158
vendor/k8s.io/apimachinery/pkg/runtime/serializer/versioning/versioning.go
generated
vendored
158
vendor/k8s.io/apimachinery/pkg/runtime/serializer/versioning/versioning.go
generated
vendored
@ -17,12 +17,15 @@ 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.
|
||||
@ -62,6 +65,8 @@ func NewCodec(
|
||||
encodeVersion: encodeVersion,
|
||||
decodeVersion: decodeVersion,
|
||||
|
||||
identifier: identifier(encodeVersion, encoder),
|
||||
|
||||
originalSchemeName: originalSchemeName,
|
||||
}
|
||||
return internal
|
||||
@ -78,19 +83,47 @@ type codec struct {
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||||
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) {
|
||||
versioned, isVersioned := into.(*runtime.VersionedObjects)
|
||||
if isVersioned {
|
||||
into = versioned.Last()
|
||||
}
|
||||
|
||||
// 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
|
||||
@ -106,50 +139,30 @@ func (c *codec) Decode(data []byte, defaultGVK *schema.GroupVersionKind, into ru
|
||||
}
|
||||
|
||||
if d, ok := obj.(runtime.NestedObjectDecoder); ok {
|
||||
if err := d.DecodeNestedObjects(DirectDecoder{c.decoder}); err != nil {
|
||||
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 {
|
||||
if into == obj {
|
||||
if isVersioned {
|
||||
return versioned, gvk, nil
|
||||
}
|
||||
return into, gvk, nil
|
||||
}
|
||||
|
||||
// perform defaulting if requested
|
||||
if c.defaulter != nil {
|
||||
// create a copy to ensure defaulting is not applied to the original versioned objects
|
||||
if isVersioned {
|
||||
versioned.Objects = []runtime.Object{obj.DeepCopyObject()}
|
||||
}
|
||||
c.defaulter.Default(obj)
|
||||
} else {
|
||||
if isVersioned {
|
||||
versioned.Objects = []runtime.Object{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
|
||||
}
|
||||
|
||||
if isVersioned {
|
||||
versioned.Objects = append(versioned.Objects, into)
|
||||
return versioned, gvk, nil
|
||||
}
|
||||
return into, gvk, nil
|
||||
}
|
||||
|
||||
// Convert if needed.
|
||||
if isVersioned {
|
||||
// create a copy, because ConvertToVersion does not guarantee non-mutation of objects
|
||||
versioned.Objects = []runtime.Object{obj.DeepCopyObject()}
|
||||
}
|
||||
|
||||
// perform defaulting if requested
|
||||
if c.defaulter != nil {
|
||||
c.defaulter.Default(obj)
|
||||
@ -159,18 +172,19 @@ func (c *codec) Decode(data []byte, defaultGVK *schema.GroupVersionKind, into ru
|
||||
if err != nil {
|
||||
return nil, gvk, err
|
||||
}
|
||||
if isVersioned {
|
||||
if versioned.Last() != out {
|
||||
versioned.Objects = append(versioned.Objects, out)
|
||||
}
|
||||
return versioned, gvk, nil
|
||||
}
|
||||
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)
|
||||
@ -199,84 +213,38 @@ func (c *codec) Encode(obj runtime.Object, w io.Writer) error {
|
||||
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(DirectEncoder{Encoder: c.encoder, ObjectTyper: c.typer}); err != nil {
|
||||
if err := e.EncodeNestedObjects(runtime.WithVersionEncoder{Encoder: c.encoder, ObjectTyper: c.typer}); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
objectKind := obj.GetObjectKind()
|
||||
old := objectKind.GroupVersionKind()
|
||||
objectKind.SetGroupVersionKind(gvks[0])
|
||||
err = c.encoder.Encode(obj, w)
|
||||
objectKind.SetGroupVersionKind(old)
|
||||
return err
|
||||
return c.encoder.Encode(obj, w)
|
||||
}
|
||||
|
||||
// Perform a conversion if necessary
|
||||
objectKind := obj.GetObjectKind()
|
||||
old := objectKind.GroupVersionKind()
|
||||
out, err := c.convertor.ConvertToVersion(obj, c.encodeVersion)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if e, ok := out.(runtime.NestedObjectEncoder); ok {
|
||||
if err := e.EncodeNestedObjects(DirectEncoder{Version: c.encodeVersion, Encoder: c.encoder, ObjectTyper: c.typer}); err != nil {
|
||||
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
|
||||
err = c.encoder.Encode(out, w)
|
||||
// restore the old GVK, in case conversion returned the same object
|
||||
objectKind.SetGroupVersionKind(old)
|
||||
return err
|
||||
return c.encoder.Encode(out, w)
|
||||
}
|
||||
|
||||
// DirectEncoder serializes an object and ensures the GVK is set.
|
||||
type DirectEncoder struct {
|
||||
Version runtime.GroupVersioner
|
||||
runtime.Encoder
|
||||
runtime.ObjectTyper
|
||||
}
|
||||
|
||||
// Encode does not do conversion. It sets the gvk during serialization.
|
||||
func (e DirectEncoder) Encode(obj runtime.Object, stream io.Writer) error {
|
||||
gvks, _, err := e.ObjectTyper.ObjectKinds(obj)
|
||||
if err != nil {
|
||||
if runtime.IsNotRegisteredError(err) {
|
||||
return e.Encoder.Encode(obj, stream)
|
||||
}
|
||||
return err
|
||||
}
|
||||
kind := obj.GetObjectKind()
|
||||
oldGVK := kind.GroupVersionKind()
|
||||
gvk := gvks[0]
|
||||
if e.Version != nil {
|
||||
preferredGVK, ok := e.Version.KindForGroupVersionKinds(gvks)
|
||||
if ok {
|
||||
gvk = preferredGVK
|
||||
}
|
||||
}
|
||||
kind.SetGroupVersionKind(gvk)
|
||||
err = e.Encoder.Encode(obj, stream)
|
||||
kind.SetGroupVersionKind(oldGVK)
|
||||
return err
|
||||
}
|
||||
|
||||
// DirectDecoder clears the group version kind of a deserialized object.
|
||||
type DirectDecoder struct {
|
||||
runtime.Decoder
|
||||
}
|
||||
|
||||
// Decode does not do conversion. It removes the gvk during deserialization.
|
||||
func (d DirectDecoder) Decode(data []byte, defaults *schema.GroupVersionKind, into runtime.Object) (runtime.Object, *schema.GroupVersionKind, error) {
|
||||
obj, gvk, err := d.Decoder.Decode(data, defaults, into)
|
||||
if obj != nil {
|
||||
kind := obj.GetObjectKind()
|
||||
// clearing the gvk is just a convention of a codec
|
||||
kind.SetGroupVersionKind(schema.GroupVersionKind{})
|
||||
}
|
||||
return obj, gvk, err
|
||||
// Identifier implements runtime.Encoder interface.
|
||||
func (c *codec) Identifier() runtime.Identifier {
|
||||
return c.identifier
|
||||
}
|
||||
|
Reference in New Issue
Block a user