def ping_handler(event, context):
   print(url)
   failures=0
   for i in range(3):
       res = app_check(url)
       print(response)
       if "Exception:" in res
           or res.status_code > 399:
           failures+=1
   print(failures)
   if failures < 2 :
       rT = res.elapsed.total_seconds()
       metric = builder.create_metric(
           service, 'Response Time', 'url',
           url, 'Seconds', rt
           )
       builder.add_custom_metric(metric)
   else:
       if res.raise_for_status() is None:
           raise Exception("Check Failed")
       else:
           res.raise_for_status