mirror of
https://github.com/correl/SleekXMPP.git
synced 2024-11-24 03:00:15 +00:00
87 lines
2.3 KiB
Python
87 lines
2.3 KiB
Python
try:
|
|
import queue
|
|
except ImportError:
|
|
import Queue as queue
|
|
import time
|
|
import threading
|
|
import logging
|
|
|
|
class Task(object):
|
|
"""Task object for the Scheduler class"""
|
|
def __init__(self, name, seconds, callback, args=None, kwargs=None, repeat=False, qpointer=None):
|
|
self.name = name
|
|
self.seconds = seconds
|
|
self.callback = callback
|
|
self.args = args or tuple()
|
|
self.kwargs = kwargs or {}
|
|
self.repeat = repeat
|
|
self.next = time.time() + self.seconds
|
|
self.qpointer = qpointer
|
|
|
|
def run(self):
|
|
if self.qpointer is not None:
|
|
self.qpointer.put(('schedule', self.callback, self.args))
|
|
else:
|
|
self.callback(*self.args, **self.kwargs)
|
|
self.reset()
|
|
return self.repeat
|
|
|
|
def reset(self):
|
|
self.next = time.time() + self.seconds
|
|
|
|
class Scheduler(object):
|
|
"""Threaded scheduler that allows for updates mid-execution unlike http://docs.python.org/library/sched.html#module-sched"""
|
|
def __init__(self, parentqueue=None):
|
|
self.addq = queue.Queue()
|
|
self.schedule = []
|
|
self.thread = None
|
|
self.run = False
|
|
self.parentqueue = parentqueue
|
|
|
|
def process(self, threaded=True):
|
|
if threaded:
|
|
self.thread = threading.Thread(name='shedulerprocess', target=self._process)
|
|
self.thread.start()
|
|
else:
|
|
self._process()
|
|
|
|
def _process(self):
|
|
self.run = True
|
|
while self.run:
|
|
try:
|
|
wait = 5
|
|
updated = False
|
|
if self.schedule:
|
|
wait = self.schedule[0].next - time.time()
|
|
try:
|
|
if wait <= 0.0:
|
|
newtask = self.addq.get(False)
|
|
else:
|
|
newtask = self.addq.get(True, wait)
|
|
except queue.Empty:
|
|
cleanup = []
|
|
for task in self.schedule:
|
|
if time.time() >= task.next:
|
|
updated = True
|
|
if not task.run():
|
|
cleanup.append(task)
|
|
else:
|
|
break
|
|
for task in cleanup:
|
|
x = self.schedule.pop(self.schedule.index(task))
|
|
else:
|
|
updated = True
|
|
self.schedule.append(newtask)
|
|
finally:
|
|
if updated: self.schedule = sorted(self.schedule, key=lambda task: task.next)
|
|
except KeyboardInterrupt:
|
|
self.run = False
|
|
logging.debug("Qutting Scheduler thread")
|
|
if self.parentqueue is not None:
|
|
self.parentqueue.put(('quit', None, None))
|
|
|
|
def add(self, name, seconds, callback, args=None, kwargs=None, repeat=False, qpointer=None):
|
|
self.addq.put(Task(name, seconds, callback, args, kwargs, repeat, qpointer))
|
|
|
|
def quit(self):
|
|
self.run = False
|