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 | 82 |
1 files changed, 50 insertions, 32 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 index ee5cb86f7..ced184c91 100644 --- a/vendor/k8s.io/apimachinery/pkg/runtime/serializer/versioning/versioning.go +++ b/vendor/k8s.io/apimachinery/pkg/runtime/serializer/versioning/versioning.go @@ -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" ) // 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 { 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 @@ -115,22 +148,11 @@ func (c *codec) Decode(data []byte, defaultGVK *schema.GroupVersionKind, into ru if into != 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 { - if isVersioned { - return versioned, gvk, nil - } return into, gvk, nil } @@ -138,19 +160,9 @@ func (c *codec) Decode(data []byte, defaultGVK *schema.GroupVersionKind, into ru 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) @@ -160,18 +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) @@ -230,3 +243,8 @@ func (c *codec) Encode(obj runtime.Object, w io.Writer) error { // 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 +} |