"cmd/go/internal/lockedfile"
	"cmd/go/internal/par"
	"cmd/go/internal/robustio"
	"cmd/go/internal/str"
	"cmd/go/internal/trace"

	"golang.org/x/mod/module"
	"golang.org/x/mod/sumdb/dirhash"
	modzip "golang.org/x/mod/zip"
)

var downloadCache par.ErrCache[module.Version, string] // version → directory

var ErrToolchain = errors.New("internal error: invalid operation on toolchain module")

	testcases := []struct {
		name      string
		nodeIP    string
		criPodIPs []string
		podIPs    []v1.PodIP
	}{
		{
			name:      "Simple",
			nodeIP:    "",
			criPodIPs: []string{"10.0.0.1"},
			podIPs: []v1.PodIP{
				{IP: "10.0.0.1"},
			},
		},
		{
			name:      "Dual-stack",
			nodeIP:    "",
			criPodIPs: []string{"10.0.0.1", "fd01::1234"},

		// Inbound downstream metrics are named as: http.{pod_ip}_{port}.downstream_rq_*
		// Other outbound downstream metrics are numerous and not very interesting for a sidecar.
		// specifying http.{pod_ip}_  as a prefix will capture these downstream metrics.
		return substituteValues(inclusionOption, "{pod_ip}", nodeIPs)
	}

	extraStatTags := make([]string, 0, len(config.ExtraStatTags))

func validateNodeIP(nodeIP net.IP) error {
	// Honor IP limitations set in setNodeStatus()
	if nodeIP.To4() == nil && nodeIP.To16() == nil {
		return fmt.Errorf("nodeIP must be a valid IP address")
	}
	if nodeIP.IsLoopback() {
		return fmt.Errorf("nodeIP can't be loopback address")
	}
	if nodeIP.IsMulticast() {
		return fmt.Errorf("nodeIP can't be a multicast address")
	}

	var podStatus corev1.PodStatus
	if v6IP {
		podStatus = corev1.PodStatus{
			PodIP:  "e9ac:1e77:90ca:399f:4d6d:ece2:2f9b:3164",
			PodIPs: []corev1.PodIP{{IP: "e9ac:1e77:90ca:399f:4d6d:ece2:2f9b:3164"}, {IP: "e9ac:1e77:90ca:399f:4d6d:ece2:2f9b:3165"}},
		}
	} else {
		podStatus = corev1.PodStatus{
			PodIP:  "2.2.2.2",
			PodIPs: []corev1.PodIP{{IP: "2.2.2.2"}, {IP: "3.3.3.3"}},
		}
	}

	return &corev1.Pod{

		return nil
	}
	return err
}

// Get any IPs currently assigned to the Pod.
//
// If 'PodIPs' exists, it is preferred (and should be guaranteed to contain the address in 'PodIP'),
// otherwise fallback to 'PodIP'.
//
// Note that very early in the pod's lifecycle (before all the node CNI plugin invocations finish)
// K8S may not have received the pod IPs yet, and may not report the pod as having any.

			name:   "simple pod not running and not have podIP",
			inputs: []any{},
			pod: &v1.Pod{
				TypeMeta: metav1.TypeMeta{},
				ObjectMeta: metav1.ObjectMeta{
					Name:      "name",
					Namespace: "ns",
				},
				Spec: v1.PodSpec{},
				Status: v1.PodStatus{
					Phase: v1.PodPending,
				},
			},
			result: nil,
		},
		{
			name:   "simple pod not running but have podIP",
			inputs: []any{},
			pod: &v1.Pod{

	pod := &corev1.Pod{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "pod-bingo",
			Namespace: "funkyns",
		},
		Spec: corev1.PodSpec{
			NodeName: NodeName,
		},
		Status: corev1.PodStatus{
			PodIP: fakePodIP,
		},
	}
	ns := &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: "funkyns"}}

	client := kube.NewFakeClient(ns, pod)

	// We are expecting at most 1 calls to the mock, wait for them

	inbound  istioKube.PortForwarder
	outbound istioKube.PortForwarder
	pod      v1.Pod
}

func (k kubeComponent) Namespace() namespace.Instance {
	return k.ns
}

func (k kubeComponent) PodIP() string {
	return k.pod.Status.PodIP
}

func (k kubeComponent) Inbound() string {
	return k.inbound.Address()
}

func (k kubeComponent) Outbound() string {
	return k.outbound.Address()
}

		"upstream_rq_time,upstream_cx_tx_bytes_total,upstream_cx_rx_bytes_total,upstream_cx_total"

	// example downstream metric: http.10.16.48.230_8080.downstream_rq_2xx
	// http.<pod_ip>_<port>.downstream_rq_2xx
	// This metric is collected at the inbound listener at a sidecar.
	// All the other downstream metrics at a sidecar are from the application to the local sidecar.