// limitations under the License.

package plugin

// InterceptRuleMgr configures networking tables (e.g. iptables or nftables) for
// redirecting traffic to an Istio proxy.
type InterceptRuleMgr interface {
	Program(podName, netns string, redirect *Redirect) error
}

// Constructor for iptables InterceptRuleMgr
func IptablesInterceptRuleMgr() InterceptRuleMgr {
	return newIPTables()

//
// Instead, we traverse the procfs. Comments on this method are inline.
func getPodNetNs(pod *corev1.Pod) (string, error) {
	// First, find the network namespace id by looking the interface with the given Pod IP.
	// This could break on some platforms if they do not have an interface-per-pod.
	wantID, err := findNetworkIDByIP(pod.Status.PodIP)
	if err != nil {
		return "", fmt.Errorf("network id: %v", err)
	}
	fs, err := procfs.NewFS("/host/proc")

}

// this is used for testing. it should not be changed in regular code.
var getFirstPodFunc func(client corev1client.PodsGetter, namespace string, selector string, timeout time.Duration,
	sortBy func([]*corev1.Pod) sort.Interface) (*corev1.Pod, int, error)

// InferPodInfoFromTypedResource gets a pod name, from an expression like Deployment/httpbin, or Deployment/productpage-v1.bookinfo

	pconstants "istio.io/istio/cni/pkg/constants"
	"istio.io/istio/cni/pkg/ipset"
	"istio.io/istio/cni/pkg/iptables"
	"istio.io/istio/cni/pkg/util"
	"istio.io/istio/pkg/kube"
)

type MeshDataplane interface {
	// called first, (even before Start()).
	ConstructInitialSnapshot(ambientPods []*corev1.Pod) error
	Start(ctx context.Context)

	//	IsPodInMesh(ctx context.Context, pod *metav1.ObjectMeta, netNs string) (bool, error)

	"istio.io/istio/tools/istio-iptables/pkg/cmd"
	"istio.io/istio/tools/istio-iptables/pkg/config"
	"istio.io/istio/tools/istio-iptables/pkg/dependencies"
)

// getNs is a unit test override variable for interface create.
var getNs = ns.GetNS

// Program defines a method which programs iptables based on the parameters
// provided in Redirect.
func (ipt *iptables) Program(podName, netns string, rdrct *Redirect) error {

		// istioctl should keep going if it encounters new Envoy versions; ignore unknown types
		return &exprpb.Type{TypeKind: &exprpb.Type_Dyn{Dyn: &emptypb.Empty{}}}, nil
	}
	return legacyproto.MessageV1(mt.New().Interface()), nil

  // +optional
  optional SubjectAccessReviewStatus status = 3;
}

// NonResourceAttributes includes the authorization attributes available for non-resource requests to the Authorizer interface
message NonResourceAttributes {
  // Path is the URL path of the request
  // +optional
  optional string path = 1;

  // Verb is the standard HTTP verb
  // +optional
  optional string verb = 2;
}

	corev1 "k8s.io/api/core/v1"

	"istio.io/istio/pkg/maps"
	"istio.io/istio/pkg/zdsapi"
)

var ErrPodNotFound = errors.New("netns not provided, but is needed as pod is not in cache")

type PodNetnsCache interface {
	ReadCurrentPodSnapshot() map[string]WorkloadInfo
}

// Hold a cache of node local pods with their netns
// if we don't know the netns, the pod will still be here with a nil netns.
type podNetnsCache struct {

  repeated RuntimeClass items = 2;
}

// RuntimeClassSpec is a specification of a RuntimeClass. It contains parameters
// that are required to describe the RuntimeClass to the Container Runtime
// Interface (CRI) implementation, as well as any other components that need to
// understand how the pod will be run. The RuntimeClassSpec is immutable.
message RuntimeClassSpec {

	if len(was) == 0 {
		fmt.Fprintf(writer, "ERROR: no Istio injection hooks present.\n")
		return nil
	}
	w := table.NewStyleWriter(writer)
	w.SetAddRowFunc(func(obj interface{}) table.Row {
		wa := obj.(webhookAnalysis)
		row := table.Row{
			Cells: make([]table.Cell, 0),
		}
		row.Cells = append(row.Cells, table.NewCell(wa.Name), table.NewCell(wa.Revision))
		if wa.Injected {