anyone have an example of using `atomicfu` in a multiplatform project for common code? having some t...

# multiplatform

[william]

anyone have an example of using atomicfu in a multiplatform project for common code? having some trouble with it and could use a reference project

[Oleg Yukhnevich]

Take a look https://github.com/rsocket/rsocket-kotlin/tree/master/rsocket-core

[Oleg Yukhnevich]

Usage: https://github.com/rsocket/rsocket-kotlin/blob/master/rsocket-core/src/commonMain/kotlin/io/rsocket/kotlin/internal/StreamId.kt

[william]

thank you. applying the plugin was throwing an error, but just using the dependency in the commonMain source set is working

[Oleg Yukhnevich]

note: plugin should be added to classpath in root module to support auto-dependencies

[Oleg Yukhnevich]

https://github.com/Kotlin/kotlinx.atomicfu/issues/137

[eygraber]

I have some code that's set up similarly to rsocket. There's a common module (:core) that has the atomicfu plugin, and another module (:sample) that depends on it, but does not use the plugin or declare a dependency on atomicfu.

At runtime, when :sample invokes code from :core that uses atomicfu internally, it crashes with NoClassDefFoundError: Failed resolution of: Lkotlinx/atomicfu/AtomicFU

The only way to fix that is to add the atomicfu plugin to :sample but i don't want to impose that on everyone that has a dependency on :core (it's part of a library).

I know this isn't the case with libraries like coroutines or rsocket, so if you have any ideas that would be helpful.

[eygraber]

I ended up just adding api("org.jetbrains.kotlinx:atomicfu:0.15.1") to the :core module

[william]

@eygraber the consumers of core should only need api if your core module exposes something from atomicfu

[eygraber]

It doesn't expose anything but it was the only way to get it to work without explicitly depending on atomicfu from the consumer.

I made a bunch of changes to Gradle since then so I'll try again.

[william]

interesting 🤷