image/internal/imagesource/impl/signatures.go

19 lines
674 B
Go

package impl
import (
"context"
"github.com/opencontainers/go-digest"
)
// NoSignatures implements GetSignatures() that returns nothing.
type NoSignatures struct{}
// GetSignatures returns the image's signatures. It may use a remote (= slow) service.
// If instanceDigest is not nil, it contains a digest of the specific manifest instance to retrieve signatures for
// (when the primary manifest is a manifest list); this never happens if the primary manifest is not a manifest list
// (e.g. if the source never returns manifest lists).
func (stub NoSignatures) GetSignatures(ctx context.Context, instanceDigest *digest.Digest) ([][]byte, error) {
return nil, nil
}