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How to use Groovy + GraalVM + Quarkus together?

If you are one among those who like Groovy for its simplicity and tight integration with Java (and not for its dynamic capabilities) and wondered how to write Groovy code in a Quarkus application and compile it to native using GraalVM?

I have you covered. You dont have to look anywhere else.

Scope

  • groovy code as part of quarkus application
  • statically compilable groovy code with no dynamic feature
  • compile the final application to native code using graalvm
Code example can be found here.

Steps

  1. Create a quarkus application as outlined here
  2. Add your groovy class under src/main/java
  3. Annotate your groovy class with @groovy.transform.CompileStatic
  4. create a file called application.properies under src/main/resources folder with the following content.

quarkus.native.additional-build-args=\
    --allow-incomplete-classpath, \
    --report-unsupported-elements-at-runtime, \
    --initialize-at-build-time, \
    --initialize-at-run-time=org.codehaus.groovy.control.XStreamUtils\\,groovy.grape.GrapeIvy, \
    --no-fallback

Build your native applicaton using,
./mvnw package -Pnative -Dquarkus.native.container-build=true

Voila! You groovy application is compiled to native code.

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Comments

  1. AnonymousOctober 31, 2022 at 5:58 AM

    I would like to use groovy with quarkus for a regular java application.

    I did the following steps

    1. Create a quarkus application as outlined here
    2. Add your groovy class under src/main/java
    3. Annotate your groovy class with @groovy.transform.CompileStatic

    My application worked, only the live reload of the groovy classes didn't.

    Will I have a problem? The quarkus documentation doesn't say anything about groovy

    ReplyDelete
  2. Pragalathan MDecember 12, 2022 at 12:11 PM

    Yes, live reload will not work but it should not be a problem in production

    ReplyDelete

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