kotlin-logging

kotlin-logging

项目地址：MicroUtils/kotlin-logging 

简介：Lightweight logging framework for Kotlin. A convenient and performant logging library wrapping slf4j with Kotlin extensions

更多：作者   提 Bug   

标签：

 

Lightweight logging framework for Kotlin, written in .
A convenient and performant logging library wrapping slf4j with Kotlin extensions.

Call log methods, without checking whether the respective log level is enabled

logger.debug { "Some $expensive message!" }

Behind the scenes the expensive message do not get evaluated if debug is not enabled:

// This is what happens when you write the above ^^^
if (logger.isDebugEnabled) logger.debug("Some $expensive message!")

Define the logger, without explicitly specifiying the class name

// Place definition above class declaration to make field static
private val logger = KotlinLogging.logger {}

Behind the scenes val logger will be created in the class, with the class/file name:

// This is what happens when you write the above ^^^
val logger = LoggerFactory.getLogger("package.ClassName")

Log exceptions in a Kotlin-style

// exception as first parameter with message as lambda
logger.error(exception) { "a $fancy message about the $exception" }

Getting started

private val logger = KotlinLogging.logger {} 
class FooWithLogging {
    val message = "world"
    fun bar() {
        logger.debug { "hello $message" }
    }
}