istio/istio · error

could not decode generated webhook: %w

Error message

could not decode generated webhook: %w

What it means

Error "could not decode generated webhook: %w" thrown in istio/istio.

Source

Thrown at istioctl/pkg/tag/generate.go:318

		}
	}
	if validatingWebhookYAML == "" {
		return "", fmt.Errorf("could not find ValidatingWebhookConfiguration in manifests")
	}

	scheme := runtime.NewScheme()
	codecFactory := serializer.NewCodecFactory(scheme)
	deserializer := codecFactory.UniversalDeserializer()
	serializer := json.NewSerializerWithOptions(
		json.DefaultMetaFactory, nil, nil, json.SerializerOptions{
			Yaml:   true,
			Pretty: true,
			Strict: true,
		})

	whObject, _, err := deserializer.Decode([]byte(validatingWebhookYAML), nil, &admitv1.ValidatingWebhookConfiguration{})
	if err != nil {
		return "", fmt.Errorf("could not decode generated webhook: %w", err)
	}
	decodedWh := whObject.(*admitv1.ValidatingWebhookConfiguration)
	for i := range decodedWh.Webhooks {
		decodedWh.Webhooks[i].ClientConfig.CABundle = []byte(config.CABundle)
	}
	decodedWh.Labels = generateLabels(decodedWh.Labels, config.Labels, opts.CustomLabels, opts.UserManaged)
	decodedWh.Annotations = maps.MergeCopy(decodedWh.Annotations, config.Annotations)
	for i := range decodedWh.Webhooks {
		if failurePolicy, ok := config.FailurePolicy[decodedWh.Webhooks[i].Name]; ok {
			decodedWh.Webhooks[i].FailurePolicy = failurePolicy
		}
	}
	whBuf := new(bytes.Buffer)
	if err = serializer.Encode(decodedWh, whBuf); err != nil {
		return "", err
	}

	return whBuf.String(), nil

View on GitHub (pinned to 8dc789c5cf)

When it happens

Trigger: Thrown at istioctl/pkg/tag/generate.go:318 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of istio/istio@8dc789c5cf (2026-08-15). Data as JSON: /api/errors/2bc76801bf136df6. Report an issue: GitHub.