From 17783dda6880c786a6eb3f47b3b6100e43bcdc77 Mon Sep 17 00:00:00 2001
From: Qi Wang <qiwan@redhat.com>
Date: Thu, 16 Apr 2020 00:41:09 -0400
Subject: manifest create,add,inspect

Implememts manifest subcommands create, add, inspect.

Signed-off-by: Qi Wang <qiwan@redhat.com>
---
 pkg/domain/infra/abi/manifest.go | 101 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 pkg/domain/infra/abi/manifest.go

(limited to 'pkg/domain/infra/abi')

diff --git a/pkg/domain/infra/abi/manifest.go b/pkg/domain/infra/abi/manifest.go
new file mode 100644
index 000000000..27d4bf9a5
--- /dev/null
+++ b/pkg/domain/infra/abi/manifest.go
@@ -0,0 +1,101 @@
+// +build ABISupport
+
+package abi
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	buildahUtil "github.com/containers/buildah/util"
+	"github.com/containers/image/v5/docker"
+	"github.com/containers/image/v5/transports/alltransports"
+	libpodImage "github.com/containers/libpod/libpod/image"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/containers/libpod/pkg/util"
+
+	"github.com/pkg/errors"
+)
+
+// ManifestCreate implements logic for creating manifest lists via ImageEngine
+func (ir *ImageEngine) ManifestCreate(ctx context.Context, names, images []string, opts entities.ManifestCreateOptions) (string, error) {
+	fullNames, err := buildahUtil.ExpandNames(names, "", ir.Libpod.SystemContext(), ir.Libpod.GetStore())
+	if err != nil {
+		return "", errors.Wrapf(err, "error encountered while expanding image name %q", names)
+	}
+	imageID, err := libpodImage.CreateManifestList(ir.Libpod.ImageRuntime(), *ir.Libpod.SystemContext(), fullNames, images, opts.All)
+	if err != nil {
+		return imageID, err
+	}
+	return imageID, err
+}
+
+// ManifestInspect returns the content of a manifest list or image
+func (ir *ImageEngine) ManifestInspect(ctx context.Context, name string) ([]byte, error) {
+	dockerPrefix := fmt.Sprintf("%s://", docker.Transport.Name())
+	_, err := alltransports.ParseImageName(name)
+	if err != nil {
+		_, err = alltransports.ParseImageName(dockerPrefix + name)
+		if err != nil {
+			return nil, errors.Errorf("invalid image reference %q", name)
+		}
+	}
+	image, err := ir.Libpod.ImageRuntime().New(ctx, name, "", "", nil, nil, libpodImage.SigningOptions{}, nil, util.PullImageMissing)
+	if err != nil {
+		return nil, errors.Wrapf(err, "reading image %q", name)
+	}
+
+	list, err := image.InspectManifest()
+	if err != nil {
+		return nil, errors.Wrapf(err, "loading manifest %q", name)
+	}
+	buf, err := json.MarshalIndent(list, "", "    ")
+	if err != nil {
+		return buf, errors.Wrapf(err, "error rendering manifest for display")
+	}
+	return buf, nil
+}
+
+// ManifestAdd adds images to the manifest list
+func (ir *ImageEngine) ManifestAdd(ctx context.Context, opts entities.ManifestAddOptions) (string, error) {
+	imageSpec := opts.Images[0]
+	listImageSpec := opts.Images[1]
+	dockerPrefix := fmt.Sprintf("%s://", docker.Transport.Name())
+	_, err := alltransports.ParseImageName(imageSpec)
+	if err != nil {
+		_, err = alltransports.ParseImageName(fmt.Sprintf("%s%s", dockerPrefix, imageSpec))
+		if err != nil {
+			return "", errors.Errorf("invalid image reference %q", imageSpec)
+		}
+	}
+	listImage, err := ir.Libpod.ImageRuntime().NewFromLocal(listImageSpec)
+	if err != nil {
+		return "", errors.Wrapf(err, "error retriving local image from image name %s", listImageSpec)
+	}
+
+	manifestAddOpts := libpodImage.ManifestAddOpts{
+		All:       opts.All,
+		Arch:      opts.Arch,
+		Features:  opts.Features,
+		Images:    opts.Images,
+		OSVersion: opts.OSVersion,
+		Variant:   opts.Variant,
+	}
+	if len(opts.Annotation) != 0 {
+		annotations := make(map[string]string)
+		for _, annotationSpec := range opts.Annotation {
+			spec := strings.SplitN(annotationSpec, "=", 2)
+			if len(spec) != 2 {
+				return "", errors.Errorf("no value given for annotation %q", spec[0])
+			}
+			annotations[spec[0]] = spec[1]
+		}
+		manifestAddOpts.Annotation = annotations
+	}
+	listID, err := listImage.AddManifest(*ir.Libpod.SystemContext(), manifestAddOpts)
+	if err != nil {
+		return listID, err
+	}
+	return listID, nil
+}
-- 
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