Jenkins State of union 2013

Jenkins User Conference Shefayim, Jun 2013 #jenkinsci

Jenkins: State of Union

#jenkinsci

Kohsuke KawaguchiJenkins Creator

kk@kohsuke.org / @kohsukekawa

In Average Week of Jenkins

1 new release comes out

Gets downloaded 48,000 times

That fills up 513 DVDs

3.5 Brand-new Plugins Released

25 New Versions of Plugins Released

Gets downloaded 500,000 times

80 Tickets Filed

50 Tickets Solved

145 Commits Are Made

400 Jenkins Installations Pops Up

1200 New Slaves Are Added

19,000 New Jobs Are Added

# of plugins

Jan-07 Jan-08 Jan-09 Jan-10 Jan-11 Jan-12 Jan-130

# of unique plugins

releases/weeknew plugins/week

Ticket Activities

Total tickets

Resolved tickets

Tracked Installations (conservative)

# of masters

Recently Introduced Featureshttp://www.flickr.com/photos/randar/3879926596/

Lazy loading of build records

• Jenkins slow to start up?– It was loading build records upon boot

• This is finally fixed, including fallouts– Loaded on demand– In weak references

• Now on LTS: 1.509.1

Master/slave performance

• Better sustained data transfer rate– Copy large files, test reports, etc– Now on par with scp

• Classloading improvements– Local cache & prefetching– Will help ephemeral/elastic slaves & maven jobs

Performance/Scalability Improvements

• Lock strength reduction• Fingerprint scalability improvements• Better caching of images & scripts in UI• The “people” page• Handling large test result

Testing Improvements

• Previous testing scheme– Embedded Jetty in Maven– Code from ~/.m2/repository and resources from

war– The setup was different from how you run it

New Blackbox Acceptance Test

• Tests the final deliverables– jenkins.war, .deb, .rpm, etc– With Tomcat, JBoss, or “java -jar jenkins.war”

• In different OSes– In VirtualBox (via vagrant)– Hopefully with EC2 (upcoming)

• Tests via Selenium– Capybara + Cucumber– Sauce OnDemand to test different browsers

Database Plugin

• For other plugins, not for users– But large data set in RDBMS should result in tangible

benefits for users• Provides unified database connectivity– UI for admin to select the backend– Expose DataSource for other plugins– JPA support, per-job database

• Looking for plugins to start using this

Plugins that generate jobs

• Job DSL plugin– Groovy DSL for describing job definitions– DSL can be evaluated from within Jenkins– E.g., automatically generate new jobs for new

branches• Job Generator plugin– Create a new ste of jobs from “template jobs” by

eagerly evaluating some build parameters

Build Flow Plugin

• Groovy DSL for kicking builds– High-level primitives– Ability to define abstractions

b = build(“acme-build”)guard {

parallel ({ build(“acme-test1”,

param1:b.number) },{ build(“acme-test2”,

param1:b.number) })

} rescue {build(“acme-teardown”)

Jenkow Plugin

• Embed BPMN workflow engine in Jenkins– Timeout, fork, join, …

• Workflow is version controlled in Git– Push to Jenkins to load them up

Recipe Plugin

• Sharing a set of jobs and other settings in Jenkins with the community

• Convenient for…– Sample setup / quick start for plugins– Show cases

• Simplify the first “getting started” phase

Parallel Test Executor Plugin

• Split tests N-way, run them in parallel• Create even splits by using timing information

Test Group #1 Test Group #2 Test Group #3

Upcoming Features

Future Direction: Which Way?

http://www.flickr.com/photos/quinnanya/3500158343/

Make Complex Things Doable

• Running big, complex deployment should be easier– Master-to-master communication channel– Per-job database storage, open for plugins

• More automatic slave managements– Better diagnostics

• Access control for running builds

Make Complex Things Doable

• Better Workflow/pipeline support– Already a lot going on in plugins!– Slice up build histories– Shared context between related builds

• Modeling external systems– Databases, test environments, …– Remembering who’s using what– Remember what was done to them

Make Simple Things Simpler

• More spying, less asking– E.g., “where are unit test reports?”

• Simpler project creation ala BuildHive– Only needs to be 70% accurate– Sharable archetypes, repository sniffing

• Encourage sharing of recipes

Help You Find Plugins You Need

• Revisit bundled plugins– Why Git plugin isn’t in there?

• Plugin packs (aka iTunes playlist)– Follow the lead of the Jenkins PHP website

• Recommendation based on what you have• Reviews, feedbacks

More UI Improvements

• FOSDEM-driven on-going effort

• TODO in this round:– Hunt on stale data in HTML– Performance on loading config page– More compact UI controls

Improving Plugin Development Experience

• More extension points• Better Plugin Development Environment– More Wiki articles/samples?– Training course?

• Better development mode– Skeleton generation– Checking common pitfalls in the dev mode

• Tell us what you need!

Conclusions

• A lot has been done, not just in code– And a lot more to come!

• Please help the project• Please enjoy the day!

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