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package image
import (
"context"
"fmt"
"github.com/containers/image/v5/internal/manifest"
"github.com/containers/image/v5/types"
)
func manifestSchema2FromManifestList(ctx context.Context, sys *types.SystemContext, src types.ImageSource, manblob []byte) (genericManifest, error) {
list, err := manifest.Schema2ListFromManifest(manblob)
if err != nil {
return nil, fmt.Errorf("parsing schema2 manifest list: %w", err)
}
targetManifestDigest, err := list.ChooseInstance(sys)
if err != nil {
return nil, fmt.Errorf("choosing image instance: %w", err)
}
manblob, mt, err := src.GetManifest(ctx, &targetManifestDigest)
if err != nil {
return nil, fmt.Errorf("fetching target platform image selected from manifest list: %w", err)
}
matches, err := manifest.MatchesDigest(manblob, targetManifestDigest)
if err != nil {
return nil, fmt.Errorf("computing manifest digest: %w", err)
}
if !matches {
return nil, fmt.Errorf("Image manifest does not match selected manifest digest %s", targetManifestDigest)
}
return manifestInstanceFromBlob(ctx, sys, src, manblob, mt)
}
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