// Copyright 2025 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.datacatalog.v1;

import "google/cloud/datacatalog/v1/common.proto";
import "google/cloud/datacatalog/v1/physical_schema.proto";

option csharp_namespace = "Google.Cloud.DataCatalog.V1";
option go_package = "cloud.google.com/go/datacatalog/apiv1/datacatalogpb;datacatalogpb";
option java_multiple_files = true;
option java_outer_classname = "DataplexSpecProto";
option java_package = "com.google.cloud.datacatalog.v1";
option php_namespace = "Google\\Cloud\\DataCatalog\\V1";
option ruby_package = "Google::Cloud::DataCatalog::V1";

// Common Dataplex fields.
message DataplexSpec {
  // Fully qualified resource name of an asset in Dataplex, to which the
  // underlying data source (Cloud Storage bucket or BigQuery dataset) of the
  // entity is attached.
  string asset = 1;

  // Format of the data.
  PhysicalSchema data_format = 2;

  // Compression format of the data, e.g., zip, gzip etc.
  string compression_format = 3;

  // Project ID of the underlying Cloud Storage or BigQuery data. Note that
  // this may not be the same project as the correspondingly Dataplex lake /
  // zone / asset.
  string project_id = 4;
}

// Entry specyfication for a Dataplex fileset.
message DataplexFilesetSpec {
  // Common Dataplex fields.
  DataplexSpec dataplex_spec = 1;
}

// Entry specification for a Dataplex table.
message DataplexTableSpec {
  // List of external tables registered by Dataplex in other systems based on
  // the same underlying data.
  //
  // External tables allow to query this data in those systems.
  repeated DataplexExternalTable external_tables = 1;

  // Common Dataplex fields.
  DataplexSpec dataplex_spec = 2;

  // Indicates if the table schema is managed by the user or not.
  bool user_managed = 3;
}

// External table registered by Dataplex.
// Dataplex publishes data discovered from an asset into multiple other systems
// (BigQuery, DPMS) in form of tables. We call them "external tables". External
// tables are also synced into the Data Catalog.
// This message contains pointers to
// those external tables (fully qualified name, resource name et cetera) within
// the Data Catalog.
message DataplexExternalTable {
  // Service in which the external table is registered.
  IntegratedSystem system = 1;

  // Fully qualified name (FQN) of the external table.
  string fully_qualified_name = 28;

  // Google Cloud resource name of the external table.
  string google_cloud_resource = 3;

  // Name of the Data Catalog entry representing the external table.
  string data_catalog_entry = 4;
}
