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// 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.datastore.admin.v1;

import "google/api/annotations.proto";
import "google/datastore/admin/v1/index.proto";
import "google/longrunning/operations.proto";
import "google/protobuf/timestamp.proto";

option csharp_namespace = "Google.Cloud.Datastore.Admin.V1";
option go_package = "google.golang.org/genproto/googleapis/datastore/admin/v1;admin";
option java_multiple_files = true;
option java_outer_classname = "DatastoreAdminProto";
option java_package = "com.google.datastore.admin.v1";

// Google Cloud Datastore Admin API
//
// The Datastore Admin API provides several admin services for Cloud Datastore.
//
// -----------------------------------------------------------------------------
// ## Concepts
//
// Project, namespace, kind, and entity as defined in the Google Cloud Datastore
// API.
//
// Operation: An Operation represents work being performed in the background.
//
// EntityFilter: Allows specifying a subset of entities in a project. This is
// specified as a combination of kinds and namespaces (either or both of which
// may be all).
//
// -----------------------------------------------------------------------------
// ## Services
//
// # Export/Import
//
// The Export/Import service provides the ability to copy all or a subset of
// entities to/from Google Cloud Storage.
//
// Exported data may be imported into Cloud Datastore for any Google Cloud
// Platform project. It is not restricted to the export source project. It is
// possible to export from one project and then import into another.
//
// Exported data can also be loaded into Google BigQuery for analysis.
//
// Exports and imports are performed asynchronously. An Operation resource is
// created for each export/import. The state (including any errors encountered)
// of the export/import may be queried via the Operation resource.
//
// # Index
//
// The index service manages Cloud Datastore composite indexes.
//
// Index creation and deletion are performed asynchronously.
// An Operation resource is created for each such asynchronous operation.
// The state of the operation (including any errors encountered)
// may be queried via the Operation resource.
//
// # Operation
//
// The Operations collection provides a record of actions performed for the
// specified project (including any operations in progress). Operations are not
// created directly but through calls on other collections or resources.
//
// An operation that is not yet done may be cancelled. The request to cancel is
// asynchronous and the operation may continue to run for some time after the
// request to cancel is made.
//
// An operation that is done may be deleted so that it is no longer listed as
// part of the Operation collection.
//
// ListOperations returns all pending operations, but not completed operations.
//
// Operations are created by service DatastoreAdmin,
// but are accessed via service google.longrunning.Operations.
service DatastoreAdmin {
  // Exports a copy of all or a subset of entities from Google Cloud Datastore
  // to another storage system, such as Google Cloud Storage. Recent updates to
  // entities may not be reflected in the export. The export occurs in the
  // background and its progress can be monitored and managed via the
  // Operation resource that is created. The output of an export may only be
  // used once the associated operation is done. If an export operation is
  // cancelled before completion it may leave partial data behind in Google
  // Cloud Storage.
  rpc ExportEntities(ExportEntitiesRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1/projects/{project_id}:export"
      body: "*"
    };
  }

  // Imports entities into Google Cloud Datastore. Existing entities with the
  // same key are overwritten. The import occurs in the background and its
  // progress can be monitored and managed via the Operation resource that is
  // created. If an ImportEntities operation is cancelled, it is possible
  // that a subset of the data has already been imported to Cloud Datastore.
  rpc ImportEntities(ImportEntitiesRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1/projects/{project_id}:import"
      body: "*"
    };
  }

  // Gets an index.
  rpc GetIndex(GetIndexRequest) returns (Index) {
    option (google.api.http) = {
      get: "/v1/projects/{project_id}/indexes/{index_id}"
    };
  }

  // Lists the indexes that match the specified filters.  Datastore uses an
  // eventually consistent query to fetch the list of indexes and may
  // occasionally return stale results.
  rpc ListIndexes(ListIndexesRequest) returns (ListIndexesResponse) {
    option (google.api.http) = {
      get: "/v1/projects/{project_id}/indexes"
    };
  }
}

// Metadata common to all Datastore Admin operations.
message CommonMetadata {
  // The various possible states for an ongoing Operation.
  enum State {
    // Unspecified.
    STATE_UNSPECIFIED = 0;

    // Request is being prepared for processing.
    INITIALIZING = 1;

    // Request is actively being processed.
    PROCESSING = 2;

    // Request is in the process of being cancelled after user called
    // google.longrunning.Operations.CancelOperation on the operation.
    CANCELLING = 3;

    // Request has been processed and is in its finalization stage.
    FINALIZING = 4;

    // Request has completed successfully.
    SUCCESSFUL = 5;

    // Request has finished being processed, but encountered an error.
    FAILED = 6;

    // Request has finished being cancelled after user called
    // google.longrunning.Operations.CancelOperation.
    CANCELLED = 7;
  }

  // The time that work began on the operation.
  google.protobuf.Timestamp start_time = 1;

  // The time the operation ended, either successfully or otherwise.
  google.protobuf.Timestamp end_time = 2;

  // The type of the operation. Can be used as a filter in
  // ListOperationsRequest.
  OperationType operation_type = 3;

  // The client-assigned labels which were provided when the operation was
  // created. May also include additional labels.
  map<string, string> labels = 4;

  // The current state of the Operation.
  State state = 5;
}

// Measures the progress of a particular metric.
message Progress {
  // The amount of work that has been completed. Note that this may be greater
  // than work_estimated.
  int64 work_completed = 1;

  // An estimate of how much work needs to be performed. May be zero if the
  // work estimate is unavailable.
  int64 work_estimated = 2;
}

// The request for
// [google.datastore.admin.v1.DatastoreAdmin.ExportEntities][google.datastore.admin.v1.DatastoreAdmin.ExportEntities].
message ExportEntitiesRequest {
  // Project ID against which to make the request.
  string project_id = 1;

  // Client-assigned labels.
  map<string, string> labels = 2;

  // Description of what data from the project is included in the export.
  EntityFilter entity_filter = 3;

  // Location for the export metadata and data files.
  //
  // The full resource URL of the external storage location. Currently, only
  // Google Cloud Storage is supported. So output_url_prefix should be of the
  // form: `gs://BUCKET_NAME[/NAMESPACE_PATH]`, where `BUCKET_NAME` is the
  // name of the Cloud Storage bucket and `NAMESPACE_PATH` is an optional Cloud
  // Storage namespace path (this is not a Cloud Datastore namespace). For more
  // information about Cloud Storage namespace paths, see
  // [Object name
  // considerations](https://cloud.google.com/storage/docs/naming#object-considerations).
  //
  // The resulting files will be nested deeper than the specified URL prefix.
  // The final output URL will be provided in the
  // [google.datastore.admin.v1.ExportEntitiesResponse.output_url][google.datastore.admin.v1.ExportEntitiesResponse.output_url]
  // field. That value should be used for subsequent ImportEntities operations.
  //
  // By nesting the data files deeper, the same Cloud Storage bucket can be used
  // in multiple ExportEntities operations without conflict.
  string output_url_prefix = 4;
}

// The request for
// [google.datastore.admin.v1.DatastoreAdmin.ImportEntities][google.datastore.admin.v1.DatastoreAdmin.ImportEntities].
message ImportEntitiesRequest {
  // Project ID against which to make the request.
  string project_id = 1;

  // Client-assigned labels.
  map<string, string> labels = 2;

  // The full resource URL of the external storage location. Currently, only
  // Google Cloud Storage is supported. So input_url should be of the form:
  // `gs://BUCKET_NAME[/NAMESPACE_PATH]/OVERALL_EXPORT_METADATA_FILE`, where
  // `BUCKET_NAME` is the name of the Cloud Storage bucket, `NAMESPACE_PATH` is
  // an optional Cloud Storage namespace path (this is not a Cloud Datastore
  // namespace), and `OVERALL_EXPORT_METADATA_FILE` is the metadata file written
  // by the ExportEntities operation. For more information about Cloud Storage
  // namespace paths, see
  // [Object name
  // considerations](https://cloud.google.com/storage/docs/naming#object-considerations).
  //
  // For more information, see
  // [google.datastore.admin.v1.ExportEntitiesResponse.output_url][google.datastore.admin.v1.ExportEntitiesResponse.output_url].
  string input_url = 3;

  // Optionally specify which kinds/namespaces are to be imported. If provided,
  // the list must be a subset of the EntityFilter used in creating the export,
  // otherwise a FAILED_PRECONDITION error will be returned. If no filter is
  // specified then all entities from the export are imported.
  EntityFilter entity_filter = 4;
}

// The response for
// [google.datastore.admin.v1.DatastoreAdmin.ExportEntities][google.datastore.admin.v1.DatastoreAdmin.ExportEntities].
message ExportEntitiesResponse {
  // Location of the output metadata file. This can be used to begin an import
  // into Cloud Datastore (this project or another project). See
  // [google.datastore.admin.v1.ImportEntitiesRequest.input_url][google.datastore.admin.v1.ImportEntitiesRequest.input_url].
  // Only present if the operation completed successfully.
  string output_url = 1;
}

// Metadata for ExportEntities operations.
message ExportEntitiesMetadata {
  // Metadata common to all Datastore Admin operations.
  CommonMetadata common = 1;

  // An estimate of the number of entities processed.
  Progress progress_entities = 2;

  // An estimate of the number of bytes processed.
  Progress progress_bytes = 3;

  // Description of which entities are being exported.
  EntityFilter entity_filter = 4;

  // Location for the export metadata and data files. This will be the same
  // value as the
  // [google.datastore.admin.v1.ExportEntitiesRequest.output_url_prefix][google.datastore.admin.v1.ExportEntitiesRequest.output_url_prefix]
  // field. The final output location is provided in
  // [google.datastore.admin.v1.ExportEntitiesResponse.output_url][google.datastore.admin.v1.ExportEntitiesResponse.output_url].
  string output_url_prefix = 5;
}

// Metadata for ImportEntities operations.
message ImportEntitiesMetadata {
  // Metadata common to all Datastore Admin operations.
  CommonMetadata common = 1;

  // An estimate of the number of entities processed.
  Progress progress_entities = 2;

  // An estimate of the number of bytes processed.
  Progress progress_bytes = 3;

  // Description of which entities are being imported.
  EntityFilter entity_filter = 4;

  // The location of the import metadata file. This will be the same value as
  // the
  // [google.datastore.admin.v1.ExportEntitiesResponse.output_url][google.datastore.admin.v1.ExportEntitiesResponse.output_url]
  // field.
  string input_url = 5;
}

// Identifies a subset of entities in a project. This is specified as
// combinations of kinds and namespaces (either or both of which may be all, as
// described in the following examples).
// Example usage:
//
// Entire project:
//   kinds=[], namespace_ids=[]
//
// Kinds Foo and Bar in all namespaces:
//   kinds=['Foo', 'Bar'], namespace_ids=[]
//
// Kinds Foo and Bar only in the default namespace:
//   kinds=['Foo', 'Bar'], namespace_ids=['']
//
// Kinds Foo and Bar in both the default and Baz namespaces:
//   kinds=['Foo', 'Bar'], namespace_ids=['', 'Baz']
//
// The entire Baz namespace:
//   kinds=[], namespace_ids=['Baz']
message EntityFilter {
  // If empty, then this represents all kinds.
  repeated string kinds = 1;

  // An empty list represents all namespaces. This is the preferred
  // usage for projects that don't use namespaces.
  //
  // An empty string element represents the default namespace. This should be
  // used if the project has data in non-default namespaces, but doesn't want to
  // include them.
  // Each namespace in this list must be unique.
  repeated string namespace_ids = 2;
}

// The request for
// [google.datastore.admin.v1.DatastoreAdmin.GetIndex][google.datastore.admin.v1.DatastoreAdmin.GetIndex].
message GetIndexRequest {
  // Project ID against which to make the request.
  string project_id = 1;

  // The resource ID of the index to get.
  string index_id = 3;
}

// The request for
// [google.datastore.admin.v1.DatastoreAdmin.ListIndexes][google.datastore.admin.v1.DatastoreAdmin.ListIndexes].
message ListIndexesRequest {
  // Project ID against which to make the request.
  string project_id = 1;

  string filter = 3;

  // The maximum number of items to return.  If zero, then all results will be
  // returned.
  int32 page_size = 4;

  // The next_page_token value returned from a previous List request, if any.
  string page_token = 5;
}

// The response for
// [google.datastore.admin.v1.DatastoreAdmin.ListIndexes][google.datastore.admin.v1.DatastoreAdmin.ListIndexes].
message ListIndexesResponse {
  // The indexes.
  repeated Index indexes = 1;

  // The standard List next-page token.
  string next_page_token = 2;
}

// Metadata for Index operations.
message IndexOperationMetadata {
  // Metadata common to all Datastore Admin operations.
  CommonMetadata common = 1;

  // An estimate of the number of entities processed.
  Progress progress_entities = 2;

  // The index resource ID that this operation is acting on.
  string index_id = 3;
}

// Operation types.
enum OperationType {
  // Unspecified.
  OPERATION_TYPE_UNSPECIFIED = 0;

  // ExportEntities.
  EXPORT_ENTITIES = 1;

  // ImportEntities.
  IMPORT_ENTITIES = 2;

  // CreateIndex.
  CREATE_INDEX = 3;

  // DeleteIndex.
  DELETE_INDEX = 4;
}