type WaitGroup struct {
	count int32
	done  chan struct{}
}

func NewWaitGroup() *WaitGroup {
	return &WaitGroup{
		done: make(chan struct{}),
	}
}

func NewWaitForNCalls(t *testing.T, n int32) (*WaitGroup, func()) {
	wg := &WaitGroup{
		done: make(chan struct{}),
	}

	wg.Add(n)
	return wg, func() {
		select {
		case <-wg.C():

			},
			expectPodUID:      "",
			expectContainerID: "45490e76e0878aaa4d9808f7d2eefba37f093c3efbba9838b6d8ab804d9bd814",
		},
		{
			name: "more than one container ID in cgroups",
			cgroupPaths: []string{
				"/user.slice",
				"/kubepods/pod2c48913c-b29f-11e7-9350-020968147796/9bca8d63d5fa610783847915bcff0ecac1273e5b4bed3f6fa1b07350e0135961",

	udsSockDir := t.TempDir()
	udsSock := filepath.Join(udsSockDir, "cni.sock")
	logger := NewUDSLogger()
	pluginLog.SetOutputLevel(log.DebugLevel) // this will be configured by global.logging.level
	stop := make(chan struct{})
	defer close(stop)
	assert.NoError(t, logger.StartUDSLogServer(udsSock, stop))

	// Configure log to tee to UDS server
	stdout := os.Stdout
	r, w, _ := os.Pipe()
	os.Stdout = w

	// Plaintext forces plain text communication (for talking to port 15010)
	Plaintext bool

	// GCP project number or ID to use for XDS calls, if any.
	GCPProject string

	// Istiod address. For MCP may be different than Xds.
	IstiodAddr string
}

// AttachControlPlaneFlags attaches control-plane flags to a Cobra command.
// (Currently just --endpoint)
func (o *CentralControlPlaneOptions) AttachControlPlaneFlags(cmd *cobra.Command) {

	"istio.io/istio/pkg/log"
)

func NewListener(path string) (net.Listener, error) {
	// Remove unix socket before use.
	if err := os.Remove(path); err != nil && !os.IsNotExist(err) {
		// Anything other than "file not found" is an error.
		return nil, fmt.Errorf("failed to remove unix://%s: %v", path, err)
	}

	// Attempt to create the folder in case it doesn't exist
	if err := os.MkdirAll(filepath.Dir(path), 0o750); err != nil {

	}
	l.loggingServer = loggingServer
	return l
}

// StartUDSLogServer starts up a UDS server which receives log reported from CNI network plugin.
func (l *UDSLogger) StartUDSLogServer(sockAddress string, stop <-chan struct{}) error {
	if sockAddress == "" {
		return nil
	}
	log.Info("Start a UDS server for CNI plugin logs")
	unixListener, err := uds.NewListener(sockAddress)
	if err != nil {

	if sent == nil {
		panic("expected snapshot sent")
	}
	sendAck(ztunClient)

	// now remove the pod
	ztunnelServer := fixture.ztunServer
	errChan := make(chan error)
	go func() {
		errChan <- ztunnelServer.PodDeleted(ctx, uid)
	}()
	// read the msg to delete from ztunnel
	m, fds = readRequest(t, ztunClient)
	assert.Equal(t, len(fds), 0)

	}
	return webhooks.Items, nil
}

// GetWebhooksWithRevision returns webhooks tagged with istio.io/rev=<rev> and NOT TAGGED with istio.io/tag.
// this retrieves the webhook created at revision installation rather than tag webhooks
func GetWebhooksWithRevision(ctx context.Context, client kubernetes.Interface, rev string) ([]admitv1.MutatingWebhookConfiguration, error) {

	"istio.io/istio/pkg/log"
)

func main() {
	// Create context that cancels on termination signal
	ctx, cancel := context.WithCancel(context.Background())
	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)
	go func(sigChan chan os.Signal, cancel context.CancelFunc) {
		sig := <-sigChan
		log.Infof("Exit signal received: %s", sig)
		cancel()
	}(sigChan, cancel)

	rootCmd := cmd.GetCommand()

	"encoding/json"
	"fmt"
	"os"

	"github.com/fsnotify/fsnotify"

	"istio.io/istio/pkg/file"
	"istio.io/istio/pkg/log"
)

type Watcher struct {
	watcher *fsnotify.Watcher
	Events  chan struct{}
	Errors  chan error
}

// Waits until a file is modified (returns nil), the context is cancelled (returns context error), or returns error
func (w *Watcher) Wait(ctx context.Context) error {
	select {
	case <-w.Events: