// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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";
import "brpc/options.proto";
import "brpc/streaming_rpc_meta.proto";

package brpc.policy;
option java_package="com.brpc.policy";
option java_outer_classname="BaiduRpcProto";

message RpcMeta {
    optional RpcRequestMeta request = 1;
    optional RpcResponseMeta response = 2;
    optional int32 compress_type = 3;
    optional int64 correlation_id = 4;
    optional int32 attachment_size = 5;
    optional ChunkInfo chunk_info = 6;
    optional bytes authentication_data = 7;
    optional StreamSettings stream_settings = 8;
    map<string, string> user_fields = 9;
    optional ContentType content_type = 10;
    optional int32 checksum_type = 11;
    optional bytes checksum_value = 12;
}

message RpcRequestMeta {
    required string service_name = 1;
    required string method_name = 2;
    optional int64 log_id = 3;
    optional int64 trace_id = 4;
    optional int64 span_id = 5;
    optional int64 parent_span_id = 6;
    optional string request_id = 7; // correspond to x-request-id in http header
    optional int32 timeout_ms = 8;  // client's timeout setting for current call
}

message RpcResponseMeta {
    optional int32 error_code = 1;
    optional string error_text = 2;
}