package daemon
 
 import (
 	"github.com/docker/docker/builder"

 	"github.com/docker/docker/image/cache"

 	"github.com/sirupsen/logrus"

 )
 
 // MakeImageCache creates a stateful image cache.

 func (daemon *Daemon) MakeImageCache(sourceRefs []string) builder.ImageCache {

 	if len(sourceRefs) == 0 {

 		return cache.NewLocal(daemon.imageStore)

 	}
 

 	cache := cache.New(daemon.imageStore)

 
 	for _, ref := range sourceRefs {
 		img, err := daemon.GetImage(ref)
 		if err != nil {
 			logrus.Warnf("Could not look up %s for cache resolution, skipping: %+v", ref, err)
 			continue
 		}

 		cache.Populate(img)

 	}
 
 	return cache
 }