Python守护进程（多线程开发）

#!/usr/bin/pythonimport sys,time,json,loggingimport Queue, threading, datetimefrom lib.base.daemon import Daemonfrom lib.queue.httpsqs.HttpsqsClient import HttpsqsClientfrom lib.db.DbMongodb import DbMongodblogging.basicConfig(level=logging.DEBUG,                format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',                datefmt='%a, %d %b %Y %H:%M:%S',                filename='myapp.log',                filemode='w')                queue = Queue.Queue()       httpsqs = HttpsqsClient('192.168.0.218','1218','httpsqs.com')db = DbMongodb('192.168.0.119','testdb')        class ThreadGetHttpSqs(threading.Thread):    def __init__(self):        threading.Thread.__init__(self)        self.httpsqs = httpsqs        self.queue = queue        def run(self):        while True:            data = self.httpsqs.get('logtest')            if data is not None:                self.queue.put(data)                logging.info('get:id %s , tablename %s' % (self.getName(),data))            else:                time.sleep(3)                                    class ThreadInsertDB(threading.Thread):    def __init__(self):        threading.Thread.__init__(self)        self.queue = queue        self.db = db            def run(self):        while True:            chunk = self.queue.get()            s = json.loads(chunk)            tablename = s['table']            data = s['data']            self.db.save(tablename,data)            logging.info('insert:id %s , tablename %s' % (self.getName(),tablename))            self.queue.task_done()            class MyDaemon(Daemon):    def _run(self):        while True:            for i in range(2):                t = ThreadGetHttpSqs()                #t.setDaemon(True)                t.start()                        for i in range(2):                b = ThreadInsertDB()                #t.setDaemon(True)                b.start()            #线程已经为永真循环，进程不能再循环            time.wait()                                           if __name__ == "__main__":    daemon = MyDaemon('/tmp/daemon-example.pid')    if len(sys.argv) == 2:        if 'start' == sys.argv[1]:            daemon.start()        elif 'stop' == sys.argv[1]:            daemon.stop()        elif 'restart' == sys.argv[1]:            daemon.restart()        else:            PRint "Unknown command"            sys.exit(2)        sys.exit(0)    else:        print "usage: %s start|stop|restart" % sys.argv[0]        sys.exit(2)