package main import ( "fmt" "github.com/containers/podman/v2/cmd/podman/containers" "github.com/containers/podman/v2/cmd/podman/images" "github.com/containers/podman/v2/cmd/podman/registry" "github.com/containers/podman/v2/cmd/podman/validate" "github.com/containers/podman/v2/pkg/domain/entities" "github.com/spf13/cobra" ) // Inspect is one of the outlier commands in that it operates on images/containers/... var ( // Command: podman _diff_ Object_ID diffDescription = `Displays changes on a container or image's filesystem. The container or image will be compared to its parent layer.` diffCmd = &cobra.Command{ Use: "diff [flags] {CONTAINER_ID | IMAGE_ID}", Args: validate.IDOrLatestArgs, Short: "Display the changes to the object's file system", Long: diffDescription, RunE: diff, Example: `podman diff imageID podman diff ctrID podman 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, }) 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") validate.AddLatestFlag(diffCmd, &diffOpts.Latest) } func diff(cmd *cobra.Command, args []string) error { // Latest implies looking for a container if diffOpts.Latest { return containers.Diff(cmd, args, diffOpts) } options := entities.ContainerExistsOptions{ External: true, } if found, err := registry.ContainerEngine().ContainerExists(registry.GetContext(), args[0], options); err != nil { return err } else if found.Value { return containers.Diff(cmd, args, diffOpts) } if found, err := registry.ImageEngine().Exists(registry.GetContext(), args[0]); err != nil { return err } else if found.Value { return images.Diff(cmd, args, diffOpts) } return fmt.Errorf("%s not found on system", args[0]) }