From 7fea46752cbfb0ef7bfdd694afe95038c9875212 Mon Sep 17 00:00:00 2001 From: Valentin Rothberg Date: Fri, 31 Jul 2020 09:27:21 +0200 Subject: support multi-image (docker) archives Support loading and saving tarballs with more than one image. Add a new `/libpod/images/export` endpoint to the rest API to allow for exporting/saving multiple images into an archive. Note that a non-release version of containers/image is vendored. A release version must be vendored before cutting a new Podman release. We force the containers/image version via a replace in the go.mod file; this way go won't try to match the versions. Signed-off-by: Valentin Rothberg --- cmd/podman/images/save.go | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'cmd') diff --git a/cmd/podman/images/save.go b/cmd/podman/images/save.go index 82a3513f5..c57f61221 100644 --- a/cmd/podman/images/save.go +++ b/cmd/podman/images/save.go @@ -16,7 +16,10 @@ import ( "golang.org/x/crypto/ssh/terminal" ) -var validFormats = []string{define.OCIManifestDir, define.OCIArchive, define.V2s2ManifestDir, define.V2s2Archive} +var ( + validFormats = []string{define.OCIManifestDir, define.OCIArchive, define.V2s2ManifestDir, define.V2s2Archive} + containerConfig = registry.PodmanConfig() +) var ( saveDescription = `Save an image to docker-archive or oci-archive on the local machine. Default is docker-archive.` @@ -79,7 +82,7 @@ func saveFlags(flags *pflag.FlagSet) { flags.StringVar(&saveOpts.Format, "format", define.V2s2Archive, "Save image to oci-archive, oci-dir (directory with oci manifest type), docker-archive, docker-dir (directory with v2s2 manifest type)") flags.StringVarP(&saveOpts.Output, "output", "o", "", "Write to a specified file (default: stdout, which must be redirected)") flags.BoolVarP(&saveOpts.Quiet, "quiet", "q", false, "Suppress the output") - + flags.BoolVarP(&saveOpts.MultiImageArchive, "multi-image-archive", "m", containerConfig.Engine.MultiImageArchive, "Interpret additional arguments as images not tags and create a multi-image-archive (only for docker-archive)") } func save(cmd *cobra.Command, args []string) (finalErr error) { @@ -118,6 +121,13 @@ func save(cmd *cobra.Command, args []string) (finalErr error) { if len(args) > 1 { tags = args[1:] } + + // Decide whether c/image's progress bars should use stderr or stdout. + // If the output is set of stdout, any log message there would corrupt + // the tarfile. + if saveOpts.Output == os.Stdout.Name() { + saveOpts.Quiet = true + } err := registry.ImageEngine().Save(context.Background(), args[0], tags, saveOpts) if err == nil { succeeded = true -- cgit v1.2.3-54-g00ecf