[MNG-8296] Build failure on unsupported Language

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.0-beta-4
• Fix Version/s: 4.0.0-beta-5
• Component/s: Core
• Assignee: Guillaume Nodet
• Reporter: Michael Keppler
• Created: 09/Oct/24 07:01
• Updated: 16/Oct/24 14:14
• Resolved: 16/Oct/24 14:14

Description

Maven fails when extensions are declared as part of a plugin (that is, not as extension xml tag), as described in variant 1 of https://maven.apache.org/guides/mini/guide-using-extensions.html

For reproduction:

• checkout https://github.com/checkstyle/eclipse-cs.git
• run mvn 4 without goals

 

[INFO] Scanning for projects...
[ERROR] Internal error: java.lang.IllegalArgumentException: Unknown extensible enum value 'xml' -> [Help 1]
org.apache.maven.InternalErrorException: Internal error: java.lang.IllegalArgumentException: Unknown extensible enum value 'xml'
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:157)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:981)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:291)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:208)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
    at java.lang.reflect.Method.invoke(Method.java:580)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:255)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:201)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:361)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:314)
Caused by: java.lang.IllegalArgumentException: Unknown extensible enum value 'xml'
    at org.apache.maven.api.services.ExtensibleEnumRegistry.lambda$require$0(ExtensibleEnumRegistry.java:33)
    at java.util.Optional.orElseThrow(Optional.java:403)
    at org.apache.maven.api.services.ExtensibleEnumRegistry.require(ExtensibleEnumRegistry.java:33)
    at org.apache.maven.internal.impl.DefaultTypeRegistry.lambda$require$1(DefaultTypeRegistry.java:94)
    at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)
    at org.apache.maven.internal.impl.DefaultTypeRegistry.require(DefaultTypeRegistry.java:87)
    at org.apache.maven.internal.impl.DefaultTypeRegistry.lookup(DefaultTypeRegistry.java:80)
    at org.apache.maven.internal.impl.DefaultPackagingRegistry.lookup(DefaultPackagingRegistry.java:88)
    at org.apache.maven.internal.impl.model.DefaultLifecycleBindingsInjector.injectLifecycleBindings(DefaultLifecycleBindingsInjector.java:69)
    at org.apache.maven.internal.impl.model.DefaultModelBuilder.build(DefaultModelBuilder.java:575)
    at org.apache.maven.internal.impl.model.DefaultModelBuilder.build(DefaultModelBuilder.java:198)
    at org.apache.maven.project.DefaultProjectBuilder$BuildSession.doBuild(DefaultProjectBuilder.java:825)
    at org.apache.maven.project.DefaultProjectBuilder$BuildSession.lambda$build$6(DefaultProjectBuilder.java:794)
    at java.util.concurrent.FutureTask.run(FutureTask.java:317)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
    at java.lang.Thread.run(Thread.java:1583)

Deleting just the line "<extension>true</extension>" avoids the exception (of course the build still doesn't succeed then).

I have several projects that use the Maven Tycho extension (for building Eclipse plugins). All of those builds fail similarly.

 

Issue Links

• links to: GitHub Pull Request #1809