Book Image

Go Programming Cookbook - Second Edition

By : Aaron Torres
Book Image

Go Programming Cookbook - Second Edition

By: Aaron Torres

Overview of this book

Go (or Golang) is a statically typed programming language developed at Google. Known for its vast standard library, it also provides features such as garbage collection, type safety, dynamic-typing capabilities, and additional built-in types. This book will serve as a reference while implementing Go features to build your own applications. This Go cookbook helps you put into practice the advanced concepts and libraries that Golang offers. The recipes in the book follow best practices such as documentation, testing, and vendoring with Go modules, as well as performing clean abstractions using interfaces. You'll learn how code works and the common pitfalls to watch out for. The book covers basic type and error handling, and then moves on to explore applications, such as websites, command-line tools, and filesystems, that interact with users. You'll even get to grips with parallelism, distributed systems, and performance tuning. By the end of the book, you'll be able to use open source code and concepts in Go programming to build enterprise-class applications without any hassle.
Table of Contents (16 chapters)

Making use of OAuth2 clients

OAuth2 is a relatively common protocol for speaking with APIs. The golang.org/x/oauth2 package provides a pretty flexible client for working with OAuth2. It has subpackages that specify endpoints for various providers such as Facebook, Google, and GitHub.

This recipe will demonstrate how to create a new GitHub OAuth2 client and some of its basic usages.

Getting ready

After completing the initial setup steps mentioned in the Technical requirements section at the beginning of this chapter, proceed with the following steps:

  1. Configure an OAuth Client at https://github.com/settings/applications/new.
  2. Set the environment variables with your client ID and secret:
    • export GITHUB_CLIENT="your_client"
    • export GITHUB_SECRET="your_secret"
  3. Brush up on the GitHub API documentation at https://developer.github.com/v3/.

How to do it...

These steps cover writing and...