diff options
Diffstat (limited to 'kafka/util.py')
-rw-r--r-- | kafka/util.py | 40 |
1 files changed, 31 insertions, 9 deletions
diff --git a/kafka/util.py b/kafka/util.py index 10bf838..11178f5 100644 --- a/kafka/util.py +++ b/kafka/util.py @@ -1,7 +1,7 @@ from collections import defaultdict from itertools import groupby import struct -from threading import Timer +from threading import Thread, Event def write_int_string(s): @@ -81,19 +81,41 @@ class ReentrantTimer(object): t: timer interval in milliseconds fn: a callable to invoke + args: tuple of args to be passed to function + kwargs: keyword arguments to be passed to function """ - def __init__(self, t, fn): - self.timer = None - self.t = t + def __init__(self, t, fn, *args, **kwargs): + + if t <= 0: + raise ValueError('Invalid timeout value') + + if not callable(fn): + raise ValueError('fn must be callable') + + self.thread = None + self.t = t / 1000.0 self.fn = fn + self.args = args + self.kwargs = kwargs + self.active = None + + def _timer(self, active): + while not active.wait(self.t): + self.fn(*self.args, **self.kwargs) def start(self): - if self.timer is not None: - self.timer.cancel() + if self.thread is not None: + self.stop() - self.timer = Timer(self.t / 1000., self.fn) - self.timer.start() + self.active = Event() + self.thread = Thread(target=self._timer, args=(self.active,)) + self.thread.daemon = True # So the app exits when main thread exits + self.thread.start() def stop(self): - self.timer.cancel() + if self.thread is None: + return + + self.active.set() + self.thread.join(self.t + 1) self.timer = None |