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package sourceresolver
import (
"context"
"strings"
"github.com/distribution/reference"
"github.com/moby/buildkit/solver/pb"
"github.com/moby/buildkit/util/imageutil"
digest "github.com/opencontainers/go-digest"
"github.com/pkg/errors"
)
type ImageMetaResolver interface {
ResolveImageConfig(ctx context.Context, ref string, opt Opt) (string, digest.Digest, []byte, error)
}
type imageMetaResolver struct {
mr MetaResolver
}
var _ ImageMetaResolver = &imageMetaResolver{}
func NewImageMetaResolver(mr MetaResolver) ImageMetaResolver {
return &imageMetaResolver{
mr: mr,
}
}
func (imr *imageMetaResolver) ResolveImageConfig(ctx context.Context, ref string, opt Opt) (string, digest.Digest, []byte, error) {
parsed, err := reference.ParseNormalizedNamed(ref)
if err != nil {
return "", "", nil, errors.Wrapf(err, "could not parse reference %q", ref)
}
ref = parsed.String()
op := &pb.SourceOp{
Identifier: "docker-image://" + ref,
}
if opt := opt.OCILayoutOpt; opt != nil {
op.Identifier = "oci-layout://" + ref
op.Attrs = map[string]string{}
if opt.Store.SessionID != "" {
op.Attrs[pb.AttrOCILayoutSessionID] = opt.Store.SessionID
}
if opt.Store.StoreID != "" {
op.Attrs[pb.AttrOCILayoutStoreID] = opt.Store.StoreID
}
}
res, err := imr.mr.ResolveSourceMetadata(ctx, op, opt)
if err != nil {
return "", "", nil, errors.Wrapf(err, "failed to resolve source metadata for %s", ref)
}
if res.Image == nil {
return "", "", nil, &imageutil.ResolveToNonImageError{Ref: ref, Updated: res.Op.Identifier}
}
ref = strings.TrimPrefix(res.Op.Identifier, "docker-image://")
ref = strings.TrimPrefix(ref, "oci-layout://")
return ref, res.Image.Digest, res.Image.Config, nil
}
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