// Denied is optional. True if the action would be denied, otherwise
  // false. If both allowed is false and denied is false, then the
  // authorizer has no opinion on whether to authorize the action. Denied
  // may not be true if Allowed is true.
  // +optional
  optional bool denied = 4;

  // Reason is optional.  It indicates why a request was allowed or denied.
  // +optional
  optional string reason = 2;

  // eventTime is the time when this Event was first observed. It is required.
  optional k8s.io.apimachinery.pkg.apis.meta.v1.MicroTime eventTime = 2;

  // series is data about the Event series this event represents or nil if it's a singleton Event.
  // +optional
  optional EventSeries series = 3;

  // This can not be 0 if MaxUnavailable is 0.
  // Absolute number is calculated from percentage by rounding up to a minimum of 1.
  // Default value is 0.
  // Example: when this is set to 30%, at most 30% of the total number of nodes
  // that should be running the daemon pod (i.e. status.desiredNumberScheduled)
  // can have their a new pod created before the old pod is marked as deleted.

message AdmissionRequest {
  // UID is an identifier for the individual request/response. It allows us to distinguish instances of requests which are
  // otherwise identical (parallel requests, requests when earlier requests did not modify etc)
  // The UID is meant to track the round trip (request/response) between the KAS and the WebHook, not the user request.

### CmdAdd Sidecar Workflow

`CmdAdd` is triggered when there is a new pod created. This runs on the node, in a chain of CNI plugins - Istio is
run after the main CNI sets up the pod IP and networking.

1. Check k8s pod namespace against exclusion list (plugin config)

  optional TokenReviewSpec spec = 2;

  // Status is filled in by the server and indicates whether the token can be authenticated.
  // +optional
  optional TokenReviewStatus status = 3;
}

// TokenReviewSpec is a description of the token authentication request.
message TokenReviewSpec {
  // Token is the opaque bearer token.
  // +optional
  optional string token = 1;

      #
      # If the probe is enabled, it is recommended to have delay=0s,period=15s,failureThreshold=4.
      # This ensures the pod is marked ready immediately after the startup probe passes (which has a 1s poll interval),
      # and doesn't spam the readiness endpoint too much
      #
      # If the probe is disabled, it is recommended to have delay=1s,period=2s,failureThreshold=30.

  scope: Namespaced
  versions:
  - additionalPrinterColumns:
    - description: 'CreationTimestamp is a timestamp representing the server time
        when this object was created. It is not guaranteed to be set in happens-before
        order across separate operations. Clients may not set this value. It is represented
        in RFC3339 form and is in UTC. Populated by the system. Read-only. Null for

  // Requested signer for the request. It is a qualified name in the form:
  // `scope-hostname.io/name`.
  // If empty, it will be defaulted:
  //  1. If it's a kubelet client certificate, it is assigned
  //     "kubernetes.io/kube-apiserver-client-kubelet".
  //  2. If it's a kubelet serving certificate, it is assigned
  //     "kubernetes.io/kubelet-serving".
  //  3. Otherwise, it is assigned "kubernetes.io/legacy-unknown".

}

// RuntimeClass defines a class of container runtime supported in the cluster.
// The RuntimeClass is used to determine which container runtime is used to run
// all containers in a pod. RuntimeClasses are (currently) manually defined by a
// user or cluster provisioner, and referenced in the PodSpec. The Kubelet is
// responsible for resolving the RuntimeClassName reference before running the
// pod.  For more details, see