Protobuf

Table of Contents Overview Go How it's done Sending Message C++ google::protobuf google::protobuf::compiler

Overview

• Protobuf: https://github.com/google/protobuf
• Language guide: https://developers.google.com/protocol-buffers/docs/proto3

Go

• Core API: https://godoc.org/github.com/golang/protobuf/proto
• Generated Code: https://developers.google.com/protocol-buffers/docs/reference/go-generated
• Why Go Protobuf?:
  • Existing approaches
    • gobs: good for go-only env. but not between multi-language env
    • XML: not very effcient representation
• protobuf is for Message <=> byte[]

How it's done

• https://godoc.org/github.com/golang/protobuf/proto

Sending Message

book := &pb.AddressBook{}
// ...

// marshall book proto.Message into byte[]
out, err := proto.Marshal(book)

// byte[] can be sent or saved to disk etc.
ioutil.WriteFile(fname, out, 0644);

C++

• Core API: https://developers.google.com/protocol-buffers/docs/reference/cpp/
• Generated Code: https://developers.google.com/protocol-buffers/docs/reference/cpp-generated

google::protobuf

• core runtime library

google::protobuf::compiler

• protoc compiler