go下的Prototype学习笔记

本博文讲解prototype的学习笔记，内容包含了syntax、option go_package、message、service进行讲解，举例了常见写法。

syntax = "proto3"; // 声明编译器用的是prototype3
package person;
option go_package="/projectRPCTest3/pb/person;person";
message PersonReq{
    string name =1;
    int32 age = 2;
}
message PersonRes{
    string name = 1;
    int32 age = 2;
}
service SearchService {
    rpc Search(PersonReq) returns (PersonRes);
    rpc SearchIn(stream PersonReq) returns(PersonRes);
    rpc SearchOut(PersonReq) returns (stream PersonRes);
    rpc SearchIO(stream PersonReq) returns (stream PersonRes);
}

1.syntax 声明语法版本

syntax = "proto3"; 

2.package 给当前的proto分配包名称

package person;

3.option

option go_package = "/projectRPCTest3/pb/person;person";

影响到实际效果是：

• Go 包的路径：/projectRPCTest3/pb/person
• Go 包名：person

4.message

message PersonRes{
    string name = 1;
    int32 age = 2;
}

4.1 切片数组

    repeated string hobbies = 3;  // 表示多个字符串
    repeated int32 scores = 4;    // 表示多个整数

4.2 map

 map<string, int32> scores = 3;  // 例如，保存各科成绩

4.3 类型嵌套

Message User {
	int32 id = 1;
	string name = 2;
}
Message Student{
	int32 id = 1;
	User user = 2;
	int32 score = 3;
}

5. 消息定义

service SearchService {
    rpc Search(PersonReq) returns (PersonRes);
    rpc SearchIn(stream PersonReq) returns(PersonRes);
    rpc SearchOut(PersonReq) returns (stream PersonRes);
    rpc SearchIO(stream PersonReq) returns (stream PersonRes);
}