fromproj.tasks import my_task1fromproj.tasks import my_task2fromproj.tasks import my_task3fromcelery import chain # 将多个signature组成一个任务链# my_task1的运行结果将会传递给my_task2 # my_task2的运行结果会传递给my_task3my_chain= chain(my_task1.s(10,10) | my_task2.s(20) | my_t...
on_failure on_success on_retry after_return # celery_tasks.py class MyTask(Task): def on_success(self, retval, task_id, args, kwargs): print 'task done: {0}'.format(retval) return super(MyTask, self).on_success(retval, task_id, args, kwargs) def on_failure(self, exc, task_id...
on_failure on_success on_retry after_return # celery_tasks.py class MyTask(Task): def on_success(self, retval, task_id, args, kwargs): print 'task done: {0}'.format(retval) return super(MyTask, self).on_success(retval, task_id, args, kwargs) def on_failure(self, exc, task_id...
class MyTask(celery.Task): # 任务失败时执行 def on_failure(self, exc, task_id, args, kwargs, einfo): print('{0!r} failed: {1!r}'.format(task_id, exc)) # 任务成功时执行 def on_success(self, retval, task_id, args, kwargs): pass # 任务重试时执行 def on_retry(self, exc, ...
首先来实现 task.py,用于定义任务相关的一些逻辑 # task.py import abc import json import uuid import traceback import pickle from broker import Broker from backend import Backend class BaseTask (abc.ABC): """ Example Usage: class AdderTask(BaseTask): ...
因为不是很直观,且过程非常曲折,我这里就不详细描述具体过程了,直接说结论:这个start方法最终会调用celery/concurrency/prefork.py中的TaskPool类下的on_start 方法。我们可以看下这个 on_start 方法: # celery/concurrency/prefork.py# ...省略classTaskPool(BasePool):"""Multiprocessing Pool implementation."""...
django example does not runIssue Type: Bug Report #9431 openedNov 22, 2024byrmcloughlin 3 of 19 tasks 4 Stop or delete an asynchronous task within a celery taskIssue Type: Bug Report #9402 openedNov 7, 2024byFianax 4 of 19 tasks ...
Asynchronous processesnot only improve the user experience, but allow you to manage a server load quite well. Imagine a different scenario involving a giant web app built on a standard REST API without multi-threading, without async, and withouttask queues. Now, what happens when the application...
So, I decided to try and simplify it, and just follow the basic example on the Celery documentation. celery_test.py from celery import Celery celery = Celery('celery_test', broker='amqp://', backend='rpc://') @celery.task def add(x, y): return x + y if __name__ == '__mai...
Example #2Source File: tasks.py From mangaki with GNU Affero General Public License v3.0 6 votes def task_status(request: Request, task_id: str) -> Response: if not redis_pool: raise BackgroundTaskUnavailable() bg_task = get_object_or_404(request.user.background_tasks, task_id=task...