python to be linux daemon

所需第三方库：python-daemon[https://pypi.python.org/pypi/python-daemon/]

使用方式：

　　python linux_service.py start/stop/restart

from mythings import start
from daemon import runner
import os
import logging
import inspect

class App:

def __init__(self):
self.stdin_path = '/dev/null'
self.stdout_path = '/dev/tty'
self.stderr_path = '/dev/tty'
self.pidfile_path = '/tmp/foo.pid'
self.pidfile_timeout = 5
self.status = {'alive': True}
this_file = inspect.getfile(inspect.currentframe())
current_path = os.path.abspath(os.path.dirname(this_file))
self.logfile = os.path.join(current_path, 'service.log')

def _getLogger(self):
logger = logging.getLogger('[My Service]')
logger.setLevel(logging.DEBUG)
fh = logging.FileHandler(self.logfile)
fh.setLevel(logging.DEBUG)
#ch = logging.StreamHandler()
#ch.setLevel(logging.DEBUG)
formatter = logging.Formatter('%(asctime)s %(name)-12s %(levelname)-8s %(message)s')
fh.setFormatter(formatter)
#ch.setFormatter(formatter)
logger.addHandler(fh)
#logger.addHandler(ch)
logger.info('init logger...')
return logger

def run(self):
self.logger = self._getLogger()
self.logger.info('linux svc do run...')
start(self.status, self.logger)

app = App()
daemon_runner = runner.DaemonRunner(app)
daemon_runner.do_action()

备注：

日志级别：UNSET < DEBUG < INFO < WARNNING < ERROR＜CRITICAL

当ch.setLevel(logging.DEBUG)时，可以打印出级别大于等于DEBUG的日志（包括DEBUG，INFO ，WARNNING ， ERROR，CRITICAL）