func()

in cmd/gke-identity-service-migrator/main.go [99:167]
57 lines of code
13 McCabe index (conditional complexity)

func (c *FindCRBCommand) Execute(ctx context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
	if c.userIncludeSuffix == "" {
		log.Printf("Error: --user-include-suffix must be specified.")
		return subcommands.ExitFailure
	}

	rec := &subjectRecognizer{
		userIncludePrefix:   c.userIncludePrefix,
		userIncludeSuffix:   c.userIncludeSuffix,
		groupsIncludePrefix: c.groupsIncludePrefix,
		groupsExcludeSuffix: c.groupsExcludeSuffix,
	}

	// use the current context in kubeconfig
	config, err := clientcmd.BuildConfigFromFlags("", c.kubeConfig)
	if err != nil {
		log.Printf("Error while initializing Kubernetes REST config: %v", err)
		return subcommands.ExitFailure
	}

	kc, err := kubernetes.NewForConfig(config)
	if err != nil {
		log.Printf("Error while initializing Kubernetes client: %v", err)
		return subcommands.ExitFailure
	}

	federatedCRBs := &rbacv1.ClusterRoleBindingList{}

	continueToken := ""
	for {
		crbs, err := kc.RbacV1().ClusterRoleBindings().List(ctx, metav1.ListOptions{Continue: continueToken, Limit: 500})
		if err != nil {
			log.Printf("Error while listing ClusterRoleBindings: %v", err)
			return subcommands.ExitFailure
		}

		for _, crb := range crbs.Items {
			federated := false
			for _, sub := range crb.Subjects {
				if _, ok := rec.GetFederatedUser(sub); ok {
					federated = true
					continue
				}
				if _, ok := rec.GetFederatedGroup(sub); ok {
					federated = true
					continue
				}
			}

			if federated {
				federatedCRBs.Items = append(federatedCRBs.Items, crb)
			}
		}

		if crbs.Continue == "" {
			break
		}

		continueToken = crbs.Continue
	}

	printr := printers.NewTypeSetter(scheme.Scheme).ToPrinter(&printers.YAMLPrinter{})
	if err := printr.PrintObj(federatedCRBs, os.Stdout); err != nil {
		log.Printf("Error while printing identified federated ClusterRoleBindings: %v", err)
		return subcommands.ExitFailure
	}

	return subcommands.ExitSuccess
}