Book Image

Protocol Buffers Handbook

By : Clément Jean
Book Image

Protocol Buffers Handbook

By: Clément Jean

Overview of this book

Explore how Protocol Buffers (Protobuf) serialize structured data and provides a language-neutral, platform-neutral, and extensible solution. With this guide to mastering Protobuf, you'll build your skills to effectively serialize, transmit, and manage data across diverse platforms and languages. This book will help you enter the world of Protocol Buffers by unraveling the intricate nuances of Protobuf syntax and showing you how to define complex data structures. As you progress, you’ll learn schema evolution, ensuring seamless compatibility as your projects evolve. The book also covers advanced topics such as custom options and plugins, allowing you to tailor validation processes to your specific requirements. You’ll understand how to automate project builds using cutting-edge tools such as Buf and Bazel, streamlining your development workflow. With hands-on projects in Go and Python programming, you’ll learn how to practically apply Protobuf concepts. Later chapters will show you how to integrate data interchange capabilities across different programming languages, enabling efficient collaboration and system interoperability. By the end of this book, you’ll have a solid understanding of Protobuf internals, enabling you to discern when and how to use and redefine your approach to data serialization.
Table of Contents (13 chapters)

Services

Finally, the last concept we are going to see is service. service is designed for Protobuf interaction with RPC frameworks, such as gRPC. They define a type-safe contract that the server should implement and that the client can call:

EBNF – Service syntax

rpc = "rpc" ident "(" [ "stream" ] messageType ")" "returns" "(" [ "stream" ] messageType ")" (( "{" option "}" ) | ";")
service = "service" ident "{" { option | rpc } "}"

For example, we could have the following service:

service BookService {
  rpc ListBooks(ListBooksRequest) returns (ListBooksResponse);
  rpc GetBook(GetBookRequest) returns (Book);
  rpc CreateBook(CreateBookRequest) returns (Book);
  rpc UpdateBook(UpdateBookRequest) returns (Book);
  rpc DeleteBook(DeleteBookRequest) returns (google.protobuf.Empty...