Book Image

.Go Programming Blueprints - Second Edition

By : Mat Ryer
Book Image

.Go Programming Blueprints - Second Edition

By: Mat Ryer

Overview of this book

Go is the language of the Internet age, and the latest version of Go comes with major architectural changes. Implementation of the language, runtime, and libraries has changed significantly. The compiler and runtime are now written entirely in Go. The garbage collector is now concurrent and provides dramatically lower pause times by running in parallel with other Go routines when possible. This book will show you how to leverage all the latest features and much more. This book shows you how to build powerful systems and drops you into real-world situations. You will learn to develop high quality command-line tools that utilize the powerful shell capabilities and perform well using Go's in-built concurrency mechanisms. Scale, performance, and high availability lie at the heart of our projects, and the lessons learned throughout this book will arm you with everything you need to build world-class solutions. You will get a feel for app deployment using Docker and Google App Engine. Each project could form the basis of a start-up, which means they are directly applicable to modern software markets.
Table of Contents (19 chapters)
Go Programming Blueprints Second Edition
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface

Tell the authorization providers about your app


Before we ask an authorization provider to help our users sign in, we must tell them about our application. Most providers have some kind of web tool or console where you can create applications to kick this process off. Here's one from Google:

In order to identify the client application, we need to create a client ID and secret. Despite the fact that OAuth2 is an open standard, each provider has their own language and mechanism to set things up. Therefore, you will most likely have to play around with the user interface or the documentation to figure it out in each case.

At the time of writing, in Google Cloud Console, you navigate to API Manager and click on the Credentials section.

In most cases, for added security, you have to be explicit about the host URLs from where requests will come. For now, since we're hosting our app locally on localhost:8080, you should use it. You will also be asked for a redirect URI that is the endpoint in our...