// Copyright 2025 Envoy Project Authors
//
// 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 envoy.config.grpc_credential.v3;

import "envoy/config/core/v3/base.proto";

import "udpa/annotations/sensitive.proto";
import "udpa/annotations/status.proto";
import "udpa/annotations/versioning.proto";

option java_package = "io.envoyproxy.envoy.config.grpc_credential.v3";
option java_outer_classname = "FileBasedMetadataProto";
option java_multiple_files = true;
option go_package = "github.com/envoyproxy/go-control-plane/envoy/config/grpc_credential/v3;grpc_credentialv3";
option (udpa.annotations.file_status).package_version_status = ACTIVE;

// [#protodoc-title: Grpc Credentials File Based Metadata]
// Configuration for File Based Metadata Grpc Credentials Plugin
// [#extension: envoy.grpc_credentials.file_based_metadata]

message FileBasedMetadataConfig {
  option (udpa.annotations.versioning).previous_message_type =
      "envoy.config.grpc_credential.v2alpha.FileBasedMetadataConfig";

  // Location or inline data of secret to use for authentication of the Google gRPC connection
  // this secret will be attached to a header of the gRPC connection
  core.v3.DataSource secret_data = 1 [(udpa.annotations.sensitive) = true];

  // Metadata header key to use for sending the secret data
  // if no header key is set, "authorization" header will be used
  string header_key = 2;

  // Prefix to prepend to the secret in the metadata header
  // if no prefix is set, the default is to use no prefix
  string header_prefix = 3;
}
