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Add a --prefer-index flag that allows you to specify the preferred behavior when deciding on how to create an image/manifest from a single source.

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Signed-off-by: Tim Smith <tismith@rvohealth.com>
This commit is contained in:
Tim Smith
2024-05-29 14:07:28 -04:00
parent 0808747add
commit abf6c77d91
3 changed files with 11 additions and 4 deletions
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9
util/imagetools/create.go
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@ -29,7 +29,7 @@ type Source struct {
Ref reference.Named
}
func (r *Resolver) Combine(ctx context.Context, srcs []*Source, ann []string) ([]byte, ocispec.Descriptor, error) {
func (r *Resolver) Combine(ctx context.Context, srcs []*Source, ann []string, preferIndex bool) ([]byte, ocispec.Descriptor, error) {
eg, ctx := errgroup.WithContext(ctx)
dts := make([][]byte, len(srcs))
@ -79,7 +79,12 @@ func (r *Resolver) Combine(ctx context.Context, srcs []*Source, ann []string) ([
// on single source, return original bytes
if len(srcs) == 1 && len(ann) == 0 {
if mt := srcs[0].Desc.MediaType; mt == images.MediaTypeDockerSchema2ManifestList || mt == images.MediaTypeDockerSchema2Manifest || mt == ocispec.MediaTypeImageIndex {
switch srcs[0].Desc.MediaType {
case images.MediaTypeDockerSchema2Manifest:
if !preferIndex {
return dts[0], srcs[0].Desc, nil
}
case images.MediaTypeDockerSchema2ManifestList, ocispec.MediaTypeImageIndex:
return dts[0], srcs[0].Desc, nil
}
}