Maven 3 / Tycho

Maven 3 / Tycho
Eclipse and Maven coexisting in harmony

Karsten Thoms
2010-05-10

© itemis AG 2010 – Alle Rechte vorbehalten 1

About me

• Working as consultant for itemis
• Over 10 years experience in Enterprise Java, Model

Driven Software Development
• Open Source enthusiast, MDSD evangelist

• Project (co-)lead: The Fornax Platform, fit4oaw, Hybridlabs
Beautifier
• Committer / Contributor: Eclipse EMFT MWE, M2T Xpand,
openArchitectureWare, Fornax Maven plugin for oAW/MWE,
Fornax UML2 cartridges for oAW, AUTOSAR Tool Platform
(ARTOP)
• Using Maven in my Open Source projects and some
customer projects


Maven Tycho


Example used for Tycho demo

• MP3 Manager
• RCP Example from Kai Tödter

• http://max-server.myftp.org/trac/mp3m


Example RCP Application

• Project types in this application
• Plugins

• Features

• Update Site

• Products

• Product come with different brandings: blue,
orange, german
• Build Target:
• Create ZIP distributions for branded

products


Automated Build for Eclipse/OSGi

• Several frameworks serving this task
• PDE Build

• Buckminster

• Pluginbuilder

• b3

• Athena Common Build Infrastructure

• Often hard to setup, maintain and debug a working headless build
• P2 makes some things better and many worse


Tycho

• Maven extensions for Eclipse / OSGi
• Seamless build for Eclipse artifacts

•
Plugins, Plugin-Tests, Features, Update Sites, Products
• Manifest-first approach
• POM needed for each module, but minimal one

• Tight integration with Equinox / P2

• Proposed as project under the Eclipse Technology

project in April 2010


Eclipse project structure


Maven project structure


Packaging extensions

• Target artifact type is specified with <packaging>
element in pom.xml
• Standard packaging types:

•
pom - jar
•
war - ear
•
...
• Tycho adds Eclipse specific packaging types
•
eclipse-plugin - eclipse-test-plugin
•
eclipse-feature - eclipse-update-site
•
eclipse-application


Target Platform

• Set of plugins and features, against which modules/
projects are built
• Computed seperately for each module

• Configurable via

•
System property
-Dtycho.targetPlatform=<eclipsehome>
•
Repositories in POM with
<layout>p2</layout>
•
Target Platform Definition file (.target) stored in a Maven
repository


Target Platform - Repositories

<repositories>
<repository>
<id>galileo</id>
<layout>p2</layout>
<url>http://download.eclipse.org/
releases/galileo</url>
</repository>
<repository>... </repository>
</repositories>


Repositories

P2 Repository Maven2 Repository


Creating a P2 Repository with Equinox
FeaturesAndBundlesPublisher


Getting started with Tycho

• Get Maven 3 Installation
• Add a pom.xml to each project
• Bootstrap pom.xml creation:
mvn
org.sonatype.tycho:maven-tycho-plugin:generate-poms
-DgroupId=com.siemens.ct.mp3m
-Dversion=3.5.1-SNAPSHOT
-Dtycho.targetPlatform=<path-to-eclipse>


pom.xml bootstrapping


Project coordinates

OSGi Maven / Tycho
Bundle-SymbolicName: <groupId>com.siemens.ct.mp3m</groupId>
com.siemens.ct.mp3m.model <artifactId>mp3m.model</artifactId>

or...

<groupId>com.siemens.ct.mp3m</groupId>
<artifactId>com.siemens.ct.mp3m.model
</artifactId>
Bundle-Version: <version>3.5.1-SNAPSHOT</version>
3.5.1.qualiﬁer

Bundle-Version: <version>3.5.1</version>
3.5.1.qualiﬁer


Packaging: eclipse-plugin


Packaging: eclipse-feature


Packaging: eclipse-update-site


Packaging: eclipse-application


Parent POM

• Aggregates all projects as modules
• Common build settings
• Tycho plugins

• Other Maven plugins

• Repositories

• Target platform

• Target environments

• Usually in the directory „above“ the projects
• This would be the workspace root in Eclipse!


Parent POM


Integration of Tycho
builds into Hudson


Add Maven 3 Installation


Create Free-Style Job


Test drive!


Maven 3


Maven 3

• Complete rework of Maven 2
• Current version 3.0-beta-1
• Really stable already

• Mostly backward compatible
• Important projects developed for Maven 3
• m2eclipse

• Tycho

• Maven Shell

• Polyglot Maven


Maven Shell

• CLI interface, Wrapper for normal shell
• Faster turn-around
• project information always in-memory

• plugins loaded only once


Maven Shell - Execution Time

• Apache Commons Lang 2.5
• Goals: clean package

mvn mvnsh

Polyglot Maven

• Multilanguage support for definition of POMs
• Alternative to XML POM definition
• Supported languages
• Groovy

• Scala

• JRuby

• Clojure

• Xtext external DSL coming up


Polyglot Maven - Original POM


Polyglot Maven - Groovy


Polyglot Maven - Scala


Polyglot Maven - Ruby


Conclusion

• Maven Tycho can make headless Eclipse Builds easy
• Still under development
• Expect some bugs

• Report them!

• Rapid improvement through developers

• Documentation needs to be improved

• Tycho is likely to be the next generation build framework for
Eclipse!
• Don‘t fear upgrading to Maven 3


Resources

• Tycho Homepage
• http://tycho.sonatype.org/
• Tycho Eclipse Project Proposal
• http://www.eclipse.org/proposals/tycho/
• Tycho Tutorials
• http://www.sonatype.com/people/2008/11/building-eclipse-plugins-with-

maven-tycho/
• http://mattiasholmqvist.se/2010/02/building-with-tycho-part-1-osgi-
bundles/
• http://eclipse.dzone.com/news/how-build-xulrunner-1912
• MP3 Manager Example, customized for Tycho
• git://github.com/kthoms/mp3m.git


Resources

• Maven 3 compatibility notes
https://cwiki.apache.org/MAVEN/maven-3x-compatibility-
notes.html
• Maven Shell
http://shell.sonatype.org/
• Polyglot Maven
http://polyglot.sonatype.org
https://docs.sonatype.org/display/PMAVEN/Home
•


KANBAN-Compact with Matthias Bohlen
Location: Top of Cologne, Cologne
Date: September 13th
Time: 14:00 - 18:00
Price : 99 €

Topics covered:
- Introduction to Lean, Pull-Systems and Kanban
- Examples and Casestudies
- Kanban recipe for success: The ingredients
- How to start with Kanban
- How to be more productive with Kanban
- How Kanban and Scrum fit together
Further Informations and Registration:

www.itemis.de/Veranstaltungen


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