熟悉Python的人可能都知道，Apscheduler是python里面一款非常优秀的任务调度框架，这个框架是从鼎鼎大名的Quartz移植而来。
之前有用过Flask版本的Apscheduler做定时任务。刚好前不久接触了Tornado，顺便玩玩Tornado版本的Apscheduler。
本篇做了一个简单的Wdb页面，用于添加和删除定时任务，小伙伴们可以基于这个做一些扩展，比如把定时定时任务写入数据库，改变cron规则等等。
#新增任务(需要动态改变job_id的值)
http://localhost:8888/scheduler?job_id=1&action=add
#删除任务(需要动态改变job_id的值)
http://localhost:8888/scheduler?job_id=1&action=remov
执行结果可以在console看到
from datetime import datetime
from tornado.ioloop import IOLoop, PeriodicCallback
from tornado.web import RequestHandler, Application
from apscheduler.schedulers.tornado import TornadoScheduler
scheduler = None
job_ids = []
# 初始化
def init_scheduler():
global scheduler
scheduler = TornadoScheduler()
scheduler.start()
print('[Scheduler Init]APScheduler has been started')
# 要执行的定时任务在这里
def task1(options):
print('{} [APScheduler][Task]-{}'.format(datetime.now().strftime('%Y-%m-%d %H:%M:%S.%f'), options))
class MainHandler(RequestHandler):
def get(self):
self.write('<a href="/scheduler?job_id=1&action=add">add job</a><br><a href="/scheduler?job_id=1&action=remove">remove job</a>')
class SchedulerHandler(RequestHandler):
def get(self):
global job_ids
job_id = self.get_query_argument('job_id', None)
action = self.get_query_argument('action', None)
if job_id:
# add
if 'add' == action:
if job_id not in job_ids:
job_ids.append(job_id)
scheduler.add_job(task1, 'interval', seconds=3, id=job_id, args=(job_id,))
self.write('[TASK ADDED] - {}'.format(job_id))
else:
self.write('[TASK EXISTS] - {}'.format(job_id))
# remove
elif 'remove' == action:
if job_id in job_ids:
scheduler.remove_job(job_id)
job_ids.remove(job_id)
self.write('[TASK REMOVED] - {}'.format(job_id))
else:
self.write('[TASK NOT FOUND] - {}'.format(job_id))
else:
self.write('[INVALID PARAMS] INVALID job_id or action')
if __name__ == "__main__":
routes = [
(r"/", MainHandler),
(r"/scheduler/?", SchedulerHandler),
]
init_scheduler()
app = Application(routes, debug=True)
app.listen(8888)
IOLoop.current().start()
