Add celery app for make periodic tasks

esi/esi/__init__.py

+from __future__ import absolute_import, unicode_literals
+
+# This will make sure the app is always imported when
+# Django starts so that shared_task will use this app.
+from .celery import app as celery_app
+
+__all__ = ['celery_app']

esi/esi/celery.py

+from __future__ import absolute_import, unicode_literals
+import os
+from celery import Celery
+import django
+from django.conf import settings
+
+# set the default Django settings module for the 'celery' program.
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'esi.settings')
+
+app = Celery('esi')
+
+# Using a string here means the worker don't have to serialize
+# the configuration object to child processes.
+# - namespace='CELERY' means all celery-related configuration keys
+#   should have a `CELERY_` prefix.
+app.config_from_object('django.conf:settings', namespace='CELERY')
+
+# Load task modules from all registered Django app configs.
+app.autodiscover_tasks()
+
+
+@app.task(bind=True)
+def debug_task(self):
+    print('Request: {0!r}'.format(self.request))

esi/esi/settings.py

@@ -149,3 +149,13 @@ try:
     from .local_settings import *
 except ImportError:
     pass
+
+CELERY_BROKER_URL = 'amqp://guest:guest@localhost//'
+
+#: Only add pickle to this list if your broker is secured
+#: from unwanted access (see userguide/security.html)
+CELERY_ACCEPT_CONTENT = ['json']
+CELERY_TASK_SERIALIZER = 'json'
+
+CELERY_RESULT_BACKEND = 'rpc'
+CELERY_RESULT_PERSISTENT = True

esi/scraper/tasks.py

+from __future__ import absolute_import, unicode_literals
+from celery import shared_task
+
+
+@shared_task
+def add(x, y):
+    return x + y
+
+
+@shared_task
+def mul(x, y):
+    return x * y
+
+
+@shared_task
+def xsum(numbers):
+    return sum(numbers)

requirements.txt

@@ -9,3 +9,4 @@ mysqlclient==1.3.10
 Django==1.11.1
 django-el-pagination==3.1.0
 django-cors-headers==2.1.0
+celery==4.0.2