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Avoid short-circuiting conversion when decoding into opinionated unstructured objects

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This commit is contained in:
Jordan Liggitt 2018-10-22 16:04:06 -04:00
parent b51ac8f7d5
commit 1c5d3ab85e
1 changed files with 11 additions and 1 deletions
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12
staging/src/k8s.io/apimachinery/pkg/runtime/serializer/versioning/versioning.go
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@ -18,6 +18,7 @@ package versioning
import (
"io"
"reflect"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
@ -90,7 +91,16 @@ func (c *codec) Decode(data []byte, defaultGVK *schema.GroupVersionKind, into ru
into = versioned.Last()
}
obj, gvk, err := c.decoder.Decode(data, defaultGVK, into)
// 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
}