1 files changed, 131 insertions, 0 deletions
diff --git a/vendor/github.com/containers/buildah/import.go b/vendor/github.com/containers/buildah/import.go
new file mode 100644
index 000000000..f5f156be2
--- /dev/null
+++ b/vendor/github.com/containers/buildah/import.go
@@ -0,0 +1,131 @@
+package buildah
+
+import (
+	"context"
+
+	"github.com/containers/buildah/docker"
+	"github.com/containers/buildah/util"
+	is "github.com/containers/image/storage"
+	"github.com/containers/image/types"
+	"github.com/containers/storage"
+	"github.com/opencontainers/go-digest"
+	"github.com/pkg/errors"
+)
+
+func importBuilderDataFromImage(ctx context.Context, store storage.Store, systemContext *types.SystemContext, imageID, containerName, containerID string) (*Builder, error) {
+	if imageID == "" {
+		return nil, errors.Errorf("Internal error: imageID is empty in importBuilderDataFromImage")
+	}
+
+	uidmap, gidmap := convertStorageIDMaps(storage.DefaultStoreOptions.UIDMap, storage.DefaultStoreOptions.GIDMap)
+
+	ref, err := is.Transport.ParseStoreReference(store, imageID)
+	if err != nil {
+		return nil, errors.Wrapf(err, "no such image %q", imageID)
+	}
+	src, err2 := ref.NewImage(ctx, systemContext)
+	if err2 != nil {
+		return nil, errors.Wrapf(err2, "error instantiating image")
+	}
+	defer src.Close()
+
+	imageName := ""
+	if img, err3 := store.Image(imageID); err3 == nil {
+		if len(img.Names) > 0 {
+			imageName = img.Names[0]
+		}
+		if img.TopLayer != "" {
+			layer, err4 := store.Layer(img.TopLayer)
+			if err4 != nil {
+				return nil, errors.Wrapf(err4, "error reading information about image's top layer")
+			}
+			uidmap, gidmap = convertStorageIDMaps(layer.UIDMap, layer.GIDMap)
+		}
+	}
+
+	defaultNamespaceOptions, err := DefaultNamespaceOptions()
+	if err != nil {
+		return nil, err
+	}
+
+	builder := &Builder{
+		store:            store,
+		Type:             containerType,
+		FromImage:        imageName,
+		FromImageID:      imageID,
+		Container:        containerName,
+		ContainerID:      containerID,
+		ImageAnnotations: map[string]string{},
+		ImageCreatedBy:   "",
+		NamespaceOptions: defaultNamespaceOptions,
+		IDMappingOptions: IDMappingOptions{
+			HostUIDMapping: len(uidmap) == 0,
+			HostGIDMapping: len(uidmap) == 0,
+			UIDMap:         uidmap,
+			GIDMap:         gidmap,
+		},
+	}
+
+	if err := builder.initConfig(ctx, src); err != nil {
+		return nil, errors.Wrapf(err, "error preparing image configuration")
+	}
+
+	return builder, nil
+}
+
+func importBuilder(ctx context.Context, store storage.Store, options ImportOptions) (*Builder, error) {
+	if options.Container == "" {
+		return nil, errors.Errorf("container name must be specified")
+	}
+
+	c, err := store.Container(options.Container)
+	if err != nil {
+		return nil, err
+	}
+
+	systemContext := getSystemContext(&types.SystemContext{}, options.SignaturePolicyPath)
+
+	builder, err := importBuilderDataFromImage(ctx, store, systemContext, c.ImageID, options.Container, c.ID)
+	if err != nil {
+		return nil, err
+	}
+
+	if builder.FromImageID != "" {
+		if d, err2 := digest.Parse(builder.FromImageID); err2 == nil {
+			builder.Docker.Parent = docker.ID(d)
+		} else {
+			builder.Docker.Parent = docker.ID(digest.NewDigestFromHex(digest.Canonical.String(), builder.FromImageID))
+		}
+	}
+	if builder.FromImage != "" {
+		builder.Docker.ContainerConfig.Image = builder.FromImage
+	}
+	builder.IDMappingOptions.UIDMap, builder.IDMappingOptions.GIDMap = convertStorageIDMaps(c.UIDMap, c.GIDMap)
+
+	err = builder.Save()
+	if err != nil {
+		return nil, errors.Wrapf(err, "error saving builder state")
+	}
+
+	return builder, nil
+}
+
+func importBuilderFromImage(ctx context.Context, store storage.Store, options ImportFromImageOptions) (*Builder, error) {
+	if options.Image == "" {
+		return nil, errors.Errorf("image name must be specified")
+	}
+
+	systemContext := getSystemContext(options.SystemContext, options.SignaturePolicyPath)
+
+	_, img, err := util.FindImage(store, "", systemContext, options.Image)
+	if err != nil {
+		return nil, errors.Wrapf(err, "error locating image %q for importing settings", options.Image)
+	}
+
+	builder, err := importBuilderDataFromImage(ctx, store, systemContext, img.ID, "", "")
+	if err != nil {
+		return nil, errors.Wrapf(err, "error importing build settings from image %q", options.Image)
+	}
+
+	return builder, nil
+}