AOT doesn't work with new micronaut 3.8.5 version

[Kartikvk1996]

Expected Behavior

AOT compiler should compile the code and generate optimized jar

Actual Behaviour

Fails with Null pointer exception

[INFO] --- micronaut-maven-plugin:3.5.2:aot-analysis (default-aot-analysis) @ aotTest --- [INFO] Running Micronaut AOT 1.1.1 aot-analysis [INFO] Packaging project [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] Using 'UTF-8' encoding to copy filtered properties files. [INFO] Copying 2 resources [INFO] Changes detected - recompiling the module! [INFO] Compiling 1 source file to C:\Users\test\Downloads\aotTest\target\classes [INFO] Executing Micronaut AOT analysis [INFO] Using AOT configuration file: C:\Users\test\Downloads\aotTest\aot-jar.properties 10:38:32.888 [main] INFO i.m.aot.MicronautAotOptimizer - Analysis will be performed with active environments: [] 10:38:33.278 [main] INFO i.m.a.s.s.YamlPropertySourceGenerator - Converting application.yml into Java based configuration 10:38:33.298 [ForkJoinPool.commonPool-worker-7] INFO i.m.a.s.s.YamlPropertySourceGenerator - Converting application.yml into Java based configuration 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) at picocli.CommandLine.executeUserObject(CommandLine.java:1939) at picocli.CommandLine.access$1300(CommandLine.java:145) at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2352) at picocli.CommandLine$RunLast.handle(CommandLine.java:2346) at picocli.CommandLine$RunLast.handle(CommandLine.java:2311) at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2179) at picocli.CommandLine.execute(CommandLine.java:2078) at io.micronaut.aot.cli.Main.execute(Main.java:134) at io.micronaut.aot.cli.Main.main(Main.java:138) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at io.micronaut.aot.cli.Main.executeInIsolatedLoader(Main.java:107) ... 10 more Caused by: java.lang.NullPointerException at io.micronaut.aot.MicronautAotOptimizer.compileGeneratedSources(MicronautAotOptimizer.java:123) at io.micronaut.aot.MicronautAotOptimizer.access$200(MicronautAotOptimizer.java:98) at io.micronaut.aot.MicronautAotOptimizer$Runner.execute(MicronautAotOptimizer.java:344) at io.micronaut.aot.MicronautAotOptimizer.execute(MicronautAotOptimizer.java:202) ... 15 more [ERROR] Command execution failed.

Steps To Reproduce

Generate a simple micronaut project using the below command.

mn create-app --build=maven --jdk=8 --lang=java --test=junit --features=micronaut-aot com.example.aottest

or get the same from "Micronaut launch" URL

curl --location --request GET 'https://launch.micronaut.io/create/default/com.example.aotTest?lang=JAVA&build=MAVEN&test=JUNIT&javaVersion=JDK_8&features=micronaut-aot' --output aotTest.zip

Environment Information

• Windows 10
• JDK 1.8

Example Application

No response

Version

3.8.5

[Kartikvk1996]

@sdelamo @alvarosanchez Any update on this as this is a blocker and we need this feature to speed up application startup time.
I see even with a simple application the plugin fails to generate code.

[melix]

I cannot reproduce the problem. I have tried the CLI you provided, with Micronaut 3.8.5, and executed both ./mvnw mn:run and ./mnvw package, both passed.

I also tried with Gradle and it works too.

[melix]

That said I didn't try under Windows, could be the problem...

[altro3]

@Kartikvk1996 @melix Can't reproduce it too on Windows 10. All works fine

[Kartikvk1996]

Trying out different paths resolved the issue for me also.

@melix @altro3 I have a multi-module project with a parent pom, The issue here is all modules use micronaut framework, I want to use AOT for all projects but the challenge is, to use I have to add "micronaut-build-plugin" with the AOT config file path, This generates FAT jar at each modules target location and test cases fail saying "multiple" bean definitions found.

Earlier I had "micronaut-build-plugin" in a module with an "exec" class and here all the other modules' jar files are copied and the FAT jar is generated, but using this approach I am applying AOT to just one module.

Waiting for a proper solution, Can we use the AOT in "compiler-plugin"

[melix]

Multi-project builds are definitely not Maven's selling point. ATM I don't think the Micronaut Maven plugin works well in this context, so I would strongly recommend to use the Gradle plugin instead, the UX should be much better.

[alvarosanchez]

@Kartikvk1996 I'm unclear about what you want to achieve. Supossing that by "micronaut-build-plugin" you mean the Micronaut Maven Plugin, then it needs to be added only to the module that runs the application (the one that has the main Application class).

Is your question how to use AOT in the other modules?

[Kartikvk1996]

@alvarosanchez Yes, I want to know how to use AOT for other modules whose pom has only "maven-compiler-plugin" to just compile the class and create a basic jar. Here even if AOT is enabled the plugin doesn't work it needs "micronaut-maven-plugin" to generate AOT classes.

To resolve this I added "micronaut-maven-plugin" to parent pom and now all modules generate FAT jar and it is creating "Multiple bean instances" error when running.

[alvarosanchez]

I have created micronaut-projects/micronaut-maven-plugin#645