// Copyright 2018 Google LLC.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

syntax = "proto3";

package google.container.v1beta1;

import "google/api/annotations.proto";
import "google/iam/v1/iam_policy.proto";
import "google/iam/v1/policy.proto";
import "google/protobuf/empty.proto";

option csharp_namespace = "Google.Cloud.Container.V1Beta1";
option go_package = "google.golang.org/genproto/googleapis/container/v1beta1;container";
option java_multiple_files = true;
option java_outer_classname = "ClusterServiceProto";
option java_package = "com.google.container.v1beta1";
option php_namespace = "Google\\Cloud\\Container\\V1beta1";


// Google Kubernetes Engine Cluster Manager v1beta1
service ClusterManager {
  // Lists all clusters owned by a project in either the specified zone or all
  // zones.
  rpc ListClusters(ListClustersRequest) returns (ListClustersResponse) {
    option (google.api.http) = {
      get: "/v1beta1/{parent=projects/*/locations/*}/clusters"
      additional_bindings {
        get: "/v1beta1/projects/{project_id}/zones/{zone}/clusters"
      }
    };
  }

  // Gets the details for a specific cluster.
  rpc GetCluster(GetClusterRequest) returns (Cluster) {
    option (google.api.http) = {
      get: "/v1beta1/{name=projects/*/locations/*/clusters/*}"
      additional_bindings {
        get: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}"
      }
    };
  }

  // Creates a cluster, consisting of the specified number and type of Google
  // Compute Engine instances.
  //
  // By default, the cluster is created in the project's
  // [default network](/compute/docs/networks-and-firewalls#networks).
  //
  // One firewall is added for the cluster. After cluster creation,
  // the cluster creates routes for each node to allow the containers
  // on that node to communicate with all other instances in the
  // cluster.
  //
  // Finally, an entry is added to the project's global metadata indicating
  // which CIDR range is being used by the cluster.
  rpc CreateCluster(CreateClusterRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{parent=projects/*/locations/*}/clusters"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters"
        body: "*"
      }
    };
  }

  // Updates the settings for a specific cluster.
  rpc UpdateCluster(UpdateClusterRequest) returns (Operation) {
    option (google.api.http) = {
      put: "/v1beta1/{name=projects/*/locations/*/clusters/*}"
      body: "*"
      additional_bindings {
        put: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}"
        body: "*"
      }
    };
  }

  // Updates the version and/or image type of a specific node pool.
  rpc UpdateNodePool(UpdateNodePoolRequest) returns (Operation) {
    option (google.api.http) = {
      put: "/v1beta1/{name=projects/*/locations/*/clusters/*/nodePools/*}"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/nodePools/{node_pool_id}/update"
        body: "*"
      }
    };
  }

  // Sets the autoscaling settings of a specific node pool.
  rpc SetNodePoolAutoscaling(SetNodePoolAutoscalingRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*/nodePools/*}:setAutoscaling"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/nodePools/{node_pool_id}/autoscaling"
        body: "*"
      }
    };
  }

  // Sets the logging service for a specific cluster.
  rpc SetLoggingService(SetLoggingServiceRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:setLogging"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/logging"
        body: "*"
      }
    };
  }

  // Sets the monitoring service for a specific cluster.
  rpc SetMonitoringService(SetMonitoringServiceRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:setMonitoring"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/monitoring"
        body: "*"
      }
    };
  }

  // Sets the addons for a specific cluster.
  rpc SetAddonsConfig(SetAddonsConfigRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:setAddons"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/addons"
        body: "*"
      }
    };
  }

  // Sets the locations for a specific cluster.
  rpc SetLocations(SetLocationsRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:setLocations"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/locations"
        body: "*"
      }
    };
  }

  // Updates the master for a specific cluster.
  rpc UpdateMaster(UpdateMasterRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:updateMaster"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/master"
        body: "*"
      }
    };
  }

  // Used to set master auth materials. Currently supports :-
  // Changing the admin password for a specific cluster.
  // This can be either via password generation or explicitly set.
  // Modify basic_auth.csv and reset the K8S API server.
  rpc SetMasterAuth(SetMasterAuthRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:setMasterAuth"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}:setMasterAuth"
        body: "*"
      }
    };
  }

  // Deletes the cluster, including the Kubernetes endpoint and all worker
  // nodes.
  //
  // Firewalls and routes that were configured during cluster creation
  // are also deleted.
  //
  // Other Google Compute Engine resources that might be in use by the cluster
  // (e.g. load balancer resources) will not be deleted if they weren't present
  // at the initial create time.
  rpc DeleteCluster(DeleteClusterRequest) returns (Operation) {
    option (google.api.http) = {
      delete: "/v1beta1/{name=projects/*/locations/*/clusters/*}"
      additional_bindings {
        delete: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}"
      }
    };
  }

  // Lists all operations in a project in a specific zone or all zones.
  rpc ListOperations(ListOperationsRequest) returns (ListOperationsResponse) {
    option (google.api.http) = {
      get: "/v1beta1/{parent=projects/*/locations/*}/operations"
      additional_bindings {
        get: "/v1beta1/projects/{project_id}/zones/{zone}/operations"
      }
    };
  }

  // Gets the specified operation.
  rpc GetOperation(GetOperationRequest) returns (Operation) {
    option (google.api.http) = {
      get: "/v1beta1/{name=projects/*/locations/*/operations/*}"
      additional_bindings {
        get: "/v1beta1/projects/{project_id}/zones/{zone}/operations/{operation_id}"
      }
    };
  }

  // Cancels the specified operation.
  rpc CancelOperation(CancelOperationRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/operations/*}:cancel"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/operations/{operation_id}:cancel"
        body: "*"
      }
    };
  }

  // Returns configuration info about the Kubernetes Engine service.
  rpc GetServerConfig(GetServerConfigRequest) returns (ServerConfig) {
    option (google.api.http) = {
      get: "/v1beta1/{name=projects/*/locations/*}/serverConfig"
      additional_bindings {
        get: "/v1beta1/projects/{project_id}/zones/{zone}/serverconfig"
      }
    };
  }

  // Lists the node pools for a cluster.
  rpc ListNodePools(ListNodePoolsRequest) returns (ListNodePoolsResponse) {
    option (google.api.http) = {
      get: "/v1beta1/{parent=projects/*/locations/*/clusters/*}/nodePools"
      additional_bindings {
        get: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/nodePools"
      }
    };
  }

  // Retrieves the node pool requested.
  rpc GetNodePool(GetNodePoolRequest) returns (NodePool) {
    option (google.api.http) = {
      get: "/v1beta1/{name=projects/*/locations/*/clusters/*/nodePools/*}"
      additional_bindings {
        get: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/nodePools/{node_pool_id}"
      }
    };
  }

  // Creates a node pool for a cluster.
  rpc CreateNodePool(CreateNodePoolRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{parent=projects/*/locations/*/clusters/*}/nodePools"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/nodePools"
        body: "*"
      }
    };
  }

  // Deletes a node pool from a cluster.
  rpc DeleteNodePool(DeleteNodePoolRequest) returns (Operation) {
    option (google.api.http) = {
      delete: "/v1beta1/{name=projects/*/locations/*/clusters/*/nodePools/*}"
      additional_bindings {
        delete: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/nodePools/{node_pool_id}"
      }
    };
  }

  // Roll back the previously Aborted or Failed NodePool upgrade.
  // This will be an no-op if the last upgrade successfully completed.
  rpc RollbackNodePoolUpgrade(RollbackNodePoolUpgradeRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*/nodePools/*}:rollback"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/nodePools/{node_pool_id}:rollback"
        body: "*"
      }
    };
  }

  // Sets the NodeManagement options for a node pool.
  rpc SetNodePoolManagement(SetNodePoolManagementRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*/nodePools/*}:setManagement"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/nodePools/{node_pool_id}/setManagement"
        body: "*"
      }
    };
  }

  // Sets labels on a cluster.
  rpc SetLabels(SetLabelsRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:setResourceLabels"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/resourceLabels"
        body: "*"
      }
    };
  }

  // Enables or disables the ABAC authorization mechanism on a cluster.
  rpc SetLegacyAbac(SetLegacyAbacRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:setLegacyAbac"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/legacyAbac"
        body: "*"
      }
    };
  }

  // Start master IP rotation.
  rpc StartIPRotation(StartIPRotationRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:startIpRotation"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}:startIpRotation"
        body: "*"
      }
    };
  }

  // Completes master IP rotation.
  rpc CompleteIPRotation(CompleteIPRotationRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:completeIpRotation"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}:completeIpRotation"
        body: "*"
      }
    };
  }

  // Sets the size for a specific node pool.
  rpc SetNodePoolSize(SetNodePoolSizeRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*/nodePools/*}:setSize"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}/nodePools/{node_pool_id}/setSize"
        body: "*"
      }
    };
  }

  // Enables/Disables Network Policy for a cluster.
  rpc SetNetworkPolicy(SetNetworkPolicyRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:setNetworkPolicy"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}:setNetworkPolicy"
        body: "*"
      }
    };
  }

  // Sets the maintenance policy for a cluster.
  rpc SetMaintenancePolicy(SetMaintenancePolicyRequest) returns (Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/clusters/*}:setMaintenancePolicy"
      body: "*"
      additional_bindings {
        post: "/v1beta1/projects/{project_id}/zones/{zone}/clusters/{cluster_id}:setMaintenancePolicy"
        body: "*"
      }
    };
  }

  // Lists subnetworks that are usable for creating clusters in a project.
  rpc ListUsableSubnetworks(ListUsableSubnetworksRequest) returns (ListUsableSubnetworksResponse) {
    option (google.api.http) = {
      get: "/v1beta1/{parent=projects/*}/aggregated/usableSubnetworks"
    };
  }

  // Used to fetch locations that offer GKE.
  rpc ListLocations(ListLocationsRequest) returns (ListLocationsResponse) {
    option (google.api.http) = {
      get: "/v1beta1/{parent=projects/*}/locations"
    };
  }
}

// Parameters that describe the nodes in a cluster.
message NodeConfig {
  // The name of a Google Compute Engine [machine
  // type](/compute/docs/machine-types) (e.g.
  // `n1-standard-1`).
  //
  // If unspecified, the default machine type is
  // `n1-standard-1`.
  string machine_type = 1;

  // Size of the disk attached to each node, specified in GB.
  // The smallest allowed disk size is 10GB.
  //
  // If unspecified, the default disk size is 100GB.
  int32 disk_size_gb = 2;

  // The set of Google API scopes to be made available on all of the
  // node VMs under the "default" service account.
  //
  // The following scopes are recommended, but not required, and by default are
  // not included:
  //
  // * `https://www.googleapis.com/auth/compute` is required for mounting
  // persistent storage on your nodes.
  // * `https://www.googleapis.com/auth/devstorage.read_only` is required for
  // communicating with **gcr.io**
  // (the [Google Container Registry](/container-registry/)).
  //
  // If unspecified, no scopes are added, unless Cloud Logging or Cloud
  // Monitoring are enabled, in which case their required scopes will be added.
  repeated string oauth_scopes = 3;

  // The Google Cloud Platform Service Account to be used by the node VMs. If
  // no Service Account is specified, the "default" service account is used.
  string service_account = 9;

  // The metadata key/value pairs assigned to instances in the cluster.
  //
  // Keys must conform to the regexp [a-zA-Z0-9-_]+ and be less than 128 bytes
  // in length. These are reflected as part of a URL in the metadata server.
  // Additionally, to avoid ambiguity, keys must not conflict with any other
  // metadata keys for the project or be one of the reserved keys:
  //  "cluster-location"
  //  "cluster-name"
  //  "cluster-uid"
  //  "configure-sh"
  //  "enable-oslogin"
  //  "gci-ensure-gke-docker"
  //  "gci-update-strategy"
  //  "instance-template"
  //  "kube-env"
  //  "startup-script"
  //  "user-data"
  //
  // Values are free-form strings, and only have meaning as interpreted by
  // the image running in the instance. The only restriction placed on them is
  // that each value's size must be less than or equal to 32 KB.
  //
  // The total size of all keys and values must be less than 512 KB.
  map<string, string> metadata = 4;

  // The image type to use for this node. Note that for a given image type,
  // the latest version of it will be used.
  string image_type = 5;

  // The map of Kubernetes labels (key/value pairs) to be applied to each node.
  // These will added in addition to any default label(s) that
  // Kubernetes may apply to the node.
  // In case of conflict in label keys, the applied set may differ depending on
  // the Kubernetes version -- it's best to assume the behavior is undefined
  // and conflicts should be avoided.
  // For more information, including usage and the valid values, see:
  // https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
  map<string, string> labels = 6;

  // The number of local SSD disks to be attached to the node.
  //
  // The limit for this value is dependant upon the maximum number of
  // disks available on a machine per zone. See:
  // https://cloud.google.com/compute/docs/disks/local-ssd#local_ssd_limits
  // for more information.
  int32 local_ssd_count = 7;

  // The list of instance tags applied to all nodes. Tags are used to identify
  // valid sources or targets for network firewalls and are specified by
  // the client during cluster or node pool creation. Each tag within the list
  // must comply with RFC1035.
  repeated string tags = 8;

  // Whether the nodes are created as preemptible VM instances. See:
  // https://cloud.google.com/compute/docs/instances/preemptible for more
  // inforamtion about preemptible VM instances.
  bool preemptible = 10;

  // A list of hardware accelerators to be attached to each node.
  // See https://cloud.google.com/compute/docs/gpus for more information about
  // support for GPUs.
  repeated AcceleratorConfig accelerators = 11;

  // Type of the disk attached to each node (e.g. 'pd-standard' or 'pd-ssd')
  //
  // If unspecified, the default disk type is 'pd-standard'
  string disk_type = 12;

  // Minimum CPU platform to be used by this instance. The instance may be
  // scheduled on the specified or newer CPU platform. Applicable values are the
  // friendly names of CPU platforms, such as
  // <code>minCpuPlatform: &quot;Intel Haswell&quot;</code> or
  // <code>minCpuPlatform: &quot;Intel Sandy Bridge&quot;</code>. For more
  // information, read [how to specify min CPU
  // platform](https://cloud.google.com/compute/docs/instances/specify-min-cpu-platform)
  string min_cpu_platform = 13;

  // The workload metadata configuration for this node.
  WorkloadMetadataConfig workload_metadata_config = 14;

  // List of kubernetes taints to be applied to each node.
  //
  // For more information, including usage and the valid values, see:
  // https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
  repeated NodeTaint taints = 15;
}

// Kubernetes taint is comprised of three fields: key, value, and effect. Effect
// can only be one of three types:  NoSchedule, PreferNoSchedule or NoExecute.
//
// For more information, including usage and the valid values, see:
// https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
message NodeTaint {
  // Possible values for Effect in taint.
  enum Effect {
    // Not set
    EFFECT_UNSPECIFIED = 0;

    // NoSchedule
    NO_SCHEDULE = 1;

    // PreferNoSchedule
    PREFER_NO_SCHEDULE = 2;

    // NoExecute
    NO_EXECUTE = 3;
  }

  // Key for taint.
  string key = 1;

  // Value for taint.
  string value = 2;

  // Effect for taint.
  Effect effect = 3;
}

// The authentication information for accessing the master endpoint.
// Authentication can be done using HTTP basic auth or using client
// certificates.
message MasterAuth {
  // The username to use for HTTP basic authentication to the master endpoint.
  // For clusters v1.6.0 and later, basic authentication can be disabled by
  // leaving username unspecified (or setting it to the empty string).
  string username = 1;

  // The password to use for HTTP basic authentication to the master endpoint.
  // Because the master endpoint is open to the Internet, you should create a
  // strong password.  If a password is provided for cluster creation, username
  // must be non-empty.
  string password = 2;

  // Configuration for client certificate authentication on the cluster. For
  // clusters before v1.12, if no configuration is specified, a client
  // certificate is issued.
  ClientCertificateConfig client_certificate_config = 3;

  // [Output only] Base64-encoded public certificate that is the root of
  // trust for the cluster.
  string cluster_ca_certificate = 100;

  // [Output only] Base64-encoded public certificate used by clients to
  // authenticate to the cluster endpoint.
  string client_certificate = 101;

  // [Output only] Base64-encoded private key used by clients to authenticate
  // to the cluster endpoint.
  string client_key = 102;
}

// Configuration for client certificates on the cluster.
message ClientCertificateConfig {
  // Issue a client certificate.
  bool issue_client_certificate = 1;
}

// Configuration for the addons that can be automatically spun up in the
// cluster, enabling additional functionality.
message AddonsConfig {
  // Configuration for the HTTP (L7) load balancing controller addon, which
  // makes it easy to set up HTTP load balancers for services in a cluster.
  HttpLoadBalancing http_load_balancing = 1;

  // Configuration for the horizontal pod autoscaling feature, which
  // increases or decreases the number of replica pods a replication controller
  // has based on the resource usage of the existing pods.
  HorizontalPodAutoscaling horizontal_pod_autoscaling = 2;

  // Configuration for the Kubernetes Dashboard.
  KubernetesDashboard kubernetes_dashboard = 3;

  // Configuration for NetworkPolicy. This only tracks whether the addon
  // is enabled or not on the Master, it does not track whether network policy
  // is enabled for the nodes.
  NetworkPolicyConfig network_policy_config = 4;

  // Configuration for Istio, an open platform to connect, manage, and secure
  // microservices.
  IstioConfig istio_config = 5;

  // Configuration for the Cloud Run addon. The `IstioConfig` addon must be
  // enabled in order to enable Cloud Run addon. This option can only be enabled
  // at cluster creation time.
  CloudRunConfig cloud_run_config = 7;
}

// Configuration options for the HTTP (L7) load balancing controller addon,
// which makes it easy to set up HTTP load balancers for services in a cluster.
message HttpLoadBalancing {
  // Whether the HTTP Load Balancing controller is enabled in the cluster.
  // When enabled, it runs a small pod in the cluster that manages the load
  // balancers.
  bool disabled = 1;
}

// Configuration options for the horizontal pod autoscaling feature, which
// increases or decreases the number of replica pods a replication controller
// has based on the resource usage of the existing pods.
message HorizontalPodAutoscaling {
  // Whether the Horizontal Pod Autoscaling feature is enabled in the cluster.
  // When enabled, it ensures that a Heapster pod is running in the cluster,
  // which is also used by the Cloud Monitoring service.
  bool disabled = 1;
}

// Configuration for the Kubernetes Dashboard.
message KubernetesDashboard {
  // Whether the Kubernetes Dashboard is enabled for this cluster.
  bool disabled = 1;
}

// Configuration for NetworkPolicy. This only tracks whether the addon
// is enabled or not on the Master, it does not track whether network policy
// is enabled for the nodes.
message NetworkPolicyConfig {
  // Whether NetworkPolicy is enabled for this cluster.
  bool disabled = 1;
}

// Configuration options for private clusters.
message PrivateClusterConfig {
  // Whether nodes have internal IP addresses only. If enabled, all nodes are
  // given only RFC 1918 private addresses and communicate with the master via
  // private networking.
  bool enable_private_nodes = 1;

  // Whether the master's internal IP address is used as the cluster endpoint.
  bool enable_private_endpoint = 2;

  // The IP range in CIDR notation to use for the hosted master network. This
  // range will be used for assigning internal IP addresses to the master or
  // set of masters, as well as the ILB VIP. This range must not overlap with
  // any other ranges in use within the cluster's network.
  string master_ipv4_cidr_block = 3;

  // Output only. The internal IP address of this cluster's master endpoint.
  string private_endpoint = 4;

  // Output only. The external IP address of this cluster's master endpoint.
  string public_endpoint = 5;
}

// Configuration options for Istio addon.
message IstioConfig {
  // Istio auth mode, https://istio.io/docs/concepts/security/mutual-tls.html
  enum IstioAuthMode {
    // auth not enabled
    AUTH_NONE = 0;

    // auth mutual TLS enabled
    AUTH_MUTUAL_TLS = 1;
  }

  // Whether Istio is enabled for this cluster.
  bool disabled = 1;

  // The specified Istio auth mode, either none, or mutual TLS.
  IstioAuthMode auth = 2;
}

// Configuration options for the Cloud Run feature.
message CloudRunConfig {
  // Whether Cloud Run addon is enabled for this cluster.
  bool disabled = 1;
}

// Configuration options for the master authorized networks feature. Enabled
// master authorized networks will disallow all external traffic to access
// Kubernetes master through HTTPS except traffic from the given CIDR blocks,
// Google Compute Engine Public IPs and Google Prod IPs.
message MasterAuthorizedNetworksConfig {
  // CidrBlock contains an optional name and one CIDR block.
  message CidrBlock {
    // display_name is an optional field for users to identify CIDR blocks.
    string display_name = 1;

    // cidr_block must be specified in CIDR notation.
    string cidr_block = 2;
  }

  // Whether or not master authorized networks is enabled.
  bool enabled = 1;

  // cidr_blocks define up to 10 external networks that could access
  // Kubernetes master through HTTPS.
  repeated CidrBlock cidr_blocks = 2;
}

// Configuration for the legacy Attribute Based Access Control authorization
// mode.
message LegacyAbac {
  // Whether the ABAC authorizer is enabled for this cluster. When enabled,
  // identities in the system, including service accounts, nodes, and
  // controllers, will have statically granted permissions beyond those
  // provided by the RBAC configuration or IAM.
  bool enabled = 1;
}

// Configuration options for the NetworkPolicy feature.
// https://kubernetes.io/docs/concepts/services-networking/networkpolicies/
message NetworkPolicy {
  // Allowed Network Policy providers.
  enum Provider {
    // Not set
    PROVIDER_UNSPECIFIED = 0;

    // Tigera (Calico Felix).
    CALICO = 1;
  }

  // The selected network policy provider.
  Provider provider = 1;

  // Whether network policy is enabled on the cluster.
  bool enabled = 2;
}

// Configuration for controlling how IPs are allocated in the cluster.
message IPAllocationPolicy {
  // Whether alias IPs will be used for pod IPs in the cluster.
  bool use_ip_aliases = 1;

  // Whether a new subnetwork will be created automatically for the cluster.
  //
  // This field is only applicable when `use_ip_aliases` is true.
  bool create_subnetwork = 2;

  // A custom subnetwork name to be used if `create_subnetwork` is true.  If
  // this field is empty, then an automatic name will be chosen for the new
  // subnetwork.
  string subnetwork_name = 3;

  // This field is deprecated, use cluster_ipv4_cidr_block.
  string cluster_ipv4_cidr = 4 [deprecated = true];

  // This field is deprecated, use node_ipv4_cidr_block.
  string node_ipv4_cidr = 5 [deprecated = true];

  // This field is deprecated, use services_ipv4_cidr_block.
  string services_ipv4_cidr = 6 [deprecated = true];

  // The name of the secondary range to be used for the cluster CIDR
  // block.  The secondary range will be used for pod IP
  // addresses. This must be an existing secondary range associated
  // with the cluster subnetwork.
  //
  // This field is only applicable with use_ip_aliases and
  // create_subnetwork is false.
  string cluster_secondary_range_name = 7;

  // The name of the secondary range to be used as for the services
  // CIDR block.  The secondary range will be used for service
  // ClusterIPs. This must be an existing secondary range associated
  // with the cluster subnetwork.
  //
  // This field is only applicable with use_ip_aliases and
  // create_subnetwork is false.
  string services_secondary_range_name = 8;

  // The IP address range for the cluster pod IPs. If this field is set, then
  // `cluster.cluster_ipv4_cidr` must be left blank.
  //
  // This field is only applicable when `use_ip_aliases` is true.
  //
  // Set to blank to have a range chosen with the default size.
  //
  // Set to /netmask (e.g. `/14`) to have a range chosen with a specific
  // netmask.
  //
  // Set to a
  // [CIDR](http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing)
  // notation (e.g. `10.96.0.0/14`) from the RFC-1918 private networks (e.g.
  // `10.0.0.0/8`, `172.16.0.0/12`, `192.168.0.0/16`) to pick a specific range
  // to use.
  string cluster_ipv4_cidr_block = 9;

  // The IP address range of the instance IPs in this cluster.
  //
  // This is applicable only if `create_subnetwork` is true.
  //
  // Set to blank to have a range chosen with the default size.
  //
  // Set to /netmask (e.g. `/14`) to have a range chosen with a specific
  // netmask.
  //
  // Set to a
  // [CIDR](http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing)
  // notation (e.g. `10.96.0.0/14`) from the RFC-1918 private networks (e.g.
  // `10.0.0.0/8`, `172.16.0.0/12`, `192.168.0.0/16`) to pick a specific range
  // to use.
  string node_ipv4_cidr_block = 10;

  // The IP address range of the services IPs in this cluster. If blank, a range
  // will be automatically chosen with the default size.
  //
  // This field is only applicable when `use_ip_aliases` is true.
  //
  // Set to blank to have a range chosen with the default size.
  //
  // Set to /netmask (e.g. `/14`) to have a range chosen with a specific
  // netmask.
  //
  // Set to a
  // [CIDR](http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing)
  // notation (e.g. `10.96.0.0/14`) from the RFC-1918 private networks (e.g.
  // `10.0.0.0/8`, `172.16.0.0/12`, `192.168.0.0/16`) to pick a specific range
  // to use.
  string services_ipv4_cidr_block = 11;

  // If true, allow allocation of cluster CIDR ranges that overlap with certain
  // kinds of network routes. By default we do not allow cluster CIDR ranges to
  // intersect with any user declared routes. With allow_route_overlap == true,
  // we allow overlapping with CIDR ranges that are larger than the cluster CIDR
  // range.
  //
  // If this field is set to true, then cluster and services CIDRs must be
  // fully-specified (e.g. `10.96.0.0/14`, but not `/14`), which means:
  // 1) When `use_ip_aliases` is true, `cluster_ipv4_cidr_block` and
  //    `services_ipv4_cidr_block` must be fully-specified.
  // 2) When `use_ip_aliases` is false, `cluster.cluster_ipv4_cidr` muse be
  //    fully-specified.
  bool allow_route_overlap = 12;

  // The IP address range of the Cloud TPUs in this cluster. If unspecified, a
  // range will be automatically chosen with the default size.
  //
  // This field is only applicable when `use_ip_aliases` is true.
  //
  // If unspecified, the range will use the default size.
  //
  // Set to /netmask (e.g. `/14`) to have a range chosen with a specific
  // netmask.
  //
  // Set to a
  // [CIDR](http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing)
  // notation (e.g. `10.96.0.0/14`) from the RFC-1918 private networks (e.g.
  // `10.0.0.0/8`, `172.16.0.0/12`, `192.168.0.0/16`) to pick a specific range
  // to use.
  string tpu_ipv4_cidr_block = 13;
}

// Configuration for Binary Authorization.
message BinaryAuthorization {
  // Enable Binary Authorization for this cluster. If enabled, all container
  // images will be validated by Google Binauthz.
  bool enabled = 1;
}

// Configuration for the PodSecurityPolicy feature.
message PodSecurityPolicyConfig {
  // Enable the PodSecurityPolicy controller for this cluster. If enabled, pods
  // must be valid under a PodSecurityPolicy to be created.
  bool enabled = 1;
}

// A Google Kubernetes Engine cluster.
message Cluster {
  // The current status of the cluster.
  enum Status {
    // Not set.
    STATUS_UNSPECIFIED = 0;

    // The PROVISIONING state indicates the cluster is being created.
    PROVISIONING = 1;

    // The RUNNING state indicates the cluster has been created and is fully
    // usable.
    RUNNING = 2;

    // The RECONCILING state indicates that some work is actively being done on
    // the cluster, such as upgrading the master or node software. Details can
    // be found in the `statusMessage` field.
    RECONCILING = 3;

    // The STOPPING state indicates the cluster is being deleted.
    STOPPING = 4;

    // The ERROR state indicates the cluster may be unusable. Details
    // can be found in the `statusMessage` field.
    ERROR = 5;

    // The DEGRADED state indicates the cluster requires user action to restore
    // full functionality. Details can be found in the `statusMessage` field.
    DEGRADED = 6;
  }

  // The name of this cluster. The name must be unique within this project
  // and zone, and can be up to 40 characters with the following restrictions:
  //
  // * Lowercase letters, numbers, and hyphens only.
  // * Must start with a letter.
  // * Must end with a number or a letter.
  string name = 1;

  // An optional description of this cluster.
  string description = 2;

  // The number of nodes to create in this cluster. You must ensure that your
  // Compute Engine <a href="/compute/docs/resource-quotas">resource quota</a>
  // is sufficient for this number of instances. You must also have available
  // firewall and routes quota.
  // For requests, this field should only be used in lieu of a
  // "node_pool" object, since this configuration (along with the
  // "node_config") will be used to create a "NodePool" object with an
  // auto-generated name. Do not use this and a node_pool at the same time.
  int32 initial_node_count = 3;

  // Parameters used in creating the cluster's nodes.
  // See `nodeConfig` for the description of its properties.
  // For requests, this field should only be used in lieu of a
  // "node_pool" object, since this configuration (along with the
  // "initial_node_count") will be used to create a "NodePool" object with an
  // auto-generated name. Do not use this and a node_pool at the same time.
  // For responses, this field will be populated with the node configuration of
  // the first node pool.
  //
  // If unspecified, the defaults are used.
  NodeConfig node_config = 4;

  // The authentication information for accessing the master endpoint.
  // If unspecified, the defaults are used:
  // For clusters before v1.12, if master_auth is unspecified, `username` will
  // be set to "admin", a random password will be generated, and a client
  // certificate will be issued.
  MasterAuth master_auth = 5;

  // The logging service the cluster should use to write logs.
  // Currently available options:
  //
  // * `logging.googleapis.com` - the Google Cloud Logging service.
  // * `none` - no logs will be exported from the cluster.
  // * if left as an empty string,`logging.googleapis.com` will be used.
  string logging_service = 6;

  // The monitoring service the cluster should use to write metrics.
  // Currently available options:
  //
  // * `monitoring.googleapis.com` - the Google Cloud Monitoring service.
  // * `none` - no metrics will be exported from the cluster.
  // * if left as an empty string, `monitoring.googleapis.com` will be used.
  string monitoring_service = 7;

  // The name of the Google Compute Engine
  // [network](/compute/docs/networks-and-firewalls#networks) to which the
  // cluster is connected. If left unspecified, the `default` network
  // will be used. On output this shows the network ID instead of
  // the name.
  string network = 8;

  // The IP address range of the container pods in this cluster, in
  // [CIDR](http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing)
  // notation (e.g. `10.96.0.0/14`). Leave blank to have
  // one automatically chosen or specify a `/14` block in `10.0.0.0/8`.
  string cluster_ipv4_cidr = 9;

  // Configurations for the various addons available to run in the cluster.
  AddonsConfig addons_config = 10;

  // The name of the Google Compute Engine
  // [subnetwork](/compute/docs/subnetworks) to which the
  // cluster is connected. On output this shows the subnetwork ID instead of
  // the name.
  string subnetwork = 11;

  // The node pools associated with this cluster.
  // This field should not be set if "node_config" or "initial_node_count" are
  // specified.
  repeated NodePool node_pools = 12;

  // The list of Google Compute Engine
  // [zones](/compute/docs/zones#available) in which the cluster's nodes
  // should be located.
  repeated string locations = 13;

  // Kubernetes alpha features are enabled on this cluster. This includes alpha
  // API groups (e.g. v1beta1) and features that may not be production ready in
  // the kubernetes version of the master and nodes.
  // The cluster has no SLA for uptime and master/node upgrades are disabled.
  // Alpha enabled clusters are automatically deleted thirty days after
  // creation.
  bool enable_kubernetes_alpha = 14;

  // The resource labels for the cluster to use to annotate any related
  // Google Compute Engine resources.
  map<string, string> resource_labels = 15;

  // The fingerprint of the set of labels for this cluster.
  string label_fingerprint = 16;

  // Configuration for the legacy ABAC authorization mode.
  LegacyAbac legacy_abac = 18;

  // Configuration options for the NetworkPolicy feature.
  NetworkPolicy network_policy = 19;

  // Configuration for cluster IP allocation.
  IPAllocationPolicy ip_allocation_policy = 20;

  // The configuration options for master authorized networks feature.
  MasterAuthorizedNetworksConfig master_authorized_networks_config = 22;

  // Configure the maintenance policy for this cluster.
  MaintenancePolicy maintenance_policy = 23;

  // Configuration for Binary Authorization.
  BinaryAuthorization binary_authorization = 24;

  // Configuration for the PodSecurityPolicy feature.
  PodSecurityPolicyConfig pod_security_policy_config = 25;

  // Cluster-level autoscaling configuration.
  ClusterAutoscaling autoscaling = 26;

  // Configuration for cluster networking.
  NetworkConfig network_config = 27;

  // If this is a private cluster setup. Private clusters are clusters that, by
  // default have no external IP addresses on the nodes and where nodes and the
  // master communicate over private IP addresses.
  // This field is deprecated, use private_cluster_config.enable_private_nodes
  // instead.
  bool private_cluster = 28 [deprecated = true];

  // The IP prefix in CIDR notation to use for the hosted master network.
  // This prefix will be used for assigning private IP addresses to the
  // master or set of masters, as well as the ILB VIP.
  // This field is deprecated, use
  // private_cluster_config.master_ipv4_cidr_block instead.
  string master_ipv4_cidr_block = 29 [deprecated = true];

  // The default constraint on the maximum number of pods that can be run
  // simultaneously on a node in the node pool of this cluster. Only honored
  // if cluster created with IP Alias support.
  MaxPodsConstraint default_max_pods_constraint = 30;

  // Configuration for exporting resource usages. Resource usage export is
  // disabled when this config unspecified.
  ResourceUsageExportConfig resource_usage_export_config = 33;

  // Configuration for private cluster.
  PrivateClusterConfig private_cluster_config = 37;

  // Cluster-level Vertical Pod Autoscaling configuration.
  VerticalPodAutoscaling vertical_pod_autoscaling = 39;

  // [Output only] Server-defined URL for the resource.
  string self_link = 100;

  // [Output only] The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field is deprecated, use location instead.
  string zone = 101 [deprecated = true];

  // [Output only] The IP address of this cluster's master endpoint.
  // The endpoint can be accessed from the internet at
  // `https://username:password@endpoint/`.
  //
  // See the `masterAuth` property of this resource for username and
  // password information.
  string endpoint = 102;

  // The initial Kubernetes version for this cluster.  Valid versions are those
  // found in validMasterVersions returned by getServerConfig.  The version can
  // be upgraded over time; such upgrades are reflected in
  // currentMasterVersion and currentNodeVersion.
  //
  // Users may specify either explicit versions offered by
  // Kubernetes Engine or version aliases, which have the following behavior:
  //
  // - "latest": picks the highest valid Kubernetes version
  // - "1.X": picks the highest valid patch+gke.N patch in the 1.X version
  // - "1.X.Y": picks the highest valid gke.N patch in the 1.X.Y version
  // - "1.X.Y-gke.N": picks an explicit Kubernetes version
  // - "","-": picks the default Kubernetes version
  string initial_cluster_version = 103;

  // [Output only] The current software version of the master endpoint.
  string current_master_version = 104;

  // [Output only] Deprecated, use
  // [NodePool.version](/kubernetes-engine/docs/reference/rest/v1beta1/projects.zones.clusters.nodePool)
  // instead. The current version of the node software components.
  // If they are currently at multiple versions because they're in the process
  // of being upgraded, this reflects the minimum version of all nodes.
  string current_node_version = 105 [deprecated = true];

  // [Output only] The time the cluster was created, in
  // [RFC3339](https://www.ietf.org/rfc/rfc3339.txt) text format.
  string create_time = 106;

  // [Output only] The current status of this cluster.
  Status status = 107;

  // [Output only] Additional information about the current status of this
  // cluster, if available.
  string status_message = 108;

  // [Output only] The size of the address space on each node for hosting
  // containers. This is provisioned from within the `container_ipv4_cidr`
  // range.
  int32 node_ipv4_cidr_size = 109;

  // [Output only] The IP address range of the Kubernetes services in
  // this cluster, in
  // [CIDR](http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing)
  // notation (e.g. `1.2.3.4/29`). Service addresses are
  // typically put in the last `/16` from the container CIDR.
  string services_ipv4_cidr = 110;

  // Deprecated. Use node_pools.instance_group_urls.
  repeated string instance_group_urls = 111 [deprecated = true];

  // [Output only]  The number of nodes currently in the cluster. Deprecated.
  // Call Kubernetes API directly to retrieve node information.
  int32 current_node_count = 112 [deprecated = true];

  // [Output only] The time the cluster will be automatically
  // deleted in [RFC3339](https://www.ietf.org/rfc/rfc3339.txt) text format.
  string expire_time = 113;

  // [Output only] The name of the Google Compute Engine
  // [zone](/compute/docs/regions-zones/regions-zones#available) or
  // [region](/compute/docs/regions-zones/regions-zones#available) in which
  // the cluster resides.
  string location = 114;

  // Enable the ability to use Cloud TPUs in this cluster.
  bool enable_tpu = 115;

  // [Output only] The IP address range of the Cloud TPUs in this cluster, in
  // [CIDR](http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing)
  // notation (e.g. `1.2.3.4/29`).
  string tpu_ipv4_cidr_block = 116;

  // Which conditions caused the current cluster state.
  repeated StatusCondition conditions = 118;
}

// ClusterUpdate describes an update to the cluster. Exactly one update can
// be applied to a cluster with each request, so at most one field can be
// provided.
message ClusterUpdate {
  // The Kubernetes version to change the nodes to (typically an
  // upgrade).
  //
  // Users may specify either explicit versions offered by
  // Kubernetes Engine or version aliases, which have the following behavior:
  //
  // - "latest": picks the highest valid Kubernetes version
  // - "1.X": picks the highest valid patch+gke.N patch in the 1.X version
  // - "1.X.Y": picks the highest valid gke.N patch in the 1.X.Y version
  // - "1.X.Y-gke.N": picks an explicit Kubernetes version
  // - "-": picks the Kubernetes master version
  string desired_node_version = 4;

  // The monitoring service the cluster should use to write metrics.
  // Currently available options:
  //
  // * "monitoring.googleapis.com/kubernetes" - the Google Cloud Monitoring
  // service with Kubernetes-native resource model in Stackdriver
  // * "monitoring.googleapis.com" - the Google Cloud Monitoring service
  // * "none" - no metrics will be exported from the cluster
  string desired_monitoring_service = 5;

  // Configurations for the various addons available to run in the cluster.
  AddonsConfig desired_addons_config = 6;

  // The node pool to be upgraded. This field is mandatory if
  // "desired_node_version", "desired_image_family" or
  // "desired_node_pool_autoscaling" is specified and there is more than one
  // node pool on the cluster.
  string desired_node_pool_id = 7;

  // The desired image type for the node pool.
  // NOTE: Set the "desired_node_pool" field as well.
  string desired_image_type = 8;

  // Autoscaler configuration for the node pool specified in
  // desired_node_pool_id. If there is only one pool in the
  // cluster and desired_node_pool_id is not provided then
  // the change applies to that single node pool.
  NodePoolAutoscaling desired_node_pool_autoscaling = 9;

  // The desired list of Google Compute Engine
  // [zones](/compute/docs/zones#available) in which the cluster's nodes
  // should be located. Changing the locations a cluster is in will result
  // in nodes being either created or removed from the cluster, depending on
  // whether locations are being added or removed.
  //
  // This list must always include the cluster's primary zone.
  repeated string desired_locations = 10;

  // The desired configuration options for master authorized networks feature.
  MasterAuthorizedNetworksConfig desired_master_authorized_networks_config = 12;

  // The desired configuration options for the PodSecurityPolicy feature.
  PodSecurityPolicyConfig desired_pod_security_policy_config = 14;

  // Cluster-level autoscaling configuration.
  ClusterAutoscaling desired_cluster_autoscaling = 15;

  // The desired configuration options for the Binary Authorization feature.
  BinaryAuthorization desired_binary_authorization = 16;

  // The logging service the cluster should use to write metrics.
  // Currently available options:
  //
  // * "logging.googleapis.com/kubernetes" - the Google Cloud Logging
  // service with Kubernetes-native resource model in Stackdriver
  // * "logging.googleapis.com" - the Google Cloud Logging service
  // * "none" - no logs will be exported from the cluster
  string desired_logging_service = 19;

  // The desired configuration for exporting resource usage.
  ResourceUsageExportConfig desired_resource_usage_export_config = 21;

  // Cluster-level Vertical Pod Autoscaling configuration.
  VerticalPodAutoscaling desired_vertical_pod_autoscaling = 22;

  // The Kubernetes version to change the master to. The only valid value is the
  // latest supported version.
  //
  // Users may specify either explicit versions offered by
  // Kubernetes Engine or version aliases, which have the following behavior:
  //
  // - "latest": picks the highest valid Kubernetes version
  // - "1.X": picks the highest valid patch+gke.N patch in the 1.X version
  // - "1.X.Y": picks the highest valid gke.N patch in the 1.X.Y version
  // - "1.X.Y-gke.N": picks an explicit Kubernetes version
  // - "-": picks the default Kubernetes version
  string desired_master_version = 100;
}

// This operation resource represents operations that may have happened or are
// happening on the cluster. All fields are output only.
message Operation {
  // Current status of the operation.
  enum Status {
    // Not set.
    STATUS_UNSPECIFIED = 0;

    // The operation has been created.
    PENDING = 1;

    // The operation is currently running.
    RUNNING = 2;

    // The operation is done, either cancelled or completed.
    DONE = 3;

    // The operation is aborting.
    ABORTING = 4;
  }

  // Operation type.
  enum Type {
    // Not set.
    TYPE_UNSPECIFIED = 0;

    // Cluster create.
    CREATE_CLUSTER = 1;

    // Cluster delete.
    DELETE_CLUSTER = 2;

    // A master upgrade.
    UPGRADE_MASTER = 3;

    // A node upgrade.
    UPGRADE_NODES = 4;

    // Cluster repair.
    REPAIR_CLUSTER = 5;

    // Cluster update.
    UPDATE_CLUSTER = 6;

    // Node pool create.
    CREATE_NODE_POOL = 7;

    // Node pool delete.
    DELETE_NODE_POOL = 8;

    // Set node pool management.
    SET_NODE_POOL_MANAGEMENT = 9;

    // Automatic node pool repair.
    AUTO_REPAIR_NODES = 10;

    // Automatic node upgrade.
    AUTO_UPGRADE_NODES = 11;

    // Set labels.
    SET_LABELS = 12;

    // Set/generate master auth materials
    SET_MASTER_AUTH = 13;

    // Set node pool size.
    SET_NODE_POOL_SIZE = 14;

    // Updates network policy for a cluster.
    SET_NETWORK_POLICY = 15;

    // Set the maintenance policy.
    SET_MAINTENANCE_POLICY = 16;
  }

  // The server-assigned ID for the operation.
  string name = 1;

  // The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the operation
  // is taking place.
  // This field is deprecated, use location instead.
  string zone = 2 [deprecated = true];

  // The operation type.
  Type operation_type = 3;

  // The current status of the operation.
  Status status = 4;

  // Detailed operation progress, if available.
  string detail = 8;

  // If an error has occurred, a textual description of the error.
  string status_message = 5;

  // Server-defined URL for the resource.
  string self_link = 6;

  // Server-defined URL for the target of the operation.
  string target_link = 7;

  // [Output only] The name of the Google Compute Engine
  // [zone](/compute/docs/regions-zones/regions-zones#available) or
  // [region](/compute/docs/regions-zones/regions-zones#available) in which
  // the cluster resides.
  string location = 9;

  // [Output only] The time the operation started, in
  // [RFC3339](https://www.ietf.org/rfc/rfc3339.txt) text format.
  string start_time = 10;

  // [Output only] The time the operation completed, in
  // [RFC3339](https://www.ietf.org/rfc/rfc3339.txt) text format.
  string end_time = 11;

  // [Output only] Progress information for an operation.
  OperationProgress progress = 12;

  // Which conditions caused the current cluster state.
  repeated StatusCondition cluster_conditions = 13;

  // Which conditions caused the current node pool state.
  repeated StatusCondition nodepool_conditions = 14;
}

// Information about operation (or operation stage) progress.
message OperationProgress {
  // Progress metric is (string, int|float|string) pair.
  message Metric {
    // Metric name, required.
    // e.g., "nodes total", "percent done"
    string name = 1;

    // Strictly one of the values is required.
    oneof value {
      // For metrics with integer value.
      int64 int_value = 2;

      // For metrics with floating point value.
      double double_value = 3;

      // For metrics with custom values (ratios, visual progress, etc.).
      string string_value = 4;
    }
  }

  // A non-parameterized string describing an operation stage.
  // Unset for single-stage operations.
  string name = 1;

  // Status of an operation stage.
  // Unset for single-stage operations.
  Operation.Status status = 2;

  // Progress metric bundle, for example:
  //   metrics: [{name: "nodes done",     int_value: 15},
  //             {name: "nodes total",    int_value: 32}]
  // or
  //   metrics: [{name: "progress",       double_value: 0.56},
  //             {name: "progress scale", double_value: 1.0}]
  repeated Metric metrics = 3;

  // Substages of an operation or a stage.
  repeated OperationProgress stages = 4;
}

// CreateClusterRequest creates a cluster.
message CreateClusterRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the parent field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the parent field.
  string zone = 2 [deprecated = true];

  // A [cluster
  // resource](/container-engine/reference/rest/v1beta1/projects.zones.clusters)
  Cluster cluster = 3;

  // The parent (project and location) where the cluster will be created.
  // Specified in the format 'projects/*/locations/*'.
  string parent = 5;
}

// GetClusterRequest gets the settings of a cluster.
message GetClusterRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to retrieve.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // The name (project, location, cluster) of the cluster to retrieve.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 5;
}

// UpdateClusterRequest updates the settings of a cluster.
message UpdateClusterRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to upgrade.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // A description of the update.
  ClusterUpdate update = 4;

  // The name (project, location, cluster) of the cluster to update.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 5;
}

// SetNodePoolVersionRequest updates the version of a node pool.
message UpdateNodePoolRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to upgrade.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // Deprecated. The name of the node pool to upgrade.
  // This field has been deprecated and replaced by the name field.
  string node_pool_id = 4 [deprecated = true];

  // The Kubernetes version to change the nodes to (typically an
  // upgrade).
  //
  // Users may specify either explicit versions offered by Kubernetes Engine or
  // version aliases, which have the following behavior:
  //
  // - "latest": picks the highest valid Kubernetes version
  // - "1.X": picks the highest valid patch+gke.N patch in the 1.X version
  // - "1.X.Y": picks the highest valid gke.N patch in the 1.X.Y version
  // - "1.X.Y-gke.N": picks an explicit Kubernetes version
  // - "-": picks the Kubernetes master version
  string node_version = 5;

  // The desired image type for the node pool.
  string image_type = 6;

  // The name (project, location, cluster, node pool) of the node pool to
  // update. Specified in the format
  // 'projects/*/locations/*/clusters/*/nodePools/*'.
  string name = 8;
}

// SetNodePoolAutoscalingRequest sets the autoscaler settings of a node pool.
message SetNodePoolAutoscalingRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to upgrade.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // Deprecated. The name of the node pool to upgrade.
  // This field has been deprecated and replaced by the name field.
  string node_pool_id = 4 [deprecated = true];

  // Autoscaling configuration for the node pool.
  NodePoolAutoscaling autoscaling = 5;

  // The name (project, location, cluster, node pool) of the node pool to set
  // autoscaler settings. Specified in the format
  // 'projects/*/locations/*/clusters/*/nodePools/*'.
  string name = 6;
}

// SetLoggingServiceRequest sets the logging service of a cluster.
message SetLoggingServiceRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2;

  // Deprecated. The name of the cluster to upgrade.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // The logging service the cluster should use to write metrics.
  // Currently available options:
  //
  // * "logging.googleapis.com" - the Google Cloud Logging service
  // * "none" - no metrics will be exported from the cluster
  string logging_service = 4;

  // The name (project, location, cluster) of the cluster to set logging.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 5;
}

// SetMonitoringServiceRequest sets the monitoring service of a cluster.
message SetMonitoringServiceRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to upgrade.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // The monitoring service the cluster should use to write metrics.
  // Currently available options:
  //
  // * "monitoring.googleapis.com" - the Google Cloud Monitoring service
  // * "none" - no metrics will be exported from the cluster
  string monitoring_service = 4;

  // The name (project, location, cluster) of the cluster to set monitoring.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 6;
}

// SetAddonsRequest sets the addons associated with the cluster.
message SetAddonsConfigRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to upgrade.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // The desired configurations for the various addons available to run in the
  // cluster.
  AddonsConfig addons_config = 4;

  // The name (project, location, cluster) of the cluster to set addons.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 6;
}

// SetLocationsRequest sets the locations of the cluster.
message SetLocationsRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to upgrade.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // The desired list of Google Compute Engine
  // [zones](/compute/docs/zones#available) in which the cluster's nodes
  // should be located. Changing the locations a cluster is in will result
  // in nodes being either created or removed from the cluster, depending on
  // whether locations are being added or removed.
  //
  // This list must always include the cluster's primary zone.
  repeated string locations = 4;

  // The name (project, location, cluster) of the cluster to set locations.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 6;
}

// UpdateMasterRequest updates the master of the cluster.
message UpdateMasterRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to upgrade.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // The Kubernetes version to change the master to.
  //
  // Users may specify either explicit versions offered by
  // Kubernetes Engine or version aliases, which have the following behavior:
  //
  // - "latest": picks the highest valid Kubernetes version
  // - "1.X": picks the highest valid patch+gke.N patch in the 1.X version
  // - "1.X.Y": picks the highest valid gke.N patch in the 1.X.Y version
  // - "1.X.Y-gke.N": picks an explicit Kubernetes version
  // - "-": picks the default Kubernetes version
  string master_version = 4;

  // The name (project, location, cluster) of the cluster to update.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 7;
}

// SetMasterAuthRequest updates the admin password of a cluster.
message SetMasterAuthRequest {
  // Operation type: what type update to perform.
  enum Action {
    // Operation is unknown and will error out.
    UNKNOWN = 0;

    // Set the password to a user generated value.
    SET_PASSWORD = 1;

    // Generate a new password and set it to that.
    GENERATE_PASSWORD = 2;

    // Set the username.  If an empty username is provided, basic authentication
    // is disabled for the cluster.  If a non-empty username is provided, basic
    // authentication is enabled, with either a provided password or a generated
    // one.
    SET_USERNAME = 3;
  }

  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to upgrade.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // The exact form of action to be taken on the master auth.
  Action action = 4;

  // A description of the update.
  MasterAuth update = 5;

  // The name (project, location, cluster) of the cluster to set auth.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 7;
}

// DeleteClusterRequest deletes a cluster.
message DeleteClusterRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to delete.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // The name (project, location, cluster) of the cluster to delete.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 4;
}

// ListClustersRequest lists clusters.
message ListClustersRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the parent field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides, or "-" for all zones.
  // This field has been deprecated and replaced by the parent field.
  string zone = 2 [deprecated = true];

  // The parent (project and location) where the clusters will be listed.
  // Specified in the format 'projects/*/locations/*'.
  // Location "-" matches all zones and all regions.
  string parent = 4;
}

// ListClustersResponse is the result of ListClustersRequest.
message ListClustersResponse {
  // A list of clusters in the project in the specified zone, or
  // across all ones.
  repeated Cluster clusters = 1;

  // If any zones are listed here, the list of clusters returned
  // may be missing those zones.
  repeated string missing_zones = 2;
}

// GetOperationRequest gets a single operation.
message GetOperationRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The server-assigned `name` of the operation.
  // This field has been deprecated and replaced by the name field.
  string operation_id = 3 [deprecated = true];

  // The name (project, location, operation id) of the operation to get.
  // Specified in the format 'projects/*/locations/*/operations/*'.
  string name = 5;
}

// ListOperationsRequest lists operations.
message ListOperationsRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the parent field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) to return operations for, or `-` for
  // all zones. This field has been deprecated and replaced by the parent field.
  string zone = 2 [deprecated = true];

  // The parent (project and location) where the operations will be listed.
  // Specified in the format 'projects/*/locations/*'.
  // Location "-" matches all zones and all regions.
  string parent = 4;
}

// CancelOperationRequest cancels a single operation.
message CancelOperationRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the operation resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The server-assigned `name` of the operation.
  // This field has been deprecated and replaced by the name field.
  string operation_id = 3 [deprecated = true];

  // The name (project, location, operation id) of the operation to cancel.
  // Specified in the format 'projects/*/locations/*/operations/*'.
  string name = 4;
}

// ListOperationsResponse is the result of ListOperationsRequest.
message ListOperationsResponse {
  // A list of operations in the project in the specified zone.
  repeated Operation operations = 1;

  // If any zones are listed here, the list of operations returned
  // may be missing the operations from those zones.
  repeated string missing_zones = 2;
}

// Gets the current Kubernetes Engine service configuration.
message GetServerConfigRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) to return operations for.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // The name (project and location) of the server config to get
  // Specified in the format 'projects/*/locations/*'.
  string name = 4;
}

// Kubernetes Engine service configuration.
message ServerConfig {
  // Version of Kubernetes the service deploys by default.
  string default_cluster_version = 1;

  // List of valid node upgrade target versions.
  repeated string valid_node_versions = 3;

  // Default image type.
  string default_image_type = 4;

  // List of valid image types.
  repeated string valid_image_types = 5;

  // List of valid master versions.
  repeated string valid_master_versions = 6;
}

// CreateNodePoolRequest creates a node pool for a cluster.
message CreateNodePoolRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://developers.google.com/console/help/new/#projectnumber).
  // This field has been deprecated and replaced by the parent field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the parent field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster.
  // This field has been deprecated and replaced by the parent field.
  string cluster_id = 3 [deprecated = true];

  // The node pool to create.
  NodePool node_pool = 4;

  // The parent (project, location, cluster id) where the node pool will be
  // created. Specified in the format
  // 'projects/*/locations/*/clusters/*'.
  string parent = 6;
}

// DeleteNodePoolRequest deletes a node pool for a cluster.
message DeleteNodePoolRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://developers.google.com/console/help/new/#projectnumber).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // Deprecated. The name of the node pool to delete.
  // This field has been deprecated and replaced by the name field.
  string node_pool_id = 4 [deprecated = true];

  // The name (project, location, cluster, node pool id) of the node pool to
  // delete. Specified in the format
  // 'projects/*/locations/*/clusters/*/nodePools/*'.
  string name = 6;
}

// ListNodePoolsRequest lists the node pool(s) for a cluster.
message ListNodePoolsRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://developers.google.com/console/help/new/#projectnumber).
  // This field has been deprecated and replaced by the parent field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the parent field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster.
  // This field has been deprecated and replaced by the parent field.
  string cluster_id = 3 [deprecated = true];

  // The parent (project, location, cluster id) where the node pools will be
  // listed. Specified in the format 'projects/*/locations/*/clusters/*'.
  string parent = 5;
}

// GetNodePoolRequest retrieves a node pool for a cluster.
message GetNodePoolRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://developers.google.com/console/help/new/#projectnumber).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // Deprecated. The name of the node pool.
  // This field has been deprecated and replaced by the name field.
  string node_pool_id = 4 [deprecated = true];

  // The name (project, location, cluster, node pool id) of the node pool to
  // get. Specified in the format
  // 'projects/*/locations/*/clusters/*/nodePools/*'.
  string name = 6;
}

// NodePool contains the name and configuration for a cluster's node pool.
// Node pools are a set of nodes (i.e. VM's), with a common configuration and
// specification, under the control of the cluster master. They may have a set
// of Kubernetes labels applied to them, which may be used to reference them
// during pod scheduling. They may also be resized up or down, to accommodate
// the workload.
message NodePool {
  // The current status of the node pool instance.
  enum Status {
    // Not set.
    STATUS_UNSPECIFIED = 0;

    // The PROVISIONING state indicates the node pool is being created.
    PROVISIONING = 1;

    // The RUNNING state indicates the node pool has been created
    // and is fully usable.
    RUNNING = 2;

    // The RUNNING_WITH_ERROR state indicates the node pool has been created
    // and is partially usable. Some error state has occurred and some
    // functionality may be impaired. Customer may need to reissue a request
    // or trigger a new update.
    RUNNING_WITH_ERROR = 3;

    // The RECONCILING state indicates that some work is actively being done on
    // the node pool, such as upgrading node software. Details can
    // be found in the `statusMessage` field.
    RECONCILING = 4;

    // The STOPPING state indicates the node pool is being deleted.
    STOPPING = 5;

    // The ERROR state indicates the node pool may be unusable. Details
    // can be found in the `statusMessage` field.
    ERROR = 6;
  }

  // The name of the node pool.
  string name = 1;

  // The node configuration of the pool.
  NodeConfig config = 2;

  // The initial node count for the pool. You must ensure that your
  // Compute Engine <a href="/compute/docs/resource-quotas">resource quota</a>
  // is sufficient for this number of instances. You must also have available
  // firewall and routes quota.
  int32 initial_node_count = 3;

  // [Output only] Server-defined URL for the resource.
  string self_link = 100;

  // The version of the Kubernetes of this node.
  string version = 101;

  // [Output only] The resource URLs of the [managed instance
  // groups](/compute/docs/instance-groups/creating-groups-of-managed-instances)
  // associated with this node pool.
  repeated string instance_group_urls = 102;

  // [Output only] The status of the nodes in this pool instance.
  Status status = 103;

  // [Output only] Additional information about the current status of this
  // node pool instance, if available.
  string status_message = 104;

  // Autoscaler configuration for this NodePool. Autoscaler is enabled
  // only if a valid configuration is present.
  NodePoolAutoscaling autoscaling = 4;

  // NodeManagement configuration for this NodePool.
  NodeManagement management = 5;

  // The constraint on the maximum number of pods that can be run
  // simultaneously on a node in the node pool.
  MaxPodsConstraint max_pods_constraint = 6;

  // Which conditions caused the current node pool state.
  repeated StatusCondition conditions = 105;
}

// NodeManagement defines the set of node management services turned on for the
// node pool.
message NodeManagement {
  // Whether the nodes will be automatically upgraded.
  bool auto_upgrade = 1;

  // Whether the nodes will be automatically repaired.
  bool auto_repair = 2;

  // Specifies the Auto Upgrade knobs for the node pool.
  AutoUpgradeOptions upgrade_options = 10;
}

// AutoUpgradeOptions defines the set of options for the user to control how
// the Auto Upgrades will proceed.
message AutoUpgradeOptions {
  // [Output only] This field is set when upgrades are about to commence
  // with the approximate start time for the upgrades, in
  // [RFC3339](https://www.ietf.org/rfc/rfc3339.txt) text format.
  string auto_upgrade_start_time = 1;

  // [Output only] This field is set when upgrades are about to commence
  // with the description of the upgrade.
  string description = 2;
}

// MaintenancePolicy defines the maintenance policy to be used for the cluster.
message MaintenancePolicy {
  // Specifies the maintenance window in which maintenance may be performed.
  MaintenanceWindow window = 1;
}

// MaintenanceWindow defines the maintenance window to be used for the cluster.
message MaintenanceWindow {
  // Unimplemented, reserved for future use.
  // HourlyMaintenanceWindow hourly_maintenance_window = 1;
  oneof policy {
    // DailyMaintenanceWindow specifies a daily maintenance operation window.
    DailyMaintenanceWindow daily_maintenance_window = 2;
  }
}

// Time window specified for daily maintenance operations.
message DailyMaintenanceWindow {
  // Time within the maintenance window to start the maintenance operations.
  // It must be in format "HH:MM”, where HH : [00-23] and MM : [00-59] GMT.
  string start_time = 2;

  // [Output only] Duration of the time window, automatically chosen to be
  // smallest possible in the given scenario.
  string duration = 3;
}

// SetNodePoolManagementRequest sets the node management properties of a node
// pool.
message SetNodePoolManagementRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to update.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // Deprecated. The name of the node pool to update.
  // This field has been deprecated and replaced by the name field.
  string node_pool_id = 4 [deprecated = true];

  // NodeManagement configuration for the node pool.
  NodeManagement management = 5;

  // The name (project, location, cluster, node pool id) of the node pool to set
  // management properties. Specified in the format
  // 'projects/*/locations/*/clusters/*/nodePools/*'.
  string name = 7;
}

// SetNodePoolSizeRequest sets the size a node
// pool.
message SetNodePoolSizeRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to update.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // Deprecated. The name of the node pool to update.
  // This field has been deprecated and replaced by the name field.
  string node_pool_id = 4 [deprecated = true];

  // The desired node count for the pool.
  int32 node_count = 5;

  // The name (project, location, cluster, node pool id) of the node pool to set
  // size.
  // Specified in the format 'projects/*/locations/*/clusters/*/nodePools/*'.
  string name = 7;
}

// RollbackNodePoolUpgradeRequest rollbacks the previously Aborted or Failed
// NodePool upgrade. This will be an no-op if the last upgrade successfully
// completed.
message RollbackNodePoolUpgradeRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to rollback.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // Deprecated. The name of the node pool to rollback.
  // This field has been deprecated and replaced by the name field.
  string node_pool_id = 4 [deprecated = true];

  // The name (project, location, cluster, node pool id) of the node poll to
  // rollback upgrade.
  // Specified in the format 'projects/*/locations/*/clusters/*/nodePools/*'.
  string name = 6;
}

// ListNodePoolsResponse is the result of ListNodePoolsRequest.
message ListNodePoolsResponse {
  // A list of node pools for a cluster.
  repeated NodePool node_pools = 1;
}

// ClusterAutoscaling contains global, per-cluster information
// required by Cluster Autoscaler to automatically adjust
// the size of the cluster and create/delete
// node pools based on the current needs.
message ClusterAutoscaling {
  // Enables automatic node pool creation and deletion.
  bool enable_node_autoprovisioning = 1;

  // Contains global constraints regarding minimum and maximum
  // amount of resources in the cluster.
  repeated ResourceLimit resource_limits = 2;
}

// Contains information about amount of some resource in the cluster.
// For memory, value should be in GB.
message ResourceLimit {
  // Resource name "cpu", "memory" or gpu-specific string.
  string resource_type = 1;

  // Minimum amount of the resource in the cluster.
  int64 minimum = 2;

  // Maximum amount of the resource in the cluster.
  int64 maximum = 3;
}

// NodePoolAutoscaling contains information required by cluster autoscaler to
// adjust the size of the node pool to the current cluster usage.
message NodePoolAutoscaling {
  // Is autoscaling enabled for this node pool.
  bool enabled = 1;

  // Minimum number of nodes in the NodePool. Must be >= 1 and <=
  // max_node_count.
  int32 min_node_count = 2;

  // Maximum number of nodes in the NodePool. Must be >= min_node_count. There
  // has to enough quota to scale up the cluster.
  int32 max_node_count = 3;

  // Can this node pool be deleted automatically.
  bool autoprovisioned = 4;
}

// SetLabelsRequest sets the Google Cloud Platform labels on a Google Container
// Engine cluster, which will in turn set them for Google Compute Engine
// resources used by that cluster
message SetLabelsRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://developers.google.com/console/help/new/#projectnumber).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // The labels to set for that cluster.
  map<string, string> resource_labels = 4;

  // The fingerprint of the previous set of labels for this resource,
  // used to detect conflicts. The fingerprint is initially generated by
  // Kubernetes Engine and changes after every request to modify or update
  // labels. You must always provide an up-to-date fingerprint hash when
  // updating or changing labels. Make a <code>get()</code> request to the
  // resource to get the latest fingerprint.
  string label_fingerprint = 5;

  // The name (project, location, cluster id) of the cluster to set labels.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 7;
}

// SetLegacyAbacRequest enables or disables the ABAC authorization mechanism for
// a cluster.
message SetLegacyAbacRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster to update.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // Whether ABAC authorization will be enabled in the cluster.
  bool enabled = 4;

  // The name (project, location, cluster id) of the cluster to set legacy abac.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 6;
}

// StartIPRotationRequest creates a new IP for the cluster and then performs
// a node upgrade on each node pool to point to the new IP.
message StartIPRotationRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://developers.google.com/console/help/new/#projectnumber).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // The name (project, location, cluster id) of the cluster to start IP
  // rotation. Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 6;

  // Whether to rotate credentials during IP rotation.
  bool rotate_credentials = 7;
}

// CompleteIPRotationRequest moves the cluster master back into single-IP mode.
message CompleteIPRotationRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://developers.google.com/console/help/new/#projectnumber).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // The name (project, location, cluster id) of the cluster to complete IP
  // rotation. Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 7;
}

// AcceleratorConfig represents a Hardware Accelerator request.
message AcceleratorConfig {
  // The number of the accelerator cards exposed to an instance.
  int64 accelerator_count = 1;

  // The accelerator type resource name. List of supported accelerators
  // [here](/compute/docs/gpus/#Introduction)
  string accelerator_type = 2;
}

// WorkloadMetadataConfig defines the metadata configuration to expose to
// workloads on the node pool.
message WorkloadMetadataConfig {
  // NodeMetadata is the configuration for if and how to expose the node
  // metadata to the workload running on the node.
  enum NodeMetadata {
    // Not set.
    UNSPECIFIED = 0;

    // Prevent workloads not in hostNetwork from accessing certain VM metadata,
    // specifically kube-env, which contains Kubelet credentials, and the
    // instance identity token.
    //
    // Metadata concealment is a temporary security solution available while the
    // bootstrapping process for cluster nodes is being redesigned with
    // significant security improvements.  This feature is scheduled to be
    // deprecated in the future and later removed.
    SECURE = 1;

    // Expose all VM metadata to pods.
    EXPOSE = 2;
  }

  // NodeMetadata is the configuration for how to expose the node metadata to
  // the workload running on the node.
  NodeMetadata node_metadata = 1;
}

// SetNetworkPolicyRequest enables/disables network policy for a cluster.
message SetNetworkPolicyRequest {
  // Deprecated. The Google Developers Console [project ID or project
  // number](https://developers.google.com/console/help/new/#projectnumber).
  // This field has been deprecated and replaced by the name field.
  string project_id = 1 [deprecated = true];

  // Deprecated. The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  // This field has been deprecated and replaced by the name field.
  string zone = 2 [deprecated = true];

  // Deprecated. The name of the cluster.
  // This field has been deprecated and replaced by the name field.
  string cluster_id = 3 [deprecated = true];

  // Configuration options for the NetworkPolicy feature.
  NetworkPolicy network_policy = 4;

  // The name (project, location, cluster id) of the cluster to set networking
  // policy. Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 6;
}

// SetMaintenancePolicyRequest sets the maintenance policy for a cluster.
message SetMaintenancePolicyRequest {
  // The Google Developers Console [project ID or project
  // number](https://support.google.com/cloud/answer/6158840).
  string project_id = 1;

  // The name of the Google Compute Engine
  // [zone](/compute/docs/zones#available) in which the cluster
  // resides.
  string zone = 2;

  // The name of the cluster to update.
  string cluster_id = 3;

  // The maintenance policy to be set for the cluster. An empty field
  // clears the existing maintenance policy.
  MaintenancePolicy maintenance_policy = 4;

  // The name (project, location, cluster id) of the cluster to set maintenance
  // policy.
  // Specified in the format 'projects/*/locations/*/clusters/*'.
  string name = 5;
}

// ListLocationsRequest is used to request the locations that offer GKE.
message ListLocationsRequest {
  // Contains the name of the resource requested.
  // Specified in the format 'projects/*'.
  string parent = 1;
}

// ListLocationsResponse returns the list of all GKE locations and their
// recommendation state.
message ListLocationsResponse {
  // A full list of GKE locations.
  repeated Location locations = 1;

  // Only return ListLocationsResponse that occur after the page_token. This
  // value should be populated from the ListLocationsResponse.next_page_token if
  // that response token was set (which happens when listing more Locations than
  // fit in a single ListLocationsResponse).
  string next_page_token = 2;
}

// Location returns the location name, and if the location is recommended
// for GKE cluster scheduling.
message Location {
  // LocationType is the type of GKE location, regional or zonal.
  enum LocationType {
    // LOCATION_TYPE_UNSPECIFIED means the location type was not determined.
    LOCATION_TYPE_UNSPECIFIED = 0;

    // A GKE Location where Zonal clusters can be created.
    ZONE = 1;

    // A GKE Location where Regional clusters can be created.
    REGION = 2;
  }

  // Contains the type of location this Location is for.
  // Regional or Zonal.
  LocationType type = 1;

  // Contains the name of the resource requested.
  // Specified in the format 'projects/*/locations/*'.
  string name = 2;

  // Whether the location is recomended for GKE cluster scheduling.
  bool recommended = 3;
}

// StatusCondition describes why a cluster or a node pool has a certain status
// (e.g., ERROR or DEGRADED).
message StatusCondition {
  // Code for each condition
  enum Code {
    // UNKNOWN indicates a generic condition.
    UNKNOWN = 0;

    // GCE_STOCKOUT indicates a Google Compute Engine stockout.
    GCE_STOCKOUT = 1;

    // GKE_SERVICE_ACCOUNT_DELETED indicates that the user deleted their robot
    // service account.
    GKE_SERVICE_ACCOUNT_DELETED = 2;

    // Google Compute Engine quota was exceeded.
    GCE_QUOTA_EXCEEDED = 3;

    // Cluster state was manually changed by an SRE due to a system logic error.
    // More codes TBA
    SET_BY_OPERATOR = 4;
  }

  // Machine-friendly representation of the condition
  Code code = 1;

  // Human-friendly representation of the condition
  string message = 2;
}

// NetworkConfig reports the relative names of network & subnetwork.
message NetworkConfig {
  // Output only. The relative name of the Google Compute Engine
  // [network][google.container.v1beta1.NetworkConfig.network](/compute/docs/networks-and-firewalls#networks) to which
  // the cluster is connected.
  // Example: projects/my-project/global/networks/my-network
  string network = 1;

  // Output only. The relative name of the Google Compute Engine
  // [subnetwork](/compute/docs/vpc) to which the cluster is connected.
  // Example: projects/my-project/regions/us-central1/subnetworks/my-subnet
  string subnetwork = 2;
}

// ListUsableSubnetworksRequest requests the list of usable subnetworks.
// available to a user for creating clusters.
message ListUsableSubnetworksRequest {
  // The parent project where subnetworks are usable.
  // Specified in the format 'projects/*'.
  string parent = 1;

  // Filtering currently only supports equality on the networkProjectId and must
  // be in the form: "networkProjectId=[PROJECTID]", where `networkProjectId`
  // is the project which owns the listed subnetworks. This defaults to the
  // parent project ID.
  string filter = 2;

  // The max number of results per page that should be returned. If the number
  // of available results is larger than `page_size`, a `next_page_token` is
  // returned which can be used to get the next page of results in subsequent
  // requests. Acceptable values are 0 to 500, inclusive. (Default: 500)
  int32 page_size = 3;

  // Specifies a page token to use. Set this to the nextPageToken returned by
  // previous list requests to get the next page of results.
  string page_token = 4;
}

// ListUsableSubnetworksResponse is the response of
// ListUsableSubnetworksRequest.
message ListUsableSubnetworksResponse {
  // A list of usable subnetworks in the specified network project.
  repeated UsableSubnetwork subnetworks = 1;

  // This token allows you to get the next page of results for list requests.
  // If the number of results is larger than `page_size`, use the
  // `next_page_token` as a value for the query parameter `page_token` in the
  // next request. The value will become empty when there are no more pages.
  string next_page_token = 2;
}

// Secondary IP range of a usable subnetwork.
message UsableSubnetworkSecondaryRange {
  // Status shows the current usage of a secondary IP range.
  enum Status {
    // UNKNOWN is the zero value of the Status enum. It's not a valid status.
    UNKNOWN = 0;

    // UNUSED denotes that this range is unclaimed by any cluster.
    UNUSED = 1;

    // IN_USE_SERVICE denotes that this range is claimed by a cluster for
    // services. It cannot be used for other clusters.
    IN_USE_SERVICE = 2;

    // IN_USE_SHAREABLE_POD denotes this range was created by the network admin
    // and is currently claimed by a cluster for pods. It can only be used by
    // other clusters as a pod range.
    IN_USE_SHAREABLE_POD = 3;

    // IN_USE_MANAGED_POD denotes this range was created by GKE and is claimed
    // for pods. It cannot be used for other clusters.
    IN_USE_MANAGED_POD = 4;
  }

  // The name associated with this subnetwork secondary range, used when adding
  // an alias IP range to a VM instance.
  string range_name = 1;

  // The range of IP addresses belonging to this subnetwork secondary range.
  string ip_cidr_range = 2;

  // This field is to determine the status of the secondary range programmably.
  Status status = 3;
}

// UsableSubnetwork resource returns the subnetwork name, its associated network
// and the primary CIDR range.
message UsableSubnetwork {
  // Subnetwork Name.
  // Example: projects/my-project/regions/us-central1/subnetworks/my-subnet
  string subnetwork = 1;

  // Network Name.
  // Example: projects/my-project/global/networks/my-network
  string network = 2;

  // The range of internal addresses that are owned by this subnetwork.
  string ip_cidr_range = 3;

  // Secondary IP ranges.
  repeated UsableSubnetworkSecondaryRange secondary_ip_ranges = 4;

  // A human readable status message representing the reasons for cases where
  // the caller cannot use the secondary ranges under the subnet. For example if
  // the secondary_ip_ranges is empty due to a permission issue, an insufficient
  // permission message will be given by status_message.
  string status_message = 5;
}

// VerticalPodAutoscaling contains global, per-cluster information
// required by Vertical Pod Autoscaler to automatically adjust
// the resources of pods controlled by it.
message VerticalPodAutoscaling {
  // Enables vertical pod autoscaling.
  bool enabled = 1;
}

// Constraints applied to pods.
message MaxPodsConstraint {
  // Constraint enforced on the max num of pods per node.
  int64 max_pods_per_node = 1;
}

// Configuration for exporting cluster resource usages.
message ResourceUsageExportConfig {
  // Parameters for using BigQuery as the destination of resource usage export.
  message BigQueryDestination {
    // The ID of a BigQuery Dataset.
    string dataset_id = 1;
  }

  // Configuration to use BigQuery as usage export destination.
  BigQueryDestination bigquery_destination = 1;

  // Whether to enable network egress metering for this cluster. If enabled, a
  // daemonset will be created in the cluster to meter network egress traffic.
  bool enable_network_egress_metering = 2;
}