rebase: update K8s packages to v0.32.1

Update K8s packages in go.mod to v0.32.1

Signed-off-by: Praveen M <m.praveen@ibm.com>

vendor/k8s.io/client-go/rest/client.go

@@ -17,16 +17,21 @@ limitations under the License.
 package rest
 
 import (
+	"fmt"
+	"mime"
 	"net/http"
 	"net/url"
 	"os"
 	"strconv"
 	"strings"
+	"sync/atomic"
 	"time"
 
+	"github.com/munnerz/goautoneg"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/types"
+	clientfeatures "k8s.io/client-go/features"
 	"k8s.io/client-go/util/flowcontrol"
 )
 
@@ -85,7 +90,7 @@ type RESTClient struct {
 	versionedAPIPath string
 
 	// content describes how a RESTClient encodes and decodes responses.
-	content ClientContentConfig
+	content requestClientContentConfigProvider
 
 	// creates BackoffManager that is passed to requests.
 	createBackoffMgr func() BackoffManager
@@ -105,10 +110,6 @@ type RESTClient struct {
 // NewRESTClient creates a new RESTClient. This client performs generic REST functions
 // such as Get, Put, Post, and Delete on specified paths.
 func NewRESTClient(baseURL *url.URL, versionedAPIPath string, config ClientContentConfig, rateLimiter flowcontrol.RateLimiter, client *http.Client) (*RESTClient, error) {
-	if len(config.ContentType) == 0 {
-		config.ContentType = "application/json"
-	}
-
 	base := *baseURL
 	if !strings.HasSuffix(base.Path, "/") {
 		base.Path += "/"
@@ -119,14 +120,53 @@ func NewRESTClient(baseURL *url.URL, versionedAPIPath string, config ClientConte
 	return &RESTClient{
 		base:             &base,
 		versionedAPIPath: versionedAPIPath,
-		content:          config,
+		content:          requestClientContentConfigProvider{base: scrubCBORContentConfigIfDisabled(config)},
 		createBackoffMgr: readExpBackoffConfig,
 		rateLimiter:      rateLimiter,
-
-		Client: client,
+		Client:           client,
 	}, nil
 }
 
+func scrubCBORContentConfigIfDisabled(content ClientContentConfig) ClientContentConfig {
+	if clientfeatures.FeatureGates().Enabled(clientfeatures.ClientsAllowCBOR) {
+		content.Negotiator = clientNegotiatorWithCBORSequenceStreamDecoder{content.Negotiator}
+		return content
+	}
+
+	if mediatype, _, err := mime.ParseMediaType(content.ContentType); err == nil && mediatype == "application/cbor" {
+		content.ContentType = "application/json"
+	}
+
+	clauses := goautoneg.ParseAccept(content.AcceptContentTypes)
+	scrubbed := false
+	for i, clause := range clauses {
+		if clause.Type == "application" && clause.SubType == "cbor" {
+			scrubbed = true
+			clauses[i].SubType = "json"
+		}
+	}
+	if !scrubbed {
+		// No application/cbor in AcceptContentTypes, nothing more to do.
+		return content
+	}
+
+	parts := make([]string, 0, len(clauses))
+	for _, clause := range clauses {
+		// ParseAccept does not store the parameter "q" in Params.
+		params := clause.Params
+		if clause.Q < 1 { // omit q=1, it's the default
+			if params == nil {
+				params = make(map[string]string, 1)
+			}
+			params["q"] = strconv.FormatFloat(clause.Q, 'g', 3, 32)
+		}
+		parts = append(parts, mime.FormatMediaType(fmt.Sprintf("%s/%s", clause.Type, clause.SubType), params))
+	}
+	content.AcceptContentTypes = strings.Join(parts, ",")
+
+	return content
+}
+
 // GetRateLimiter returns rate limiter for a given client, or nil if it's called on a nil client
 func (c *RESTClient) GetRateLimiter() flowcontrol.RateLimiter {
 	if c == nil {
@@ -198,5 +238,106 @@ func (c *RESTClient) Delete() *Request {
 
 // APIVersion returns the APIVersion this RESTClient is expected to use.
 func (c *RESTClient) APIVersion() schema.GroupVersion {
-	return c.content.GroupVersion
+	config, _ := c.content.GetClientContentConfig()
+	return config.GroupVersion
+}
+
+// requestClientContentConfigProvider observes HTTP 415 (Unsupported Media Type) responses to detect
+// that the server does not understand CBOR. Once this has happened, future requests are forced to
+// use JSON so they can succeed. This is convenient for client users that want to prefer CBOR, but
+// also need to interoperate with older servers so requests do not permanently fail. The clients
+// will not default to using CBOR until at least all supported kube-apiservers have enable-CBOR
+// locked to true, so this path will be rarely taken. Additionally, all generated clients accessing
+// built-in kube resources are forced to protobuf, so those will not degrade to JSON.
+type requestClientContentConfigProvider struct {
+	base ClientContentConfig
+
+	// Becomes permanently true if a server responds with HTTP 415 (Unsupported Media Type) to a
+	// request with "Content-Type" header containing the CBOR media type.
+	sawUnsupportedMediaTypeForCBOR atomic.Bool
+}
+
+// GetClientContentConfig returns the ClientContentConfig that should be used for new requests by
+// this client and true if the request ContentType was selected by default.
+func (p *requestClientContentConfigProvider) GetClientContentConfig() (ClientContentConfig, bool) {
+	config := p.base
+
+	defaulted := config.ContentType == ""
+	if defaulted {
+		config.ContentType = "application/json"
+	}
+
+	if !clientfeatures.FeatureGates().Enabled(clientfeatures.ClientsAllowCBOR) {
+		return config, defaulted
+	}
+
+	if defaulted && clientfeatures.FeatureGates().Enabled(clientfeatures.ClientsPreferCBOR) {
+		config.ContentType = "application/cbor"
+	}
+
+	if sawUnsupportedMediaTypeForCBOR := p.sawUnsupportedMediaTypeForCBOR.Load(); !sawUnsupportedMediaTypeForCBOR {
+		return config, defaulted
+	}
+
+	if mediaType, _, _ := mime.ParseMediaType(config.ContentType); mediaType != runtime.ContentTypeCBOR {
+		return config, defaulted
+	}
+
+	// The effective ContentType is CBOR and the client has previously received an HTTP 415 in
+	// response to a CBOR request. Override ContentType to JSON.
+	config.ContentType = runtime.ContentTypeJSON
+	return config, defaulted
+}
+
+// UnsupportedMediaType reports that the server has responded to a request with HTTP 415 Unsupported
+// Media Type.
+func (p *requestClientContentConfigProvider) UnsupportedMediaType(requestContentType string) {
+	if !clientfeatures.FeatureGates().Enabled(clientfeatures.ClientsAllowCBOR) {
+		return
+	}
+
+	// This could be extended to consider the Content-Encoding request header, the Accept and
+	// Accept-Encoding response headers, the request method, and URI (as mentioned in
+	// https://www.rfc-editor.org/rfc/rfc9110.html#section-15.5.16). The request Content-Type
+	// header is sufficient to implement a blanket CBOR fallback mechanism.
+	requestContentType, _, _ = mime.ParseMediaType(requestContentType)
+	switch requestContentType {
+	case runtime.ContentTypeCBOR, string(types.ApplyCBORPatchType):
+		p.sawUnsupportedMediaTypeForCBOR.Store(true)
+	}
+}
+
+// clientNegotiatorWithCBORSequenceStreamDecoder is a ClientNegotiator that delegates to another
+// ClientNegotiator to select the appropriate Encoder or Decoder for a given media type. As a
+// special case, it will resolve "application/cbor-seq" (a CBOR Sequence, the concatenation of zero
+// or more CBOR data items) as an alias for "application/cbor" (exactly one CBOR data item) when
+// selecting a stream decoder.
+type clientNegotiatorWithCBORSequenceStreamDecoder struct {
+	negotiator runtime.ClientNegotiator
+}
+
+func (n clientNegotiatorWithCBORSequenceStreamDecoder) Encoder(contentType string, params map[string]string) (runtime.Encoder, error) {
+	return n.negotiator.Encoder(contentType, params)
+}
+
+func (n clientNegotiatorWithCBORSequenceStreamDecoder) Decoder(contentType string, params map[string]string) (runtime.Decoder, error) {
+	return n.negotiator.Decoder(contentType, params)
+}
+
+func (n clientNegotiatorWithCBORSequenceStreamDecoder) StreamDecoder(contentType string, params map[string]string) (runtime.Decoder, runtime.Serializer, runtime.Framer, error) {
+	if !clientfeatures.FeatureGates().Enabled(clientfeatures.ClientsAllowCBOR) {
+		return n.negotiator.StreamDecoder(contentType, params)
+	}
+
+	switch contentType {
+	case runtime.ContentTypeCBORSequence:
+		return n.negotiator.StreamDecoder(runtime.ContentTypeCBOR, params)
+	case runtime.ContentTypeCBOR:
+		// This media type is only appropriate for exactly one data item, not the zero or
+		// more events of a watch stream.
+		return nil, nil, nil, runtime.NegotiateError{ContentType: contentType, Stream: true}
+	default:
+		return n.negotiator.StreamDecoder(contentType, params)
+	}
+
 }