Marshal/Unmarshal Protocol Buffers in Go

Internal

• Protocol Buffer Concepts

Overview

This example uses this message definition:

message SomeMessage {
  int32 id = 1;
  bool  is_valid = 2;
  string name = 3;
  repeated string sample_list = 4;
}

The Go code is generated following the instructions from:

Protocol Buffers Go Code Generation

Marshaling and Unmarshaling

import (
	"fmt"
	"os"
	"example.com/blue/pkg/somepkgpb"
	"github.com/golang/protobuf/proto"
)

sm := &somepkgpb.SomeMessage{
	Id:         1,
	IsValid:    true,
	Name:       "something",
	SampleList: []string{"a", "b", "c"},
}

ba, err := proto.Marshal(sm)
if err != nil { ... }
	
err = os.WriteFile("somefile", ba, 0644)
if err != nil { ... }

ba2, err := os.ReadFile(fileName)
if err != nil { ... }

sm2 := &somepkgpb.SomeMessage{}
err = proto.Unmarshal(ba2, sm2)
if err != nil { ... }