syntax = "proto3";

package envoy.config.grpc_credential.v2alpha;

import "envoy/api/v2/core/base.proto";

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

option java_package = "io.envoyproxy.envoy.config.grpc_credential.v2alpha";
option java_outer_classname = "FileBasedMetadataProto";
option java_multiple_files = true;
option go_package = "github.com/envoyproxy/go-control-plane/envoy/config/grpc_credential/v2alpha";
option (udpa.annotations.file_status).package_version_status = FROZEN;

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

message 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
  api.v2.core.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;
}