ci presentacion

Eric Pugh Richmond

CI Presentation

January 14th, 2009

Continuous Integration RICHMOND, January 14th, 2009

Principal of OpenSource Connections

Contributer to CruiseControl

Member of Apache Software Foundation

Presenter at many conferences including OSCON, ApacheCON, jTDS

Fascinated by the art of software development

¿Who am I?

Continuous Integration RICHMOND, January 14th, 2009

¿What are we talking about?

¿What is CI?

¿Why does it matter to me?

¿What do I need to use CI?

Demonstration of Hudson

¡Questions!

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Continuous Integration RICHMOND, January 14th, 2009

¿What is Continous Integracion?

http://martinfowler.com/articles/continuousIntegration.html

From Martin Fowler:

“a fully automated and reproducible build, including testing, that runs many times a day”.

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Continuous Integration RICHMOND, January 14th, 2009

Rapid Feedback

< 10 minutos

Continuous Integration RICHMOND, January 14th, 2009

¿How is CI important to different members of a team?

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Continuous Integration RICHMOND, January 14th, 2009

Life of a programmer without CI...

Unstable code, integration is difficult

Many build errors reported

Only one person on the team can build the entire project

Demonstrations require extensive planning

Feedback cycle is long

Every day is a struggle to be productive

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Continuous Integration RICHMOND, January 14th, 2009

Life of a programmer with IC...

The build process is simple and repeatable

Elimination of Human Error

Demo’s are quick and easy

Feedback cycle is very rapid

¡Every day you know you can code!

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Continuous Integration RICHMOND, January 14th, 2009

For a tester

¿What is in the build?

¿What has changed between builds?

¿How do I verify functionality?

control

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Continuous Integration RICHMOND, January 14th, 2009

For a Project Manager

Visibility

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Continuous Integration RICHMOND, January 14th, 2009

For a Project Manager

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Continuous Integration RICHMOND, January 14th, 2009

For a development team

security

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Continuous Integration RICHMOND, January 14th, 2009

For a development team

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Continuous Integration RICHMOND, January 14th, 2009

For a development team

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Continuous Integration RICHMOND, January 14th, 2009

For a development team

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Continuous Integration RICHMOND, January 14th, 2009

¿What is needed to get started?

A dedicated machine

Source Control

Automated Build Script

Method of notification

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Continuous Integration RICHMOND, January 14th, 2009

¿ What are the challenges to using CI?

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Continuous Integration RICHMOND, January 14th, 2009

Challenge One: Cultural Change

CI needs a champion who acts as the ambassador to the leaders of the organization.

Thoughtleaders in the organization who can help encourage developers to accept the process changes that CI brings

A very successful test case

¿A greenfield project if possible?

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Continuous Integration RICHMOND, January 14th, 2009

Challenge Two: Environmental Difficulties

All the tests should be true unit tests, not integratin tests

Few or no external dependencies

A beefy build server...

A strategy for deploying code into the CI environment

Database changes are SIMPLE

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Continuous Integration RICHMOND, January 14th, 2009

Challenge Three: Project Characteristics

Fewer branches to the code makes life easier

Many small code changes. Code is committed throughout the day.

There are good unit test coverage.

The code is ready for deployment, not in pieces.

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Continuous Integration RICHMOND, January 14th, 2009

Challenge Four: Stability of CI Tool

The CI system must be as well maintained as the Source Control system.

THe CI system can do builds very quickly.

¿Who has responsibility for CI? It’s very important to have a “throat to choke”.

No false alarms. If there are false alarms then the developers lose confidence in the CI system.

✓

X

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Continuous Integration RICHMOND, January 14th, 2009

Demo of Hudson

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Continuous Integration RICHMOND, January 14th, 2009

¿Where to next?

Continuous Integration: Improving Software Quality and Reducing Risk

CIGuys.com (??)

CITConf is the conference for CI. This year April 24, 25 in Minneapolis, MN.

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Continuous Integration RICHMOND, January 14th, 2009

Matrix of 22 differences in CI systems

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http://confluence.public.thoughtworks.org/display/CC/CI+Feature+Matrix

Continuous Integration RICHMOND, January 14th, 2009

¿Why CI?

Eliminate human errors

Tests that run frequently are more valuable

A CI system is the foundation of a project status dashboard

¡Eliminate integration problems!

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Eric Pugh epugh@opensourceconnections.com RICHMOND

January 14th, 2009