How to add a version number to your hudson-built maven jar

Maven’s jar plugin will automatically add a “pom.properties” in your jar’s META-INF/maven/$groupId/$artifactId directory. If you build with hudson, there are a number of other values that you might want to include automatically, though, like the SVN revision number that the artifact was built from, and when it was built.

Here’s the configuration for the maven-jar-plugin that adds a couple of the more-interesting hudson variables to your module’s jar’s META-INF/MANIFEST.MF:

[xml highlight="12,13,14,15"]
<project>
…
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.2</version>
<configuration>
<archive>
<manifestEntries>
<Svn-Revision>${SVN_REVISION}</Svn-Revision>
<Build-Tag>${BUILD_TAG}</Build-Tag>
<Build-Number>${BUILD_NUMBER}</Build-Number>
<Build-Id>${BUILD_ID}</Build-Id>
</manifestEntries>
</archive>
</configuration>
</plugin>

[/xml]

The Maven Guide to Working with Manifests and Maven Archiver pages, along with the other hudson variables may prove helpful.

Update December 14, 2009:

Note that Hudson’s SVN_REVISION macro is empty if you build your project as a maven multi-module.

Related posts:

1. How to add a version number to your maven webapp
   I couldn’t find a simple recipe to add a version number to a maven-built webapp. The maven-war-plugin talks about how to filter, but no simple example is given. So. I’ll......
2. How to increase maven heapspace in hudson builds
   If your maven-built project fails in hudson (especially when you’re using the assembly plugin) and it isn’t a compile or test failure, check the console output. If it says “java.lang.OutOfMemoryError:......
3. How to set up your Maven2 POM to support Java5
   Seeing this? [bash highlight="3,4"] $ mvn compile … generics are not supported in -source 1.3 (try -source 1.5 to enable generics) [/bash] You need to tell the maven-compiler-plugin to use......
4. Getting started with Hudson
   Hudson is a slick, stable, and easy to install continuous integration environment. You’ll be using it in minutes. Honest. Install Java Hudson is a java webapp. Ubuntu comes with Sun’s......