go use protobuf

First install go: not to say, feel free to Baidu, or my reference, https://blog.csdn.net/u013755520/article/details/89031598 have installed go to the end;

Installation protobuf go and call interface, refer to my: https://blog.csdn.net/u013755520/article/details/91375830  ;

protobuf effect, a serialized object, the [] byte becomes: obj {Type} various properties; this object can be any type;

Analogy: https://blog.csdn.net/u013755520/article/details/90546726    binary packet, the [] byte becomes {uint32 uint32 [] byte} objects, only the basic type of the object;

protobuf and bianry packet belong to the scope of the encoding.

---

1.protobuf grammar

1.1 Message Type

 

1.2 Data Type

 

2. Use protobuf

2.1 in accordance with the syntax for writing xx.proto files in a directory such as proto / under

syntax = "proto3";
package pb;

message Person {
    string name = 1;
    int32 age = 2;
    repeated string emails = 3;
    repeated string phones = 4;
}

message PhoneNumber {
    string number = 1;
    PhoneType type = 2;
}
enum PhoneType {
    MOBILE = 0;
    HOME = 1;
    WORK = 2;
}

2.2 compiler: cd to the proto / directory, execute the following command

protoc --go_out=./   *.proto

It will be in the current directory, according to the files in the current directory xx.proto generate xx.pd.go file; this file each go structure, have achieved proto.Message interfaces, but I do not know why in goland You are not actually suggesting? ? ? To be studied

2.3 xx.pb.go file in the program

That is, directly in the program, as in the structure pb.go good open space, it can be directly through proto.Marshal [] byte is converted into the obj pb.go;

Conversely, directly in the program can be put on by proto.Unmashal pb.go obj is converted to [] of byte

package main

import (
	"fmt"
	"github.com/micro/protobuf/proto"
	pb "rpc/proto"
)

func main(){
	person := &pb.Person{
		Name:"yz",
		Age:11,
		Emails:[]string{"[email protected]","[email protected]"},
		Phones:[]*pb.PhoneNumber{
			&pb.PhoneNumber{
				Number:"123456",
				Type:pb.PhoneType_HOME,
			},
			&pb.PhoneNumber{
				Number:"123456",
				Type:pb.PhoneType_MOBILE,
			},
			&pb.PhoneNumber{
				Number:"123456",
				Type:pb.PhoneType_WORK,
			},
		},
	}

	//marshal:  obj---[]byte
	data,err := proto.Marshal(person)
	if err != nil {
		fmt.Println(err)
	}

	//unmarshal : []byte---obj
	newPersonObj := &pb.Person{}
	err = proto.Unmarshal(data,newPersonObj)
	if err != nil {
		fmt.Println(err)
	}

	fmt.Println(newPersonObj)
}