// Copyright 2021 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.cloud.filestore.v1beta1;

import "google/api/annotations.proto";
import "google/api/client.proto";
import "google/api/field_behavior.proto";
import "google/api/resource.proto";
import "google/longrunning/operations.proto";
import "google/protobuf/field_mask.proto";
import "google/protobuf/timestamp.proto";
import "google/protobuf/wrappers.proto";

option csharp_namespace = "Google.Cloud.Filestore.V1Beta1";
option go_package = "google.golang.org/genproto/googleapis/cloud/filestore/v1beta1;filestore";
option java_multiple_files = true;
option java_outer_classname = "CloudFilestoreServiceProto";
option java_package = "com.google.cloud.filestore.v1beta1";
option php_namespace = "Google\\Cloud\\Filestore\\V1beta1";

option (google.api.resource_definition) = {
  type: "file.googleapis.com/Snapshot"
  pattern: "projects/{project}/locations/{location}/snapshots/{snapshot}"
};

// Configures and manages Cloud Filestore resources.
//
// Cloud Filestore Manager v1beta1.
//
// The `file.googleapis.com` service implements the Cloud Filestore API and
// defines the following model for managing resources:
// * The service works with a collection of cloud projects, named: `/projects/*`
// * Each project has a collection of available locations, named: `/locations/*`
// * Each location has a collection of instances and backups, named:
// `/instances/*` and `/backups/*` respectively.
// * As such, Cloud Filestore instances are resources of the form:
//   `/projects/{project_id}/locations/{location_id}/instances/{instance_id}`
//   backups are resources of the form:
//   `/projects/{project_id}/locations/{location_id}/backup/{backup_id}`
//
// Note that location_id can represent a GCP `zone` or `region` depending on the
// resource.
// for example:
// A zonal Filestore instance:
// * `projects/my-project/locations/us-central1-c/instances/my-basic-tier-filer`
// A regional Filestore instance:
// * `projects/my-project/locations/us-central1/instances/my-enterprise-filer`
service CloudFilestoreManager {
  option (google.api.default_host) = "file.googleapis.com";
  option (google.api.oauth_scopes) = "https://www.googleapis.com/auth/cloud-platform";

  // Lists all instances in a project for either a specified location
  // or for all locations.
  rpc ListInstances(ListInstancesRequest) returns (ListInstancesResponse) {
    option (google.api.http) = {
      get: "/v1beta1/{parent=projects/*/locations/*}/instances"
    };
    option (google.api.method_signature) = "parent";
  }

  // Gets the details of a specific instance.
  rpc GetInstance(GetInstanceRequest) returns (Instance) {
    option (google.api.http) = {
      get: "/v1beta1/{name=projects/*/locations/*/instances/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Creates an instance.
  // When creating from a backup, the capacity of the new instance needs to be
  // equal to or larger than the capacity of the backup (and also equal to or
  // larger than the minimum capacity of the tier).
  rpc CreateInstance(CreateInstanceRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{parent=projects/*/locations/*}/instances"
      body: "instance"
    };
    option (google.api.method_signature) = "parent,instance,instance_id";
    option (google.longrunning.operation_info) = {
      response_type: "Instance"
      metadata_type: "google.cloud.common.OperationMetadata"
    };
  }

  // Updates the settings of a specific instance.
  rpc UpdateInstance(UpdateInstanceRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      patch: "/v1beta1/{instance.name=projects/*/locations/*/instances/*}"
      body: "instance"
    };
    option (google.api.method_signature) = "instance,update_mask";
    option (google.longrunning.operation_info) = {
      response_type: "Instance"
      metadata_type: "google.cloud.common.OperationMetadata"
    };
  }

  // Restores an existing instance's file share from a backup.
  //
  // The capacity of the instance needs to be equal to or larger than the
  // capacity of the backup (and also equal to or larger than the minimum
  // capacity of the tier).
  rpc RestoreInstance(RestoreInstanceRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/instances/*}:restore"
      body: "*"
    };
    option (google.longrunning.operation_info) = {
      response_type: "Instance"
      metadata_type: "google.cloud.common.OperationMetadata"
    };
  }

  // Deletes an instance.
  rpc DeleteInstance(DeleteInstanceRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      delete: "/v1beta1/{name=projects/*/locations/*/instances/*}"
    };
    option (google.api.method_signature) = "name";
    option (google.longrunning.operation_info) = {
      response_type: "google.protobuf.Empty"
      metadata_type: "google.cloud.common.OperationMetadata"
    };
  }

  // Lists all backups in a project for either a specified location or for all
  // locations.
  rpc ListBackups(ListBackupsRequest) returns (ListBackupsResponse) {
    option (google.api.http) = {
      get: "/v1beta1/{parent=projects/*/locations/*}/backups"
    };
    option (google.api.method_signature) = "parent";
  }

  // Gets the details of a specific backup.
  rpc GetBackup(GetBackupRequest) returns (Backup) {
    option (google.api.http) = {
      get: "/v1beta1/{name=projects/*/locations/*/backups/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Creates a backup.
  rpc CreateBackup(CreateBackupRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{parent=projects/*/locations/*}/backups"
      body: "backup"
    };
    option (google.api.method_signature) = "parent,backup,backup_id";
    option (google.longrunning.operation_info) = {
      response_type: "Backup"
      metadata_type: "google.cloud.common.OperationMetadata"
    };
  }

  // Deletes a backup.
  rpc DeleteBackup(DeleteBackupRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      delete: "/v1beta1/{name=projects/*/locations/*/backups/*}"
    };
    option (google.api.method_signature) = "name";
    option (google.longrunning.operation_info) = {
      response_type: "google.protobuf.Empty"
      metadata_type: "google.cloud.common.OperationMetadata"
    };
  }

  // Updates the settings of a specific backup.
  rpc UpdateBackup(UpdateBackupRequest) returns (google.longrunning.Operation) {
    option (google.api.http) = {
      patch: "/v1beta1/{backup.name=projects/*/locations/*/backups/*}"
      body: "backup"
    };
    option (google.api.method_signature) = "backup,update_mask";
    option (google.longrunning.operation_info) = {
      response_type: "Backup"
      metadata_type: "google.cloud.common.OperationMetadata"
    };
  }
}

// Network configuration for the instance.
message NetworkConfig {
  // Internet protocol versions supported by Cloud Filestore.
  enum AddressMode {
    // Internet protocol not set.
    ADDRESS_MODE_UNSPECIFIED = 0;

    // Use the IPv4 internet protocol.
    MODE_IPV4 = 1;
  }

  // The name of the Google Compute Engine
  // [VPC network](https://cloud.google.com/vpc/docs/vpc) to which the
  // instance is connected.
  string network = 1;

  // Internet protocol versions for which the instance has IP addresses
  // assigned. For this version, only MODE_IPV4 is supported.
  repeated AddressMode modes = 3;

  // A /29 CIDR block for Basic or a /23 CIDR block for High Scale in one of the
  // [internal IP address
  // ranges](https://www.arin.net/reference/research/statistics/address_filters/)
  // that identifies the range of IP addresses reserved for this instance. For
  // example, 10.0.0.0/29 or 192.168.0.0/23. The range you specify can't overlap
  // with either existing subnets or assigned IP address ranges for other Cloud
  // Filestore instances in the selected VPC network.
  string reserved_ip_range = 4;

  // Output only. IPv4 addresses in the format
  // `{octet1}.{octet2}.{octet3}.{octet4}` or IPv6 addresses in the format
  // `{block1}:{block2}:{block3}:{block4}:{block5}:{block6}:{block7}:{block8}`.
  repeated string ip_addresses = 5 [(google.api.field_behavior) = OUTPUT_ONLY];
}

// File share configuration for the instance.
message FileShareConfig {
  // The name of the file share (must be 16 characters or less).
  string name = 1;

  // File share capacity in gigabytes (GB).
  // Cloud Filestore defines 1 GB as 1024^3 bytes.
  int64 capacity_gb = 2;

  // The source that this file share has been restored from. Empty if the file
  // share is created from scratch.
  oneof source {
    // The resource name of the backup, in the format
    // `projects/{project_id}/locations/{location_id}/backups/{backup_id}`, that
    // this file share has been restored from.
    string source_backup = 9 [(google.api.resource_reference) = {
                                type: "file.googleapis.com/Backup"
                              }];
  }

  // Nfs Export Options.
  // There is a limit of 10 export options per file share.
  repeated NfsExportOptions nfs_export_options = 8;
}

// NFS export options specifications.
message NfsExportOptions {
  // The access mode.
  enum AccessMode {
    // AccessMode not set.
    ACCESS_MODE_UNSPECIFIED = 0;

    // The client can only read the file share.
    READ_ONLY = 1;

    // The client can read and write the file share (default).
    READ_WRITE = 2;
  }

  // The squash mode.
  enum SquashMode {
    // SquashMode not set.
    SQUASH_MODE_UNSPECIFIED = 0;

    // The Root user has root access to the file share (default).
    NO_ROOT_SQUASH = 1;

    // The Root user has squashed access to the anonymous uid/gid.
    ROOT_SQUASH = 2;
  }

  // List of either an IPv4 addresses in the format
  // `{octet1}.{octet2}.{octet3}.{octet4}` or CIDR ranges in the format
  // `{octet1}.{octet2}.{octet3}.{octet4}/{mask size}` which may mount the
  // file share.
  // Overlapping IP ranges are not allowed, both within and across
  // NfsExportOptions. An error will be returned.
  // The limit is 64 IP ranges/addresses for each FileShareConfig among all
  // NfsExportOptions.
  repeated string ip_ranges = 1;

  // Either READ_ONLY, for allowing only read requests on the exported
  // directory, or READ_WRITE, for allowing both read and write requests.
  // The default is READ_WRITE.
  AccessMode access_mode = 2;

  // Either NO_ROOT_SQUASH, for allowing root access on the exported directory,
  // or ROOT_SQUASH, for not allowing root access. The default is
  // NO_ROOT_SQUASH.
  SquashMode squash_mode = 3;

  // An integer representing the anonymous user id with a default value of
  // 65534.
  // Anon_uid may only be set with squash_mode of ROOT_SQUASH.  An error will be
  // returned if this field is specified for other squash_mode settings.
  int64 anon_uid = 4;

  // An integer representing the anonymous group id with a default value of
  // 65534.
  // Anon_gid may only be set with squash_mode of ROOT_SQUASH.  An error will be
  // returned if this field is specified for other squash_mode settings.
  int64 anon_gid = 5;
}

// A Cloud Filestore instance.
message Instance {
  option (google.api.resource) = {
    type: "file.googleapis.com/Instance"
    pattern: "projects/{project}/locations/{location}/instances/{instance}"
  };

  // The instance state.
  enum State {
    // State not set.
    STATE_UNSPECIFIED = 0;

    // The instance is being created.
    CREATING = 1;

    // The instance is available for use.
    READY = 2;

    // Work is being done on the instance. You can get further details from the
    // `statusMessage` field of the `Instance` resource.
    REPAIRING = 3;

    // The instance is shutting down.
    DELETING = 4;

    // The instance is experiencing an issue and might be unusable. You can get
    // further details from the `statusMessage` field of the `Instance`
    // resource.
    ERROR = 6;

    // The instance is restoring a snapshot or backup to an existing file share
    // and may be unusable during this time.
    RESTORING = 7;
  }

  // Available service tiers.
  enum Tier {
    // Not set.
    TIER_UNSPECIFIED = 0;

    // STANDARD tier. BASIC_HDD is the preferred term for this tier.
    STANDARD = 1;

    // PREMIUM tier. BASIC_SSD is the preferred term for this tier.
    PREMIUM = 2;

    // BASIC instances offer a maximum capacity of 63.9 TB.
    // BASIC_HDD is an alias for STANDARD Tier, offering economical
    // performance backed by HDD.
    BASIC_HDD = 3;

    // BASIC instances offer a maximum capacity of 63.9 TB.
    // BASIC_SSD is an alias for PREMIUM Tier, and offers improved
    // performance backed by SSD.
    BASIC_SSD = 4;

    // HIGH_SCALE instances offer expanded capacity and performance scaling
    // capabilities.
    HIGH_SCALE_SSD = 6;
  }

  // Output only. The resource name of the instance, in the format
  // `projects/{project_id}/locations/{location_id}/instances/{instance_id}`.
  string name = 1 [(google.api.field_behavior) = OUTPUT_ONLY];

  // The description of the instance (2048 characters or less).
  string description = 2;

  // Output only. The instance state.
  State state = 5 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Additional information about the instance state, if available.
  string status_message = 6 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. The time when the instance was created.
  google.protobuf.Timestamp create_time = 7 [(google.api.field_behavior) = OUTPUT_ONLY];

  // The service tier of the instance.
  Tier tier = 8;

  // Resource labels to represent user provided metadata.
  map<string, string> labels = 9;

  // File system shares on the instance.
  // For this version, only a single file share is supported.
  repeated FileShareConfig file_shares = 10;

  // VPC networks to which the instance is connected.
  // For this version, only a single network is supported.
  repeated NetworkConfig networks = 11;

  // Server-specified ETag for the instance resource to prevent simultaneous
  // updates from overwriting each other.
  string etag = 12;

  // Output only. Reserved for future use.
  google.protobuf.BoolValue satisfies_pzs = 13 [(google.api.field_behavior) = OUTPUT_ONLY];
}

// CreateInstanceRequest creates an instance.
message CreateInstanceRequest {
  // Required. The instance's project and location, in the format
  // `projects/{project_id}/locations/{location}`. In Cloud Filestore,
  // locations map to GCP zones, for example **us-west1-b**.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "locations.googleapis.com/Location"
    }
  ];

  // Required. The ID of the instance to create.
  // The ID must be unique within the specified project and location.
  //
  // This value must start with a lowercase letter followed by up to 62
  // lowercase letters, numbers, or hyphens, and cannot end with a hyphen.
  string instance_id = 2 [(google.api.field_behavior) = REQUIRED];

  // Required. An [instance resource][google.cloud.filestore.v1beta1.Instance]
  Instance instance = 3 [(google.api.field_behavior) = REQUIRED];
}

// GetInstanceRequest gets the state of an instance.
message GetInstanceRequest {
  // Required. The instance resource name, in the format
  // `projects/{project_id}/locations/{location}/instances/{instance_id}`.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "file.googleapis.com/Instance"
    }
  ];
}

// UpdateInstanceRequest updates the settings of an instance.
message UpdateInstanceRequest {
  // Required. Mask of fields to update.  At least one path must be supplied in this
  // field.  The elements of the repeated paths field may only include these
  // fields:
  //
  // * "description"
  // * "file_shares"
  // * "labels"
  google.protobuf.FieldMask update_mask = 1 [(google.api.field_behavior) = REQUIRED];

  // Required. Only fields specified in update_mask are updated.
  Instance instance = 2 [(google.api.field_behavior) = REQUIRED];
}

// RestoreInstanceRequest restores an existing instances's file share from a
// snapshot or backup.
message RestoreInstanceRequest {
  // Required. The resource name of the instance, in the format
  // `projects/{project_id}/locations/{location_id}/instances/{instance_id}`.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "file.googleapis.com/Instance"
    }
  ];

  // Required. Name of the file share in the Cloud Filestore instance that the snapshot
  // is being restored to.
  string file_share = 2 [(google.api.field_behavior) = REQUIRED];

  oneof source {
    // The resource name of the snapshot, in the format
    // `projects/{project_id}/locations/{location_id}/snapshots/{snapshot_id}`.
    string source_snapshot = 3 [(google.api.resource_reference) = {
                                  type: "file.googleapis.com/Snapshot"
                                }];

    // The resource name of the backup, in the format
    // `projects/{project_id}/locations/{location_id}/backups/{backup_id}`.
    string source_backup = 4 [(google.api.resource_reference) = {
                                type: "file.googleapis.com/Backup"
                              }];
  }
}

// DeleteInstanceRequest deletes an instance.
message DeleteInstanceRequest {
  // Required. The instance resource name, in the format
  // `projects/{project_id}/locations/{location}/instances/{instance_id}`
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "file.googleapis.com/Instance"
    }
  ];
}

// ListInstancesRequest lists instances.
message ListInstancesRequest {
  // Required. The project and location for which to retrieve instance information,
  // in the format `projects/{project_id}/locations/{location}`. In Cloud
  // Filestore, locations map to GCP zones, for example **us-west1-b**. To
  // retrieve instance information for all locations, use "-" for the
  // `{location}` value.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "locations.googleapis.com/Location"
    }
  ];

  // The maximum number of items to return.
  int32 page_size = 2;

  // The next_page_token value to use if there are additional
  // results to retrieve for this list request.
  string page_token = 3;

  // Sort results. Supported values are "name", "name desc" or "" (unsorted).
  string order_by = 4;

  // List filter.
  string filter = 5;
}

// ListInstancesResponse is the result of ListInstancesRequest.
message ListInstancesResponse {
  // A list of instances in the project for the specified location.
  //
  // If the `{location}` value in the request is "-", the response contains a
  // list of instances from all locations. If any location is unreachable, the
  // response will only return instances in reachable locations and the
  // "unreachable" field will be populated with a list of unreachable locations.
  repeated Instance instances = 1;

  // The token you can use to retrieve the next page of results. Not returned
  // if there are no more results in the list.
  string next_page_token = 2;

  // Locations that could not be reached.
  repeated string unreachable = 3;
}

// A Cloud Filestore backup.
message Backup {
  option (google.api.resource) = {
    type: "file.googleapis.com/Backup"
    pattern: "projects/{project}/locations/{location}/backups/{backup}"
  };

  // The backup state.
  enum State {
    // State not set.
    STATE_UNSPECIFIED = 0;

    // Backup is being created.
    CREATING = 1;

    // Backup has been taken and the operation is being finalized. At this
    // point, changes to the file share will not be reflected in the backup.
    FINALIZING = 2;

    // Backup is available for use.
    READY = 3;

    // Backup is being deleted.
    DELETING = 4;
  }

  // Output only. The resource name of the backup, in the format
  // `projects/{project_id}/locations/{location_id}/backups/{backup_id}`.
  string name = 1 [(google.api.field_behavior) = OUTPUT_ONLY];

  // A description of the backup with 2048 characters or less.
  // Requests with longer descriptions will be rejected.
  string description = 2;

  // Output only. The backup state.
  State state = 3 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. The time when the backup was created.
  google.protobuf.Timestamp create_time = 4 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Resource labels to represent user provided metadata.
  map<string, string> labels = 5;

  // Output only. Capacity of the source file share when the backup was created.
  int64 capacity_gb = 6 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. The size of the storage used by the backup. As backups share storage,
  // this number is expected to change with backup creation/deletion.
  int64 storage_bytes = 7 [(google.api.field_behavior) = OUTPUT_ONLY];

  // The resource name of the source Cloud Filestore instance, in the format
  // `projects/{project_id}/locations/{location_id}/instances/{instance_id}`,
  // used to create this backup.
  string source_instance = 8 [(google.api.resource_reference) = {
                                type: "file.googleapis.com/Instance"
                              }];

  // Name of the file share in the source Cloud Filestore instance that the
  // backup is created from.
  string source_file_share = 9;

  // Output only. The service tier of the source Cloud Filestore instance that this backup
  // is created from.
  Instance.Tier source_instance_tier = 10 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Amount of bytes that will be downloaded if the backup is restored
  int64 download_bytes = 11 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Reserved for future use.
  google.protobuf.BoolValue satisfies_pzs = 12 [(google.api.field_behavior) = OUTPUT_ONLY];
}

// CreateBackupRequest creates a backup.
message CreateBackupRequest {
  // Required. The backup's project and location, in the format
  // `projects/{project_id}/locations/{location}`. In Cloud Filestore,
  // backup locations map to GCP regions, for example **us-west1**.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "locations.googleapis.com/Location"
    }
  ];

  // Required. A [backup resource][google.cloud.filestore.v1beta1.Backup]
  Backup backup = 2 [(google.api.field_behavior) = REQUIRED];

  // Required. The ID to use for the backup.
  // The ID must be unique within the specified project and location.
  //
  // This value must start with a lowercase letter followed by up to 62
  // lowercase letters, numbers, or hyphens, and cannot end with a hyphen.
  string backup_id = 3 [(google.api.field_behavior) = REQUIRED];
}

// DeleteBackupRequest deletes a backup.
message DeleteBackupRequest {
  // Required. The backup resource name, in the format
  // `projects/{project_id}/locations/{location}/backups/{backup_id}`
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "file.googleapis.com/Backup"
    }
  ];
}

// UpdateBackupRequest updates description and/or labels for a backup.
message UpdateBackupRequest {
  // Required. A [backup resource][google.cloud.filestore.v1beta1.Backup]
  Backup backup = 1 [(google.api.field_behavior) = REQUIRED];

  // Required. Mask of fields to update.  At least one path must be supplied in this
  // field.
  google.protobuf.FieldMask update_mask = 2 [(google.api.field_behavior) = REQUIRED];
}

// GetBackupRequest gets the state of a backup.
message GetBackupRequest {
  // Required. The backup resource name, in the format
  // `projects/{project_id}/locations/{location}/backups/{backup_id}`.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "file.googleapis.com/Backup"
    }
  ];
}

// ListBackupsRequest lists backups.
message ListBackupsRequest {
  // Required. The project and location for which to retrieve backup information,
  // in the format `projects/{project_id}/locations/{location}`.
  // In Cloud Filestore, backup locations map to GCP regions,
  // for example **us-west1**.
  // To retrieve backup information for all locations, use "-" for the
  // `{location}` value.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "locations.googleapis.com/Location"
    }
  ];

  // The maximum number of items to return.
  int32 page_size = 2;

  // The next_page_token value to use if there are additional
  // results to retrieve for this list request.
  string page_token = 3;

  // Sort results. Supported values are "name", "name desc" or "" (unsorted).
  string order_by = 4;

  // List filter.
  string filter = 5;
}

// ListBackupsResponse is the result of ListBackupsRequest.
message ListBackupsResponse {
  // A list of backups in the project for the specified location.
  //
  // If the `{location}` value in the request is "-", the response contains a
  // list of backups from all locations. If any location is unreachable, the
  // response will only return backups in reachable locations and the
  // "unreachable" field will be populated with a list of unreachable
  // locations.
  repeated Backup backups = 1;

  // The token you can use to retrieve the next page of results. Not returned
  // if there are no more results in the list.
  string next_page_token = 2;

  // Locations that could not be reached.
  repeated string unreachable = 3;
}