spiegel_podman/cmd/podman/images/diff.go
Paul Holzinger 8f6a0243f4
podman diff accept two images or containers
First, make podman diff accept optionally a second argument. This allows
the user to specify a second image/container to compare the first with.
If it is not set the parent layer will be used as before.

Second, podman container diff should only use containers and podman
image diff should only use images. Previously, podman container diff
would use the image when both an image and container with this name
exists.

To make this work two new parameters have been added to the api. If they
are not used the previous behaviour is used. The same applies to the
bindings.

Fixes #10649

Signed-off-by: Paul Holzinger <pholzing@redhat.com>
2021-07-02 17:11:56 +02:00

49 lines
1.6 KiB
Go

package images
import (
"github.com/containers/podman/v3/cmd/podman/common"
"github.com/containers/podman/v3/cmd/podman/diff"
"github.com/containers/podman/v3/cmd/podman/registry"
"github.com/containers/podman/v3/libpod/define"
"github.com/containers/podman/v3/pkg/domain/entities"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
var (
// podman container _inspect_
diffCmd = &cobra.Command{
Use: "diff [options] IMAGE [IMAGE]",
Args: cobra.RangeArgs(1, 2),
Short: "Inspect changes to the image's file systems",
Long: `Displays changes to the image's filesystem. The image will be compared to its parent layer or the second argument when given.`,
RunE: diffRun,
ValidArgsFunction: common.AutocompleteImages,
Example: `podman image diff myImage
podman image diff --format json redis:alpine`,
}
diffOpts *entities.DiffOptions
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: diffCmd,
Parent: imageCmd,
})
diffFlags(diffCmd.Flags())
}
func diffFlags(flags *pflag.FlagSet) {
diffOpts = &entities.DiffOptions{}
flags.BoolVar(&diffOpts.Archive, "archive", true, "Save the diff as a tar archive")
_ = flags.MarkDeprecated("archive", "Provided for backwards compatibility, has no impact on output.")
formatFlagName := "format"
flags.StringVar(&diffOpts.Format, formatFlagName, "", "Change the output format (json)")
_ = diffCmd.RegisterFlagCompletionFunc(formatFlagName, common.AutocompleteFormat(nil))
}
func diffRun(cmd *cobra.Command, args []string) error {
diffOpts.Type = define.DiffImage
return diff.Diff(cmd, args, *diffOpts)
}