)

const (
	bearerTokenPrefix = "Bearer "
)

var citadelClientLog = log.RegisterScope("citadelclient", "citadel client debugging")

type CitadelClient struct {
	// It means enable tls connection to Citadel if this is not nil.
	tlsOpts  *TLSOptions
	client   pb.IstioCertificateServiceClient
	conn     *grpc.ClientConn
	provider credentials.PerRPCCredentials
	opts     *security.Options
}

	customapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta2"
	metricsapi "k8s.io/metrics/pkg/apis/metrics/v1beta1"
	resourceclient "k8s.io/metrics/pkg/client/clientset/versioned/typed/metrics/v1beta1"
	customclient "k8s.io/metrics/pkg/client/custom_metrics"
	externalclient "k8s.io/metrics/pkg/client/external_metrics"
)

const (
	metricServerDefaultMetricWindow = time.Minute
)

	Close() error
}

func (client *Client) send(call *Call) {
	client.reqMutex.Lock()
	defer client.reqMutex.Unlock()

	// Register this call.
	client.mutex.Lock()
	if client.shutdown || client.closing {
		client.mutex.Unlock()
		call.Error = ErrShutdown
		call.done()
		return
	}
	seq := client.seq
	client.seq++
	client.pending[seq] = call
	client.mutex.Unlock()

	// Encode and send the request.

		<property name="charset">"UTF-8"</property>
	</component>

	<component name="crawlerClientCreator"
		class="org.codelibs.fess.crawler.client.CrawlerClientCreator">
	</component>

	<component name="clientFactory"
		class="org.codelibs.fess.crawler.client.CrawlerClientFactory" instance="prototype">
		<postConstruct name="addClient">
			<arg>["http:.*", "https:.*"]</arg>

func NewPluginClient(r string, socketPath string, h ClientHandler) Client {
	return &client{
		resource: r,
		socket:   socketPath,
		handler:  h,
	}
}

// Connect is for establishing a gRPC connection between device manager and device plugin.
func (c *client) Connect() error {
	client, conn, err := dial(c.socket)
	if err != nil {

	if err != nil {
		return nil, err
	}
	if client, ok := cm.cache.Get(string(cacheKey)); ok {
		return client.(*rest.RESTClient), nil
	}

	cfg, err := cm.hookClientConfig(cc)
	if err != nil {
		return nil, err
	}

	client, err := rest.UnversionedRESTClientFor(cfg)
	if err == nil {
		cm.cache.Add(string(cacheKey), client)
	}
	return client, err
}

	return c.c.Close()
}

// NewClient returns a new [rpc.Client] to handle requests to the
// set of services at the other end of the connection.
func NewClient(conn io.ReadWriteCloser) *rpc.Client {
	return rpc.NewClientWithCodec(NewClientCodec(conn))
}

// Dial connects to a JSON-RPC server at the specified network address.
func Dial(network, address string) (*rpc.Client, error) {
	conn, err := net.Dial(network, address)

	"google.golang.org/grpc/credentials/insecure"

	"k8s.io/cri-client/pkg/util"
	"k8s.io/kubelet/pkg/apis/podresources/v1"
	"k8s.io/kubelet/pkg/apis/podresources/v1alpha1"
)

// Note: Consumers of the pod resources API should not be importing this package.
// They should copy paste the function in their project.

// GetV1alpha1Client returns a client for the PodResourcesLister grpc service
// Note: This is deprecated

	if err != nil {
		return nil, err
	}
	client := proto.NewEchoTestServiceClient(conn)

	return &Client{
		conn:   conn,
		client: client,
	}, nil
}

// Close the EchoClient and free any resources.
func (c *Client) Close() error {
	if c.conn != nil {
		return c.conn.Close()
	}
	return nil
}

func (c *Client) Echo(ctx context.Context, request *proto.EchoRequest) (Response, error) {

)

type ClientSettings struct {
	RPS      int
	Locality locality.Instance
}

type Client struct {
	mesh *Instance
	s    ClientSettings
}

func (c *Client) Mesh() *Instance {
	return c.mesh
}

func (c *Client) Locality() locality.Instance {
	return c.s.Locality
}

func (c *Client) SendRequests(conn network.Connection, numRequests int, done func()) {
	go func() {
		wg := sync.WaitGroup{}