[MINSTALL-191] Metadata for submodules seems to be incomplete

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-M1, 3.0.0, 3.1.0, 3.1.1
• Component/s: install:install

Environment

Apache Maven 3.8.8 (4c87b05d9aedce574290d1acc98575ed5eb6cd39)
Java version: 11.0.18, vendor: Eclipse Adoptium
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "5.15.0-83-generic", arch: "amd64", family: "unix"

• Assignee: Unassigned
• Reporter: Dorian Vallant
• Created: 15/Sep/23 07:54
• Updated: 14/Aug/24 14:34
• Resolved: 14/Aug/24 14:34

Description

maven-install-plugin 3.x (and maven-deploy-plugin 3.x too) seems to have a bug when generating maven-metadata-*.xml for submodules containing custom maven-plugins.
With version 2.5.2 maven-install-plugin generates the local metadata as follows:

<?xml version="1.0" encoding="UTF-8"?>
<metadata>
  <groupId>at.dvallant.maven</groupId>
  <artifactId>plugins</artifactId>
  <versioning>
    <versions>
      <version>0.1.0-SNAPSHOT</version>
    </versions>
    <lastUpdated>20230831082036</lastUpdated>
  </versioning>
  <plugins>
    <plugin>
      <name>my-maven-plugin</name>
      <prefix>my</prefix>
      <artifactId>my-maven-plugin</artifactId>
    </plugin>
  </plugins>
</metadata>

 
After upgrading to 3.1.1 (also testet with 3.0.0-M1, 3.0.0 and 3.1.0) the generated file looks this:

<metadata>
  <groupId>at.dvallant.maven</groupId>
  <artifactId>plugins</artifactId>
  <versioning>
    <versions>
      <version>0.1.0-SNAPSHOT</version>
    </versions>
    <lastUpdated>20230831082207</lastUpdated>
  </versioning>
</metadata>

A test-project to reproduce the issue is attached.

To reproduce build the project by calling `mvn clean install` and then check the contents of `~/.m2/repository/at/dvallant/maven/plugins/maven-metadata-local.xml`.

If you downgrade the version to 2.5.2, metadata generation works as expected.

If you could give me a hint where the problem might be in the code I can try to fix it and open a pull request.

Issue Links

• is fixed by: MNG-8106 Maven Metadata corruption if repository directory role overlaps