43 lines
1.5 KiB
Python
43 lines
1.5 KiB
Python
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"""The default loader used when no custom app has been initialized."""
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import os
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import warnings
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from celery.exceptions import NotConfigured
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from celery.utils.collections import DictAttribute
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from celery.utils.serialization import strtobool
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from .base import BaseLoader
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__all__ = ('Loader', 'DEFAULT_CONFIG_MODULE')
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DEFAULT_CONFIG_MODULE = 'celeryconfig'
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#: Warns if configuration file is missing if :envvar:`C_WNOCONF` is set.
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C_WNOCONF = strtobool(os.environ.get('C_WNOCONF', False))
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class Loader(BaseLoader):
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"""The loader used by the default app."""
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def setup_settings(self, settingsdict):
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return DictAttribute(settingsdict)
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def read_configuration(self, fail_silently=True):
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"""Read configuration from :file:`celeryconfig.py`."""
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configname = os.environ.get('CELERY_CONFIG_MODULE',
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DEFAULT_CONFIG_MODULE)
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try:
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usercfg = self._import_config_module(configname)
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except ImportError:
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if not fail_silently:
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raise
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# billiard sets this if forked using execv
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if C_WNOCONF and not os.environ.get('FORKED_BY_MULTIPROCESSING'):
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warnings.warn(NotConfigured(
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'No {module} module found! Please make sure it exists and '
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'is available to Python.'.format(module=configname)))
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return self.setup_settings({})
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else:
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self.configured = True
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return self.setup_settings(usercfg)
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