// +optional
  optional string apiVersion = 3;
}

// ExternalMetricSource indicates how to scale on a metric not associated with
// any Kubernetes object (for example length of queue in cloud
// messaging service, or QPS from loadbalancer running outside of cluster).
message ExternalMetricSource {
  // metric identifies the target metric by name and selector
  optional MetricIdentifier metric = 1;

  // +optional
  optional string apiVersion = 3;
}

// ExternalMetricSource indicates how to scale on a metric not associated with
// any Kubernetes object (for example length of queue in cloud
// messaging service, or QPS from loadbalancer running outside of cluster).
message ExternalMetricSource {
  // metricName is the name of the metric in question.
  optional string metricName = 1;

  // that).
  // This list may be empty, but only if `clusterScope` is true.
  // +optional
  // +listType=set
  repeated string namespaces = 5;
}

// ServiceAccountSubject holds detailed information for service-account-kind subject.
message ServiceAccountSubject {
  // `namespace` is the namespace of matching ServiceAccount objects.
  // Required.
  optional string namespace = 1;

  // that).
  // This list may be empty, but only if `clusterScope` is true.
  // +optional
  // +listType=set
  repeated string namespaces = 5;
}

// ServiceAccountSubject holds detailed information for service-account-kind subject.
message ServiceAccountSubject {
  // `namespace` is the namespace of matching ServiceAccount objects.
  // Required.
  optional string namespace = 1;

  // +optional
  repeated k8s.io.api.core.v1.PersistentVolumeClaim volumeClaimTemplates = 4;

  // serviceName is the name of the service that governs this StatefulSet.
  // This service must exist before the StatefulSet, and is responsible for
  // the network identity of the set. Pods get DNS/hostnames that follow the
  // pattern: pod-specific-string.serviceName.default.svc.cluster.local

  // 'request' - Attributes of the admission request(/pkg/apis/admission/types.go#AdmissionRequest).
  // 'authorizer' - A CEL Authorizer. May be used to perform authorization checks for the principal (user or service account) of the request.
  //   See https://pkg.go.dev/k8s.io/apiserver/pkg/cel/library#Authz
  // 'authorizer.requestResource' - A CEL ResourceCheck constructed from the 'authorizer' and configured with the

// +structType=atomic
message EndpointPort {
  // name represents the name of this port. All ports in an EndpointSlice must have a unique name.
  // If the EndpointSlice is dervied from a Kubernetes service, this corresponds to the Service.ports[].name.
  // Name must either be an empty string or pass DNS_LABEL validation:
  // * must be no more than 63 characters long.
  // * must consist of lower case alphanumeric characters or '-'.

  // +optional
  optional string clusterIP = 3;

  // ClusterIPs is a list of IP addresses assigned to this service, and are
  // usually assigned randomly.  If an address is specified manually, is
  // in-range (as per system configuration), and is not in use, it will be
  // allocated to the service; otherwise creation of the service will fail.

  // +optional
  optional IngressStatus status = 3;
}

// IngressBackend describes all endpoints for a given service and port.
message IngressBackend {
  // Specifies the name of the referenced service.
  // +optional
  optional string serviceName = 1;

  // Specifies the port of the referenced service.
  // +optional
  optional k8s.io.apimachinery.pkg.util.intstr.IntOrString servicePort = 2;

  // +optional
  map<string, string> nodeSelector = 7;

  // ServiceAccountName is the name of the ServiceAccount to use to run this carp.
  // More info: https://kubernetes.io/docs/concepts/security/service-accounts/
  // +optional
  optional string serviceAccountName = 8;

  // DeprecatedServiceAccount is a depreciated alias for ServiceAccountName.
  // Deprecated: Use serviceAccountName instead.