From 8f6a0243f4b7f861a116c0dba5967b3cfe23d61f Mon Sep 17 00:00:00 2001 From: Paul Holzinger Date: Thu, 1 Jul 2021 15:24:20 +0200 Subject: 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 --- cmd/podman/images/diff.go | 40 ++++++++++------------------------------ 1 file changed, 10 insertions(+), 30 deletions(-) (limited to 'cmd/podman/images/diff.go') diff --git a/cmd/podman/images/diff.go b/cmd/podman/images/diff.go index 2e883d7ae..825aab362 100644 --- a/cmd/podman/images/diff.go +++ b/cmd/podman/images/diff.go @@ -1,11 +1,11 @@ package images import ( - "github.com/containers/common/pkg/report" "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/pkg/errors" "github.com/spf13/cobra" "github.com/spf13/pflag" ) @@ -13,11 +13,11 @@ import ( var ( // podman container _inspect_ diffCmd = &cobra.Command{ - Use: "diff [options] IMAGE", - Args: cobra.ExactArgs(1), + 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.`, - RunE: diff, + 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`, @@ -39,31 +39,11 @@ func diffFlags(flags *pflag.FlagSet) { _ = flags.MarkDeprecated("archive", "Provided for backwards compatibility, has no impact on output.") formatFlagName := "format" - flags.StringVar(&diffOpts.Format, formatFlagName, "", "Change the output format") + flags.StringVar(&diffOpts.Format, formatFlagName, "", "Change the output format (json)") _ = diffCmd.RegisterFlagCompletionFunc(formatFlagName, common.AutocompleteFormat(nil)) } -func diff(cmd *cobra.Command, args []string) error { - if diffOpts.Latest { - return errors.New("image diff does not support --latest") - } - - results, err := registry.ImageEngine().Diff(registry.GetContext(), args[0], *diffOpts) - if err != nil { - return err - } - - switch { - case report.IsJSON(diffOpts.Format): - return common.ChangesToJSON(results) - case diffOpts.Format == "": - return common.ChangesToTable(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) +func diffRun(cmd *cobra.Command, args []string) error { + diffOpts.Type = define.DiffImage + return diff.Diff(cmd, args, *diffOpts) } -- cgit v1.2.3-54-g00ecf