diff options
| -rw-r--r-- | monitor_unified.py | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/monitor_unified.py b/monitor_unified.py index e68c1f4..0ce8133 100644 --- a/monitor_unified.py +++ b/monitor_unified.py @@ -11,6 +11,8 @@ __email__ = "uinarf@autistici.org" Program intended to be run as daemon reading from sensors and writing to database. """ +import signal +import psutil #optional import sys, os, glob, re from time import strftime, localtime, sleep @@ -490,6 +492,42 @@ class Rain(Sensor): # GPIO.add_event_detect(self.pin, GPIO.FALLING, callback=self.read(), # bouncetime=300) +def clean_exit(sig,frame): + #do some other cleanup if you want + os.remove('/var/run/user/[your uid]/RPGH_starter.pid') + os.exit(0) + +def start(): + signal.signal(signal.SIGTERM, clean_exit)#from start-stop-daemon + signal.signal(signal.SIGINT, clean_exit)#from ctrl-c + with open('/var/run/user/[your uid]/RPGH_starter.pid', 'x') as pid_file: + pid_file.write(str(os.getpid())) + do_main_loop() + +def main(): + try: action=sys.argv[1] + except IndexError: action='stop' + if action=='start': + start() + elif action=='start_fork': + if os.fork():sys.exit(0) + start() + elif action=='stop' + with open('/var/run/user/[your uid]/RPGH_starter.pid', r') as pid_file: + pid=int(pid_file.read()) + os.kill(pid,signal.SIGTERM) + + #optional clean up + try: + child=psutil.Process(pid) + except FileNotFoundError:#psutil didn't find the pid dir in /proc + sys.exit() + try: + child.wait(timeout=10) + except psutil.TimeoutExpired:#we didn't exit/clean up in time + child.kill() + os.remove('/var/run/user/[your uid]/RPGH_starter.pid') + if __name__ == '__main__': fq = cfg.getint('hardware_settings', 'read_frequency') print("Instantiating gpio connection") |