Book Image

Git Version Control Cookbook - Second Edition

By : Kenneth Geisshirt, Emanuele Zattin(EUR), Aske Olsson, Rasmus Voss
Book Image

Git Version Control Cookbook - Second Edition

By: Kenneth Geisshirt, Emanuele Zattin(EUR), Aske Olsson, Rasmus Voss

Overview of this book

Git is one of the most popular tools for versioning. With over 100 practical, self-contained tutorials, this updated version of the bestselling Git Version Control Cookbook examines the common pain points and best practices to help you solve problems related to versioning. Each recipe addresses a specific problem and offers a proven, best-practice solution with insights into how it works. You’ll get started by learning about the Git data model and how it stores files, along with gaining insights on how to commit changes to a database. Using simple commands, you’ll also understand how to navigate through the database. Once you have accustomed yourself to the basics, you’ll explore techniques to configure Git with the help of comprehensive examples and configuration targets. Further into the book, you’ll get up to speed with branches and recovery from mistakes. You’ll also discover the features of Git rebase and how to use regular Git to merge other branches. The later chapters will guide you in exploring Git notes and learning to utilize the update, list, and search commands. Toward the concluding chapters, you’ll focus on repository maintenance, patching, and offline sharing. By the end of this book, you’ll have grasped various tips and tricks, and have a practical understanding of best-practice solutions for common problems related to versioning.
Table of Contents (19 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Triggering Jenkins builds


When you create a Jenkins job, how will Jenkins know when it's time to build a specific branch or pull request? Jenkins offers many ways to do this, from continuously building based on a timer, to polling the Git repository to see if anything changed. Both of these options are not very efficient, but luckily GitHub allows for a better solution.

GitHub has the concept of Webhooks, which means that it can be configured to contact a server, such as our Jenkins instance, when something important happens.

There are many ways to achieve the goal, but in this recipe we will focus on one approach, which is going to be helpful especially in an enterprise environment where a GitHub organization is used, containing several repositories. Managing a single job or more per repository can quickly become a repetitive chore and that is where the GitHub Branch Source plugin comes into play.

Getting ready

We are going to need a Jenkins instance so the same preparatory steps as the previous...