我正在用烧瓶中的芹菜定期执行任务，并使用doc中的演示，调试消息显示正在发送任务，但我看不到输出。
我使用的经纪人是redis，我正在使用文档中的方法创建芹菜。
我的manage.py文件
import ...
app = create_app()
migrate = Migrate(app, db)
manager = Manager(app)
manager.add_command('db', MigrateCommand)
celery = make_celery(app)
@celery.on_after_configure.connect
def setup_periodic_tasks(sender, **kwargs):
# Calls test('hello') every 10 seconds.
sender.add_periodic_task(10.0, test.s('hello'), name='add every 10')
# Calls test('world') every 30 seconds
sender.add_periodic_task(30.0, test.s('world'), expires=10)
# Executes every Monday morning at 7:30 a.m.
sender.add_periodic_task(
crontab(hour=7, minute=30, day_of_week=1),
test.s('Happy Mondays!'),
)
@celery.task
def test(arg):
print(arg)
def make_celery(app):
celery = Celery(
app.import_name,
backend=app.config['CELERY_RESULT_BACKEND'],
broker=app.config['CELERY_BROKER_URL']
)
celery.conf.update(app.config)
class ContextTask(celery.Task):
def __call__(self, *args, **kwargs):
with app.app_context():
return self.run(*args, **kwargs)
celery.Task = ContextTask
return celery
celery -A manage.celery beat --loglevel=DEBUG
def create_app():
from apps.models import db
from admin import admin, security, user_datastore
app = Flask(__name__, static_folder=settings.ProductSetting.STATIC_FOLDER)
app.register_blueprint(blueprint)
app.config.from_object(settings.ProductSetting)
db.init_app(app)
ckeditor = CKEditor(app)
security_ctx = security.init_app(app, user_datastore)
login_manager = LoginManager(app)
@login_manager.user_loader
def load_user(user_id):
return db.session.query(User).get(user_id)
# define a context processor for merging flask-admin's template context into the
# flask-security views.
@security_ctx.context_processor
def security_context_processor():
return dict(
admin_base_template=admin.base_template,
admin_view=admin.index_view,
h=admin_helpers,
get_url=url_for
)
admin.init_app(app)
def my_access_control_function():
"""
:return: True if the user is allowed to access the filemanager, otherwise False
"""
# You can do whatever permission check you need here
if not current_user.is_active or not current_user.is_authenticated:
return False
if current_user.has_role('superuser'):
return True
return False
flaskfilemanager.init(app, access_control_function=my_access_control_function)
return app
输出：
Configuration ->
. broker -> redis://localhost:6379/0
. loader -> celery.loaders.app.AppLoader
. scheduler -> celery.beat.PersistentScheduler
. db -> celerybeat-schedule
. logfile -> [stderr]@%DEBUG
. maxinterval -> 5.00 minutes (300s)
[2019-02-12 11:27:41,800: DEBUG/MainProcess] Setting default socket timeout to 30
[2019-02-12 11:27:41,801: INFO/MainProcess] beat: Starting...
[2019-02-12 11:27:41,818: DEBUG/MainProcess] Current schedule:
<ScheduleEntry: manage.test('world') manage.test('world') <freq: 30.00 seconds>
<ScheduleEntry: add every 10 manage.test('hello') <freq: 10.00 seconds>
<ScheduleEntry: manage.test('Happy Mondays!') manage.test('Happy Mondays!') <crontab: 30 7 1 * * (m/h/d/dM/M
Y)>
[2019-02-12 11:27:41,818: DEBUG/MainProcess] beat: Ticking with max interval->5.00 minutes
[2019-02-12 11:27:42,842: INFO/MainProcess] Scheduler: Sending due task add every 10 (manage.test)
[2019-02-12 11:27:44,900: DEBUG/MainProcess] beat: Synchronizing schedule...
[2019-02-12 11:27:44,911: DEBUG/MainProcess] manage.test sent. id->acc7f805-d8d5-4ae3-af35-1b5da1798749
[2019-02-12 11:27:44,912: DEBUG/MainProcess] beat: Waking up in 8.33 seconds.
[2019-02-12 11:27:53,256: INFO/MainProcess] Scheduler: Sending due task manage.test('world') (manage.test)
[2019-02-12 11:27:53,257: DEBUG/MainProcess] manage.test sent. id->1c691bd7-0ba1-4215-8c56-fbc59d5ca775
[2019-02-12 11:27:53,257: INFO/MainProcess] Scheduler: Sending due task add every 10 (manage.test)
[2019-02-12 11:27:53,258: DEBUG/MainProcess] manage.test sent. id->709fe5fd-83c8-4fca-a8e0-0c1ca8d25e84
[2019-02-12 11:27:53,258: DEBUG/MainProcess] beat: Waking up in 9.99 seconds.
命令
celery -A manage.celery worker -l info
- ** ---------- [config]
- ** ---------- .> app: apps:0x27466765c88
- ** ---------- .> transport: redis://localhost:6379/0
- ** ---------- .> results: redis://localhost:6379/0
- *** --- * --- .> concurrency: 4 (prefork)
-- ******* ---- .> task events: OFF (enable -E to monitor tasks in this worker)
--- ***** -----
-------------- [queues]
.> celery exchange=celery(direct) key=celery
[tasks]
. manage.test
[2019-02-12 15:05:13,190: CRITICAL/MainProcess] Unrecoverable error: PicklingError("Can't pickle <function <
lambda> at 0x000002687E93EA60>: attribute lookup <lambda> on flask_security.core failed",)
Traceback (most recent call last):
File "e:\env\games\lib\site-packages\celery\worker\worker.py", line 205, in start
self.blueprint.start(self)
File "e:\env\games\lib\site-packages\celery\bootsteps.py", line 119, in start
step.start(parent)
File "e:\env\games\lib\site-packages\celery\bootsteps.py", line 369, in start
return self.obj.start()
File "e:\env\games\lib\site-packages\celery\concurrency\base.py", line 131, in start
self.on_start()
File "e:\env\games\lib\site-packages\celery\concurrency\prefork.py", line 112, in on_start
**self.options)
File "e:\env\games\lib\site-packages\billiard\pool.py", line 1007, in __init__
self._create_worker_process(i)
File "e:\env\games\lib\site-packages\billiard\pool.py", line 1116, in _create_worker_process
w.start()
File "e:\env\games\lib\site-packages\billiard\process.py", line 124, in start
self._popen = self._Popen(self)
File "e:\env\games\lib\site-packages\billiard\context.py", line 383, in _Popen
return Popen(process_obj)
File "e:\env\games\lib\site-packages\billiard\popen_spawn_win32.py", line 79, in __init__
reduction.dump(process_obj, to_child)
File "e:\env\games\lib\site-packages\billiard\reduction.py", line 99, in dump
ForkingPickler(file, protocol).dump(obj)
_pickle.PicklingError: Can't pickle <function <lambda> at 0x000002687E93EA60>: attribute lookup <lambda> on
flask_security.core failed
答案 0 :(得分：0)
问题在于该行：
celery.conf.update(app.config)
将采用所有烧瓶（包括烧瓶安全性）配置，并将其添加到celery配置中。
在flask-security中，一些配置变量实际上是lambda的（以及某些localProxies）。当然，这些不会让用户感到腌制-有些实际上取决于上下文。为什么需要所有这些？