Update dependency go modules for k8s v1.27.0-rc.0

vendor/k8s.io/kube-openapi/pkg/spec3/encoding.go

@@ -18,7 +18,10 @@ package spec3
 
 import (
 	"encoding/json"
+
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -41,6 +44,9 @@ func (e *Encoding) MarshalJSON() ([]byte, error) {
 }
 
 func (e *Encoding) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, e)
+	}
 	if err := json.Unmarshal(data, &e.EncodingProps); err != nil {
 		return err
 	}
@@ -50,6 +56,20 @@ func (e *Encoding) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+func (e *Encoding) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		EncodingProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+
+	e.Extensions = internal.SanitizeExtensions(x.Extensions)
+	e.EncodingProps = x.EncodingProps
+	return nil
+}
+
 type EncodingProps struct {
 	// Content Type for encoding a specific property
 	ContentType string `json:"contentType,omitempty"`

vendor/k8s.io/kube-openapi/pkg/spec3/example.go

@@ -20,6 +20,9 @@ import (
 	"encoding/json"
 
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
+
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -49,6 +52,9 @@ func (e *Example) MarshalJSON() ([]byte, error) {
 }
 
 func (e *Example) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, e)
+	}
 	if err := json.Unmarshal(data, &e.Refable); err != nil {
 		return err
 	}
@@ -61,6 +67,23 @@ func (e *Example) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+func (e *Example) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		ExampleProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	if err := internal.JSONRefFromMap(&e.Ref.Ref, x.Extensions); err != nil {
+		return err
+	}
+	e.Extensions = internal.SanitizeExtensions(x.Extensions)
+	e.ExampleProps = x.ExampleProps
+
+	return nil
+}
+
 type ExampleProps struct {
 	// Summary holds a short description of the example
 	Summary string `json:"summary,omitempty"`

vendor/k8s.io/kube-openapi/pkg/spec3/external_documentation.go

@@ -18,7 +18,10 @@ package spec3
 
 import (
 	"encoding/json"
+
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -48,6 +51,9 @@ func (e *ExternalDocumentation) MarshalJSON() ([]byte, error) {
 }
 
 func (e *ExternalDocumentation) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, e)
+	}
 	if err := json.Unmarshal(data, &e.ExternalDocumentationProps); err != nil {
 		return err
 	}
@@ -56,3 +62,16 @@ func (e *ExternalDocumentation) UnmarshalJSON(data []byte) error {
 	}
 	return nil
 }
+
+func (e *ExternalDocumentation) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		ExternalDocumentationProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	e.Extensions = internal.SanitizeExtensions(x.Extensions)
+	e.ExternalDocumentationProps = x.ExternalDocumentationProps
+	return nil
+}

vendor/k8s.io/kube-openapi/pkg/spec3/fuzz.go

@@ -1,10 +1,11 @@
 package spec3
 
 import (
-	fuzz "github.com/google/gofuzz"
 	"math/rand"
 	"strings"
 
+	fuzz "github.com/google/gofuzz"
+
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -169,82 +170,85 @@ var OpenAPIV3FuzzFuncs []interface{} = []interface{}{
 		c.Fuzz(&v.VendorExtensible)
 	},
 	func(v *spec.Extensions, c fuzz.Continue) {
-		*v = spec.Extensions{}
 		numChildren := c.Intn(5)
-		if numChildren == 0 {
-			*v = nil
-		}
 		for i := 0; i < numChildren; i++ {
-			v.Add("x-"+randAlphanumString(), c.RandString()+"x")
+			if *v == nil {
+				*v = spec.Extensions{}
+			}
+			(*v)["x-"+c.RandString()] = c.RandString()
 		}
 	},
 	func(v *spec.ExternalDocumentation, c fuzz.Continue) {
 		c.Fuzz(&v.Description)
 		v.URL = "https://" + randAlphanumString()
 	},
+	func(v *spec.SchemaURL, c fuzz.Continue) {
+		*v = spec.SchemaURL("https://" + randAlphanumString())
+	},
+	func(v *spec.SchemaOrBool, c fuzz.Continue) {
+		*v = spec.SchemaOrBool{}
+
+		if c.RandBool() {
+			v.Allows = c.RandBool()
+		} else {
+			v.Schema = &spec.Schema{}
+			v.Allows = true
+			c.Fuzz(&v.Schema)
+		}
+	},
+	func(v *spec.SchemaOrArray, c fuzz.Continue) {
+		*v = spec.SchemaOrArray{}
+		if c.RandBool() {
+			schema := spec.Schema{}
+			c.Fuzz(&schema)
+			v.Schema = &schema
+		} else {
+			v.Schemas = []spec.Schema{}
+			numChildren := c.Intn(5)
+			for i := 0; i < numChildren; i++ {
+				schema := spec.Schema{}
+				c.Fuzz(&schema)
+				v.Schemas = append(v.Schemas, schema)
+			}
+
+		}
+
+	},
+	func(v *spec.SchemaOrStringArray, c fuzz.Continue) {
+		if c.RandBool() {
+			*v = spec.SchemaOrStringArray{}
+			if c.RandBool() {
+				c.Fuzz(&v.Property)
+			} else {
+				c.Fuzz(&v.Schema)
+			}
+		}
+	},
 	func(v *spec.Schema, c fuzz.Continue) {
 		if c.Intn(refChance) == 0 {
 			c.Fuzz(&v.Ref)
 			return
 		}
-		c.Fuzz(&v.VendorExtensible)
-		c.Fuzz(&v.Description)
-		c.Fuzz(&v.Nullable)
-		c.Fuzz(&v.Title)
-		c.Fuzz(&v.Required)
-		c.Fuzz(&v.ExternalDocs)
-		n := c.Intn(8)
-		switch n {
-		case 0:
-			// To prevent exponential growth from recursively generating properties, only allow the schema to be an object with low frequency
-			if c.Intn(5) == 0 {
-				c.Fuzz(&v.Properties)
-				c.Fuzz(&v.MinProperties)
-				c.Fuzz(&v.MaxProperties)
-			} else {
-				v.Type = spec.StringOrArray{"integer"}
-				switch c.Intn(3) {
-				case 0:
-					v.Format = "int32"
-				case 1:
-					v.Format = "int64"
-				}
-				c.Fuzz(&v.MultipleOf)
-				c.Fuzz(&v.Minimum)
-				c.Fuzz(&v.Maximum)
-				c.Fuzz(&v.ExclusiveMaximum)
-				c.Fuzz(&v.ExclusiveMinimum)
-			}
-		case 1:
-			v.Type = spec.StringOrArray{"number"}
-			switch c.Intn(3) {
-			case 0:
-				v.Format = "float"
-			case 1:
-				v.Format = "double"
-			}
-			c.Fuzz(&v.MultipleOf)
-			c.Fuzz(&v.ExclusiveMaximum)
-			c.Fuzz(&v.ExclusiveMinimum)
-			c.Fuzz(&v.Minimum)
-			c.Fuzz(&v.Maximum)
-		case 2:
-			v.Type = spec.StringOrArray{"string"}
-			c.Fuzz(&v.MinLength)
-			c.Fuzz(&v.MaxLength)
-		case 3:
-			v.Type = spec.StringOrArray{"boolean"}
-		case 4:
-			v.Type = spec.StringOrArray{"array"}
-			s := spec.Schema{}
-			c.Fuzz(&s)
-			v.Items = &spec.SchemaOrArray{Schema: &s}
-		case 5:
-			c.Fuzz(&v.AnyOf)
-		case 6:
-			c.Fuzz(&v.AllOf)
-		case 7:
-			c.Fuzz(&v.OneOf)
+		if c.RandBool() {
+			// file schema
+			c.Fuzz(&v.Default)
+			c.Fuzz(&v.Description)
+			c.Fuzz(&v.Example)
+			c.Fuzz(&v.ExternalDocs)
+
+			c.Fuzz(&v.Format)
+			c.Fuzz(&v.ReadOnly)
+			c.Fuzz(&v.Required)
+			c.Fuzz(&v.Title)
+			v.Type = spec.StringOrArray{"file"}
+
+		} else {
+			// normal schema
+			c.Fuzz(&v.SchemaProps)
+			c.Fuzz(&v.SwaggerSchemaProps)
+			c.Fuzz(&v.VendorExtensible)
+			c.Fuzz(&v.ExtraProps)
 		}
+
 	},
 }

vendor/k8s.io/kube-openapi/pkg/spec3/header.go

@@ -20,6 +20,8 @@ import (
 	"encoding/json"
 
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -50,6 +52,9 @@ func (h *Header) MarshalJSON() ([]byte, error) {
 }
 
 func (h *Header) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, h)
+	}
 	if err := json.Unmarshal(data, &h.Refable); err != nil {
 		return err
 	}
@@ -63,6 +68,22 @@ func (h *Header) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+func (h *Header) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		HeaderProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	if err := internal.JSONRefFromMap(&h.Ref.Ref, x.Extensions); err != nil {
+		return err
+	}
+	h.Extensions = internal.SanitizeExtensions(x.Extensions)
+	h.HeaderProps = x.HeaderProps
+	return nil
+}
+
 // HeaderProps a struct that describes a header object
 type HeaderProps struct {
 	// Description holds a brief description of the parameter

vendor/k8s.io/kube-openapi/pkg/spec3/media_type.go

@@ -18,7 +18,10 @@ package spec3
 
 import (
 	"encoding/json"
+
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -44,6 +47,9 @@ func (m *MediaType) MarshalJSON() ([]byte, error) {
 }
 
 func (m *MediaType) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, m)
+	}
 	if err := json.Unmarshal(data, &m.MediaTypeProps); err != nil {
 		return err
 	}
@@ -53,6 +59,20 @@ func (m *MediaType) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+func (m *MediaType) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		MediaTypeProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	m.Extensions = internal.SanitizeExtensions(x.Extensions)
+	m.MediaTypeProps = x.MediaTypeProps
+
+	return nil
+}
+
 // MediaTypeProps a struct that allows you to specify content format, more at https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#mediaTypeObject
 type MediaTypeProps struct {
 	// Schema holds the schema defining the type used for the media type

vendor/k8s.io/kube-openapi/pkg/spec3/operation.go

@@ -20,6 +20,8 @@ import (
 	"encoding/json"
 
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -46,12 +48,28 @@ func (o *Operation) MarshalJSON() ([]byte, error) {
 
 // UnmarshalJSON hydrates this items instance with the data from JSON
 func (o *Operation) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, o)
+	}
 	if err := json.Unmarshal(data, &o.OperationProps); err != nil {
 		return err
 	}
 	return json.Unmarshal(data, &o.VendorExtensible)
 }
 
+func (o *Operation) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		OperationProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	o.Extensions = internal.SanitizeExtensions(x.Extensions)
+	o.OperationProps = x.OperationProps
+	return nil
+}
+
 // OperationProps describes a single API operation on a path, more at https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#operationObject
 type OperationProps struct {
 	// Tags holds a list of tags for API documentation control

vendor/k8s.io/kube-openapi/pkg/spec3/parameter.go

@@ -20,6 +20,8 @@ import (
 	"encoding/json"
 
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -50,6 +52,10 @@ func (p *Parameter) MarshalJSON() ([]byte, error) {
 }
 
 func (p *Parameter) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, p)
+	}
+
 	if err := json.Unmarshal(data, &p.Refable); err != nil {
 		return err
 	}
@@ -63,6 +69,22 @@ func (p *Parameter) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+func (p *Parameter) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		ParameterProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	if err := internal.JSONRefFromMap(&p.Ref.Ref, x.Extensions); err != nil {
+		return err
+	}
+	p.Extensions = internal.SanitizeExtensions(x.Extensions)
+	p.ParameterProps = x.ParameterProps
+	return nil
+}
+
 // ParameterProps a struct that describes a single operation parameter, more at https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#parameterObject
 type ParameterProps struct {
 	// Name holds the name of the parameter

vendor/k8s.io/kube-openapi/pkg/spec3/path.go

@@ -18,9 +18,12 @@ package spec3
 
 import (
 	"encoding/json"
+	"fmt"
 	"strings"
 
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -45,6 +48,9 @@ func (p *Paths) MarshalJSON() ([]byte, error) {
 
 // UnmarshalJSON hydrates this items instance with the data from JSON
 func (p *Paths) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, p)
+	}
 	var res map[string]json.RawMessage
 	if err := json.Unmarshal(data, &res); err != nil {
 		return err
@@ -74,6 +80,59 @@ func (p *Paths) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+func (p *Paths) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	tok, err := dec.ReadToken()
+	if err != nil {
+		return err
+	}
+	switch k := tok.Kind(); k {
+	case 'n':
+		*p = Paths{}
+		return nil
+	case '{':
+		for {
+			tok, err := dec.ReadToken()
+			if err != nil {
+				return err
+			}
+
+			if tok.Kind() == '}' {
+				return nil
+			}
+
+			switch k := tok.String(); {
+			case internal.IsExtensionKey(k):
+				var ext any
+				if err := opts.UnmarshalNext(dec, &ext); err != nil {
+					return err
+				}
+
+				if p.Extensions == nil {
+					p.Extensions = make(map[string]any)
+				}
+				p.Extensions[k] = ext
+			case len(k) > 0 && k[0] == '/':
+				pi := Path{}
+				if err := opts.UnmarshalNext(dec, &pi); err != nil {
+					return err
+				}
+
+				if p.Paths == nil {
+					p.Paths = make(map[string]*Path)
+				}
+				p.Paths[k] = &pi
+			default:
+				_, err := dec.ReadValue() // skip value
+				if err != nil {
+					return err
+				}
+			}
+		}
+	default:
+		return fmt.Errorf("unknown JSON kind: %v", k)
+	}
+}
+
 // Path describes the operations available on a single path, more at https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#pathItemObject
 //
 // Note that this struct is actually a thin wrapper around PathProps to make it referable and extensible
@@ -101,6 +160,9 @@ func (p *Path) MarshalJSON() ([]byte, error) {
 }
 
 func (p *Path) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, p)
+	}
 	if err := json.Unmarshal(data, &p.Refable); err != nil {
 		return err
 	}
@@ -113,6 +175,24 @@ func (p *Path) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+func (p *Path) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		PathProps
+	}
+
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	if err := internal.JSONRefFromMap(&p.Ref.Ref, x.Extensions); err != nil {
+		return err
+	}
+	p.Extensions = internal.SanitizeExtensions(x.Extensions)
+	p.PathProps = x.PathProps
+
+	return nil
+}
+
 // PathProps describes the operations available on a single path, more at https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#pathItemObject
 type PathProps struct {
 	// Summary holds a summary for all operations in this path

vendor/k8s.io/kube-openapi/pkg/spec3/request_body.go

@@ -20,6 +20,8 @@ import (
 	"encoding/json"
 
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -50,6 +52,9 @@ func (r *RequestBody) MarshalJSON() ([]byte, error) {
 }
 
 func (r *RequestBody) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, r)
+	}
 	if err := json.Unmarshal(data, &r.Refable); err != nil {
 		return err
 	}
@@ -71,3 +76,19 @@ type RequestBodyProps struct {
 	// Required determines if the request body is required in the request
 	Required bool `json:"required,omitempty"`
 }
+
+func (r *RequestBody) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		RequestBodyProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	if err := internal.JSONRefFromMap(&r.Ref.Ref, x.Extensions); err != nil {
+		return err
+	}
+	r.Extensions = internal.SanitizeExtensions(x.Extensions)
+	r.RequestBodyProps = x.RequestBodyProps
+	return nil
+}

vendor/k8s.io/kube-openapi/pkg/spec3/response.go

@@ -18,9 +18,12 @@ package spec3
 
 import (
 	"encoding/json"
+	"fmt"
 	"strconv"
 
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -46,13 +49,15 @@ func (r *Responses) MarshalJSON() ([]byte, error) {
 }
 
 func (r *Responses) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, r)
+	}
 	if err := json.Unmarshal(data, &r.ResponsesProps); err != nil {
 		return err
 	}
 	if err := json.Unmarshal(data, &r.VendorExtensible); err != nil {
 		return err
 	}
-
 	return nil
 }
 
@@ -78,6 +83,9 @@ func (r ResponsesProps) MarshalJSON() ([]byte, error) {
 
 // UnmarshalJSON unmarshals responses from JSON
 func (r *ResponsesProps) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, r)
+	}
 	var res map[string]json.RawMessage
 	if err := json.Unmarshal(data, &res); err != nil {
 		return err
@@ -106,6 +114,60 @@ func (r *ResponsesProps) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+func (r *Responses) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) (err error) {
+	tok, err := dec.ReadToken()
+	if err != nil {
+		return err
+	}
+	switch k := tok.Kind(); k {
+	case 'n':
+		*r = Responses{}
+		return nil
+	case '{':
+		for {
+			tok, err := dec.ReadToken()
+			if err != nil {
+				return err
+			}
+			if tok.Kind() == '}' {
+				return nil
+			}
+			switch k := tok.String(); {
+			case internal.IsExtensionKey(k):
+				var ext any
+				if err := opts.UnmarshalNext(dec, &ext); err != nil {
+					return err
+				}
+
+				if r.Extensions == nil {
+					r.Extensions = make(map[string]any)
+				}
+				r.Extensions[k] = ext
+			case k == "default":
+				resp := Response{}
+				if err := opts.UnmarshalNext(dec, &resp); err != nil {
+					return err
+				}
+				r.ResponsesProps.Default = &resp
+			default:
+				if nk, err := strconv.Atoi(k); err == nil {
+					resp := Response{}
+					if err := opts.UnmarshalNext(dec, &resp); err != nil {
+						return err
+					}
+
+					if r.StatusCodeResponses == nil {
+						r.StatusCodeResponses = map[int]*Response{}
+					}
+					r.StatusCodeResponses[nk] = &resp
+				}
+			}
+		}
+	default:
+		return fmt.Errorf("unknown JSON kind: %v", k)
+	}
+}
+
 // Response describes a single response from an API Operation, more at https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#responseObject
 //
 // Note that this struct is actually a thin wrapper around ResponseProps to make it referable and extensible
@@ -133,6 +195,9 @@ func (r *Response) MarshalJSON() ([]byte, error) {
 }
 
 func (r *Response) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, r)
+	}
 	if err := json.Unmarshal(data, &r.Refable); err != nil {
 		return err
 	}
@@ -142,7 +207,22 @@ func (r *Response) UnmarshalJSON(data []byte) error {
 	if err := json.Unmarshal(data, &r.VendorExtensible); err != nil {
 		return err
 	}
+	return nil
+}
 
+func (r *Response) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		ResponseProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	if err := internal.JSONRefFromMap(&r.Ref.Ref, x.Extensions); err != nil {
+		return err
+	}
+	r.Extensions = internal.SanitizeExtensions(x.Extensions)
+	r.ResponseProps = x.ResponseProps
 	return nil
 }
 
@@ -183,6 +263,9 @@ func (r *Link) MarshalJSON() ([]byte, error) {
 }
 
 func (r *Link) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, r)
+	}
 	if err := json.Unmarshal(data, &r.Refable); err != nil {
 		return err
 	}
@@ -196,6 +279,22 @@ func (r *Link) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+func (l *Link) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		LinkProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	if err := internal.JSONRefFromMap(&l.Ref.Ref, x.Extensions); err != nil {
+		return err
+	}
+	l.Extensions = internal.SanitizeExtensions(x.Extensions)
+	l.LinkProps = x.LinkProps
+	return nil
+}
+
 // LinkProps describes a single response from an API Operation, more at https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#responseObject
 type LinkProps struct {
 	// OperationId is the name of an existing, resolvable OAS operation

vendor/k8s.io/kube-openapi/pkg/spec3/server.go

@@ -18,7 +18,10 @@ package spec3
 
 import (
 	"encoding/json"
+
 	"github.com/go-openapi/swag"
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -50,6 +53,10 @@ func (s *Server) MarshalJSON() ([]byte, error) {
 }
 
 func (s *Server) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, s)
+	}
+
 	if err := json.Unmarshal(data, &s.ServerProps); err != nil {
 		return err
 	}
@@ -59,6 +66,20 @@ func (s *Server) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+func (s *Server) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		ServerProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	s.Extensions = internal.SanitizeExtensions(x.Extensions)
+	s.ServerProps = x.ServerProps
+
+	return nil
+}
+
 type ServerVariable struct {
 	ServerVariableProps
 	spec.VendorExtensible
@@ -87,6 +108,9 @@ func (s *ServerVariable) MarshalJSON() ([]byte, error) {
 }
 
 func (s *ServerVariable) UnmarshalJSON(data []byte) error {
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, s)
+	}
 	if err := json.Unmarshal(data, &s.ServerVariableProps); err != nil {
 		return err
 	}
@@ -95,3 +119,17 @@ func (s *ServerVariable) UnmarshalJSON(data []byte) error {
 	}
 	return nil
 }
+
+func (s *ServerVariable) UnmarshalNextJSON(opts jsonv2.UnmarshalOptions, dec *jsonv2.Decoder) error {
+	var x struct {
+		spec.Extensions
+		ServerVariableProps
+	}
+	if err := opts.UnmarshalNext(dec, &x); err != nil {
+		return err
+	}
+	s.Extensions = internal.SanitizeExtensions(x.Extensions)
+	s.ServerVariableProps = x.ServerVariableProps
+
+	return nil
+}

vendor/k8s.io/kube-openapi/pkg/spec3/spec.go

@@ -17,6 +17,10 @@ limitations under the License.
 package spec3
 
 import (
+	"encoding/json"
+
+	"k8s.io/kube-openapi/pkg/internal"
+	jsonv2 "k8s.io/kube-openapi/pkg/internal/third_party/go-json-experiment/json"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 )
 
@@ -35,3 +39,12 @@ type OpenAPI struct {
 	// ExternalDocs holds additional external documentation
 	ExternalDocs *ExternalDocumentation `json:"externalDocs,omitempty"`
 }
+
+func (o *OpenAPI) UnmarshalJSON(data []byte) error {
+	type OpenAPIWithNoFunctions OpenAPI
+	p := (*OpenAPIWithNoFunctions)(o)
+	if internal.UseOptimizedJSONUnmarshalingV3 {
+		return jsonv2.Unmarshal(data, &p)
+	}
+	return json.Unmarshal(data, &p)
+}