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Protocol Buffers Handbook

Protocol Buffers Handbook

By : Clément Jean
5 (2)
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Protocol Buffers Handbook

Protocol Buffers Handbook

5 (2)
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)
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The project

In this chapter, we are going to create a protoc plugin that generates code validating the user input for a phone number and email address in our AddressBook application. This involves creating a Protobuf custom option and writing the actual plugin logic to generate the validation code.

The overall goal of this chapter is to have a CLI that checks the user input. Let’s say the user enters the following command:

$ go run main.go add --kind per --name Clement --phone 111

It should return the following error:

error: 111 is not a valid phone number

Similarly, for emails, let’s say the user enters the following:

$ go run main.go add --kind per --name Clement --email 111

It should return the following error:

error: 111 is not a valid email

And obviously, this should also work for company contacts.

On top of that, we will add an option to the protoc plugin that lets us choose which regexp rule to use in order to check the phone number. The...

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