vendor: Update vendor logic

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

@@ -0,0 +1,209 @@
+/*
+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"
+	"time"
+
+	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apiserver/pkg/endpoints/handlers/fieldmanager/internal"
+	"k8s.io/klog"
+	openapiproto "k8s.io/kube-openapi/pkg/util/proto"
+	"sigs.k8s.io/structured-merge-diff/fieldpath"
+	"sigs.k8s.io/structured-merge-diff/merge"
+	"sigs.k8s.io/yaml"
+)
+
+type structuredMergeManager struct {
+	typeConverter   internal.TypeConverter
+	objectConverter runtime.ObjectConvertor
+	objectDefaulter runtime.ObjectDefaulter
+	groupVersion    schema.GroupVersion
+	hubVersion      schema.GroupVersion
+	updater         merge.Updater
+}
+
+var _ Manager = &structuredMergeManager{}
+
+// NewStructuredMergeManager creates a new Manager that merges apply requests
+// and update managed fields for other types of requests.
+func NewStructuredMergeManager(models openapiproto.Models, objectConverter runtime.ObjectConvertor, objectDefaulter runtime.ObjectDefaulter, gv schema.GroupVersion, hub schema.GroupVersion) (Manager, error) {
+	typeConverter, err := internal.NewTypeConverter(models, false)
+	if err != nil {
+		return nil, err
+	}
+
+	return &structuredMergeManager{
+		typeConverter:   typeConverter,
+		objectConverter: objectConverter,
+		objectDefaulter: objectDefaulter,
+		groupVersion:    gv,
+		hubVersion:      hub,
+		updater: merge.Updater{
+			Converter: internal.NewVersionConverter(typeConverter, objectConverter, hub),
+		},
+	}, nil
+}
+
+// NewCRDStructuredMergeManager creates a new Manager specifically for
+// CRDs. This allows for the possibility of fields which are not defined
+// in models, as well as having no models defined at all.
+func NewCRDStructuredMergeManager(models openapiproto.Models, objectConverter runtime.ObjectConvertor, objectDefaulter runtime.ObjectDefaulter, gv schema.GroupVersion, hub schema.GroupVersion, preserveUnknownFields bool) (_ Manager, err error) {
+	var typeConverter internal.TypeConverter = internal.DeducedTypeConverter{}
+	if models != nil {
+		typeConverter, err = internal.NewTypeConverter(models, preserveUnknownFields)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return &structuredMergeManager{
+		typeConverter:   typeConverter,
+		objectConverter: objectConverter,
+		objectDefaulter: objectDefaulter,
+		groupVersion:    gv,
+		hubVersion:      hub,
+		updater: merge.Updater{
+			Converter: internal.NewCRDVersionConverter(typeConverter, objectConverter, hub),
+		},
+	}, nil
+}
+
+// Update implements Manager.
+func (f *structuredMergeManager) Update(liveObj, newObj runtime.Object, managed Managed, manager string) (runtime.Object, Managed, error) {
+	newObjVersioned, err := f.toVersioned(newObj)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to convert new object to proper version: %v", err)
+	}
+	liveObjVersioned, err := f.toVersioned(liveObj)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to convert live object to proper version: %v", err)
+	}
+	newObjTyped, err := f.typeConverter.ObjectToTyped(newObjVersioned)
+	if err != nil {
+		// Return newObj and just by-pass fields update. This really shouldn't happen.
+		klog.Errorf("[SHOULD NOT HAPPEN] failed to create typed new object: %v", err)
+		return newObj, managed, nil
+	}
+	liveObjTyped, err := f.typeConverter.ObjectToTyped(liveObjVersioned)
+	if err != nil {
+		// Return newObj and just by-pass fields update. This really shouldn't happen.
+		klog.Errorf("[SHOULD NOT HAPPEN] failed to create typed live object: %v", err)
+		return newObj, managed, nil
+	}
+	apiVersion := fieldpath.APIVersion(f.groupVersion.String())
+
+	// TODO(apelisse) use the first return value when unions are implemented
+	self := "current-operation"
+	_, managedFields, err := f.updater.Update(liveObjTyped, newObjTyped, apiVersion, managed.Fields(), self)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to update ManagedFields: %v", err)
+	}
+	managed = internal.NewManaged(managedFields, managed.Times())
+
+	// If the current operation took any fields from anything, it means the object changed,
+	// so update the timestamp of the managedFieldsEntry and merge with any previous updates from the same manager
+	if vs, ok := managed.Fields()[self]; ok {
+		delete(managed.Fields(), self)
+
+		managed.Times()[manager] = &metav1.Time{Time: time.Now().UTC()}
+		if previous, ok := managed.Fields()[manager]; ok {
+			managed.Fields()[manager] = fieldpath.NewVersionedSet(vs.Set().Union(previous.Set()), vs.APIVersion(), vs.Applied())
+		} else {
+			managed.Fields()[manager] = vs
+		}
+	}
+
+	return newObj, managed, nil
+}
+
+// Apply implements Manager.
+func (f *structuredMergeManager) Apply(liveObj runtime.Object, patch []byte, managed Managed, manager string, force bool) (runtime.Object, Managed, error) {
+	patchObj := &unstructured.Unstructured{Object: map[string]interface{}{}}
+	if err := yaml.Unmarshal(patch, &patchObj.Object); err != nil {
+		return nil, nil, errors.NewBadRequest(fmt.Sprintf("error decoding YAML: %v", err))
+	}
+
+	// Check that the patch object has the same version as the live object
+	if patchObj.GetAPIVersion() != f.groupVersion.String() {
+		return nil, nil,
+			errors.NewBadRequest(
+				fmt.Sprintf("Incorrect version specified in apply patch. "+
+					"Specified patch version: %s, expected: %s",
+					patchObj.GetAPIVersion(), f.groupVersion.String()))
+	}
+
+	if patchObj.GetManagedFields() != nil {
+		return nil, nil, errors.NewBadRequest(fmt.Sprintf("metadata.managedFields must be nil"))
+	}
+
+	liveObjVersioned, err := f.toVersioned(liveObj)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to convert live object to proper version: %v", err)
+	}
+
+	patchObjTyped, err := f.typeConverter.ObjectToTyped(patchObj)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to create typed patch object: %v", err)
+	}
+	liveObjTyped, err := f.typeConverter.ObjectToTyped(liveObjVersioned)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to create typed live object: %v", err)
+	}
+
+	apiVersion := fieldpath.APIVersion(f.groupVersion.String())
+	newObjTyped, managedFields, err := f.updater.Apply(liveObjTyped, patchObjTyped, apiVersion, managed.Fields(), manager, force)
+	if err != nil {
+		if conflicts, ok := err.(merge.Conflicts); ok {
+			return nil, nil, internal.NewConflictError(conflicts)
+		}
+		return nil, nil, err
+	}
+	managed = internal.NewManaged(managedFields, managed.Times())
+
+	// Update the time in the managedFieldsEntry for this operation
+	managed.Times()[manager] = &metav1.Time{Time: time.Now().UTC()}
+
+	newObj, err := f.typeConverter.TypedToObject(newObjTyped)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to convert new typed object to object: %v", err)
+	}
+
+	newObjVersioned, err := f.toVersioned(newObj)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to convert new object to proper version: %v", err)
+	}
+	f.objectDefaulter.Default(newObjVersioned)
+
+	newObjUnversioned, err := f.toUnversioned(newObjVersioned)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to convert to unversioned: %v", err)
+	}
+	return newObjUnversioned, managed, nil
+}
+
+func (f *structuredMergeManager) toVersioned(obj runtime.Object) (runtime.Object, error) {
+	return f.objectConverter.ConvertToVersion(obj, f.groupVersion)
+}
+
+func (f *structuredMergeManager) toUnversioned(obj runtime.Object) (runtime.Object, error) {
+	return f.objectConverter.ConvertToVersion(obj, f.hubVersion)
+}