Multi-Module Maven with github pages

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Motivation

The issues

led to the creation of the example project:

in which the github maven site plugin is defined with the configuration 

<!-- git hub site plugin https://github.com/github/maven-plugins -->
<plugin>
  <groupId>com.github.github</groupId>
  <artifactId>site-maven-plugin</artifactId>
  <version>${site-maven-plugin.version}</version>
  <configuration>
    <message>Creating site for ${github.owner} ${github.project}
      ${project.version}</message>
    <repositoryName>${github.project}</repositoryName>      <!-- github repo name -->
    <repositoryOwner>${github.owner}</repositoryOwner>    <!-- github username -->
  </configuration>
  <executions>
    <execution>
      <goals>
        <goal>site</goal>
      </goals>
      <phase>site</phase>
    </execution>
  </executions>
</plugin>

Following the suggestion of https://stackoverflow.com/a/19336536/1497139 led to adding 

  <distributionManagement>
    <site>
      <id>${project.artifactId}-site</id>
      <url>${project.baseUri}</url>
    </site>
  </distributionManagement>

to the parent pom.xml 

mvn clean site 
... wait a long while ...

[INFO] Multi-Module ....................................... SUCCESS [04:22 min]
[INFO] Multi-Module 1 ..................................... SUCCESS [04:09 min]
[INFO] Multi-Module 2 ..................................... SUCCESS [04:09 min]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 12:42 min

and you end up with Module 2 overriding the results of the Multi-Module and Module 1 results

Is it a bug or a feature?

Whats the work-around?

Do not use the plugin!

mkdir -p /tmp/stage/4site
mvn -U clean install site site:stage -DstagingDirectory=/tmp/stage/4site
[INFO] --- maven-site-plugin:3.7.1:stage (default-cli) @ multimodule2 ---
[INFO] Using this base directory for staging: /tmp/stage/4site
[INFO] Pushing /Users/wf/Documents/workspace/com.bitplan.multimodule/multimodule-module2/target/site
[INFO]    >>> to file:///tmp/stage/4site/../multimodule2/com.bitplan.multimodule/multimodule2
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] Multi-Module ....................................... SUCCESS [  5.423 s]
[INFO] Multi-Module 1 ..................................... SUCCESS [  4.043 s]
[INFO] Multi-Module 2 ..................................... SUCCESS [  3.393 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 13.665 s

Yes - thats right seconds not minutes!

get a local stage of gh-pages yourself

 git clone https://github.com/$owner/$project --branch gh-pages --single-branch

Experimenting with distributionManagement.url settings

/project/distributionManagement/site/url=${project.baseUri}
[INFO] Pushing /Users/wf/Documents/workspace/com.bitplan.multimodule/target/site
[INFO]    >>> to file:///tmp/stage/4site/../com.bitplan.multimodule/com.bitplan.multimodule
[INFO] Pushing /Users/wf/Documents/workspace/com.bitplan.multimodule/multimodule-module1/target/site
[INFO]    >>> to file:///tmp/stage/4site/../com.bitplan.multimodule/multimodule-module1/com.bitplan.multimodule/multimodule1
[INFO] Pushing /Users/wf/Documents/workspace/com.bitplan.multimodule/multimodule-module2/target/site
[INFO]    >>> to file:///tmp/stage/4site/../com.bitplan.multimodule/multimodule-module2/com.bitplan.multimodule/multimodule2

Example pom.xml files

Stackoverflow questions

Links

Documentation

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