// Copyright 2025 PingCAP, Inc.
//
// 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 = "proto2";

package dtpb;

// Note: This message is something different to VectorIndexDefinition.
// VectorIndexDefinition defines an index, comes from table DDL.
// It includes information about how index should be constructed,
// for example, it contains HNSW's 'efConstruct' parameter.
// However, VectorIndexFilePropsV1Deprecated provides information for read out the index,
// for example, very basic information about what the index is, and how it is stored.
message VectorIndexFilePropsV1Deprecated {
    // This message is deprecated.
    // Dont generate new message with it.

    optional string index_kind = 1;       // The value is tipb.VectorIndexKind
    optional string distance_metric = 2;  // The value is tipb.VectorDistanceMetric
    optional uint64 dimensions = 3;
    optional int64 index_id = 4;  // deprecated. Don't use it.
    optional uint64 index_bytes = 5; // deprecated. Don't use it.
}