V2 podman image tree

* Basic port of V1 podman image tree ID

TODO: Refactor to return tree from service and format in presentation
layer
TODO: Support tunneling mode

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

1 files changed, 40 insertions, 0 deletions

diff --git a/cmd/podman/images/tree.go b/cmd/podman/images/tree.go
new file mode 100644
index 000000000..5e82e9dea
--- /dev/null
+++ b/cmd/podman/images/tree.go
@@ -0,0 +1,40 @@
+package images
+
+import (
+	"fmt"
+
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/spf13/cobra"
+)
+
+var (
+	treeDescription = "Prints layer hierarchy of an image in a tree format"
+	treeCmd         = &cobra.Command{
+		Use:     "tree [flags] IMAGE",
+		Args:    cobra.ExactArgs(1),
+		Short:   treeDescription,
+		Long:    treeDescription,
+		RunE:    tree,
+		Example: "podman image tree alpine:latest",
+	}
+	treeOpts entities.ImageTreeOptions
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: treeCmd,
+		Parent:  imageCmd,
+	})
+	treeCmd.Flags().BoolVar(&treeOpts.WhatRequires, "whatrequires", false, "Show all child images and layers of the specified image")
+}
+
+func tree(_ *cobra.Command, args []string) error {
+	results, err := registry.ImageEngine().Tree(registry.Context(), args[0], treeOpts)
+	if err != nil {
+		return err
+	}
+	fmt.Println(results.Tree)
+	return nil
+}