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__init__.py
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__init__.py
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"""celery.backends"""
from functools import partial
from celery import conf
import sys
def get_backend_cls(backend):
"""Get backend class by name.
If the name does not include "``.``" (is not fully qualified),
``"celery.backends."`` will be prepended to the name. e.g.
``"database"`` becomes ``"celery.backends.database"``.
"""
if backend.find(".") == -1:
backend = "celery.backends.%s" % backend
__import__(backend)
backend_module = sys.modules[backend]
return getattr(backend_module, "Backend")
"""
.. function:: get_default_backend_cls()
Get the backend class specified in :setting:`CELERY_BACKEND`.
"""
get_default_backend_cls = partial(get_backend_cls, conf.CELERY_BACKEND)
"""
.. function:: get_default_periodicstatus_backend_cls()
Get the backend class specified in
:setting:`CELERY_PERIODIC_STATUS_BACKEND`.
"""
get_default_periodicstatus_backend_cls = partial(get_backend_cls,
conf.CELERY_PERIODIC_STATUS_BACKEND)
"""
.. class:: DefaultBackend
The default backend class used for storing task results and status,
specified in :setting:`CELERY_BACKEND`.
"""
DefaultBackend = get_default_backend_cls()
"""
.. class:: DefaultPeriodicStatusBackend
The default backend for storing periodic task metadata, specified
in :setting:`CELERY_PERIODIC_STATUS_BACKEND`.
"""
DefaultPeriodicStatusBackend = get_default_periodicstatus_backend_cls()
"""
.. data:: default_backend
An instance of :class:`DefaultBackend`.
"""
default_backend = DefaultBackend()
"""
.. data:: default_periodic_status_backend
An instance of :class:`DefaultPeriodicStatusBackend`.
"""
default_periodic_status_backend = DefaultPeriodicStatusBackend()