2019独角兽企业重金招聘Python工程师标准>>> 
3.6-3.7 rc脚本（start、stop和status方法）
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# [@Version](https://my.oschina.net/u/931210) : python 2.7
# [@Time](https://my.oschina.net/u/126678) : 2018/12/10 0:54
# [@Author](https://my.oschina.net/arthor) : zhang xun
# [@File](https://my.oschina.net/u/726396) : rc.py
import sys
import os
from subprocess import Popen, PIPE
class Process(object):
'''memcached rc script'''
def __init__(self,name,program,args,workdir):
self.name = name
self.program = program
self.args = args
self.workdir = workdir
def _init(self):
'''/var/tmp/memcached'''
if not os.path(self.workdir)
os.makedir(self.workdir)
os.chdir(self.workdir)
else :
os.chdir(self.workdir)
def _pidFile(self):
'''/var/tmp/memcached/memcached.pid'''
return os.path.join(self.workdir, "%s.pid" % self.name)
def _withPid(self):
if self.pid:
with open(self._pidFile(),'w') as fd :
fd.write(str(self.pid))
def start(self):
cmd = self.program + ' ' + self.args
p = Popen(cmd,stdout=PIPE,shell=True)
self.pid = p.pid
self._withPid()
print(" STARTED ! ")
def _getPid(self):
p = Popen(['pidof',self.name],stdout=PIPE)
pid = p.stdout.read().strip()
return pid
def stop(self):
pid = self._getPid()
if pid:
os.kill(int(pid),15)
if os.path.exists(self._pidFile()):
os.remove(self._pidFile())
print ("STOPED !")
def restart(self):
self.stop()
self.stop()
def status(self):
pid = self._getPid()
if pid :
print (" started ")
else :
print (" stoped ")