Maven exec bash script and save output as property - maven

Question

I'm wondering if there exists a Maven plugin that runs a bash script and saves the results of it into a property.
My actual use case is to get the git source version. I found one plugin available online but it didn't look well tested, and it occurred to me that a plugin as simple as the one in the title of this post is all I need. Plugin would look something like:
<plugin>maven-run-script-plugin>
<phase>process-resources</phase> <!-- not sure where most intelligent -->
<configuration>
<script>"git rev-parse HEAD"</script> <!-- must run from build directory -->
<targetProperty>"properties.gitVersion"</targetProperty>
</configuration>
</plugin>
Of course necessary to make sure this happens before the property will be needed, and in my case I want to use this property to process a source file.

Answer 1

I think you could utilize gmaven plugin for this task:
<plugin>
<groupId>org.codehaus.gmaven</groupId>
<artifactId>gmaven-plugin</artifactId>
<version>1.4</version>
<executions>
<execution>
<phase>initialize</phase>
<goals>
<goal>execute</goal>
</goals>
<configuration>
<properties>
<script>git rev-parse HEAD</script>
</properties>
<source>
def command = project.properties.script
def process = command.execute()
process.waitFor()
project.properties.gitVersion = process.in.text
</source>
</configuration>
</execution>
</executions>
</plugin>
After execution of this script you should be able to refer to ${gitVersion} property.