V2 podman image

* Exists()

Signed-off-by: Jhon Honce <jhonce@redhat.com>

cmd/podmanV2/images/exists.go

@@ -0,0 +1,40 @@
+package images
+
+import (
+	"os"
+
+	"github.com/containers/libpod/cmd/podmanV2/registry"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/spf13/cobra"
+)
+
+var (
+	existsCmd = &cobra.Command{
+		Use:   "exists IMAGE",
+		Short: "Check if an image exists in local storage",
+		Long:  `If the named image exists in local storage, podman image exists exits with 0, otherwise the exit code will be 1.`,
+		Example: `podman image exists ID
+  podman image exists IMAGE && podman pull IMAGE`,
+		Args: cobra.ExactArgs(1),
+		RunE: exists,
+	}
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: existsCmd,
+		Parent:  imageCmd,
+	})
+}
+
+func exists(cmd *cobra.Command, args []string) error {
+	found, err := registry.ImageEngine().Exists(registry.GetContext(), args[0])
+	if err != nil {
+		return err
+	}
+	if !found.Value {
+		os.Exit(1)
+	}
+	return nil
+}

pkg/domain/entities/engine_image.go

@@ -6,6 +6,7 @@ import (
 
 type ImageEngine interface {
 	Delete(ctx context.Context, nameOrId string, opts ImageDeleteOptions) (*ImageDeleteReport, error)
+	Exists(ctx context.Context, nameOrId string) (*BoolReport, error)
 	History(ctx context.Context, nameOrId string, opts ImageHistoryOptions) (*ImageHistoryReport, error)
 	List(ctx context.Context, opts ImageListOptions) ([]*ImageSummary, error)
 	Prune(ctx context.Context, opts ImagePruneOptions) (*ImagePruneReport, error)

pkg/domain/infra/abi/images.go

@@ -10,6 +10,13 @@ import (
 	"github.com/containers/libpod/pkg/domain/utils"
 )
 
+func (ir *ImageEngine) Exists(_ context.Context, nameOrId string) (*entities.BoolReport, error) {
+	if _, err := ir.Libpod.ImageRuntime().NewFromLocal(nameOrId); err != nil {
+		return &entities.BoolReport{}, nil
+	}
+	return &entities.BoolReport{Value: true}, nil
+}
+
 func (ir *ImageEngine) Delete(ctx context.Context, nameOrId string, opts entities.ImageDeleteOptions) (*entities.ImageDeleteReport, error) {
 	image, err := ir.Libpod.ImageRuntime().NewFromLocal(nameOrId)
 	if err != nil {

pkg/domain/infra/tunnel/images.go

@@ -9,6 +9,11 @@ import (
 	"github.com/containers/libpod/pkg/domain/utils"
 )
 
+func (ir *ImageEngine) Exists(_ context.Context, nameOrId string) (*entities.BoolReport, error) {
+	found, err := images.Exists(ir.ClientCxt, nameOrId)
+	return &entities.BoolReport{Value: found}, err
+}
+
 func (ir *ImageEngine) Delete(ctx context.Context, nameOrId string, opts entities.ImageDeleteOptions) (*entities.ImageDeleteReport, error) {
 	results, err := images.Remove(ir.ClientCxt, nameOrId, &opts.Force)
 	if err != nil {