Jenkins (War)stories

Toomas RömerZeroTurnaroundTartu, Estonia

@toomasr

Thursday, October 10, 13

Why this talk?

• Logical step from previous unit test topic

• I’m a Jenkins fanboy :)

• Maybe I can inspire you!?

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Thursday, October 10, 13

Why talk about Jenkins?

• First Jenkins installation in 2008– Have administered

– Have used as a developer

– Have developed plugins for it

– Still using daily but more like a manager

– Good friends with Cloudbees people

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Thursday, October 10, 13

What have I done with Jenkins?

Built-tested-released software

Implemented continuous delivery

Updated websites (docs, changelogs etc.)

Propagating code or binary artifacts

Workflow management

Thursday, October 10, 13

Why so popular?

Authentication

Authorization

Logging

Notifications

Distributed

Thursday, October 10, 13

Cron on Steroids

Thursday, October 10, 13

Enterprise Cron

Thursday, October 10, 13

Background - 2013

300 600 jobs

8 20 dedicated machines

Amazon ~7000 instance-hour per month

3 4 in house plugins developed, 2 abandoned

Custom dashboard (35 x 215 grid)

Thursday, October 10, 13

Jenkins Overlords

• Jenkins Overlord– Actually his name is Juri

• Each project has a goto guy– Works with Juri when something

bad happens, also known as an Overlord :)

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Thursday, October 10, 13

Stories

Stories–Managing the cluster– Functional Tests–Servlet Tests– The API–Random thoughts

Thursday, October 10, 13

Managing the cluster

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Thursday, October 10, 13

Managing the cluster

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Thursday, October 10, 13

Managing the cluster

• Lots of projects but 1 Jenkins cluster– Java– Application server X– Database server X– Framework X– PHP/Python/Groovy/SBT/Maven– Play Framework– Android– Eclipse– ....

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Thursday, October 10, 13

Managing the cluster

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Thursday, October 10, 13

Managing the cluster

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Thursday, October 10, 13

Functional Tests

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JRebel Functional JDK Tests

Thursday, October 10, 13

JRebel Functional JDK Tests

Thursday, October 10, 13

JRebel Functional JDK Tests

Per JDK– Per functional test

• Compile couple of classes• Run some methods and assert• Recompile couple of classes• Run some methods and assert• …

Thursday, October 10, 13

JRebel Functional JDK Tests

Which Jenkins feature is the best fit here?

Thursday, October 10, 13

JRebel Functional JDK Tests

Thursday, October 10, 13

JRebel Functional JDK Tests

Groovy Script

Thursday, October 10, 13

JRebel Functional JDK Tests

Thursday, October 10, 13

JRebel Functional JDK Tests

How to get test results? Jenkins feature…

Thursday, October 10, 13

JRebel Functional JDK Tests

Output JUnit XML!

Thursday, October 10, 13

JRebel Functional JDK Tests

Thursday, October 10, 13

Jenkins API

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Thursday, October 10, 13

API

• Java/JavaScript/Python and others

• Super easy to get started (show demo)

• Retrieve info about Jenkins

• Trigger builds

• Create/copy jobs

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Custom Dashboard

Thursday, October 10, 13

Random thoughts

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There is an app plugin for that

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Green Balls

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Green Balls

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Prep releases

Thursday, October 10, 13

Q & A

Thursday, October 10, 13