Created
May 20, 2012 10:53
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DynamicProxy
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class DynamicProxy(object): | |
class Task(object): | |
fn = None | |
args = list() | |
kwargs = dict() | |
def __init__(self, target, target_proxy=None): | |
self._target = target | |
self._methods = inspect.getmembers(target, inspect.ismethod) | |
print "Methods: %s" % self._methods | |
self._queue = Queue.Queue() | |
if not target_proxy: | |
target.__queue = self._queue | |
for name, bound_method in self._methods: | |
#argspec = ",".join(["object" for o in inspect.getargspec(bound_method)[0]]) | |
#argnames = list() | |
#i = 0 | |
#for o in inspect.getargspec(bound_method)[0]: | |
# argnames.append("arg%s" % i) | |
# i += 1 | |
#argnames = ",".join([o for o in argnames]) | |
proxy_generator = """def %s(self, *args, **kwargs): | |
task = DynamicProxy.Task() | |
task.fn = self.%s._target | |
task.args = args | |
task.kwargs = kwargs | |
self._queue.put(task)""" % (name, name) | |
proxy = locals() | |
proxy["target"] = bound_method | |
exec proxy_generator in globals(), proxy | |
proxy[name]._target = bound_method | |
setattr(self, name, types.MethodType(proxy[name], self, self.__class__)) | |
for attribute in ["__module__", "__name__", "__doc__"]: | |
try: | |
setattr(getattr(self, name), attribute, getattr(bound_method, attribute)) | |
except: | |
pass | |
def adv_getattr(self, attr): | |
print self, attr | |
if hasattr(self, attr): | |
return getattr(self, attr) | |
elif hasattr(self.__proxy, attr): | |
return getattr(self.__proxy, attr) | |
else: | |
raise AttributeError() | |
target.__getattr__ = types.MethodType(adv_getattr, target, target.__class__) | |
print target.__getattr__ | |
target.__getattr__("__queue") | |
print "self. %s" % dir(self) | |
if not target_proxy: | |
print "Creating own thread..." | |
self._thread = threading.Thread(target=self._run) | |
self._thread.daemon = True | |
self._thread.start() | |
else: | |
print "Using existing queue" | |
self._queue = target_proxy.__queue | |
print "FINISHED" | |
def run(self): | |
pass | |
def _run(self): | |
while self.run: | |
task = self._queue.get() | |
try: | |
task.fn(*task.args, **task.kwargs) | |
except: | |
pass |
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