new

.hgignore

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+syntax: glob
+*.pyc
+

Watchdog.py

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+import os
+import sys
+from logger import Logger
+import paho.mqtt.client as mqtt
+import time
+
+
+DEBUG = False
+BACKGROUND = True
+PID_FILE = "/tmp/watchdog.pid"
+LOG_FILE = "/tmp/watchdog.log"
+BROKER = "mqttbroker"
+
+
+if BACKGROUND:
+    pid = os.fork()
+else:
+    pid = 0
+
+if pid:
+    pidFile = file(PID_FILE , mode='w')
+    pidFile.write("%i\n" % pid)
+    pidFile.close()
+    sys.exit(0)
+
+Logger.openlog(LOG_FILE)
+
+if DEBUG:
+    Logger.debugEnable()
+
+Logger.log("watchdog started")
+
+
+
+
+mqttClient = mqtt.Client()
+mqttClient.connect(BROKER, 1883, 60)
+mqttClient.loop_start()
+
+
+try:
+	while True:
+		time.sleep(1)
+		Logger.debug("WauWau!")
+		mqttClient.publish('IoT/Watchdog', 'WauWau!')
+finally:
+	Logger.log("watchdog terminating")
+
+
+

logger.py

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+from time import gmtime, strftime
+
+class Logger(object):
+    debugFlag = False
+
+    @classmethod
+    def log(cls, data):
+        t = strftime("%d %b %Y %H:%M:%S", gmtime())
+        with open(cls.logfile, 'a') as f:
+            f.write("%s %s\n" % (t, data))
+        if cls.debugFlag:
+            print data
+    
+    @classmethod
+    def debug(cls, data):
+        if cls.debugFlag:
+            cls.log(data)
+    
+    @classmethod
+    def debugEnable(cls):
+        cls.debugFlag = True
+
+    @classmethod
+    def debugDisable(cls):
+        cls.debugFlag = False
+
+    @classmethod
+    def openlog(cls, logfile):
+        cls.logfile = logfile
+        
+