feat: add crd gen

Signed-off-by: runzexia <runzexia@yunify.com>

vendor/k8s.io/apiserver/pkg/server/healthz.go

@@ -0,0 +1,45 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package server
+
+import (
+	"fmt"
+
+	"k8s.io/apiserver/pkg/server/healthz"
+)
+
+// AddHealthzCheck allows you to add a HealthzCheck.
+func (s *GenericAPIServer) AddHealthzChecks(checks ...healthz.HealthzChecker) error {
+	s.healthzLock.Lock()
+	defer s.healthzLock.Unlock()
+
+	if s.healthzCreated {
+		return fmt.Errorf("unable to add because the healthz endpoint has already been created")
+	}
+
+	s.healthzChecks = append(s.healthzChecks, checks...)
+	return nil
+}
+
+// installHealthz creates the healthz endpoint for this server
+func (s *GenericAPIServer) installHealthz() {
+	s.healthzLock.Lock()
+	defer s.healthzLock.Unlock()
+	s.healthzCreated = true
+
+	healthz.InstallHandler(s.Handler.NonGoRestfulMux, s.healthzChecks...)
+}