add github.com/docker/docker dependency

vendor/github.com/docker/distribution/registry/storage/vacuum.go

@@ -0,0 +1,102 @@
+package storage
+
+import (
+	"context"
+	"path"
+
+	dcontext "github.com/docker/distribution/context"
+	"github.com/docker/distribution/registry/storage/driver"
+	"github.com/opencontainers/go-digest"
+)
+
+// vacuum contains functions for cleaning up repositories and blobs
+// These functions will only reliably work on strongly consistent
+// storage systems.
+// https://en.wikipedia.org/wiki/Consistency_model
+
+// NewVacuum creates a new Vacuum
+func NewVacuum(ctx context.Context, driver driver.StorageDriver) Vacuum {
+	return Vacuum{
+		ctx:    ctx,
+		driver: driver,
+	}
+}
+
+// Vacuum removes content from the filesystem
+type Vacuum struct {
+	driver driver.StorageDriver
+	ctx    context.Context
+}
+
+// RemoveBlob removes a blob from the filesystem
+func (v Vacuum) RemoveBlob(dgst string) error {
+	d, err := digest.Parse(dgst)
+	if err != nil {
+		return err
+	}
+
+	blobPath, err := pathFor(blobPathSpec{digest: d})
+	if err != nil {
+		return err
+	}
+
+	dcontext.GetLogger(v.ctx).Infof("Deleting blob: %s", blobPath)
+
+	err = v.driver.Delete(v.ctx, blobPath)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// RemoveManifest removes a manifest from the filesystem
+func (v Vacuum) RemoveManifest(name string, dgst digest.Digest, tags []string) error {
+	// remove a tag manifest reference, in case of not found continue to next one
+	for _, tag := range tags {
+
+		tagsPath, err := pathFor(manifestTagIndexEntryPathSpec{name: name, revision: dgst, tag: tag})
+		if err != nil {
+			return err
+		}
+
+		_, err = v.driver.Stat(v.ctx, tagsPath)
+		if err != nil {
+			switch err := err.(type) {
+			case driver.PathNotFoundError:
+				continue
+			default:
+				return err
+			}
+		}
+		dcontext.GetLogger(v.ctx).Infof("deleting manifest tag reference: %s", tagsPath)
+		err = v.driver.Delete(v.ctx, tagsPath)
+		if err != nil {
+			return err
+		}
+	}
+
+	manifestPath, err := pathFor(manifestRevisionPathSpec{name: name, revision: dgst})
+	if err != nil {
+		return err
+	}
+	dcontext.GetLogger(v.ctx).Infof("deleting manifest: %s", manifestPath)
+	return v.driver.Delete(v.ctx, manifestPath)
+}
+
+// RemoveRepository removes a repository directory from the
+// filesystem
+func (v Vacuum) RemoveRepository(repoName string) error {
+	rootForRepository, err := pathFor(repositoriesRootPathSpec{})
+	if err != nil {
+		return err
+	}
+	repoDir := path.Join(rootForRepository, repoName)
+	dcontext.GetLogger(v.ctx).Infof("Deleting repo: %s", repoDir)
+	err = v.driver.Delete(v.ctx, repoDir)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}