Is there a more generic way to do ```LoggerFactory.getLogger(SomeService::class.java)``` in Kotlin w...

# getting-started

[Kenneth]

Is there a more generic way to do

LoggerFactory.getLogger(SomeService::class.java)

in Kotlin where I won't need to specify the exact class?

[CLOVIS]

It depends on your logging library. KotlinLogging uses an empty function with a lambda to steal the class information (val logger = KotlinLogging.logger {}), my Pedestal library lets you pass an object directly (val logger = loggerFor(this))

[Chris Lee]

See kotlin-logging

[Kenneth]

Typical sl4j with logback project

[Adam S]

there are a lot of suggestions here https://www.baeldung.com/kotlin/logging

What you probably want is 6.4, a util method with a reified type parameter, or 7, using a delegate.

But do consider using kotlin-logging because it includes these fixes and some other Kotlin-friendly helpers. Under the hood it’d still be slf4j + logback.

[Adam S]

For fun, here’s a logger delegate that doesn’t fetch the logger every time. It uses a delegate provider to initialise the delegate with a logger, so the logger can be re-used.

https://pl.kotl.in/xrSCvWlQs

(I used Java Logging so it could run in Kotlin playground)

loggerDelegate.kt.cpp

[Kenneth]

Thanks for the suggestions, I will take a closer look at kotlin-logging.

[ephemient]

after https://youtrack.jetbrains.com/issue/KT-11968/Research-and-prototype-namespace-based-solution-for-statics-and-static-extensions, there may be a way to create a logger() extension function without having to explicitly call it with <> etc.

[Humphrey]

Here they explain how you can create a bean and inject it in your classes.

https://medium.com/simars/inject-loggers-in-spring-java-or-kotlin-87162d02d068