python守护进程实现

一个非常好用的python库

安装

pip install daemonocle

简单使用

import sys

import time

import daemonocle

#This is your daemon. It sleeps, and then sleeps again.

def main():

    while True: 

     time.sleep(10)

if __name__ == '__main__': 

     daemon = daemonocle.Daemon(worker=main, pidfile='/var/run/daemonocle_example.pid') 

     daemon.do_action(sys.argv[1]) # start|stop|restart

高级使用

测试文件crm.py

def main_task():

    while True:

        while task_queue.empty() is not True:

            data = task_queue.get()

            task = loop.create_task(pub_conf(data))

            loop.run_until_complete(task)

        time.sleep(0.1)

# test

@app.route('/', methods=['POST','GET','PUT','DELETE'])

def show_post():

    data = json.loads(request.get_data().decode('utf-8').lower())

    #print(data)

    return {'rcode': 0, 'description': 'Success'}

@click.command(cls=DaemonCLI, daemon_params={'pidfile': '/home/heweiwei/test/crm_example.pid'})

def main():

    threading._start_new_thread(main_task,())

    app.run(host=crm_cfg['net']['ip'],port=int(crm_cfg['net']['port']),debug=False)

if __name__ == '__main__':

    main()

使用举例

[heweiwei@localhost src]$ python crm.py

Usage: crm.py [<options>] <command> [<args>]...

Options:

  --help  Show this message and exit.

Commands:

  start    Start the daemon.

  stop    Stop the daemon.

  restart  Stop then start the daemon.

  status  Get the status of the daemon.

[heweiwei@localhost src]$

[heweiwei@localhost src]$

[heweiwei@localhost src]$ python crm.py start --help

Usage: crm.py start [<options>]

  Start the daemon.

Options:

  --debug  Do NOT detach and run in the background.

  --help  Show this message and exit.

[heweiwei@localhost src]$