浅谈python多线程和队列管理shell程序

#!/usr/bin/python2.7
# -*- coding:utf-8 -*-
import os,sys
from datetime import datetime
import commands
import gevent.monkey
gevent.monkey.patch_os()
import gevent
 
def Servers():
  servers=commands.getoutput('''ls /data/program/payment/ | grep 'payment' ''')
  servers=servers.split('\n')
  return servers
 
def handle(servername):
  if sys.argv[1] == 'start' or sys.argv[1] == 'stop' or sys.argv[1] == 'restart':
    print '\033[1;31;40m'
    print '========================>>>go to handle %s<<<=========================' %servername
    print '\033[0m'
    r=commands.getoutput('''su - tomcat -c "/data/program/payment/%s/bin/server.sh %s &" ''' %(servername,sys.argv[1]))  #在这里会阻塞，我们无法找到合适的地方进行协程的切换
    gevent.sleep(0)        #无论放到何处，不是之前就是切换之后都会阻塞。
    print r
  else:
    print 'Please Use start | stop | restart To Handle The Command'
    sys.exit(1)
   
if __name__ == '__main__':
  s=Servers()
  threads=[]
  for i in s:
    threads.append(gevent.spawn(handle,i))
#  print threads
  gevent.joinall(threads)

#!/usr/bin/python2.7
# -*- coding:utf-8 -*-
 
from datetime import datetime
import commands
from Queue import Queue
from threading import Thread
 
_sentinel = object()
 
def Servers():
  servers=commands.getoutput('''ls /data/program/payment/ | grep 'payment' ''')
  servers=servers.split('\n')
  return servers
 
def producer(servername,out_q):
  if sys.argv[1] == 'start' or sys.argv[1] == 'stop' or sys.argv[1] == 'restart':
    print '\033[1;31;40m'
    print '========================>>>put %s in Queue<<<=========================' %servername
    print '\033[0m'
    out_q.put_nowait(commands.getoutput('''su - tomcat -c "/data/program/payment/%s/bin/server.sh %s &" ''' %(servername,sys.argv[1])))  #放入队列的对象
     
  else:
    print 'Please Use start | stop | restart To Handle The Command'
    sys.exit(1)
 
def consumer(servername,in_q):
  n=len(servername)
  while n > 0:             #循环在队列中取结果，直到循环结束
    data=in_q.get()
    n -= 1
    print '\033[1;31;40m'
    print data
    print '\033[0m'
  print '\033[1;31;40m'
  print 'consumer was done!!!!!!!'
  print '\033[0m' 
 
if __name__ == '__main__':
  s=Servers()
  q = Queue()
  t1 = Thread(target=consumer, args=(s,q,))      #消费者在队列中获取结果，前面的函数内部已经循环获取
  for i in s:
    t2=Thread(target=producer, args=(i,q,))     #讲线程进行管理，放入队列
    t2.start()                   #启动生产者线程
#    t2.join()                   #启动生产者以后放弃校验线程是否结束，进行并发，因为我们是把线程放入队列进行管理的，所以不用在这里等待线程结束，如果使用了join这里会阻塞我们的程序。线程结束后，消费者会通知父进程线程已经结束。
  t1.start()                     #启动消费者线程
  t1.join()                      #在获取完成之前进行线程的阻塞