Feeder.py freezes

From time to time feeder.py freezes and I currently have no clue what's the cause of this behavior. Suddenly the status light which should be blinking lights up permanently instead...

As a workaround I've added a python script called watchdog.py to the github repo. The watchdog starts feeder.py and whenever it crashes feeder.py will be called again by the watchdog:

 

 

#!/usr/bin/env python

 

import time, subprocess

 

COMMAND=['./feeder.py']

LOGFILE='watchdog.log'

 

def writelog(message):

    with open(LOGFILE,'a') as f:

        f.write("{0} {1}\n".format(time.asctime( time.localtime(time.time())),

                                   message))

 

writelog("Starting")

while True:

    rc = subprocess.call(COMMAND)

    if rc >= 0:

        writelog("Exited with {0} status".format(rc))

    else:

        writelog("Exited on signal {0}".format(0-rc))

    writelog("Restarting")