django-orchestra/orchestra/contrib/orchestration/tasks.py

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from datetime import timedelta
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from celery.task.schedules import crontab
from django.utils import timezone
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from orchestra.contrib.tasks import periodic_task
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from .models import BackendLog
@periodic_task(run_every=crontab(hour=7, minute=30, day_of_week=1))
def backend_logs_cleanup():
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days = settings.ORCHESTRATION_BACKEND_CLEANUP_DAYS
epoch = timezone.now()-timedelta(days=days)
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BackendLog.objects.filter(created_at__lt=epoch).delete()