feat: scaffold terraform provider for fission via kubernetes CRD

terraform/provider/internal/client/client.go

@@ -0,0 +1,61 @@
+package client
+
+import (
+	"fmt"
+
+	"k8s.io/client-go/dynamic"
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/clientcmd"
+)
+
+// Client хранит клиентов Kubernetes API для работы с CRD Fission.
+type Client struct {
+	DynClient dynamic.Interface
+	K8sClient kubernetes.Interface
+	Namespace string
+}
+
+// New создает Kubernetes clients из kubeconfig/context.
+func New(kubeconfigPath, kubeContext, namespace string) (*Client, error) {
+	cfg, err := buildConfig(kubeconfigPath, kubeContext)
+	if err != nil {
+		return nil, err
+	}
+
+	dynClient, err := dynamic.NewForConfig(cfg)
+	if err != nil {
+		return nil, fmt.Errorf("create dynamic client: %w", err)
+	}
+
+	k8sClient, err := kubernetes.NewForConfig(cfg)
+	if err != nil {
+		return nil, fmt.Errorf("create kubernetes client: %w", err)
+	}
+
+	return &Client{
+		DynClient: dynClient,
+		K8sClient: k8sClient,
+		Namespace: namespace,
+	}, nil
+}
+
+func buildConfig(kubeconfigPath, kubeContext string) (*rest.Config, error) {
+	loadingRules := &clientcmd.ClientConfigLoadingRules{}
+	if kubeconfigPath != "" {
+		loadingRules.ExplicitPath = kubeconfigPath
+	}
+
+	overrides := &clientcmd.ConfigOverrides{}
+	if kubeContext != "" {
+		overrides.CurrentContext = kubeContext
+	}
+
+	clientCfg := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(loadingRules, overrides)
+	cfg, err := clientCfg.ClientConfig()
+	if err != nil {
+		return nil, fmt.Errorf("build kube config: %w", err)
+	}
+
+	return cfg, nil
+}