added json format to the ServerNode and WorkerNode

ServerNode/api.py

@@ -27,10 +27,11 @@ def get_sensordata():
 def add_sensordata():
     timestamp = request.json['timestamp']
     moisture = request.json['moisture']
+    humidity = request.json['humidity']
     
-    newdata = sensordata(timestamp, moisture)
+    newdata = sensordata(timestamp, moisture, humidity)
     
-    sql = "INSERT INTO sensordata (timestamp, moisture_earth) VALUES (%s, %s)"
+    sql = "INSERT INTO sensordata (timestamp, temperature,  moisture, humidity) VALUES (%s, %s, %s, %s)"
 
     mycursor.execute(sql, newdata)