podman-remote load image

enable the ability to load an image into remote storage
using the remote client.

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

cmd/podman/commands.go

@@ -17,7 +17,6 @@ func getMainCommands() []*cobra.Command {
 		generateCommand.Command,
 		_containerKubeCommand,
 		_psCommand,
-		_loadCommand,
 		_loginCommand,
 		_logoutCommand,
 		_logsCommand,

cmd/podman/image.go

@@ -24,6 +24,7 @@ var imageSubCommands = []*cobra.Command{
 	_imagesCommand,
 	_importCommand,
 	_inspectCommand,
+	_loadCommand,
 	_pruneImagesCommand,
 	_pullCommand,
 	_pushCommand,

cmd/podman/load.go

@@ -6,12 +6,8 @@ import (
 	"io/ioutil"
 	"os"
 
-	"github.com/containers/image/directory"
-	dockerarchive "github.com/containers/image/docker/archive"
-	ociarchive "github.com/containers/image/oci/archive"
 	"github.com/containers/libpod/cmd/podman/cliconfig"
-	"github.com/containers/libpod/cmd/podman/libpodruntime"
-	"github.com/containers/libpod/libpod/image"
+	"github.com/containers/libpod/libpod/adapter"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
@@ -56,14 +52,16 @@ func loadCmd(c *cliconfig.LoadValues) error {
 		return errors.New("too many arguments. Requires exactly 1")
 	}
 
-	runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
+	runtime, err := adapter.GetRuntime(&c.PodmanCommand)
 	if err != nil {
 		return errors.Wrapf(err, "could not get runtime")
 	}
 	defer runtime.Shutdown(false)
 
 	input := c.Input
-
+	if runtime.Remote && len(input) == 0 {
+		return errors.New("the remote client requires you to load via -i and a tarball")
+	}
 	if input == "/dev/stdin" {
 		fi, err := os.Stdin.Stat()
 		if err != nil {
@@ -96,46 +94,10 @@ func loadCmd(c *cliconfig.LoadValues) error {
 		return err
 	}
 
-	var writer io.Writer
-	if !c.Quiet {
-		writer = os.Stderr
-	}
-
-	ctx := getContext()
-
-	var newImages []*image.Image
-	src, err := dockerarchive.ParseReference(input) // FIXME? We should add dockerarchive.NewReference()
-	if err == nil {
-		newImages, err = runtime.ImageRuntime().LoadFromArchiveReference(ctx, src, c.SignaturePolicy, writer)
-	}
+	names, err := runtime.LoadImage(getContext(), imageName, c)
 	if err != nil {
-		// generate full src name with specified image:tag
-		src, err := ociarchive.NewReference(input, imageName) // imageName may be ""
-		if err == nil {
-			newImages, err = runtime.ImageRuntime().LoadFromArchiveReference(ctx, src, c.SignaturePolicy, writer)
-		}
-		if err != nil {
-			src, err := directory.NewReference(input)
-			if err == nil {
-				newImages, err = runtime.ImageRuntime().LoadFromArchiveReference(ctx, src, c.SignaturePolicy, writer)
-			}
-			if err != nil {
-				return errors.Wrapf(err, "error pulling %q", input)
-			}
-		}
+		return err
 	}
-	fmt.Println("Loaded image(s): " + getImageNames(newImages))
+	fmt.Println("Loaded image(s): " + names)
 	return nil
 }
-
-func getImageNames(images []*image.Image) string {
-	var names string
-	for i := range images {
-		if i == 0 {
-			names = images[i].InputName
-		} else {
-			names += ", " + images[i].InputName
-		}
-	}
-	return names
-}

cmd/podman/main.go

@@ -45,6 +45,7 @@ var mainCommands = []*cobra.Command{
 	_infoCommand,
 	_inspectCommand,
 	_killCommand,
+	_loadCommand,
 	podCommand.Command,
 	_pullCommand,
 	_pushCommand,

cmd/podman/varlink/io.podman.varlink

@@ -1102,8 +1102,11 @@ method VolumesPrune() -> (prunedNames: []string, prunedErrors: []string)
 
 method ImageSave(options: ImageSaveOptions) -> (reply: MoreResponse)
 
+
 method GetPodsByContext(all: bool, latest: bool, args: []string) -> (pods: []string)
 
+method LoadImage(name: string, inputFile: string, quiet: bool, deleteFile: bool) -> (reply: MoreResponse)
+
 # ImageNotFound means the image could not be found by the provided name or ID in local storage.
 error ImageNotFound (id: string)
 

libpod/adapter/runtime.go

@@ -322,3 +322,14 @@ func (r *LocalRuntime) SaveImage(ctx context.Context, c *cliconfig.SaveValues) e
 	}
 	return newImage.Save(ctx, source, c.Format, c.Output, additionalTags, c.Quiet, c.Compress)
 }
+
+// LoadImage is a wrapper function for libpod PruneVolumes
+func (r *LocalRuntime) LoadImage(ctx context.Context, name string, cli *cliconfig.LoadValues) (string, error) {
+	var (
+		writer io.Writer
+	)
+	if !cli.Quiet {
+		writer = os.Stderr
+	}
+	return r.Runtime.LoadImage(ctx, name, cli.Input, writer, cli.SignaturePolicy)
+}

libpod/adapter/runtime_remote.go

@@ -486,7 +486,7 @@ func (r *LocalRuntime) Build(ctx context.Context, c *cliconfig.BuildValues, opti
 	if err != nil {
 		return err
 	}
-	buildinfo.ContextDir = strings.Replace(tempFile, ":", "", -1)
+	buildinfo.ContextDir = tempFile
 
 	reply, err := iopodman.BuildImage().Send(r.Conn, varlink.More, buildinfo)
 	if err != nil {
@@ -549,7 +549,7 @@ func (r *LocalRuntime) SendFileOverVarlink(source string) (string, error) {
 
 	}
 
-	return tempFile, nil
+	return strings.Replace(tempFile, ":", "", -1), nil
 }
 
 // GetAllVolumes retrieves all the volumes
@@ -763,3 +763,36 @@ func (r *LocalRuntime) SaveImage(ctx context.Context, c *cliconfig.SaveValues) e
 	}
 	return nil
 }
+
+// LoadImage loads a container image from a remote client's filesystem
+func (r *LocalRuntime) LoadImage(ctx context.Context, name string, cli *cliconfig.LoadValues) (string, error) {
+	var names string
+	remoteTempFile, err := r.SendFileOverVarlink(cli.Input)
+	if err != nil {
+		return "", nil
+	}
+	more := varlink.More
+	if cli.Quiet {
+		more = 0
+	}
+	reply, err := iopodman.LoadImage().Send(r.Conn, uint64(more), name, remoteTempFile, cli.Quiet, true)
+	if err != nil {
+		return "", err
+	}
+
+	for {
+		responses, flags, err := reply()
+		if err != nil {
+			logrus.Error(err)
+			return "", err
+		}
+		for _, line := range responses.Logs {
+			fmt.Print(line)
+		}
+		names = responses.Id
+		if flags&varlink.Continues == 0 {
+			break
+		}
+	}
+	return names, nil
+}

libpod/image/image.go

@@ -32,7 +32,7 @@ import (
 	digest "github.com/opencontainers/go-digest"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
 	ociv1 "github.com/opencontainers/image-spec/specs-go/v1"
-	opentracing "github.com/opentracing/opentracing-go"
+	"github.com/opentracing/opentracing-go"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )

libpod/runtime_img.go

@@ -3,7 +3,6 @@ package libpod
 import (
 	"context"
 	"fmt"
-	"github.com/opencontainers/image-spec/specs-go/v1"
 	"io"
 	"io/ioutil"
 	"net/http"
@@ -15,6 +14,11 @@ import (
 	"github.com/containers/libpod/pkg/util"
 	"github.com/containers/storage"
 	"github.com/pkg/errors"
+
+	"github.com/containers/image/directory"
+	dockerarchive "github.com/containers/image/docker/archive"
+	ociarchive "github.com/containers/image/oci/archive"
+	"github.com/opencontainers/image-spec/specs-go/v1"
 )
 
 // Runtime API
@@ -211,3 +215,41 @@ func downloadFromURL(source string) (string, error) {
 
 	return outFile.Name(), nil
 }
+
+// LoadImage loads a container image into local storage
+func (r *Runtime) LoadImage(ctx context.Context, name, inputFile string, writer io.Writer, signaturePolicy string) (string, error) {
+	var newImages []*image.Image
+	src, err := dockerarchive.ParseReference(inputFile) // FIXME? We should add dockerarchive.NewReference()
+	if err == nil {
+		newImages, err = r.ImageRuntime().LoadFromArchiveReference(ctx, src, signaturePolicy, writer)
+	}
+	if err != nil {
+		// generate full src name with specified image:tag
+		src, err := ociarchive.NewReference(inputFile, name) // imageName may be ""
+		if err == nil {
+			newImages, err = r.ImageRuntime().LoadFromArchiveReference(ctx, src, signaturePolicy, writer)
+		}
+		if err != nil {
+			src, err := directory.NewReference(inputFile)
+			if err == nil {
+				newImages, err = r.ImageRuntime().LoadFromArchiveReference(ctx, src, signaturePolicy, writer)
+			}
+			if err != nil {
+				return "", errors.Wrapf(err, "error pulling %q", name)
+			}
+		}
+	}
+	return getImageNames(newImages), nil
+}
+
+func getImageNames(images []*image.Image) string {
+	var names string
+	for i := range images {
+		if i == 0 {
+			names = images[i].InputName
+		} else {
+			names += ", " + images[i].InputName
+		}
+	}
+	return names
+}

pkg/varlinkapi/images.go

@@ -776,9 +776,6 @@ func (i *LibpodAPI) ImageSave(call iopodman.VarlinkCall, options iopodman.ImageS
 		c <- err
 		close(c)
 	}()
-
-	// TODO When pull output gets fixed for the remote client, we need to look into how we can turn below
-	// into something re-usable.  it is in build too
 	var log []string
 	done := false
 	for {
@@ -835,3 +832,73 @@ func (i *LibpodAPI) ImageSave(call iopodman.VarlinkCall, options iopodman.ImageS
 	}
 	return call.ReplyPushImage(br)
 }
+
+// LoadImage ...
+func (i *LibpodAPI) LoadImage(call iopodman.VarlinkCall, name, inputFile string, deleteInputFile, quiet bool) error {
+	var (
+		names  string
+		writer io.Writer
+		err    error
+	)
+	if !quiet {
+		writer = os.Stderr
+	}
+
+	if call.WantsMore() {
+		call.Continues = true
+	}
+	output := bytes.NewBuffer([]byte{})
+
+	c := make(chan error)
+	go func() {
+		names, err = i.Runtime.LoadImage(getContext(), name, inputFile, writer, "")
+		c <- err
+		close(c)
+	}()
+
+	var log []string
+	done := false
+	for {
+		line, err := output.ReadString('\n')
+		if err == nil {
+			log = append(log, line)
+			continue
+		} else if err == io.EOF {
+			select {
+			case err := <-c:
+				if err != nil {
+					logrus.Error(err)
+					return call.ReplyErrorOccurred(err.Error())
+				}
+				done = true
+			default:
+				if !call.WantsMore() {
+					time.Sleep(1 * time.Second)
+					break
+				}
+				br := iopodman.MoreResponse{
+					Logs: log,
+				}
+				call.ReplyLoadImage(br)
+				log = []string{}
+			}
+		} else {
+			return call.ReplyErrorOccurred(err.Error())
+		}
+		if done {
+			break
+		}
+	}
+	call.Continues = false
+
+	br := iopodman.MoreResponse{
+		Logs: log,
+		Id:   names,
+	}
+	if deleteInputFile {
+		if err := os.Remove(inputFile); err != nil {
+			logrus.Errorf("unable to delete input file %s", inputFile)
+		}
+	}
+	return call.ReplyLoadImage(br)
+}

test/e2e/load_test.go

@@ -199,11 +199,9 @@ var _ = Describe("Podman load", func() {
 
 	It("podman load localhost registry from scratch and :latest", func() {
 		outfile := filepath.Join(podmanTest.TempDir, "load_test.tar.gz")
-		setup := podmanTest.Podman([]string{"pull", fedoraMinimal})
-		setup.WaitWithDefaultTimeout()
-		Expect(setup.ExitCode()).To(Equal(0))
+		podmanTest.RestoreArtifact("fedora-minimal:latest")
 
-		setup = podmanTest.Podman([]string{"tag", "fedora-minimal", "hello"})
+		setup := podmanTest.Podman([]string{"tag", "fedora-minimal", "hello"})
 		setup.WaitWithDefaultTimeout()
 		Expect(setup.ExitCode()).To(Equal(0))