vendor: Update vendor logic

vendor/k8s.io/apiserver/pkg/endpoints/handlers/fieldmanager/skipnonapplied.go

@@ -0,0 +1,66 @@
+/*
+Copyright 2019 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 fieldmanager
+
+import (
+	"fmt"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+type skipNonAppliedManager struct {
+	fieldManager           Manager
+	objectCreater          runtime.ObjectCreater
+	gvk                    schema.GroupVersionKind
+	beforeApplyManagerName string
+}
+
+var _ Manager = &skipNonAppliedManager{}
+
+// NewSkipNonAppliedManager creates a new wrapped FieldManager that only starts tracking managers after the first apply.
+func NewSkipNonAppliedManager(fieldManager Manager, objectCreater runtime.ObjectCreater, gvk schema.GroupVersionKind) Manager {
+	return &skipNonAppliedManager{
+		fieldManager:           fieldManager,
+		objectCreater:          objectCreater,
+		gvk:                    gvk,
+		beforeApplyManagerName: "before-first-apply",
+	}
+}
+
+// Update implements Manager.
+func (f *skipNonAppliedManager) Update(liveObj, newObj runtime.Object, managed Managed, manager string) (runtime.Object, Managed, error) {
+	if len(managed.Fields()) == 0 {
+		return newObj, managed, nil
+	}
+	return f.fieldManager.Update(liveObj, newObj, managed, manager)
+}
+
+// Apply implements Manager.
+func (f *skipNonAppliedManager) Apply(liveObj runtime.Object, patch []byte, managed Managed, fieldManager string, force bool) (runtime.Object, Managed, error) {
+	if len(managed.Fields()) == 0 {
+		emptyObj, err := f.objectCreater.New(f.gvk)
+		if err != nil {
+			return nil, nil, fmt.Errorf("failed to create empty object of type %v: %v", f.gvk, err)
+		}
+		liveObj, managed, err = f.fieldManager.Update(emptyObj, liveObj, managed, f.beforeApplyManagerName)
+		if err != nil {
+			return nil, nil, fmt.Errorf("failed to create manager for existing fields: %v", err)
+		}
+	}
+	return f.fieldManager.Apply(liveObj, patch, managed, fieldManager, force)
+}