Jenkins User Conference Jenkins User Conference San Francisco, Sept #jenkinsconf Take Control. Write a Plugin. Part II Baruch Sadogursky JFrog

About me Developer Job definition: Write code Talk about it

With Jenkins from day 1 Jenkins Artifactory Plugin Hosted JUC Israel repo.jenkins-ci.org JavaOne DEMOzone JFrog & Jenkins

Vote and guessing Working with remote agents Working in multiple operation systems Creating UI using Groovy Writing custom Jelly(?) tags Maintaining backwards compatibility Agenda

Vote and guessing Working with remote agents Working in multiple operation systems Creating UI using Groovy Writing custom Jelly(?) tags Maintaining backwards compatibility Agenda

Who saw “Take Control. Write a Plugin” session on YouTube?“Take Control. Write a Plugin” session on YouTube Let me guess… one or two hands… First, let’s vote

PREVIOUSLY IN “TAKE CONTROL. WRITE A PLUGIN”… “Hello, my name is Noam Tenne”

What you can do with plugins What you can’t do with plugins Plugins statistics Overview – Why plugins

UI SCM Build Processes Slave management Tooling... Many, many, more You can even create new extension points! What can I extend?

IDE All majors have good support We love IntelliJ IDEA Build tool Can be Maven or Gradle Environment

Target: Rewarding failing builds with insulting mockery Global configuration: Motivation phrase Project configuration: Is motivator enabled Outcome: Message appears in log after failure The “Motivation” Plugin

BACK TO OUR AGENDA Nowdays…

Vote and guessing Working with remote agents Working in multiple operation systems Creating UI using Groovy Writing custom Jelly(?) tags Maintaining backwards compatibility Agenda

Jenkins has remote agents! Working with remote agents

Send closures to remote agents hudson.remoting.Callable Working with remote agents Java Serialization

Poor guy’s Java closure Usually anonymous inner class (not always) Closure

Channel? Cast your bread on the waters

Represents a communication channel to the remote peer Obtain from: Channel

Where is the file? Distribution Abstractions – FilePath

hudson.FilePath Much like java.util.File Consider pushing logic to the file Use FilePath.act(FileCallable) Distribution Abstractions – FilePath

Launch stuff remotely! Distribution Abstractions – Launcher

hudson.Launcher Much like java.lang.ProcessBuilder Pick your environment variables wisely! Distribution Abstractions – Launcher

Vote and guessing Working with remote agents Working in multiple operation systems Creating UI using Groovy Writing custom Jelly(?) tags Maintaining backwards compatibility Agenda

WORA. You know. But. / vs \.sh vs. bat Quotes around commands Permissions (wait for it…) Working in multiple OSs

Executing file… remotely… platform independent… Running script…

Can You Spot The Error? Executed locally!

Use FilePath – it will take care of all the details! Execute FilePath.act(FileCallable) If you need the File API, invoke() method has it, converted to remote file properly Going Remote with File

Permissions Dance

Vote and guessing Working with remote agents Working in multiple operation systems Creating UI using Groovy Writing custom Jelly(?) tags Maintaining backwards compatibility Agenda

First, let’s look at the docs: Creating UI using Groovy

Analogous to Jelly Can use Jelly tags and libraries Kohsuke: Creating UI using Groovy WhenWhat Lots of program logicGroovy Lots of HTML layout markupJelly

Analogous to Jelly Can use Jelly tags and libraries me: Creating UI using Groovy WhenWhat Always!Groovy

Jelly: Groovy: Creating UI using Groovy

Real code Debuggable, etc. (stay tuned…)

Vote and guessing Working with remote agents Working in multiple operation systems Creating UI using Groovy Writing custom Jelly(?) tags Maintaining backwards compatibility Agenda

Documentation: Writing custom Jelly(?) tags

Simple as 1,2… that’s it. Writing custom Jelly Groovy tags

1. Implement

2. Use!

Vote and guessing Working with remote agents Working in multiple operation systems Creating UI using Groovy Writing custom Jelly(?) tags Maintaining backwards compatibility Agenda

Back to Motivation plugin… Maintaining backwards compatibility

Rename defaultMotivatingMessage to motivatingMessage What happens to existing configuration on users machines? Refactoring!

Register field (or class) alias In Initializer that runs before plugins started More complex cases might reqiure XStream converter XStream Aliasing To The Rescue

See you at our DEMOzone! Thank you!

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