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async.py
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/
async.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Hive Appier Framework
# Copyright (C) 2008-2015 Hive Solutions Lda.
#
# This file is part of Hive Appier Framework.
#
# Hive Appier Framework is free software: you can redistribute it and/or modify
# it under the terms of the Apache License as published by the Apache
# Foundation, either version 2.0 of the License, or (at your option) any
# later version.
#
# Hive Appier Framework is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# Apache License for more details.
#
# You should have received a copy of the Apache License along with
# Hive Appier Framework. If not, see <http://www.apache.org/licenses/>.
__author__ = "João Magalhães <joamag@hive.pt>"
""" The author(s) of the module """
__version__ = "1.0.0"
""" The version of the module """
__revision__ = "$LastChangedRevision$"
""" The revision number of the module """
__date__ = "$LastChangedDate$"
""" The last change date of the module """
__copyright__ = "Copyright (c) 2008-2015 Hive Solutions Lda."
""" The copyright for the module """
__license__ = "Apache License, Version 2.0"
""" The license for the module """
import threading
class AsyncManager(object):
def __init__(self, owner):
object.__init__(self)
self.owner = owner
def start(self):
pass
def stop(self):
pass
def add(self, method, args, kwargs, request = None, mid = None):
pass
class SimpleManager(AsyncManager):
def add(self, method, args, kwargs, request = None, mid = None):
if request: kwargs["request"] = request
if mid: kwargs["mid"] = mid
thread = threading.Thread(
target = method,
args = args,
kwargs = kwargs
)
thread.start()
class QueueManager(AsyncManager):
def start(self):
self.thread = threading.Thread(target = self.handler)
self.queue = []
self.condition = threading.Condition()
self.running = True
self.thread.daemon = True
self.thread.start()
def stop(self):
self.running = False
def add(self, method, args, kwargs, request = None, mid = None):
if request: kwargs["request"] = request
if mid: kwargs["mid"] = mid
item = (method, args, kwargs)
self.condition.acquire()
try:
self.queue.append(item)
self.condition.notify()
finally:
self.condition.release()
def handler(self):
while self.running:
self.condition.acquire()
while not self.queue: self.condition.wait()
try: item = self.queue.pop(0)
finally: self.condition.release()
method, args, kwargs = item
try: method(*args, **kwargs)
except BaseException as exception:
self.owner.log_error(exception)