summaryrefslogtreecommitdiff
path: root/cmd/podman/images/diff.go
diff options
context:
space:
mode:
Diffstat (limited to 'cmd/podman/images/diff.go')
-rw-r--r--cmd/podman/images/diff.go62
1 files changed, 62 insertions, 0 deletions
diff --git a/cmd/podman/images/diff.go b/cmd/podman/images/diff.go
new file mode 100644
index 000000000..dd98dc4d6
--- /dev/null
+++ b/cmd/podman/images/diff.go
@@ -0,0 +1,62 @@
+package images
+
+import (
+ "github.com/containers/libpod/cmd/podman/registry"
+ "github.com/containers/libpod/cmd/podman/report"
+ "github.com/containers/libpod/pkg/domain/entities"
+ "github.com/pkg/errors"
+ "github.com/spf13/cobra"
+)
+
+var (
+ // podman container _inspect_
+ diffCmd = &cobra.Command{
+ Use: "diff [flags] CONTAINER",
+ Args: registry.IdOrLatestArgs,
+ Short: "Inspect changes on image's file systems",
+ Long: `Displays changes on a image's filesystem. The image will be compared to its parent layer.`,
+ RunE: diff,
+ Example: `podman image diff myImage
+ podman image diff --format json redis:alpine`,
+ }
+ diffOpts *entities.DiffOptions
+)
+
+func init() {
+ registry.Commands = append(registry.Commands, registry.CliCommand{
+ Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+ Command: diffCmd,
+ Parent: imageCmd,
+ })
+
+ diffOpts = &entities.DiffOptions{}
+ flags := diffCmd.Flags()
+ flags.BoolVar(&diffOpts.Archive, "archive", true, "Save the diff as a tar archive")
+ _ = flags.MarkHidden("archive")
+ flags.StringVar(&diffOpts.Format, "format", "", "Change the output format")
+}
+
+func diff(cmd *cobra.Command, args []string) error {
+ if len(args) == 0 && !diffOpts.Latest {
+ return errors.New("image must be specified: podman image diff [options [...]] ID-NAME")
+ }
+
+ results, err := registry.ImageEngine().Diff(registry.GetContext(), args[0], entities.DiffOptions{})
+ if err != nil {
+ return err
+ }
+
+ switch diffOpts.Format {
+ case "":
+ return report.ChangesToTable(results)
+ case "json":
+ return report.ChangesToJSON(results)
+ default:
+ return errors.New("only supported value for '--format' is 'json'")
+ }
+}
+
+func Diff(cmd *cobra.Command, args []string, options entities.DiffOptions) error {
+ diffOpts = &options
+ return diff(cmd, args)
+}