sum.proto

syntax = "proto3";
package sumpb;

option go_package="sumpb";

// uncomment for inline HTTP desc google.api.http
import "google/api/annotations.proto";

service Summator {
  rpc Sum(SumRequest) returns (SumResponse) {
    option (google.api.http) = {
                                // uncomment get or post+body or use YAML annotation
                                //get: "/v1/example/sum/{a}/{b}"
                                post: "/v1/example/sum/{a}"
                                body: "b"
    };
  }
}
// SumRequest is a request for Summator service.
message SumRequest {
  // A is the number we're adding to. Can't be zero for the sake of example.
  int64 a = 1;
  // B is the number we're adding.
  NestedB b = 2;
}

message SumResponse {
  int64 sum = 1;
  string error = 2;
}

message NestedB {
  int64 b = 1;
}