diff options
Diffstat (limited to 'vendor/k8s.io/apimachinery/pkg/runtime/serializer/versioning')
-rw-r--r-- | vendor/k8s.io/apimachinery/pkg/runtime/serializer/versioning/versioning.go | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/vendor/k8s.io/apimachinery/pkg/runtime/serializer/versioning/versioning.go b/vendor/k8s.io/apimachinery/pkg/runtime/serializer/versioning/versioning.go deleted file mode 100644 index 718c5dfb7..000000000 --- a/vendor/k8s.io/apimachinery/pkg/runtime/serializer/versioning/versioning.go +++ /dev/null @@ -1,250 +0,0 @@ -/* -Copyright 2014 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 versioning - -import ( - "encoding/json" - "io" - "reflect" - "sync" - - "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" - "k8s.io/apimachinery/pkg/runtime" - "k8s.io/apimachinery/pkg/runtime/schema" - "k8s.io/klog/v2" -) - -// NewDefaultingCodecForScheme is a convenience method for callers that are using a scheme. -func NewDefaultingCodecForScheme( - // TODO: I should be a scheme interface? - scheme *runtime.Scheme, - encoder runtime.Encoder, - decoder runtime.Decoder, - encodeVersion runtime.GroupVersioner, - decodeVersion runtime.GroupVersioner, -) runtime.Codec { - return NewCodec(encoder, decoder, runtime.UnsafeObjectConvertor(scheme), scheme, scheme, scheme, encodeVersion, decodeVersion, scheme.Name()) -} - -// NewCodec takes objects in their internal versions and converts them to external versions before -// serializing them. It assumes the serializer provided to it only deals with external versions. -// This class is also a serializer, but is generally used with a specific version. -func NewCodec( - encoder runtime.Encoder, - decoder runtime.Decoder, - convertor runtime.ObjectConvertor, - creater runtime.ObjectCreater, - typer runtime.ObjectTyper, - defaulter runtime.ObjectDefaulter, - encodeVersion runtime.GroupVersioner, - decodeVersion runtime.GroupVersioner, - originalSchemeName string, -) runtime.Codec { - internal := &codec{ - encoder: encoder, - decoder: decoder, - convertor: convertor, - creater: creater, - typer: typer, - defaulter: defaulter, - - encodeVersion: encodeVersion, - decodeVersion: decodeVersion, - - identifier: identifier(encodeVersion, encoder), - - originalSchemeName: originalSchemeName, - } - return internal -} - -type codec struct { - encoder runtime.Encoder - decoder runtime.Decoder - convertor runtime.ObjectConvertor - creater runtime.ObjectCreater - typer runtime.ObjectTyper - defaulter runtime.ObjectDefaulter - - encodeVersion runtime.GroupVersioner - decodeVersion runtime.GroupVersioner - - identifier runtime.Identifier - - // originalSchemeName is optional, but when filled in it holds the name of the scheme from which this codec originates - originalSchemeName string -} - -var identifiersMap sync.Map - -type codecIdentifier struct { - EncodeGV string `json:"encodeGV,omitempty"` - Encoder string `json:"encoder,omitempty"` - Name string `json:"name,omitempty"` -} - -// identifier computes Identifier of Encoder based on codec parameters. -func identifier(encodeGV runtime.GroupVersioner, encoder runtime.Encoder) runtime.Identifier { - result := codecIdentifier{ - Name: "versioning", - } - - if encodeGV != nil { - result.EncodeGV = encodeGV.Identifier() - } - if encoder != nil { - result.Encoder = string(encoder.Identifier()) - } - if id, ok := identifiersMap.Load(result); ok { - return id.(runtime.Identifier) - } - identifier, err := json.Marshal(result) - if err != nil { - klog.Fatalf("Failed marshaling identifier for codec: %v", err) - } - identifiersMap.Store(result, runtime.Identifier(identifier)) - return runtime.Identifier(identifier) -} - -// Decode attempts a decode of the object, then tries to convert it to the internal version. If into is provided and the decoding is -// successful, the returned runtime.Object will be the value passed as into. Note that this may bypass conversion if you pass an -// into that matches the serialized version. -func (c *codec) Decode(data []byte, defaultGVK *schema.GroupVersionKind, into runtime.Object) (runtime.Object, *schema.GroupVersionKind, error) { - // If the into object is unstructured and expresses an opinion about its group/version, - // create a new instance of the type so we always exercise the conversion path (skips short-circuiting on `into == obj`) - decodeInto := into - if into != nil { - if _, ok := into.(runtime.Unstructured); ok && !into.GetObjectKind().GroupVersionKind().GroupVersion().Empty() { - decodeInto = reflect.New(reflect.TypeOf(into).Elem()).Interface().(runtime.Object) - } - } - - obj, gvk, err := c.decoder.Decode(data, defaultGVK, decodeInto) - if err != nil { - return nil, gvk, err - } - - if d, ok := obj.(runtime.NestedObjectDecoder); ok { - if err := d.DecodeNestedObjects(runtime.WithoutVersionDecoder{c.decoder}); err != nil { - return nil, gvk, err - } - } - - // if we specify a target, use generic conversion. - if into != nil { - // perform defaulting if requested - if c.defaulter != nil { - c.defaulter.Default(obj) - } - - // Short-circuit conversion if the into object is same object - if into == obj { - return into, gvk, nil - } - - if err := c.convertor.Convert(obj, into, c.decodeVersion); err != nil { - return nil, gvk, err - } - - return into, gvk, nil - } - - // perform defaulting if requested - if c.defaulter != nil { - c.defaulter.Default(obj) - } - - out, err := c.convertor.ConvertToVersion(obj, c.decodeVersion) - if err != nil { - return nil, gvk, err - } - return out, gvk, nil -} - -// Encode ensures the provided object is output in the appropriate group and version, invoking -// conversion if necessary. Unversioned objects (according to the ObjectTyper) are output as is. -func (c *codec) Encode(obj runtime.Object, w io.Writer) error { - if co, ok := obj.(runtime.CacheableObject); ok { - return co.CacheEncode(c.Identifier(), c.doEncode, w) - } - return c.doEncode(obj, w) -} - -func (c *codec) doEncode(obj runtime.Object, w io.Writer) error { - switch obj := obj.(type) { - case *runtime.Unknown: - return c.encoder.Encode(obj, w) - case runtime.Unstructured: - // An unstructured list can contain objects of multiple group version kinds. don't short-circuit just - // because the top-level type matches our desired destination type. actually send the object to the converter - // to give it a chance to convert the list items if needed. - if _, ok := obj.(*unstructured.UnstructuredList); !ok { - // avoid conversion roundtrip if GVK is the right one already or is empty (yes, this is a hack, but the old behaviour we rely on in kubectl) - objGVK := obj.GetObjectKind().GroupVersionKind() - if len(objGVK.Version) == 0 { - return c.encoder.Encode(obj, w) - } - targetGVK, ok := c.encodeVersion.KindForGroupVersionKinds([]schema.GroupVersionKind{objGVK}) - if !ok { - return runtime.NewNotRegisteredGVKErrForTarget(c.originalSchemeName, objGVK, c.encodeVersion) - } - if targetGVK == objGVK { - return c.encoder.Encode(obj, w) - } - } - } - - gvks, isUnversioned, err := c.typer.ObjectKinds(obj) - if err != nil { - return err - } - - objectKind := obj.GetObjectKind() - old := objectKind.GroupVersionKind() - // restore the old GVK after encoding - defer objectKind.SetGroupVersionKind(old) - - if c.encodeVersion == nil || isUnversioned { - if e, ok := obj.(runtime.NestedObjectEncoder); ok { - if err := e.EncodeNestedObjects(runtime.WithVersionEncoder{Encoder: c.encoder, ObjectTyper: c.typer}); err != nil { - return err - } - } - objectKind.SetGroupVersionKind(gvks[0]) - return c.encoder.Encode(obj, w) - } - - // Perform a conversion if necessary - out, err := c.convertor.ConvertToVersion(obj, c.encodeVersion) - if err != nil { - return err - } - - if e, ok := out.(runtime.NestedObjectEncoder); ok { - if err := e.EncodeNestedObjects(runtime.WithVersionEncoder{Version: c.encodeVersion, Encoder: c.encoder, ObjectTyper: c.typer}); err != nil { - return err - } - } - - // Conversion is responsible for setting the proper group, version, and kind onto the outgoing object - return c.encoder.Encode(out, w) -} - -// Identifier implements runtime.Encoder interface. -func (c *codec) Identifier() runtime.Identifier { - return c.identifier -} |