sensors"].(string)
+  if !ok {
+    return fmt.Errorf("Unable to load sensor map from attributes")
+  }
+  errJ := json.Unmarshal([]byte(sensorsJSON), &sensorsMap)
+  if errJ != nil {
+    return fmt.Errorf("Unable to parse sensor map: %v", errJ)
+  }
 
-func Parse(fPort int, _ []byte, frmPayload string, variables *map[string]database.VariableType, attributes *map[string]interface{}, _ *database.Device) error {
   if fPort != 2 {
     return fmt.Errorf("Unexpected fPort %d", fPort)
   }
@@ -56,19 +76,19 @@ func Parse(fPort int, _ []byte, frmPayload string, variables *map[string]databas
     Value: battery,
   }
   (*variables)["Temperature1"] = database.VariableType {
-    Label: "Temperature1",
+    Label: getSensorName(&sensorsMap, values.SensorAddress1),
     Variable: "Temperature",
     Unit: "°C",
     Value: value1,
   }
   (*variables)["Temperature2"] = database.VariableType {
-    Label: "Temperature2",
+    Label: getSensorName(&sensorsMap, values.SensorAddress2),
     Variable: "Temperature",
     Unit: "°C",
     Value: value2,
   }
   (*variables)["Temperature3"] = database.VariableType {
-    Label: "Temperature3",
+    Label: getSensorName(&sensorsMap, values.SensorAddress3),
     Variable: "Temperature",
     Unit: "°C",
     Value: value3,