syntax = "proto3";    // 版本号
option go_package="./;proto";     //参数1 表示生成到哪个目录 ，参数2 表示生成的文件的package
package proto ;   //默认在哪个包
//结构体
message Order {
  int64 id = 1;
  string no = 2;
  string tel =3;
  string address = 4;
  string addTime = 5;
  OrderStatus status = 6;
  message Producets {
    int64 id = 1;
    string title = 2;
    double price =3;
    int32 num = 4;
  }
  Producets producets = 7;
}
//也可写这里
// message Producets {
//     int64 id = 1;
//     string title = 2;
//     double price =3;
//     int32 num = 4;
// }
//请求 request struct
message OrderRequest {
  int32 activityType = 1;
}
//响应 resp struct
message OrderResp{
  int32 discountAmount = 1;
  string code = 2;
  string msg = 3;
}
enum OrderStatus {
  FIRST_VAL = 0 ;  //The first enum value must be zero in proto3.
  SECOND_VAL = 1;
}
//RPC 服务 接口
service SearchService {
  //rpc 服务
  rpc SearchOrder (OrderRequest) returns (OrderResp){}
}