// Documentation on CEL: https://kubernetes.io/docs/reference/using-api/cel/
  //
  // Required.
  optional string expression = 2;
}

// MutatingWebhook describes an admission webhook and the resources and operations it applies to.
message MutatingWebhook {
  // The name of the admission webhook.
  // Name should be fully qualified, e.g., imagepolicy.kubernetes.io, where

  // then this field is set to that version. Otherwise this field is left empty.
  // API servers should finish updating its storageVersionStatus entry before
  // serving write operations, so that this field will be in sync with the reality.
  // +optional
  optional string commonEncodingVersion = 2;

  // The latest available observations of the storageVersion's state.
  // +optional

  // This value will be null if an APIService reports subresources but supports no operations on the parent resource
  optional k8s.io.apimachinery.pkg.apis.meta.v1.GroupVersionKind responseKind = 2;

  // scope indicates the scope of a resource, either Cluster or Namespaced
  optional string scope = 3;

  optional string selfLink = 4;

  // UID is the unique in time and space value for this object. It is typically generated by
  // the server on successful creation of a resource and is not allowed to change on PUT
  // operations.
  //
  // Populated by the system.
  // Read-only.
  // More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names#uids
  // +optional
  optional string uid = 5;

  optional string scope = 4;
}

// RuleWithOperations is a tuple of Operations and Resources. It is recommended to make
// sure that all the tuple expansions are valid.
message RuleWithOperations {
  // Operations is the operations the admission hook cares about - CREATE, UPDATE, DELETE, CONNECT or *
  // for all of those operations and any future admission operations that are added.
  // If '*' is present, the length of the slice must be one.

  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.Time startTime = 2;

  // Represents time when the job was completed. It is not guaranteed to
  // be set in happens-before order across separate operations.
  // It is represented in RFC3339 form and is in UTC.
  // The completion time is only set when the job finishes successfully.
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.Time completionTime = 3;

  //
  // +optional
  optional bool attachRequired = 1;

  // podInfoOnMount indicates this CSI volume driver requires additional pod information (like podName, podUID, etc.)
  // during mount operations, if set to true.
  // If set to false, pod information will not be passed on mount.
  // Default is false.
  //
  // The CSI driver specifies podInfoOnMount as part of driver deployment.

  // ResourceRules describes what operations on what resources/subresources the ValidatingAdmissionPolicy matches.
  // The policy cares about an operation if it matches _any_ Rule.
  // +listType=atomic
  // +optional
  repeated NamedRuleWithOperations resourceRules = 3;

  // ExcludeResourceRules describes what operations on what resources/subresources the ValidatingAdmissionPolicy should not care about.

  //
  // +optional
  optional bool attachRequired = 1;

  // podInfoOnMount indicates this CSI volume driver requires additional pod information (like podName, podUID, etc.)
  // during mount operations, if set to true.
  // If set to false, pod information will not be passed on mount.
  // Default is false.
  //
  // The CSI driver specifies podInfoOnMount as part of driver deployment.

  // If allocatedResources is not set, PVC.spec.resources alone is used for quota calculation.
  // If a volume expansion capacity request is lowered, allocatedResources is only
  // lowered if there are no expansion operations in progress and if the actual volume capacity
  // is equal or lower than the requested capacity.
  // This is an alpha field and requires enabling RecoverVolumeExpansionFailure feature.