func gcStore(s *store.Store, gracePeriod time.Duration) error {
var imagesToRemove []string
aciinfos, err := s.GetAllACIInfos([]string{"lastused"}, true)
if err != nil {
return fmt.Errorf("Failed to get aciinfos: %v", err)
}
for _, ai := range aciinfos {
if time.Now().Sub(ai.LastUsed) <= gracePeriod {
break
}
imagesToRemove = append(imagesToRemove, ai.BlobKey)
}
if err := rmImages(s, imagesToRemove); err != nil {
return err
}
return nil
}