Internet Watcher V2

#V2 of InternetWatcher - Added file flushing every X runs, to assist in Replication scenarios.
#This scripts automatically polls the Google DNS server every 15 seconds to check that it has internet connectivity - It logs both LIVE and DEAD statuses to a formatted .csv file

#Import required libraries
import logging, time, socket, os, sys

#Declare Variables
##Number of runs passed
count = 0
##Last count where file was flushed
lastCount = 0
##How many counts until it flushes file
minCounter = 100
##Max number of iterations before it restarts itself - 5759 is roughly 24 hours
maxCount = 5759

#Define logging function
##file_name is the file name you want to force it to append to
##mode disables addHandler if anything other than "c"
##folderpath is the path to folder, leave it empty to put log files in executable folder
def startupTask(file_name="", mode="c", folderpath=""):

  ##If the filename is nothing, then prepare a new file filename. Otherwise, the supplied filename should be used
  if file_name == "":
    t_fn = folderpath+time.strftime("%d%m20%y-%H%M%S",time.localtime())+".csv"
  else:
    t_fn = file_name

  ##Configure logging in the specific format
  logging.basicConfig(
    filename=t_fn,
    filemode="a",
    level=logging.INFO,
    datefmt="%d %b - %Y : %H:%M:%S",
    format="%(asctime)s , %(levelname)s , %(message)s")
  console = logging.StreamHandler()
  console.setLevel(logging.INFO)
  formatter = logging.Formatter("%(asctime)s , %(levelname)s , %(message)s","%d %b - %Y : %H:%M:%S")
  console.setFormatter(formatter)

  ##Add handler if equal to c, otherwise ignore
  if mode == "c":
    logging.getLogger('').addHandler(console)
  else:
    pass

  ##Return the file name
  return t_fn

#Start logging
cur_fn = startupTask("", "c", "")

#Main Script
while True:
  time.sleep(10)

  ##If the maximum count has been reached, restart the script
  ##Alternatively, kill the script.
  if count > maxCount:
    logging.shutdown()
    time.sleep(0.2)
    os.execv(sys.executable, ['python'] + sys.argv)
    ###quit()

  ##If the appropriate number of counts has passed, flush the log to disk and reopen the file for appending
  elif count == lastCount+minCounter:
    lastCount = count
    logging.shutdown()
    time.sleep(0.2)
    startupTask(cur_fn, "l")

  else:
    pass

  ##Attempt connection to Google DNS, log as success
  try:
    time.sleep(5)
    count = count + 1
    s = socket.create_connection(("8.8.8.8", 53),5)
    logging.info(str(count)+" , LIVE")

  ##If the connection fails, log as failure
  except:
    logging.warn(str(count)+" , DEAD")