return "", fmt.Errorf("could not retrieve global.multiCluster.clusterName from injection config")
	}
	return vs, nil
}

// Because we are placing into an Unstructured, place as a map instead
// of structured Istio types.  (The go-client can handle the structured data, but the
// fake go-client used for mocking cannot.)
func unstructureIstioType(spec any) (map[string]any, error) {
	b, err := yaml.Marshal(spec)
	if err != nil {

)

type validator struct{}

func checkFields(un *unstructured.Unstructured) error {
	var errs error
	for key := range un.Object {
		if _, ok := validFields[key]; !ok {
			errs = multierror.Append(errs, fmt.Errorf("unknown field %q", key))
		}
	}
	return errs
}

func (v *validator) validateResource(istioNamespace, defaultNamespace string, un *unstructured.Unstructured, writer io.Writer) (validation.Warning, error) {

			t.Fatalf("Unwanted exception for 'istioctl %s': %v", strings.Join(c.args, " "), fErr)
		}
	}
}

func newUnstructured(apiVersion, kind, namespace, name string, generation int64) *unstructured.Unstructured {
	return &unstructured.Unstructured{
		Object: map[string]any{
			"apiVersion": apiVersion,
			"kind":       kind,
			"metadata": map[string]any{
				"namespace":  namespace,
				"name":       name,

	return signedHeaders, ErrNone
}

// signValues data type represents structured form of AWS Signature V4 header.
type signValues struct {
	Credential    credentialHeader
	SignedHeaders []string
	Signature     string
}

// preSignValues data type represents structured form of AWS Signature V4 query string.
type preSignValues struct {
	signValues
	Date    time.Time

  labels:
    service.istio.io/canonical-name: helloworld
    service.istio.io/canonical-revision: v1
spec:
  replicas: 1
`
)

func fromYAML(in string) *unstructured.Unstructured {
	var un unstructured.Unstructured
	if err := yaml.Unmarshal([]byte(in), &un); err != nil {
		panic(err)
	}
	return &un
}

func TestValidateResource(t *testing.T) {
	cases := []struct {
		name  string

[TestFS] now returns a structured error that can be unwrapped
(via method `Unwrap() []error`). This allows inspecting errors

If something seems interesting and useful to your project, go ahead and check it, but otherwise, you might probably just skip them.

!!! tip

		dobj = mustGetDeployment(g, objs, "ilb-gateway")
		d = dobj.Unstructured()
		c = dobj.Container("istio-proxy")
		s := mustGetService(g, objs, "ilb-gateway").Unstructured()
		g.Expect(d).Should(HavePathValueContain(PathValue{"metadata.labels", toMap("app:istio-ingressgateway,istio:ingressgateway,release: istio")}))
		g.Expect(c).Should(HavePathValueEqual(PathValue{"resources.requests.cpu", "333m"}))

package mesh

import (
	"bytes"
	"context"
	"errors"
	"fmt"
	"os"
	"path/filepath"
	"strings"

	kerrors "k8s.io/apimachinery/pkg/api/errors"
	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/apimachinery/pkg/types"
	"k8s.io/client-go/kubernetes"
	"k8s.io/client-go/kubernetes/scheme"
	"sigs.k8s.io/controller-runtime/pkg/client"

### Structured Logging in Kubelet