// This field cannot be empty for new Events.
  optional string reportingController = 4;

  // reportingInstance is the ID of the controller instance, e.g. `kubelet-xyzf`.
  // This field cannot be empty for new Events and it can have at most 128 characters.
  optional string reportingInstance = 5;

}

// StorageVersionSpec is an empty spec.
message StorageVersionSpec {
}

// API server instances report the versions they can decode and the version they
// encode objects to when persisting objects in the backend.
message StorageVersionStatus {
  // The reported versions per API server instance.
  // +optional
  // +listType=map
  // +listMapKey=apiServerID
  repeated ServerStorageVersion storageVersions = 1;

  // EvaluationError is an indication that some error occurred during the authorization check.
  // It is entirely possible to get an error and be able to continue determine authorization status in spite of it.
  // For instance, RBAC can be missing a role, but enough roles are still present and bound to reason about the request.
  // +optional
  optional string evaluationError = 3;
}

// Versions are in descending order of preference, with the first version being the preferred entry.
message APIGroupDiscovery {
  // Standard object's metadata.
  // The only field completed will be name. For instance, resourceVersion will be empty.
  // name is the name of the API group whose discovery information is presented here.
  // name is allowed to be "" to represent the legacy, ungroupified resources.

Ztunnel was not designed to be a feature-rich data plane.
Quite the opposite - an *aggressively* small feature set is the key feature that makes ztunnel viable.
It very intentionally does not offer L7 (HTTP) functionality, for instance, which would likely violate some of the goals above, without contributing to them.
Instead, the rich functionality that service mesh is traditionally associated with is deferred to the waypoints.

  // EvaluationError is an indication that some error occurred during the authorization check.
  // It is entirely possible to get an error and be able to continue determine authorization status in spite of it.
  // For instance, RBAC can be missing a role, but enough roles are still present and bound to reason about the request.
  // +optional
  optional string evaluationError = 3;
}

// AdmissionRequest describes the admission.Attributes for the admission request.
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)

}

// ScaleSpec describes the attributes of a scale subresource
message ScaleSpec {
  // desired number of instances for the scaled object.
  // +optional
  optional int32 replicas = 1;
}

// ScaleStatus represents the current status of a scale subresource.
message ScaleStatus {
  // actual number of observed instances of the scaled object.
  optional int32 replicas = 1;

a set of control plane settings and components. While the entire mesh respects the same APIs and config,
apps may target different 'environments' which contain different instances and variants of Istio.

- Better security: separate Istio components reside in different namespaces, allowing different teams or
roles to manage different parts of Istio. For example, a security team would maintain the

  // observedGeneration represents the .metadata.generation that the condition was set based upon.
  // For instance, if .metadata.generation is currently 12, but the .status.conditions[x].observedGeneration is 9, the condition is out of date
  // with respect to the current state of the instance.
  // +optional
  // +kubebuilder:validation:Minimum=0
  optional int64 observedGeneration = 3;