java maven build properties bundler thingymadoodle

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>bazile</groupId>
    <artifactId>test-build-props</artifactId>
    <version>0.0.0</version>

    <properties>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>3.0.0</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>exec</goal>
                        </goals>
                        <phase>process-resources</phase>
                    </execution>
                </executions>
                <configuration>
                    <executable>src/main/scripts/props.sh</executable>
                    <environmentVariables>
                        <VERSION>${project.version}</VERSION>
                    </environmentVariables>
                    <outputFile>target/classes/build.properties</outputFile>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

src-main-scripts-props.sh

#!/bin/bash

set -e

cd "$(dirname $0)"


cat <<-EOT
	commit.author=$(git log -1 --format='format:%an <%ae>')
	commit.branch=$(git branch --show-current)
	commit.sha=$(git log -1 --format='format:%H')
	commit.tag=$(git describe --tags 2>/dev/null)
	commit.time=$(git log -1 --format='format:%cI')
	id=${BUILD_NUMBER:-0}
	host=$(hostname --fqdn)
	time=$(date --iso-8601=seconds)
	user=$USERNAME
	version=${VERSION:-$(mvn -B -q help:evaluate -Dexpression=project.version -DforceStdout)}
EOT

test output

$ mvn compile

[INFO] Scanning for projects...
[INFO] 
[INFO] ----------------------< bazile:test-build-props >-----------------------
[INFO] Building test-build-props 0.0.0
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ test-build-props ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /home/david/src/test-git-props/src/main/resources
[INFO] 
[INFO] --- exec-maven-plugin:3.0.0:exec (default) @ test-build-props ---
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ test-build-props ---
[INFO] Nothing to compile - all classes are up to date
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.881 s
[INFO] Finished at: 2021-02-06T17:20:10-05:00
[INFO] ------------------------------------------------------------------------

$ cat -n target/classes/build.properties

     1	commit.author=David Bazile <dbazile@users.noreply.github.com>
     2	commit.branch=master
     3	commit.sha=3c9f6233fd5c92b9bb841b06b0d6db44cded3b59
     4	commit.tag=
     5	commit.time=2021-02-06T15:43:47-05:00
     6	id=0
     7	host=kefka.narshe
     8	time=2021-02-06T17:20:09-05:00
     9	user=david
    10	version=0.0.0

...I am aware of this... >_>