Maven Shade plugin configuration to create uber jar containing just the submodules based in the same groupId

Having the following situation:

• STS
• Java
• Maven

Machine One

workspace-01

the Java app with Maven is based for a single module.
It is installed (mvn install) in the repository and the master-project.jar file in other Machine is installed and used for other project how

<dependency>
  <groupId>com.manuel.jordan</groupId>
  <artifactId>master-project</artifactId>
  <version>0.0.1.SNAPSHOT</version>
</dependency>

Until here all work fine

workspace-02

The app grew up and in other workspace the app was migrated to work with multi-modules

Lets assume the following structure for simplicity

master-project (<packaging>pom</packaging>)
alpha (<packaging>jar</packaging>)
beta (<packaging>jar</packaging>)
numbers (<packaging>pom</packaging>)
   one (<packaging>jar</packaging>)
   two (<packaging>jar</packaging>)
countries (<packaging>pom</packaging>)
   Europe (<packaging>pom</packaging>)
      France (<packaging>jar</packaging>)
      Italy (<packaging>jar</packaging>)
   AmericaLatina (<packaging>pom</packaging>)
      Peru (<packaging>jar</packaging>)
      Argentina (<packaging>jar</packaging>)

I am able to compile all these modules. Therefore build success

Goal

Now the goal is generate the same master-project.jar file including the sub modules how internal jars.

After to do a research the solution is: maven-shade-plugin

• What is the maven-shade-plugin used for, and why would you want to relocate Java packages?

I have the following configuration (part of it) using how reference the following links and other sources:

• Create JAR file as Aggregation in maven multi module package

Therefore:

  <modelVersion>4.0.0</modelVersion>
  <packaging>pom</packaging>  <--- it is the main or root pom.xml file

  <groupId>com.manuel.jordan</groupId>
  <artifactId>master-project</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <properties>
    ....
  </properties>

  <dependencies>
  	<dependency>
  		<groupId>com.hazelcast</groupId>
  		<artifactId>hazelcast-all</artifactId>
  		<version>${hazelcast.version}</version>
  		<scope>provided</scope> <!-- Otherwise each uber jar within each submodule is 11.6MB -->
  	</dependency>
  </dependencies>

  <modules>
  	<module>...</module>
    ...
  </modules>

  <build>
  	<plugins>
      ....
  	  <plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-shade-plugin</artifactId>
			<version>3.2.4</version>
			<executions>
				<execution>
					<id>create-fat-jar</id>
					<phase>package</phase>
					<goals>
						<goal>shade</goal>
					</goals>
					<configuration>
						<artifactSet>
							<includes>
								<include>com.manuel.jordan</include>
							</includes>
						</artifactSet>
					</configuration>
				</execution>
			</executions>
		</plugin>
  	</plugins>
  </build>

With the current configuration happens the following:

For each module within the target directory:

• With <packaging>pom</packaging> generates a .pom file
• With <packaging>jar</packaging> generates two .jar files, one of the sub module itself and other of the uber jar (yes for each module)

Goal: what is the extra or missing configuration to generate something like this:

master-project.jar containing
 module1.jar
 module2.jar
 ...
 module3.jar

Where each module# have the same <groupId>com.manuel.jordan</groupId> declaration, that's why I declared

<configuration>
   <artifactSet>
      <includes>
         <include>com.manuel.jordan</include>
      </includes>
   </artifactSet>
</configuration>

And observe that the root/main pom.xml file has <packaging>pom</packaging>

Goal

Therefore the goal is that the other project located in the other machine keeps in peace

<dependency>
  <groupId>com.manuel.jordan</groupId>
  <artifactId>master-project</artifactId>
  <version>0.0.1.SNAPSHOT</version>
</dependency>

Thus it does not matter if the master-project project is either single or multi-module

You could make a packaging jar module below your master-project with a dependency to the other modules, and include only there the shade plugin configuration