# -*- coding:utf-8 -*-  
"""
--------------------------------
    @Author: Dyson
    @Contact: [email protected]
    @file: timer.py
    @time: 2017/7/20 11:01
--------------------------------
"""
import time
import os
import sched
import sys
import datetime

# 初始化sched模組的scheduler類
# 第一個引數是一個可以返回時間戳的函式，第二個引數可以在定時未到達之前阻塞。
 

schedule = sched.scheduler(time.time, time.sleep)

sys.path.append(sys.prefix + "\\Lib\\MyWheels")
reload(sys)
sys.setdefaultencoding('utf8')
start_time = 0
end_time = 0
class mytimer(object):
    # 被週期性排程觸發的函式
    def execute_command(self, cmd, inc):
        start_time = datetime.datetime.now()
        os.system(cmd)
        time.sleep(3
 
)
        end_time = datetime.datetime.now()
        delay = round((end_time-start_time).total_seconds())
        print 
        print u'mytimer => 開始時間：%s' % start_time
        print u'mytimer => 耗時:%smin' %(delay/60)
        schedule.enter(int(inc-delay), 0, self.execute_command, (cmd, inc))
        print
 
 u'mytimer => 結束時間：%s' % end_time

    def cmd_timer(self, cmd, time_str, inc=60):
        # cmd：windows中命令列程式碼
        # time_str：哪一個時間點開始第一次執行
        # inc：兩次執行的間隔時間
        # enter四個引數分別為：間隔時間、優先順序（用於同時間到達的兩個事件同時執行時定序）、被呼叫觸發的函式，
        # 給該觸發函式的引數（tuple形式）
        now = datetime.datetime.now()
        schedule_time = datetime.datetime.strptime(time_str,'%H:%M').replace(year=now.year,month=now.month,day=now.day)
        if schedule_time < now:
            schedule_time = schedule_time + datetime.timedelta(days=1)
        time_before_start = int(round((schedule_time-datetime.datetime.now()).total_seconds()))
        print u'mytimer => 還有%s秒開始任務' %time_before_start
        schedule.enter(time_before_start, 0, self.execute_command, (cmd, inc))
        schedule.run()

if __name__ == '__main__':
    mytimer = mytimer()
    mytimer.cmd_timer("netstat -an", '15:07', 60)