improve examples

examples/lib/comparison-scenario/00-consumer.go

@@ -34,6 +34,7 @@ func TransportTo(target ocm.Repository, src string) error {
 		return errors.Wrapf(err, "cannot get repository access for %s", src)
 	}
 	defer repo.Close()
+	PrintConsumerId(repo, "source repository")
 
 	// lookup component version to be transported
 	cv, err := repo.LookupComponentVersion(COMPONENT_NAME, COMPONENT_VERSION)
@@ -69,6 +70,7 @@ func Consumer(cfg *helper.Config) error {
 		return errors.Wrapf(err, "cannot open local repository")
 	}
 	defer repo.Close()
+	PrintConsumerId(repo, "local repository")
 
 	////////////////////////////////////////////////////////////////////////////
 	fmt.Printf("*** transfer compoment version\n")

examples/lib/comparison-scenario/07-getref.go

@@ -69,5 +69,12 @@ func GetOCIReference(ctx ocm.Context, cfg *helper.Config) error {
 	} else {
 		fmt.Printf("no OCI reference found\n")
 	}
+
+	meth, err := res.AccessMethod()
+	if err != nil {
+		return err
+	}
+	defer meth.Close()
+	PrintConsumerId(meth, "OCI image")
 	return nil
 }

examples/lib/comparison-scenario/utils.go

@@ -10,6 +10,7 @@ import (
 	"io"
 	"os"
 
+	"github.com/open-component-model/ocm/pkg/contexts/credentials"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/attrs/signingattr"
 	"github.com/open-component-model/ocm/pkg/signing/handlers/rsa"
@@ -49,6 +50,16 @@ func PrintSignatures(cv ocm.ComponentVersionAccess) {
 	}
 }
 
+func PrintConsumerId(o interface{}, msg string) {
+	// register credentials for given OCI registry in context.
+	id := credentials.GetProvidedConsumerId(o)
+	if id == nil {
+		fmt.Printf("no consumer id for %s\n", msg)
+	} else {
+		fmt.Printf("consumer id for %s: %s\n", msg, id)
+	}
+}
+
 func InstallChart(chart *chart.Chart, release, namespace string) error {
 	settings := cli.New()
 	settings.SetNamespace(namespace)