def __init__(self, app=None, pool_cls=None, pool_concurrency=None):
self.pool = instantiate(pool_cls or self.pool_cls,
limit=pool_concurrency or self.pool_concurrency)
self.app = app_or_default(app)
self.consumer = Consumer(callback=self.dispatch_tasks,
app=self.app)
def __init__(self, callback=None, app=None):
self.app = app_or_default(app)
self.callback = callback
super(Consumer, self).__init__()
