// license that can be found in the LICENSE file.

// Package ioutil implements some I/O utility functions.
//
// Deprecated: As of Go 1.16, the same functionality is now provided
// by package [io] or package [os], and those implementations
// should be preferred in new code.
// See the specific function documentation for details.
package ioutil

import (
	"io"
	"io/fs"
	"os"
	"slices"
	"strings"
)

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

// Package ioutil implements some I/O utility functions which are not covered
// by the standard library.
package ioutil

import (
	"context"
	"errors"
	"io"
	"os"
	"runtime/debug"
	"sync"
	"time"

	"github.com/dustin/go-humanize"

	cloudproviderapi "k8s.io/cloud-provider/api"
	nodeutil "k8s.io/component-helpers/node/util"
	"k8s.io/klog/v2"
	kubeletapis "k8s.io/kubelet/pkg/apis"
	v1helper "k8s.io/kubernetes/pkg/apis/core/v1/helper"
	"k8s.io/kubernetes/pkg/kubelet/events"
	"k8s.io/kubernetes/pkg/kubelet/nodestatus"
	taintutil "k8s.io/kubernetes/pkg/util/taints"
	volutil "k8s.io/kubernetes/pkg/volume/util"
)

		return func() {}
	}
	fixtureDir = filepath.Join(filepath.Dir(filename), "testdata")

	originalNewPrivateKey := pkiutil.NewPrivateKey
	pkiutil.NewPrivateKey = newPrivateKey
	return func() {
		pkiutil.NewPrivateKey = originalNewPrivateKey
	}
}

func newPrivateKey(keyType kubeadmapi.EncryptionAlgorithmType) (crypto.Signer, error) {
	lock.Lock()
	defer lock.Unlock()

	certDir := kubeadmConfig.CertificatesDir
	name := cert.BaseName
	if pkiutil.CSROrKeyExist(certDir, name) {
		return errors.Errorf("%s: key or CSR %s/%s", errExist, certDir, name)
	}
	cfg, err := cert.GetConfig(kubeadmConfig)
	if err != nil {
		return err
	}
	csr, key, err := pkiutil.NewCSRAndKey(cfg)
	if err != nil {
		return err
	}
	err = pkiutil.WriteKey(certDir, name, key)
	if err != nil {
		return err
	}

	key, err := pkiutil.NewPrivateKey(keyType)
	if err != nil {
		return err
	}

	// Write .key and .pub files to disk
	fmt.Printf("[certs] Generating %q key and public key\n", kubeadmconstants.ServiceAccountKeyBaseName)

	if err := pkiutil.WriteKey(certsDir, kubeadmconstants.ServiceAccountKeyBaseName, key); err != nil {
		return err
	}

	allowRCUpgrades, ok := cmdutil.ValueFromFlagsOrConfig(flagSet, options.AllowRCUpgrades, upgradeCfg.Apply.AllowRCUpgrades, &flags.allowRCUpgrades).(*bool)
	if ok {
		flags.allowRCUpgrades = *allowRCUpgrades
	} else {
		return cmdutil.TypeMismatchErr("allowRCUpgrades", "bool")
	}

	"k8s.io/client-go/util/keyutil"

	"k8s.io/kubernetes/cmd/kubeadm/app/util/pkiutil"
)

// SetupCertificateAuthority is a utility function for kubeadm testing that creates a
// CertificateAuthority cert/key pair
func SetupCertificateAuthority(t *testing.T) (*x509.Certificate, crypto.Signer) {
	caCert, caKey, err := pkiutil.NewCertificateAuthority(&pkiutil.CertConfig{
		Config: certutil.Config{CommonName: "kubernetes"},
	})

			}

			if err := bto.ApplyTo(cfg); err != nil {
				return err
			}

			klog.V(1).Infoln("[token] getting Clientsets from kubeconfig file")
			kubeConfigFile = cmdutil.GetKubeConfigPath(kubeConfigFile)
			client, err := cmdutil.GetClientSet(kubeConfigFile, dryRun)
			if err != nil {
				return err
			}

			return RunCreateToken(out, client, cfgPath, cfg, printJoinCommand, certificateKey, kubeConfigFile)

    /**
     * @throws Exception
     */
    public void testGetContentsAsStream() throws Exception {
        final String contents = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><foo/>";
        assertNotNull("1", DomUtil.getContentsAsStream(contents, "UTF-8"));
    }

    /**
     * @throws Exception
     */
    public void testToString() throws Exception {