import logging
import features

from data.database import Image, ImageStorage, Repository, User
from util.registry.replication import queue_storage_replication

def backfill_replication():
  encountered = set()
  query = (Image
           .select(Image, ImageStorage, Repository, User)
           .join(ImageStorage)
           .switch(Image)
           .join(Repository)
           .join(User))

  for image in query:
    if image.storage.uuid in encountered:
      continue

    print "Enqueueing image storage %s to be replicated" % (image.storage.uuid)
    encountered.add(image.storage.uuid)
    queue_storage_replication(image.repository.namespace_user.username, image.storage)


if __name__ == '__main__':
  logging.basicConfig(level=logging.INFO)
  if not features.STORAGE_REPLICATION:
    print "Storage replication is not enabled"
  else:
    backfill_replication()