rebase: update kubernetes to 1.26.1

update kubernetes and its dependencies
to v1.26.1

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/k8s.io/client-go/transport/cache.go

@@ -93,13 +93,13 @@ func (c *tlsTransportCache) get(config *Config) (http.RoundTripper, error) {
 		return nil, err
 	}
 	// The options didn't require a custom TLS config
-	if tlsConfig == nil && config.Dial == nil && config.Proxy == nil {
+	if tlsConfig == nil && config.DialHolder == nil && config.Proxy == nil {
 		return http.DefaultTransport, nil
 	}
 
 	var dial func(ctx context.Context, network, address string) (net.Conn, error)
-	if config.Dial != nil {
-		dial = config.Dial
+	if config.DialHolder != nil {
+		dial = config.DialHolder.Dial
 	} else {
 		dial = (&net.Dialer{
 			Timeout:   30 * time.Second,
@@ -149,14 +149,6 @@ func tlsConfigKey(c *Config) (tlsCacheKey, bool, error) {
 		// cannot determine equality for functions
 		return tlsCacheKey{}, false, nil
 	}
-	if c.Dial != nil && c.DialHolder == nil {
-		// cannot determine equality for dial function that doesn't have non-nil DialHolder set as well
-		return tlsCacheKey{}, false, nil
-	}
-	if c.TLS.GetCert != nil && c.TLS.GetCertHolder == nil {
-		// cannot determine equality for getCert function that doesn't have non-nil GetCertHolder set as well
-		return tlsCacheKey{}, false, nil
-	}
 
 	k := tlsCacheKey{
 		insecure:           c.TLS.Insecure,

vendor/k8s.io/client-go/transport/cache_go118.go

@@ -0,0 +1,24 @@
+//go:build go1.18
+
+/*
+Copyright 2022 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package transport
+
+// assert at compile time that tlsCacheKey is comparable in a way that will never panic at runtime.
+var _ = isComparable[tlsCacheKey]
+
+func isComparable[T comparable]() {}

vendor/k8s.io/client-go/transport/config.go

@@ -67,11 +67,8 @@ type Config struct {
 	// instead of setting this value directly.
 	WrapTransport WrapperFunc
 
-	// Dial specifies the dial function for creating unencrypted TCP connections.
-	// If specified, this transport will be non-cacheable unless DialHolder is also set.
-	Dial func(ctx context.Context, network, address string) (net.Conn, error)
-	// DialHolder can be populated to make transport configs cacheable.
-	// If specified, DialHolder.Dial must be equal to Dial.
+	// DialHolder specifies the dial function for creating unencrypted TCP connections.
+	// This struct indirection is used to make transport configs cacheable.
 	DialHolder *DialHolder
 
 	// Proxy is the proxy func to be used for all requests made by this
@@ -121,7 +118,7 @@ func (c *Config) HasCertAuth() bool {
 
 // HasCertCallback returns whether the configuration has certificate callback or not.
 func (c *Config) HasCertCallback() bool {
-	return c.TLS.GetCert != nil
+	return c.TLS.GetCertHolder != nil
 }
 
 // Wrap adds a transport middleware function that will give the caller
@@ -153,10 +150,7 @@ type TLSConfig struct {
 	NextProtos []string
 
 	// Callback that returns a TLS client certificate. CertData, CertFile, KeyData and KeyFile supercede this field.
-	// If specified, this transport is non-cacheable unless CertHolder is populated.
-	GetCert func() (*tls.Certificate, error)
-	// CertHolder can be populated to make transport configs that set GetCert cacheable.
-	// If set, CertHolder.GetCert must be equal to GetCert.
+	// This struct indirection is used to make transport configs cacheable.
 	GetCertHolder *GetCertHolder
 }
 

vendor/k8s.io/client-go/transport/token_source.go

@@ -18,8 +18,8 @@ package transport
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net/http"
+	"os"
 	"strings"
 	"sync"
 	"time"
@@ -132,7 +132,7 @@ type fileTokenSource struct {
 var _ = oauth2.TokenSource(&fileTokenSource{})
 
 func (ts *fileTokenSource) Token() (*oauth2.Token, error) {
-	tokb, err := ioutil.ReadFile(ts.path)
+	tokb, err := os.ReadFile(ts.path)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read token file %q: %v", ts.path, err)
 	}

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

@@ -22,9 +22,8 @@ import (
 	"crypto/x509"
 	"encoding/pem"
 	"fmt"
-	"io/ioutil"
 	"net/http"
-	"reflect"
+	"os"
 	"sync"
 	"time"
 
@@ -62,20 +61,12 @@ func New(config *Config) (http.RoundTripper, error) {
 }
 
 func isValidHolders(config *Config) bool {
-	if config.TLS.GetCertHolder != nil {
-		if config.TLS.GetCertHolder.GetCert == nil ||
-			config.TLS.GetCert == nil ||
-			reflect.ValueOf(config.TLS.GetCertHolder.GetCert).Pointer() != reflect.ValueOf(config.TLS.GetCert).Pointer() {
-			return false
-		}
+	if config.TLS.GetCertHolder != nil && config.TLS.GetCertHolder.GetCert == nil {
+		return false
 	}
 
-	if config.DialHolder != nil {
-		if config.DialHolder.Dial == nil ||
-			config.Dial == nil ||
-			reflect.ValueOf(config.DialHolder.Dial).Pointer() != reflect.ValueOf(config.Dial).Pointer() {
-			return false
-		}
+	if config.DialHolder != nil && config.DialHolder.Dial == nil {
+		return false
 	}
 
 	return true
@@ -141,7 +132,7 @@ func TLSConfigFor(c *Config) (*tls.Config, error) {
 				return dynamicCertLoader()
 			}
 			if c.HasCertCallback() {
-				cert, err := c.TLS.GetCert()
+				cert, err := c.TLS.GetCertHolder.GetCert()
 				if err != nil {
 					return nil, err
 				}
@@ -182,10 +173,7 @@ func loadTLSFiles(c *Config) error {
 	}
 
 	c.TLS.KeyData, err = dataFromSliceOrFile(c.TLS.KeyData, c.TLS.KeyFile)
-	if err != nil {
-		return err
-	}
-	return nil
+	return err
 }
 
 // dataFromSliceOrFile returns data from the slice (if non-empty), or from the file,
@@ -195,7 +183,7 @@ func dataFromSliceOrFile(data []byte, file string) ([]byte, error) {
 		return data, nil
 	}
 	if len(file) > 0 {
-		fileData, err := ioutil.ReadFile(file)
+		fileData, err := os.ReadFile(file)
 		if err != nil {
 			return []byte{}, err
 		}