redis加分布式锁

def lock_order(fn):
    def _warps(*args, **kwargs):
        pre = cache.get("lock_order", 0)
        if pre:
            print "get_order_process is locked---"
            return 0
        version = str(datetime.now())
        cache.set("lock_order", version, 30)
        try:
            result = fn(*args, **kwargs)
        except Exception, e:
            print("lock_get_order Exception:%s" % e)
            result = -1
        cache.delete("lock_order")
        return result
    return _warps