log4j2 - ran into issues with mn

[waveskimmer]

Using

mn create-app demo -b=gradle_kotlin --jdk=21 --lang=kotlin --features=yaml,log4j2

I'm getting this error:

> Task :prepareJitOptimizations FAILED
SLF4J(W): No SLF4J providers were found.
SLF4J(W): Defaulting to no-operation (NOP) logger implementation
SLF4J(W): See https://www.slf4j.org/codes.html#noProviders for further details.
SLF4J(W): Class path contains SLF4J bindings targeting slf4j-api versions 1.7.x or earlier.
SLF4J(W): Ignoring binding found at [jar:file:/Users/A618887/.gradle/caches/modules-2/files-2.1/org.apache.logging.log4j/log4j-slf4j-impl/2.23.1/9ef67909a1b4eae999af4c7a211ab2379e4b86c2/log4j-slf4j-impl-2.23.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J(W): See https://www.slf4j.org/codes.html#ignoredBindings for an explanation.
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
        at io.micronaut.aot.cli.Main.executeInIsolatedLoader(Main.java:113)
        at io.micronaut.aot.cli.Main.run(Main.java:87)

Any ideas?

[nedelva]

I confirm that is easily reproducible. Moreover, the stack trace contains already an indication of what went wrong:

The logback.xml conversion feature requires logback 1.4 on the AOT optimizer classpath
at io.micronaut.aot.std.sourcegen.LogbackConfigurationSourceGenerator.generate(LogbackConfigurationSourceGenerator.java:53)
at io.micronaut.aot.core.codegen.AbstractSingleClassFileGenerator.generate(AbstractSingleClassFileGenerator.java:35)
at io.micronaut.aot.std.sourcegen.LogbackConfigurationSourceGenerator.generate(LogbackConfigurationSourceGenerator.java:85)
at io.micronaut.aot.core.codegen.ApplicationContextConfigurerGenerator.generate(ApplicationContextConfigurerGenerator.java:66)
at io.micronaut.aot.MicronautAotOptimizer$Runner.execute(MicronautAotOptimizer.java:343)
at io.micronaut.aot.MicronautAotOptimizer.execute(MicronautAotOptimizer.java:202)

By the looks of it, AOT optimisation is doing something it should not do. (I have found a similar issue: issue 148 in micronaut-aot)

Mitigation action

In build.gradle.kts use
replaceLogbackXml = false

This discussion should be converted into an issue in micronaut-aot project IMO.