quay/tools/orphans.py

from data.database import Image, ImageStorage
from peewee import JOIN, fn
from app import app

orphaned = (ImageStorage
            .select()
            .where(ImageStorage.uploading == False)
            .join(Image, JOIN.LEFT_OUTER)
            .group_by(ImageStorage)
            .having(fn.Count(Image.id) == 0))

counter = 0
for orphan in orphaned:
  counter += 1
  print orphan.uuid