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authorNathan Fritz <nathan@andyet.net>2010-05-27 09:32:28 +0800
committerThom Nichols <tmnichols@gmail.com>2010-06-01 22:07:52 +0800
commit2e7024419a98e0dc69493010faf24b4a2c88d37e (patch)
tree4b986d553fde9ea8546d8c668f9c367a33c0eef8
parent5235313aab8bbea16b465fa43e88f03e14bb223e (diff)
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adding scheduler
-rw-r--r--sleekxmpp/xmlstream/scheduler.py76
-rw-r--r--sleekxmpp/xmlstream/xmlstream.py9
2 files changed, 82 insertions, 3 deletions
diff --git a/sleekxmpp/xmlstream/scheduler.py b/sleekxmpp/xmlstream/scheduler.py
new file mode 100644
index 00000000..5cb8aff0
--- /dev/null
+++ b/sleekxmpp/xmlstream/scheduler.py
@@ -0,0 +1,76 @@
+try:
+ import queue
+except ImportError:
+ import Queue as queue
+import time
+import threading
+
+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):
+ self.addq = queue.Queue()
+ self.schedule = []
+ self.thread = None
+ self.run = True
+
+ 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):
+ while self.run:
+ wait = 5
+ updated = False
+ if self.schedule:
+ wait = self.schedule[0].next - time.time()
+ try:
+ 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)
+ print [x.name for x in self.schedule]
+
+ 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
diff --git a/sleekxmpp/xmlstream/xmlstream.py b/sleekxmpp/xmlstream/xmlstream.py
index 13a87a63..3f0ab182 100644
--- a/sleekxmpp/xmlstream/xmlstream.py
+++ b/sleekxmpp/xmlstream/xmlstream.py
@@ -22,6 +22,7 @@ import time
import traceback
import types
import xml.sax.saxutils
+from . import scheduler
HANDLER_THREADS = 1
@@ -75,6 +76,7 @@ class XMLStream(object):
self.eventqueue = queue.Queue()
self.sendqueue = queue.Queue()
+ self.scheduler = scheduler.Scheduler()
self.namespace_map = {}
@@ -145,6 +147,7 @@ class XMLStream(object):
raise RestartStream()
def process(self, threaded=True):
+ self.scheduler.process(threaded=True)
for t in range(0, HANDLER_THREADS):
self.__thread['eventhandle%s' % t] = threading.Thread(name='eventhandle%s' % t, target=self._eventRunner)
self.__thread['eventhandle%s' % t].start()
@@ -156,8 +159,8 @@ class XMLStream(object):
else:
self._process()
- def schedule(self, seconds, handler, args=None):
- threading.Timer(seconds, handler, args).start()
+ def schedule(self, name, seconds, callback, args=None, kwargs=None, repeat=False):
+ self.scheduler.add(name, seconds, callback, args, kwargs, repeat, qpointer=self.eventqueue)
def _process(self):
"Start processing the socket."
@@ -336,7 +339,7 @@ class XMLStream(object):
except Exception as e:
traceback.print_exc()
args[0].exception(e)
- elif etype == 'sched':
+ elif etype == 'schedule':
try:
handler.run(*args)
except: