Daemon to checks whether 'status' of one model, if it is '0' then update another model, else if it is '1' then don't do anything.

daemon_process.py

#standard python libs
import logging
import time

#third party libs
from daemon import runner

from utils process_shipment_queue


class App():
    
    def __init__(self):
        self.stdin_path = '/dev/null'
        self.stdout_path = '/dev/tty'
        self.stderr_path = '/dev/tty'
        self.pidfile_path =  '/var/run/testdaemon/testdaemon.pid'
        self.pidfile_timeout = 5
            
    def run(self):
        while True:
            # The following function checks whether 'status' of
            # one model, if it is '0' then update another model,
            # else if it is '1' then don't do anything.
            process_shipment_queue()
            time.sleep(10)

app = App()
logger = logging.getLogger("DaemonLog")
logger.setLevel(logging.INFO)
formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
handler = logging.FileHandler("/var/log/testdaemon/testdaemon.log")
handler.setFormatter(formatter)
logger.addHandler(handler)

daemon_runner = runner.DaemonRunner(app)
#This ensures that the logger file handle does not get closed during daemonization
daemon_runner.daemon_context.files_preserve=[handler.stream]
daemon_runner.do_action()