vendor: revendor

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

@@ -0,0 +1,101 @@
+/*
+Copyright 2018 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 (
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"sigs.k8s.io/structured-merge-diff/v4/fieldpath"
+	"sigs.k8s.io/structured-merge-diff/v4/merge"
+	"sigs.k8s.io/structured-merge-diff/v4/typed"
+)
+
+// versionConverter is an implementation of
+// sigs.k8s.io/structured-merge-diff/merge.Converter
+type versionConverter struct {
+	typeConverter   TypeConverter
+	objectConvertor runtime.ObjectConvertor
+	hubGetter       func(from schema.GroupVersion) schema.GroupVersion
+}
+
+var _ merge.Converter = &versionConverter{}
+
+// NewVersionConverter builds a VersionConverter from a TypeConverter and an ObjectConvertor.
+func newVersionConverter(t TypeConverter, o runtime.ObjectConvertor, h schema.GroupVersion) merge.Converter {
+	return &versionConverter{
+		typeConverter:   t,
+		objectConvertor: o,
+		hubGetter: func(from schema.GroupVersion) schema.GroupVersion {
+			return schema.GroupVersion{
+				Group:   from.Group,
+				Version: h.Version,
+			}
+		},
+	}
+}
+
+// NewCRDVersionConverter builds a VersionConverter for CRDs from a TypeConverter and an ObjectConvertor.
+func newCRDVersionConverter(t TypeConverter, o runtime.ObjectConvertor, h schema.GroupVersion) merge.Converter {
+	return &versionConverter{
+		typeConverter:   t,
+		objectConvertor: o,
+		hubGetter: func(from schema.GroupVersion) schema.GroupVersion {
+			return h
+		},
+	}
+}
+
+// Convert implements sigs.k8s.io/structured-merge-diff/merge.Converter
+func (v *versionConverter) Convert(object *typed.TypedValue, version fieldpath.APIVersion) (*typed.TypedValue, error) {
+	// Convert the smd typed value to a kubernetes object.
+	objectToConvert, err := v.typeConverter.TypedToObject(object)
+	if err != nil {
+		return object, err
+	}
+
+	// Parse the target groupVersion.
+	groupVersion, err := schema.ParseGroupVersion(string(version))
+	if err != nil {
+		return object, err
+	}
+
+	// If attempting to convert to the same version as we already have, just return it.
+	fromVersion := objectToConvert.GetObjectKind().GroupVersionKind().GroupVersion()
+	if fromVersion == groupVersion {
+		return object, nil
+	}
+
+	// Convert to internal
+	internalObject, err := v.objectConvertor.ConvertToVersion(objectToConvert, v.hubGetter(fromVersion))
+	if err != nil {
+		return object, err
+	}
+
+	// Convert the object into the target version
+	convertedObject, err := v.objectConvertor.ConvertToVersion(internalObject, groupVersion)
+	if err != nil {
+		return object, err
+	}
+
+	// Convert the object back to a smd typed value and return it.
+	return v.typeConverter.ObjectToTyped(convertedObject)
+}
+
+// IsMissingVersionError
+func (v *versionConverter) IsMissingVersionError(err error) bool {
+	return runtime.IsNotRegisteredError(err) || isNoCorrespondingTypeError(err)
+}