INNER CODE UNIT · Go

fromEnv

fluxcd/flagger · cmd/flagger/main.go:399

func fromEnv(envVar string, defaultVal string) string {
	if v := os.Getenv(envVar); v != "" {
		return v
	}
	return defaultVal
}

func verifyCRDs(flaggerClient clientset.Interface, logger *zap.SugaredLogger) {
	_, err := flaggerClient.FlaggerV1beta1().Canaries(namespace).List(context.TODO(), metav1.ListOptions{Limit: 1})
	if err != nil {
		logger.Fatalf("Canary CRD is not registered %v", err)
	}

	_, err = flaggerClient.FlaggerV1beta1().MetricTemplates(namespace).List(context.TODO(), metav1.ListOptions{Limit: 1})
	if err != nil {
		logger.Fatalf("MetricTemplate CRD is not registered %v", err)
	}

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