Added some ctl boilerplate

clitools/pkg/kube/clients.go

@@ -0,0 +1,50 @@
+package kube
+
+import (
+	"fmt"
+
+	monov1alpha1 "undecided.project/monok8s/pkg/apis/monok8s/v1alpha1"
+	apiextensionsclientset "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
+	"k8s.io/apimachinery/pkg/runtime"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	"k8s.io/cli-runtime/pkg/genericclioptions"
+	"k8s.io/client-go/dynamic"
+	kubernetes "k8s.io/client-go/kubernetes"
+	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
+	"k8s.io/client-go/rest"
+)
+
+type Clients struct {
+	Config           *rest.Config
+	Kubernetes       kubernetes.Interface
+	Dynamic          dynamic.Interface
+	APIExtensions    apiextensionsclientset.Interface
+	RESTClientGetter genericclioptions.RESTClientGetter
+}
+
+func NewClients(flags *genericclioptions.ConfigFlags) (*Clients, error) {
+	cfg, err := flags.ToRESTConfig()
+	if err != nil {
+		return nil, fmt.Errorf("build rest config: %w", err)
+	}
+	kubeClient, err := kubernetes.NewForConfig(cfg)
+	if err != nil {
+		return nil, fmt.Errorf("build kubernetes client: %w", err)
+	}
+	dyn, err := dynamic.NewForConfig(cfg)
+	if err != nil {
+		return nil, fmt.Errorf("build dynamic client: %w", err)
+	}
+	ext, err := apiextensionsclientset.NewForConfig(cfg)
+	if err != nil {
+		return nil, fmt.Errorf("build apiextensions client: %w", err)
+	}
+	return &Clients{Config: cfg, Kubernetes: kubeClient, Dynamic: dyn, APIExtensions: ext, RESTClientGetter: flags}, nil
+}
+
+func Scheme() *runtime.Scheme {
+	scheme := runtime.NewScheme()
+	utilruntime.Must(clientgoscheme.AddToScheme(scheme))
+	utilruntime.Must(monov1alpha1.AddToScheme(scheme))
+	return scheme
+}