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)

Encoding data to type with --encode

Now, we will start to see flags that are important for learning Protobuf and inspecting the serialized data. We will start with the flag called --encode.

As its name suggests, the --encode flag is used to encode data. It will take some data and turn it into binary (serialization). This is especially useful at this point in the book because we can inspect data without having to write code yet. We simply need protoc and the knowledge we have on how to write in Protobuf Text Format.

Our goal in this section is not so much understanding the binary produced. We care about generating it first. In the next chapter, we will talk about the binary format. So, let us just write a simple textpb file and encode it with the –-encode flag.

We will have the following textpb file (encode/user.txtpb):

id: 42
name: "Clément"

We will also have the following .proto file (encode/user.proto):

syntax = "proto3";
message User...