Close plugin connection

Signed-off-by: Kim Christensen <kimworking@gmail.com>

pkg/porter/porter.go

@@ -139,6 +139,11 @@ func (p *Porter) Close() error {
 		bigErr = multierror.Append(bigErr, err)
 	}
 
+	err = p.Signer.Close()
+	if err != nil {
+		bigErr = multierror.Append(bigErr, err)
+	}
+
 	return bigErr.ErrorOrNil()
 }
 

pkg/signing/pluginstore/signer.go

@@ -111,3 +111,11 @@ func (s *Signer) Connect(ctx context.Context) error {
 
 	return nil
 }
+
+func (s *Signer) Close() error {
+	if s.conn != nil {
+		s.conn.Close(context.Background())
+		s.conn = nil
+	}
+	return nil
+}

pkg/signing/signer.go

@@ -5,6 +5,8 @@ import "context"
 // Signer is an interface for signing and verifying Porter
 // bundles and invocation images.
 type Signer interface {
+	Close() error
+
 	// Sign generates a signature for the specified reference, which
 	// can be a Porter bundle or an invocation image.
 	Sign(ctx context.Context, ref string) error