[MNG-7741] Add more information when using -Dmaven.repo.local.recordReverseTree=true

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.9.2, 4.0.0-alpha-7, 4.0.0
• Component/s: Artifacts and Repositories
• Assignee: Tamas Cservenak
• Reporter: Grzegorz Grzybek
• Created: 16/Mar/23 10:42
• Updated: 12/Apr/23 11:14
• Resolved: 12/Apr/23 11:09

Description

I much appreciate adding -Dmaven.repo.local.recordReverseTree=true option to Maven Core (supported by new resolver features).

After initial idea, I added few more options to https://github.com/grgrzybek/tracking-maven-extension and I'd be happy to see these in org.apache.maven.internal.aether.ReverseTreeRepositoryListener.

I did some experiments locally and I have improvement ready which:

tracks information about missing dependencies

when using non-existing dependency (like org.slf4j:slf4j-apix), I can see ~/.m2/repository/org/slf4j/slf4j-apix/1.7.36/.tracking/grgr_simplest_jar_1.0.miss file with:

org.slf4j:slf4j-apix:pom:1.7.36
  org.slf4j:slf4j-apix:jar:1.7.36 (compile) (project)
    grgr:simplest:jar:1.0 (project)

Configured repositories:
 - central : https://repo.maven.apache.org/maven2

tracks information about actual repository information (in _remote.repositories we have only the ID)

For example

org.apache.maven.plugins:maven-compiler-plugin:pom:3.10.1
  org.apache.maven.plugins:maven-compiler-plugin:3.10.1
    org.apache.maven:maven-core:3.9.1:default-lifecycle-bindings (implicit)

Repository: central (https://repo.maven.apache.org/maven2, default, releases)

tracks information where only POM is downloaded

For example with ~/.m2/repository/com/google/guava/guava-parent/16.0.1/.tracking/org.apache.maven.plugins_maven-surefire-plugin_jar_3.0.0.dep:

com.google.guava:guava-parent:pom:16.0.1
  com.google.guava:guava:jar:16.0.1 (compile) (plugin)
    org.sonatype.sisu:sisu-guice:jar:no_aop:3.2.3 (compile) (plugin)
      org.apache.maven:maven-core:jar:3.2.5 (provided) (plugin)
        org.apache.maven.shared:maven-common-artifact-filters:jar:3.1.1 (compile) (plugin)
          org.apache.maven.surefire:maven-surefire-common:jar:3.0.0 (compile) (plugin)
            org.apache.maven.plugins:maven-surefire-plugin:jar:3.0.0 () (plugin)

Repository: central (https://repo.maven.apache.org/maven2, default, releases)

tracks reverse trees originating from plugins (also implicit ones)

org.apache:apache:pom:26
  org.apache.maven.plugins:maven-resources-plugin:3.3.0
    org.apache.maven:maven-core:3.9.1:default-lifecycle-bindings (implicit)

Repository: central (https://repo.maven.apache.org/maven2, default, releases)

Issue Links

• links to: GitHub Pull Request #1058