def get_queued_tasks(cls):
channels = ['cq-tasks']
cl = Channel('cq-tasks').channel_layer
indexes = cl._receive_list_names(channels)
if indexes is None:
return []
index = random.choice(list(indexes.keys()))
list_names = indexes[index]
random.shuffle(list_names)
conn = cl.connection(index)
messages = conn.lrange(list_names[0], 0, -1)
if not messages:
return {}
task_ids = set()
results = conn.mget(messages)
for content in results:
if content is None:
continue
content = cl.deserialize(content)
task_ids.add(content['task_id'])
return task_ids
