contentdb/app/tasks/__init__.py

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# Content DB
# Copyright (C) 2018 rubenwardy
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import flask
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from flask_sqlalchemy import SQLAlchemy
from celery import Celery
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from celery.schedules import crontab
from app import app
from app.models import *
class TaskError(Exception):
def __init__(self, value):
self.value = value
def __str__(self):
return repr("TaskError: " + self.value)
class FlaskCelery(Celery):
def __init__(self, *args, **kwargs):
super(FlaskCelery, self).__init__(*args, **kwargs)
self.patch_task()
if 'app' in kwargs:
self.init_app(kwargs['app'])
def patch_task(self):
TaskBase = self.Task
_celery = self
class ContextTask(TaskBase):
abstract = True
def __call__(self, *args, **kwargs):
if flask.has_app_context():
return TaskBase.__call__(self, *args, **kwargs)
else:
with _celery.app.app_context():
return TaskBase.__call__(self, *args, **kwargs)
self.Task = ContextTask
def init_app(self, app):
self.app = app
self.config_from_object(app.config)
def make_celery(app):
celery = FlaskCelery(app.import_name, backend=app.config['CELERY_RESULT_BACKEND'],
broker=app.config['CELERY_BROKER_URL'])
celery.init_app(app)
return celery
celery = make_celery(app)
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CELERYBEAT_SCHEDULE = {
'topic_list_import': {
'task': 'app.tasks.forumtasks.importTopicList',
'schedule': crontab(minute=1, hour=1),
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},
'package_score_update': {
'task': 'app.tasks.pkgtasks.updatePackageScores',
'schedule': crontab(minute=10, hour=1),
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}
}
celery.conf.beat_schedule = CELERYBEAT_SCHEDULE
from . import importtasks, forumtasks, emails, pkgtasks