Compatibility with Kotlin Multiplatform

[CLOVIS-AI]

Hi!

Would it be possible to get support in this plugin for the kotlin("multiplatform") plugin when it has a JVM target declared?

Many of our libraries are compiled to multiple platforms. We use Java agents on the JVM to have more debug information.

[ryandens]

Definitely seems like a good enhancement! If you have any example projects that are a good fit for testing this out on, let me know!

[CLOVIS-AI]

In my case, it would in the Prepared test framework.

I would like to replace the coroutines debug library, which uses ByteBudddy to install itself when DebugProbes.install() is called (here in the code). In my usage, this can take up to ~10s, which is quite bad when running unit tests.

Instead, I'd like to migrate to the coroutines debug library's Java agent, which apparently doesn't suffer from this problem.

However, as it's a test framework, I'd rather not have to duplicate the configuration on every project that uses it, so your plugin sounds interesting to me.

[ryandens]

Cool, makes sense! Also worth noting, i believe programmatic attachment of JVM instrumentations is going away in the long term, with it already behind a feature flag that requires a command line override in modern versions of the JVM: https://openjdk.org/jeps/451

[CLOVIS-AI]

Yes, that's why I'm interested in your project. You mention in the README that this plugin directly attaches the agent in the CLI args directly, so it doesn't have this limitation?

[ryandens]

Yes, users of your test framework would need to apply the plugin to their gradle projects and add a configuration on the coroutines debug javaagent.

It'd be very similar to what mockito is doing, and what this plugin added documentation for: https://github.com/ryandens/javaagent-gradle-plugin?tab=readme-ov-file#mockito-example