This presentation was part of EXPERTALKS: Apr 2012 conducted at Equal Experts India on 21st Apr 2012. Visit http://meetup.com/expertalks to know more... ------------------------------------------------------------------------------------- This presentation discusses the concept of Continuous Integration (CI). It also focuses on how the tool Jenkins helps achieve CI on web application development projects.

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Continuous Integration
using Jenkins
Vikram Shitole
vshitole@equalexperts.com

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What have you done before?

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Are you familiar with these?
 Dev – The functionality is working on my
machine
 QA – Its not working on my machine :(

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Are you familiar with these?
 Dev – I have taken the updates and the code
is not compiling
 Team – no idea :(

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Are you familiar with these?
 QA – This functionality is not working
 Dev – I have checked yesterday, It was
working.
 QA – But not now

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Are you familiar with these?
 BA/Product Owner – Can I see the current
application ?
 Dev/QA – Give us some time

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Are you familiar with these?
 Architect – Don't worry about integrating to a
third part service now, will look at it before
releasing it
 Dev – As you say

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Are you familiar with these?
 QA – Application is very flaky, it suddenly
stops working
 Team – ?

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What solves all these problems ?
Continuous Integration !!!

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Continuous Integration -
Cycle

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Continuous Integration –
Best Practices
 Maintain a code repository
 Automate the build
 Make the build self-testing
 Every commit should be built
 Keep the build fast
 Test in a clone of a production environment
 Everyone can see the results of the latest build
 Automate deployment

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Advantages
 Developer detect and fix integration problem
continuously
 Early warning of broken/incompatible code
 Early warning of conflicting changes
 Immediate unit testing of all changes
 Constant availability of a “current” build for
testing/demo/release
 Useful metrics generated – e.g. code coverage

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Jenkins

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Jenkins for Continuous
Integration
 Open Source
 Easy to install
 Easy to use
 Multi-technology
 Multi-platform
 Widely used
 Extensible
 Free

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Jenkins for a Developer
 Easy to install
 Download one file – jenkins.war
 Run one command – java –jar jenkins.war
 Easy to use
 Create a new job – checkout and build a small project
 Checkin a change – watch it build
 Create a test – watch it build and run
 Fix a test – checkin and watch it pass
 Multi-technology
 Build C, Java, C#, Python, Perl, SQL, etc.
 Test with Junit, Nunit, MSTest, etc.

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More Power – Jenkins Plugins
 Software configuration management
 Builders
 Test Frameworks
 Notifiers
 Static Analyzers

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Jenkins Plugins - SCM
Version Control Systems
 Accurev
 Bazaar
 BitKeeper
 ClearCase
 Darcs
 Dimensions
 Git
 Harvest
 MKS Integrity
 PVCS
 StarTeam
 Subversion
 Team Foundation Server
 Visual SourceSafe

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Jenkins Plugins – Analyzers
Static Analysis
 Checkstyle
 CodeScanner
 DRY
 Crap4j
 Findbugs
 PMD
 Fortify
 Sonar
 FXCop
Code Coverage
 Emma
 Cobertura
 Clover
 GCC/GCOV

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Jenkins Plugins – Other Tools
Notification
 Twitter
 Campfire
 Google Calendar
 IM
 IRC
 Lava Lamp
 Sounds
 Speak
Authorization
 Active Directory
 LDAP
Virtual Machines
 Amazon EC2
 VMWare
 VirtualBox
 Xen
 Libvirt

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Thank You !!!
Vikram Shitole
vshitole@equalexperts.com