Book Image

Extending Jenkins

By : Donald Simpson
Book Image

Extending Jenkins

By: Donald Simpson

Overview of this book

Jenkins CI is the leading open source continuous integration server. It is written in Java and has a wealth of plugins to support the building and testing of virtually any project. Jenkins supports multiple Software Configuration Management tools such as Git, Subversion, and Mercurial. This book explores and explains the many extension points and customizations that Jenkins offers its users, and teaches you how to develop your own Jenkins extensions and plugins. First, you will learn how to adapt Jenkins and leverage its abilities to empower DevOps, Continuous Integration, Continuous Deployment, and Agile projects. Next, you will find out how to reduce the cost of modern software development, increase the quality of deliveries, and thereby reduce the time to market. We will also teach you how to create your own custom plugins using Extension points. Finally, we will show you how to combine everything you learned over the course of the book into one real-world scenario.

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Extending Jenkins
Donald Simpson
Dec, 2015 | 152 pages
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Table of Contents (16 chapters)
Extending Jenkins
Extending Jenkins
Credits
Credits
About the Author
About the Author
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Preparatory Steps
Preparatory Steps
Getting started with Jenkins
Extending the basic setup
Jenkins evolution
Continuous Integration with Jenkins
Summary
2
Automating the Jenkins UI
Automating the Jenkins UI
Use case scenario 1 – a large number of jobs
Use case scenario 2 – multiple hosts
Use case scenario 3 – helping your users through UI automation
Use case scenario 4 – UI tweaks
Summary
3
Jenkins and the IDE
Jenkins and the IDE
Eclipse and Mylyn
Installing Mylyn
IntelliJ IDEA and Jenkins build connectors
NetBeans
Summary
4
The API and the CLI
The API and the CLI
Creating an Information Radiator with the Jenkins XML API
Getting the information from Jenkins
Automating the job
Radiating the information
Jenkins as a web server – the userContent directory
The Jenkins CLI
Summary
5
Extension Points
Extension Points
A brief history of Jenkins plugins
Interfaces
Abstract classes
Abstraction and interfaces
Singletons
Declaring an extension in Jenkins
Summary
6
Developing Your Own Jenkins Plugin
Developing Your Own Jenkins Plugin
An introduction to Maven
Installing Maven
Summary
7
Extending Jenkins Plugins
Extending Jenkins Plugins
Where to start?
Looking at the list of existing plugins
A new build type required
Loading and building our starting point
The Builder class and Stapler
Jelly and Jenkins
Help
Properties files and Messages
The POM file
Plugin progress
Summary
8
Testing and Debugging Jenkins Plugins
Testing and Debugging Jenkins Plugins
Running tests with Maven
Debugging Jenkins
The Jenkins Logger Console
Summary
9
Putting Things Together
Putting Things Together
The Jenkins script console and Groovy
Groovy and Gradle as alternatives
Jenkins and Docker
Jenkins and Android
Jenkins and iOS
Keeping your Jenkins version and plugins up to date
Summary
Index
Index

Jenkins as a web server – the userContent directory

You can even get Jenkins to act as a simple web server and host the web page we created for you—if you copy the file that is produced by the job to the userContent directory that is within your JENKINS_HOME location on the system that runs your Jenkins instance, you will see the file appear at this URL: http://myjenkins:8080/userContent

This should look as follows:

Clicking on the inforad.html link will give you the following page—our very simple DIY Information Radiator:

This simple exercise illustrates how you can query Jenkins via the API to retrieve and consume information in real time.

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