remote load: check if input is directory

The remote client does not support loading directories yet.  To prevent
confusing error messages and to make the behaviour more explicit, check
if the input points to a directory and throw an error if needed.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/pkg/domain/infra/tunnel/images.go b/pkg/domain/infra/tunnel/images.go
index 332a7c2eb..981884109 100644
--- a/pkg/domain/infra/tunnel/images.go
+++ b/pkg/domain/infra/tunnel/images.go
@@ -199,6 +199,13 @@ func (ir *ImageEngine) Load(ctx context.Context, opts entities.ImageLoadOptions)
 		return nil, err
 	}
 	defer f.Close()
+	fInfo, err := f.Stat()
+	if err != nil {
+		return nil, err
+	}
+	if fInfo.IsDir() {
+		return nil, errors.Errorf("remote client supports archives only but %q is a directory", opts.Input)
+	}
 	ref := opts.Name
 	if len(opts.Tag) > 0 {
 		ref += ":" + opts.Tag