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from django.conf import settings

from django.core.exceptions import MiddlewareNotUsed

import logging

class LoggingConfigMiddleware:

    def __init__(self):

        '''Initialise the logging setup from settings, called on first request.'''

        args = {}

        args['level'] = logging.DEBUG if getattr(settings, 'DEBUG', False) else logging.INFO

        if settings.LOGFILE:

            args['filename'] = settings.LOGFILE

        args['format'] = '%(asctime)s [%(levelname)s] %(name)s %(message)s'

        args['datefmt'] = '%Y-%m-%d %H:%M:%S'

        logging.basicConfig(**args)

        raise MiddlewareNotUsed('Logging setup only.')