podmanv2 load

enable podman load for v2

add reexec into main

add systemd build flag to v2 makefile

Signed-off-by: Brent Baude <bbaude@redhat.com>

cmd/podmanV2/Makefile

@@ -1,2 +1,2 @@
 all:
-	GO111MODULE=off go build -tags 'ABISupport'
+	GO111MODULE=off go build -tags 'ABISupport systemd'

cmd/podmanV2/images/load.go

@@ -0,0 +1,61 @@
+package images
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/containers/libpod/cmd/podmanV2/registry"
+	"github.com/containers/libpod/libpod/image"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/spf13/cobra"
+)
+
+var (
+	loadDescription = "Loads an image from a locally stored archive (tar file) into container storage."
+	loadCommand     = &cobra.Command{
+		Use:               "load [flags] [NAME[:TAG]]",
+		Short:             "Load an image from container archive",
+		Long:              loadDescription,
+		RunE:              load,
+		Args:              cobra.MaximumNArgs(1),
+		PersistentPreRunE: preRunE,
+	}
+)
+
+var (
+	loadOpts entities.ImageLoadOptions
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: loadCommand,
+	})
+
+	loadCommand.SetHelpTemplate(registry.HelpTemplate())
+	loadCommand.SetUsageTemplate(registry.UsageTemplate())
+	flags := loadCommand.Flags()
+	flags.StringVarP(&loadOpts.Input, "input", "i", "", "Read from specified archive file (default: stdin)")
+	flags.BoolVarP(&loadOpts.Quiet, "quiet", "q", false, "Suppress the output")
+	flags.StringVar(&loadOpts.SignaturePolicy, "signature-policy", "", "Pathname of signature policy file")
+	if registry.IsRemote() {
+		_ = flags.MarkHidden("signature-policy")
+	}
+
+}
+
+func load(cmd *cobra.Command, args []string) error {
+	if len(args) > 0 {
+		repo, err := image.NormalizedTag(args[0])
+		if err != nil {
+			return err
+		}
+		loadOpts.Name = repo.Name()
+	}
+	response, err := registry.ImageEngine().Load(context.Background(), loadOpts)
+	if err != nil {
+		return err
+	}
+	fmt.Println("Loaded image: " + response.Name)
+	return nil
+}

cmd/podmanV2/main.go

@@ -15,6 +15,7 @@ import (
 	_ "github.com/containers/libpod/cmd/podmanV2/volumes"
 	"github.com/containers/libpod/libpod"
 	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/containers/storage/pkg/reexec"
 	"github.com/sirupsen/logrus"
 )
 
@@ -45,6 +46,11 @@ func init() {
 }
 
 func main() {
+	if reexec.Init() {
+		// We were invoked with a different argv[0] indicating that we
+		// had a specific job to do as a subprocess, and it's done.
+		return
+	}
 	for _, c := range registry.Commands {
 		if Contains(registry.EngineOptions.EngineMode, c.Mode) {
 			parent := rootCmd

libpod/image/image.go

@@ -512,8 +512,8 @@ func getImageDigest(ctx context.Context, src types.ImageReference, sc *types.Sys
 	return "@" + imageDigest.Hex(), nil
 }
 
-// normalizedTag returns the canonical version of tag for use in Image.Names()
-func normalizedTag(tag string) (reference.Named, error) {
+// NormalizedTag returns the canonical version of tag for use in Image.Names()
+func NormalizedTag(tag string) (reference.Named, error) {
 	decomposedTag, err := decompose(tag)
 	if err != nil {
 		return nil, err
@@ -541,7 +541,7 @@ func (i *Image) TagImage(tag string) error {
 	if err := i.reloadImage(); err != nil {
 		return err
 	}
-	ref, err := normalizedTag(tag)
+	ref, err := NormalizedTag(tag)
 	if err != nil {
 		return err
 	}

libpod/image/image_test.go

@@ -292,7 +292,7 @@ func TestNormalizedTag(t *testing.T) {
 		{"ns/busybox:latest", "localhost/ns/busybox:latest"},                                             // Unqualified with a dot-less namespace
 		{"docker.io/busybox:latest", "docker.io/library/busybox:latest"},                                 // docker.io without /library/
 	} {
-		res, err := normalizedTag(c.input)
+		res, err := NormalizedTag(c.input)
 		if c.expected == "" {
 			assert.Error(t, err, c.input)
 		} else {

pkg/api/handlers/libpod/images.go

@@ -254,7 +254,7 @@ func ImagesLoad(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 	}
-	utils.WriteResponse(w, http.StatusOK, handlers.LibpodImagesLoadReport{ID: loadedImage})
+	utils.WriteResponse(w, http.StatusOK, entities.ImageLoadReport{Name: loadedImage})
 }
 
 func ImagesImport(w http.ResponseWriter, r *http.Request) {

pkg/api/handlers/swagger.go

@@ -31,7 +31,7 @@ type swagImageInspect struct {
 // swagger:response DocsLibpodImagesLoadResponse
 type swagLibpodImagesLoadResponse struct {
 	// in:body
-	Body []LibpodImagesLoadReport
+	Body entities.ImageLoadReport
 }
 
 // Import response

pkg/bindings/images/images.go

@@ -91,11 +91,11 @@ func History(ctx context.Context, nameOrID string) ([]*handlers.HistoryResponse,
 	return history, response.Process(&history)
 }
 
-func Load(ctx context.Context, r io.Reader, name *string) (string, error) {
-	var id handlers.IDResponse
+func Load(ctx context.Context, r io.Reader, name *string) (*entities.ImageLoadReport, error) {
+	var report entities.ImageLoadReport
 	conn, err := bindings.GetClient(ctx)
 	if err != nil {
-		return "", err
+		return nil, err
 	}
 	params := url.Values{}
 	if name != nil {
@@ -103,9 +103,9 @@ func Load(ctx context.Context, r io.Reader, name *string) (string, error) {
 	}
 	response, err := conn.DoRequest(r, http.MethodPost, "/images/load", params)
 	if err != nil {
-		return "", err
+		return nil, err
 	}
-	return id.ID, response.Process(&id)
+	return &report, response.Process(&report)
 }
 
 // Remove deletes an image from local storage.  The optional force parameter will forcibly remove

pkg/bindings/test/images_test.go

@@ -219,7 +219,7 @@ var _ = Describe("Podman images", func() {
 		Expect(err).To(BeNil())
 		names, err := images.Load(bt.conn, f, nil)
 		Expect(err).To(BeNil())
-		Expect(names).To(Equal(alpine.name))
+		Expect(names.Name).To(Equal(alpine.name))
 		exists, err = images.Exists(bt.conn, alpine.name)
 		Expect(err).To(BeNil())
 		Expect(exists).To(BeTrue())
@@ -235,7 +235,7 @@ var _ = Describe("Podman images", func() {
 		newName := "quay.io/newname:fizzle"
 		names, err = images.Load(bt.conn, f, &newName)
 		Expect(err).To(BeNil())
-		Expect(names).To(Equal(alpine.name))
+		Expect(names.Name).To(Equal(alpine.name))
 		exists, err = images.Exists(bt.conn, newName)
 		Expect(err).To(BeNil())
 		Expect(exists).To(BeTrue())

pkg/domain/entities/engine_image.go

@@ -14,4 +14,5 @@ type ImageEngine interface {
 	Pull(ctx context.Context, rawImage string, opts ImagePullOptions) (*ImagePullReport, error)
 	Tag(ctx context.Context, nameOrId string, tags []string, options ImageTagOptions) error
 	Untag(ctx context.Context, nameOrId string, tags []string, options ImageUntagOptions) error
+	Load(ctx context.Context, opts ImageLoadOptions) (*ImageLoadReport, error)
 }

pkg/domain/entities/images.go

@@ -172,3 +172,15 @@ type ImageInspectReport struct {
 	Images []*ImageData
 	Errors map[string]error
 }
+
+type ImageLoadOptions struct {
+	Name            string
+	Tag             string
+	Input           string
+	Quiet           bool
+	SignaturePolicy string
+}
+
+type ImageLoadReport struct {
+	Name string
+}

pkg/domain/infra/abi/images.go

@@ -315,3 +315,24 @@ func (ir *ImageEngine) Untag(ctx context.Context, nameOrId string, tags []string
 	}
 	return nil
 }
+
+func (ir *ImageEngine) Load(ctx context.Context, opts entities.ImageLoadOptions) (*entities.ImageLoadReport, error) {
+	var (
+		writer io.Writer
+	)
+	if !opts.Quiet {
+		writer = os.Stderr
+	}
+	name, err := ir.Libpod.LoadImage(ctx, opts.Name, opts.Input, writer, opts.SignaturePolicy)
+	if err != nil {
+		return nil, err
+	}
+	newImage, err := ir.Libpod.ImageRuntime().NewFromLocal(name)
+	if err != nil {
+		return nil, errors.Wrap(err, "image loaded but no additional tags were created")
+	}
+	if err := newImage.TagImage(opts.Name); err != nil {
+		return nil, errors.Wrapf(err, "error adding %q to image %q", opts.Name, newImage.InputName)
+	}
+	return &entities.ImageLoadReport{Name: name}, nil
+}

pkg/domain/infra/tunnel/images.go

@@ -2,6 +2,7 @@ package tunnel
 
 import (
 	"context"
+	"os"
 
 	"github.com/containers/image/v5/docker/reference"
 	images "github.com/containers/libpod/pkg/bindings/images"
@@ -157,3 +158,12 @@ func (ir *ImageEngine) Inspect(_ context.Context, names []string, opts entities.
 	}
 	return &report, nil
 }
+
+func (ir *ImageEngine) Load(ctx context.Context, opts entities.ImageLoadOptions) (*entities.ImageLoadReport, error) {
+	f, err := os.Open(opts.Input)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+	return images.Load(ir.ClientCxt, f, &opts.Name)
+}