pid handle

 

# https://stackoverflow.com/questions/48506824/automatic-start-and-stop-of-apscheduler-during-boot-of-linux


import signal
import atexit
import os
import time

PID_FILE_PATH = "pythonPID.pid"
stop = False

def create_pid_file():
    # this creates a file called program.pid
    with open(PID_FILE_PATH, "w") as fhandler:
        # and stores the PID in it
        fhandler.write(str(os.getpid()))

def sigint_handler(signum, frame):
    print("Cleanly exiting")
    global stop

    # this will break the main loop
    stop = True

def exit_handler():
    # delete PID file
    os.unlink(PID_FILE_PATH)

def main():
    create_pid_file()

    # this makes exit_handler to be called automatically when the program exists
    atexit.register(exit_handler)

    # this makes sigint_handler to be called when a signal SIGTERM 
    # is sent to the process, e.g with command: kill -SIGTERM $PID
    signal.signal(signal.SIGTERM, sigint_handler)

    while not stop:
        # this represents your main loop
        pass

    #time.sleep(10)
    

if __name__ == "__main__":
    main()

 

 

 

 

 

https://stackoverflow.com/questions/48506824/automatic-start-and-stop-of-apscheduler-during-boot-of-linux

Automatic start and stop of APScheduler during boot of linux?