Has anyone been able to use AspectJ w/ Spring Boot...

# spring

[Eric]

Has anyone been able to use AspectJ w/ Spring Boot and Kotlin? I’m trying to instrument a third party library, but for some reason it isn’t picking up my settings in META-INF/aop.xml . Also, when instrumenting Kotlin classes, it throws org.aspectj.weaver.loadtime.Aj - com/company/<NameOfKotlinClass>MethodAccess java.lang.RuntimeException: Illegal type for StackMapType: 12 .

[Eric]

Oh… the spring boot assembly puts files in META-INF in to BOOT-INF/classes/META-INF

So it seems that I’ll need to package that differently for the agent to find it.

[Eric]

That doesn’t seem right because the BootJar task specifically leaves aop.xml in the BOOT-INF directory:

void moveMetaInfToRoot(CopySpec spec) {
   spec.eachFile((file) -> {
      String path = file.getRelativeSourcePath().getPathString();
      if (path.startsWith("META-INF/") && !path.equals("META-INF/aop.xml") && !path.endsWith(".kotlin_module")) {
         moveToRoot(file);
      }
   });
}