new, refactoring

MqttReceiver.py

@@ -0,0 +1,55 @@
+'''
+Created on 09.06.2015
+
+@author: wn
+'''
+
+import threading
+import Queue
+from logger import Logger
+import paho.mqtt.client as mqtt
+import json
+import datetime
+
+__queue = None
+
+def on_message(client, userdata, msg):
+    j = json.loads(msg.payload)
+    now = datetime.datetime.now()
+    midnight = now.replace(now.year, now.month, now.day, 0,0,0,0)
+    seconds = (now - midnight).seconds
+    j['metadata']['timestamp'] = datetime.datetime.now()
+    j['metadata']['seconds'] = seconds
+    j['metadata']['day'] = midnight
+    
+    try:
+        __queue.put_nowait(j)
+    except Queue.Full:
+        Logger.log("Message %s dropped" % (j))
+
+
+
+
+class MqttReceiver(threading.Thread):
+    singleton = None
+    
+    @classmethod
+    def create(cls, queue):
+        if cls.singleton is None:
+            cls.singleton = MqttReceiver(queue)
+            __queue = queue
+        return cls.singleton
+            
+    def __init__(self, queue):
+        threading.Thread.__init__(self)
+        self.queue = queue
+        self.setDaemon(True)
+
+    def run(self):
+        client = mqtt.Client()
+        client.on_message = on_message
+        client.connect("mqttbroker", 1883, 60)
+        client.subscribe("IoT/Measurement/#")
+        client.subscribe("IoT/WiFiPowerMeter/Measurement")
+
+        client.loop_forever()

logger.py

@@ -0,0 +1,19 @@
+
+
+class Logger(object):
+    @staticmethod
+    def log(data):
+        print data
+        if Logger.debugFlag:
+            print data
+    
+    @staticmethod
+    def debugEnable():
+        Logger.debugFlag = True
+
+    @staticmethod
+    def debugDisable():
+        Logger.debugFlag = False
+
+    debugFlag = False
+