feat: kubesphere 4.0 (#6115)

* feat: kubesphere 4.0

Signed-off-by: ci-bot <ci-bot@kubesphere.io>

* feat: kubesphere 4.0

Signed-off-by: ci-bot <ci-bot@kubesphere.io>

---------

Signed-off-by: ci-bot <ci-bot@kubesphere.io>
Co-authored-by: ks-ci-bot <ks-ci-bot@example.com>
Co-authored-by: joyceliu <joyceliu@yunify.com>

pkg/controller/extension/reverseproxy_webhook.go

@@ -0,0 +1,76 @@
+/*
+ * Please refer to the LICENSE file in the root directory of the project.
+ * https://github.com/kubesphere/kubesphere/blob/master/LICENSE
+ */
+
+package extension
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	kscontroller "kubesphere.io/kubesphere/pkg/controller"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
+
+	extensionsv1alpha1 "kubesphere.io/api/extensions/v1alpha1"
+)
+
+var _ admission.CustomValidator = &ReverseProxyWebhook{}
+var _ kscontroller.Controller = &ReverseProxyWebhook{}
+
+func (r *ReverseProxyWebhook) Name() string {
+	return "reverseproxy-webhook"
+}
+
+type ReverseProxyWebhook struct {
+	client.Client
+}
+
+func (r *ReverseProxyWebhook) SetupWithManager(mgr *kscontroller.Manager) error {
+	r.Client = mgr.GetClient()
+	return ctrl.NewWebhookManagedBy(mgr).
+		WithValidator(r).
+		For(&extensionsv1alpha1.ReverseProxy{}).
+		Complete()
+}
+
+func (r *ReverseProxyWebhook) ValidateCreate(ctx context.Context, obj runtime.Object) (admission.Warnings, error) {
+	return r.validateReverseProxy(ctx, obj.(*extensionsv1alpha1.ReverseProxy))
+}
+
+func (r *ReverseProxyWebhook) ValidateUpdate(ctx context.Context, oldObj, newObj runtime.Object) (admission.Warnings, error) {
+	return r.validateReverseProxy(ctx, newObj.(*extensionsv1alpha1.ReverseProxy))
+}
+
+func (r *ReverseProxyWebhook) ValidateDelete(ctx context.Context, obj runtime.Object) (admission.Warnings, error) {
+	return nil, nil
+}
+
+func (r *ReverseProxyWebhook) validateReverseProxy(ctx context.Context, proxy *extensionsv1alpha1.ReverseProxy) (admission.Warnings, error) {
+	reverseProxies := &extensionsv1alpha1.ReverseProxyList{}
+	if err := r.Client.List(ctx, reverseProxies, &client.ListOptions{}); err != nil {
+		return nil, err
+	}
+	for _, reverseProxy := range reverseProxies.Items {
+		if reverseProxy.Name == proxy.Name {
+			continue
+		}
+		if reverseProxy.Spec.Matcher.Method != proxy.Spec.Matcher.Method &&
+			reverseProxy.Spec.Matcher.Method != "*" {
+			continue
+		}
+		if reverseProxy.Spec.Matcher.Path == proxy.Spec.Matcher.Path {
+			return nil, fmt.Errorf("ReverseProxy %v is already exists", proxy.Spec.Matcher)
+		}
+		if strings.HasSuffix(reverseProxy.Spec.Matcher.Path, "*") &&
+			strings.HasPrefix(proxy.Spec.Matcher.Path, strings.TrimRight(reverseProxy.Spec.Matcher.Path, "*")) {
+			return nil, fmt.Errorf("ReverseProxy %v is already exists", proxy.Spec.Matcher)
+		}
+	}
+	return nil, nil
+}