Many new contributors may hesitate to contribute to a Jenkins plugin. They may be concerned that the time commitment is too great. They may be worried that they lack the technical skills to maintain a plugin. They may not feel adequate to handle issues related to a Jenkins plugin. This blog post introduces the "Improve a plugin" developer tutorial for new contributors. The tutorial is a result of the...

Introduction The Jenkins project is committed to delivering a world-class platform experience for end users and developers alike. At the core of this experience is Java, an object-oriented programming language with a cross-platform runtime in the form of the Java virtual machine (JVM). Since its inception, the Jenkins project has been a major consumer of Java, distributing over 1,800 plugins to an installed base of over 300,000...

Since 2005, the Google Summer of Code program has connected 18,000+ new open source contributors from 112 countries with 17,000+ mentors from 118 countries. Google Summer of Code has produced over 40 million lines of code for 746 open source organizations. The Jenkins project has been a mentoring organization for five years, successfully mentored 27 GSoC students by ~80 mentors, not to mention countless numbers of proposed and...

I regularly go, as all Jenkins admin do, to my system’s Plugin Management page to see what plugins can be upgraded. Although I am running the latest LTS version, I can’t update some key plugins (for example the JUnit plugin). This is even more intriguing as some are part of the plugins installed by default by the setup wizard. No "install" tick box and the plugin is...

Google Summer of Code (GSoC) is a global, online mentoring program focused on introducing new contributors to open source software development. GSoC contributors work on a 12+ week programming project with the guidance of mentors from their open source organization. During GSoC, participating contributors are paired with mentors from open source organizations, gaining exposure to real-world software development techniques. GSoC contributors will learn from experienced open source...

This year, the Duchess community embraced a new challenge: working on women’s presence in Open Source while participating in Jenkins during the Hacktoberfest, a yearly event. Huge congrats to all the contributors! 🥳 Note: This blog is a translation, the source blog post is located here https://www.duchess-france.org/duchess-hacktoberfest-2021/ Anne-Laure Gaillard Interview Hello Anne-Laure, can you introduce yourself? LinkedIn After a PhD in Computer Science and a few years in Software Development, I...

Summary Jenkins bundles Guava, a core Java library from Google. Beginning with Jenkins 2.320 (released on November 10, 2021), Jenkins has upgraded the Guava library from 11.0.1 (released on January 9, 2012) to 31.0.1 (released on September 27, 2021). Plugins have already been prepared to support the new version of Guava in JEP-233. Use the Plugin Manager to upgrade all plugins before and after upgrading to Jenkins 2.320. Motivation Many security-conscious organizations...

Keeping up with our goal to clean up some of the technical debt inside Jenkins Core and reduce the maintenance overheads, we are happy to report we were able to remove a long-deprecated Apache Commons Digester library. Jenkins Core does not depend anymore on Apache Commons Digester v.2.1, a version that has been released in 2010. Some plugins will require update to operate properly after the...

Google Summer of Code (GSoC) is a program where students are paid a stipend by Google to work on a free open source project. Students work on the project for three months (June to August). Prior to the coding phase, there is a month of community bonding, to welcome students to the Jenkins community and acquaint them with the projects processes for communication and collaboration. Mentors are actively...

Cleaning up technical debt is a perennial topic among Jenkins core developers, and one of the most visible issues is the use of obsolete and/or forked third-party libraries. In a world where Dependabot is offering updates to libraries released just hours before, it is unpleasant to be working with dependencies that are many years old. Since large organizations in particular are unhappy to install software using obsolete or...