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Koin Integration

Kermit's Koin integation comes in two parts - a logger implementation that writes Koin logger output to Kermit, and dependency injection helpers.

Setup​

Add the dependency​

commonMain {
    dependencies {
        implementation("co.touchlab:kermit-koin:2.0.4")
    }
}

Register the logger with Koin​

val koinApplication = startKoin {
    logger(
        KermitKoinLogger(Logger.withTag("koin"))
    )

    modules(/* modulesList */)
}

Obviously you will want to have initialized Kermit before registering a logger with Koin, and the tag you pass is optional. That said, it's useful to tag the Koin output to be able to filter and see what is going on. Once you have registered the logger, all of the normal Koin logging will be piped through to Kermit. This is especially helpful when checking your module dependencies from unit tests!

Dependency Injection Helpers​

The kermitLoggerModule() method returns a Koin module that declares a factory for logger instances. If you don't want to make use of the Koin factory, there's a getLoggerWithTag() extension method you can call directly.

We prefer injecting logger instances rather than using the global Logger instance, especially when we know we'll be unit testing a section of code.

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