podmanv2 import

add the ability to import a container image from a container export

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

9 files changed, 135 insertions, 12 deletions

diff --git a/cmd/podmanV2/images/import.go b/cmd/podmanV2/images/import.go
new file mode 100644
index 000000000..09a15585f
--- /dev/null
+++ b/cmd/podmanV2/images/import.go
@@ -0,0 +1,87 @@
+package images
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/containers/libpod/cmd/podmanV2/parse"
+	"github.com/containers/libpod/cmd/podmanV2/registry"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/hashicorp/go-multierror"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+var (
+	importDescription = `Create a container image from the contents of the specified tarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz).
+
+  Note remote tar balls can be specified, via web address.
+  Optionally tag the image. You can specify the instructions using the --change option.`
+	importCommand = &cobra.Command{
+		Use:               "import [flags] PATH [REFERENCE]",
+		Short:             "Import a tarball to create a filesystem image",
+		Long:              importDescription,
+		RunE:              importCon,
+		PersistentPreRunE: preRunE,
+		Example: `podman import http://example.com/ctr.tar url-image
+  cat ctr.tar | podman -q import --message "importing the ctr.tar tarball" - image-imported
+  cat ctr.tar | podman import -`,
+	}
+)
+
+var (
+	importOpts entities.ImageImportOptions
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: importCommand,
+	})
+
+	importCommand.SetHelpTemplate(registry.HelpTemplate())
+	importCommand.SetUsageTemplate(registry.UsageTemplate())
+	flags := importCommand.Flags()
+	flags.StringArrayVarP(&importOpts.Changes, "change", "c", []string{}, "Apply the following possible instructions to the created image (default []): CMD | ENTRYPOINT | ENV | EXPOSE | LABEL | STOPSIGNAL | USER | VOLUME | WORKDIR")
+	flags.StringVarP(&importOpts.Message, "message", "m", "", "Set commit message for imported image")
+	flags.BoolVarP(&importOpts.Quiet, "quiet", "q", false, "Suppress output")
+}
+
+func importCon(cmd *cobra.Command, args []string) error {
+	var (
+		source    string
+		reference string
+	)
+	switch len(args) {
+	case 0:
+		return errors.Errorf("need to give the path to the tarball, or must specify a tarball of '-' for stdin")
+	case 1:
+		source = args[0]
+	case 2:
+		source = args[0]
+		// TODO when save is merged, we need to process reference
+		// like it is done in there or we end up with docker.io prepends
+		// instead of the localhost ones
+		reference = args[1]
+	default:
+		return errors.Errorf("too many arguments. Usage TARBALL [REFERENCE]")
+	}
+	errFileName := parse.ValidateFileName(source)
+	errURL := parse.ValidURL(source)
+	if errURL == nil {
+		importOpts.SourceIsURL = true
+	}
+	if errFileName != nil && errURL != nil {
+		return multierror.Append(errFileName, errURL)
+	}
+
+	importOpts.Source = source
+	importOpts.Reference = reference
+
+	response, err := registry.ImageEngine().Import(context.Background(), importOpts)
+	if err != nil {
+		return err
+	}
+	fmt.Println(response.Id)
+	return nil
+}
diff --git a/pkg/api/handlers/libpod/images.go b/pkg/api/handlers/libpod/images.go
index 19c6102be..d4fd77cd7 100644
--- a/pkg/api/handlers/libpod/images.go
+++ b/pkg/api/handlers/libpod/images.go
@@ -300,7 +300,7 @@ func ImagesImport(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	utils.WriteResponse(w, http.StatusOK, handlers.LibpodImagesImportReport{ID: importedImage})
+	utils.WriteResponse(w, http.StatusOK, entities.ImageImportReport{Id: importedImage})
 }
 
 // ImagesPull is the v2 libpod endpoint for pulling images.  Note that the
diff --git a/pkg/api/handlers/swagger.go b/pkg/api/handlers/swagger.go
index 12de3a3bd..33a9fdd58 100644
--- a/pkg/api/handlers/swagger.go
+++ b/pkg/api/handlers/swagger.go
@@ -38,7 +38,7 @@ type swagLibpodImagesLoadResponse struct {
 // swagger:response DocsLibpodImagesImportResponse
 type swagLibpodImagesImportResponse struct {
 	// in:body
-	Body LibpodImagesImportReport
+	Body entities.ImageImportReport
 }
 
 // Pull response
diff --git a/pkg/api/handlers/types.go b/pkg/api/handlers/types.go
index 89a571e67..496512f2e 100644
--- a/pkg/api/handlers/types.go
+++ b/pkg/api/handlers/types.go
@@ -38,10 +38,6 @@ type LibpodImagesLoadReport struct {
 	ID string `json:"id"`
 }
 
-type LibpodImagesImportReport struct {
-	ID string `json:"id"`
-}
-
 type LibpodImagesPullReport struct {
 	ID string `json:"id"`
 }
diff --git a/pkg/bindings/images/images.go b/pkg/bindings/images/images.go
index 6c739494b..470ce546c 100644
--- a/pkg/bindings/images/images.go
+++ b/pkg/bindings/images/images.go
@@ -217,14 +217,14 @@ func Build(nameOrId string) {}
 // Imports adds the given image to the local image store.  This can be done by file and the given reader
 // or via the url parameter.  Additional metadata can be associated with the image by using the changes and
 // message parameters.  The image can also be tagged given a reference. One of url OR r must be provided.
-func Import(ctx context.Context, changes []string, message, reference, u *string, r io.Reader) (string, error) {
-	var id handlers.IDResponse
+func Import(ctx context.Context, changes []string, message, reference, u *string, r io.Reader) (*entities.ImageImportReport, error) {
+	var report entities.ImageImportReport
 	if r != nil && u != nil {
-		return "", errors.New("url and r parameters cannot be used together")
+		return nil, errors.New("url and r parameters cannot be used together")
 	}
 	conn, err := bindings.GetClient(ctx)
 	if err != nil {
-		return "", err
+		return nil, err
 	}
 	params := url.Values{}
 	for _, change := range changes {
@@ -241,9 +241,9 @@ func Import(ctx context.Context, changes []string, message, reference, u *string
 	}
 	response, err := conn.DoRequest(r, http.MethodPost, "/images/import", params)
 	if err != nil {
-		return "", err
+		return nil, err
 	}
-	return id.ID, response.Process(&id)
+	return &report, response.Process(&report)
 }
 
 // Pull is the binding for libpod's v2 endpoints for pulling images.  Note that
diff --git a/pkg/domain/entities/engine_image.go b/pkg/domain/entities/engine_image.go
index 4cc2a67b9..ac856c05f 100644
--- a/pkg/domain/entities/engine_image.go
+++ b/pkg/domain/entities/engine_image.go
@@ -15,4 +15,5 @@ type ImageEngine interface {
 	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)
+	Import(ctx context.Context, opts ImageImportOptions) (*ImageImportReport, error)
 }
diff --git a/pkg/domain/entities/images.go b/pkg/domain/entities/images.go
index a6c7baebd..d136f42fd 100644
--- a/pkg/domain/entities/images.go
+++ b/pkg/domain/entities/images.go
@@ -184,3 +184,16 @@ type ImageLoadOptions struct {
 type ImageLoadReport struct {
 	Name string
 }
+
+type ImageImportOptions struct {
+	Changes     []string
+	Message     string
+	Quiet       bool
+	Reference   string
+	Source      string
+	SourceIsURL bool
+}
+
+type ImageImportReport struct {
+	Id string
+}
diff --git a/pkg/domain/infra/abi/images.go b/pkg/domain/infra/abi/images.go
index c3a2bb288..f8c63730c 100644
--- a/pkg/domain/infra/abi/images.go
+++ b/pkg/domain/infra/abi/images.go
@@ -303,6 +303,7 @@ func (ir *ImageEngine) Tag(ctx context.Context, nameOrId string, tags []string,
 	}
 	return nil
 }
+
 func (ir *ImageEngine) Untag(ctx context.Context, nameOrId string, tags []string, options entities.ImageUntagOptions) error {
 	newImage, err := ir.Libpod.ImageRuntime().NewFromLocal(nameOrId)
 	if err != nil {
@@ -336,3 +337,11 @@ func (ir *ImageEngine) Load(ctx context.Context, opts entities.ImageLoadOptions)
 	}
 	return &entities.ImageLoadReport{Name: name}, nil
 }
+
+func (ir *ImageEngine) Import(ctx context.Context, opts entities.ImageImportOptions) (*entities.ImageImportReport, error) {
+	id, err := ir.Libpod.Import(ctx, opts.Source, opts.Reference, opts.Changes, opts.Message, opts.Quiet)
+	if err != nil {
+		return nil, err
+	}
+	return &entities.ImageImportReport{Id: id}, nil
+}
diff --git a/pkg/domain/infra/tunnel/images.go b/pkg/domain/infra/tunnel/images.go
index a4a0fccaf..155f5e4bd 100644
--- a/pkg/domain/infra/tunnel/images.go
+++ b/pkg/domain/infra/tunnel/images.go
@@ -167,3 +167,20 @@ func (ir *ImageEngine) Load(ctx context.Context, opts entities.ImageLoadOptions)
 	defer f.Close()
 	return images.Load(ir.ClientCxt, f, &opts.Name)
 }
+
+func (ir *ImageEngine) Import(ctx context.Context, opts entities.ImageImportOptions) (*entities.ImageImportReport, error) {
+	var (
+		err       error
+		sourceURL *string
+		f         *os.File
+	)
+	if opts.SourceIsURL {
+		sourceURL = &opts.Source
+	} else {
+		f, err = os.Open(opts.Source)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return images.Import(ir.ClientCxt, opts.Changes, &opts.Message, &opts.Reference, sourceURL, f)
+}