Commit timestamp in Maven version using jgitver

Question

I'm evaluating the jgitver Maven extension for calculating artefact versions from git metadata.

jgitver provides the commit datetime in a property called jgitver.head_commit_datetime, but I can't figure out how to include the timestamp in the version string.

Can anyone help?

Answer 1

@otto.poellath, you can use the configuration property useGitCommitTimestamp and set it to true ; it is only available in the non maven mode of jgitver as it is a bit clashing with strict maven SNAPSHOTs.

So if you have your .mvn/jgitver.config.xml config file that contains something like the following it will work:

<mavenLike>false</mavenLike>
<useGitCommitTimestamp>true</useGitCommitTimestamp>

Here is an output of a local mvn validate on jgitver-maven-plugin itself using such a configuration

H:\jgitver-maven-plugin>mvn validate
[INFO] using jgitver configuration file: H:\jgitver-maven-plugin\.mvn\jgitver.config.xml
[INFO] Scanning for projects...
[INFO] Using jgitver-maven-plugin [1.3.0] (sha1: ef8eec9f820d662e63a84f1210c377183e450cbd)
[INFO] jgitver-maven-plugin is about to change project(s) version(s)
[INFO]     fr.brouillard.oss::jgitver-maven-plugin::0 -> 1.3.1-20180710075533-integration
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building jgitver Maven Plugin 1.3.1-20180710075533-integration
[INFO] ------------------------------------------------------------------------
...

Answer 2

Thanks to maven lazy evaluation, you can provide them into the build using the versions plugin, something like:

mvn jgitver versions:set -DnewVersion=1.0.\${jgitver.head_commit_datetime} versions.commit

Try that and let me know.

It basically pass the property onto the versions:set plugin, and this will rewrite all pom files to the given new version.