Wrapper Slf4j Logging System for Scala

Logger.scala

package kr.kth.commons.slf4j

import org.slf4j.{Logger => Slf4jLogger, Marker}
import annotation.varargs

/**
 * Scala를 위한 Logger 입니다.
 * User: sunghyouk.bae@gmail.com
 * Date: 13. 1. 6.
 */
class Logger(val log: Slf4jLogger) {

	import scala.language.implicitConversions

	private implicit def _any2String(msg: Any): String =
		msg match {
			case null => "<null>"
			case _ => msg.toString
		}

	@inline final def name = log.getName

	@inline final def isTraceEnabled = log.isTraceEnabled
	@inline final def isTraceEnabled(marker: Marker) = log.isTraceEnabled(marker)

	@inline final def trace(msg: String, t: Throwable) {
		if (isTraceEnabled)
			log.trace(msg, t)
	}
	@inline final def trace(marker: Marker, msg: String, t: Throwable) {
		if (isTraceEnabled(marker))
			log.trace(marker, msg, t)
	}
	@inline
	@varargs final def trace(format: => Any, arguments: Any*) {
		if (isTraceEnabled)
			log.trace(format.toString, arguments.map(_.asInstanceOf[AnyRef]): _*)
	}
	@inline
	@varargs final def trace(marker: Marker, format: => Any, arguments: Any*) {
		if (isTraceEnabled(marker))
			log.trace(marker, format.toString, arguments.map(_.asInstanceOf[AnyRef]): _*)
	}

	@inline final def isDebugEnabled = log.isDebugEnabled
	@inline final def isDebugEnabled(marker: Marker) = log.isDebugEnabled(marker)

	@inline final def debug(msg: String, t: Throwable) {
		if (isDebugEnabled)
			log.debug(msg, t)
	}
	@inline final def debug(marker: Marker, msg: String, t: Throwable) {
		if (isDebugEnabled(marker))
			log.debug(marker, msg, t)
	}
	@inline
	@varargs final def debug(format: => Any, arguments: Any*) {
		if (isDebugEnabled)
			log.debug(format.toString, arguments.map(_.asInstanceOf[AnyRef]): _*)
	}
	@inline
	@varargs final def debug(marker: Marker, format: => Any, arguments: Any*) {
		if (isDebugEnabled(marker))
			log.debug(marker, format.toString, arguments.map(_.asInstanceOf[AnyRef]): _*)
	}

	@inline final def isInfoEnabled = log.isInfoEnabled
	@inline final def isInfoEnabled(marker: Marker) = log.isInfoEnabled(marker)

	@inline final def info(msg: String, t: Throwable) {
		if (isInfoEnabled)
			log.info(msg, t)
	}
	@inline final def info(marker: Marker, msg: String, t: Throwable) {
		if (isInfoEnabled(marker))
			log.info(marker, msg, t)
	}
	@inline
	@varargs final def info(format: => Any, arguments: Any*) {
		if (isInfoEnabled)
			log.info(format.toString, arguments.map(_.asInstanceOf[AnyRef]): _*)
	}
	@inline
	@varargs final def info(marker: Marker, format: => Any, arguments: Any*) {
		if (isInfoEnabled(marker))
			log.info(marker, format.toString, arguments.map(_.asInstanceOf[AnyRef]): _*)
	}

	@inline final def isWarnEnabled = log.isWarnEnabled
	@inline final def isWarnEnabled(marker: Marker) = log.isWarnEnabled(marker)

	@inline final def warn(msg: String, t: Throwable) {
		if (isWarnEnabled)
			log.warn(msg, t)
	}
	@inline final def warn(marker: Marker, msg: String, t: Throwable) {
		if (isWarnEnabled(marker))
			log.warn(marker, msg, t)
	}
	@inline
	@varargs final def warn(format: => Any, arguments: Any*) {
		if (isWarnEnabled)
			log.warn(format.toString, arguments.map(_.asInstanceOf[AnyRef]): _*)
	}
	@inline
	@varargs final def warn(marker: Marker, format: => Any, arguments: Any*) {
		if (isWarnEnabled(marker))
			log.warn(marker, format.toString, arguments.map(_.asInstanceOf[AnyRef]): _*)
	}


	@inline final def isErrorEnabled = log.isErrorEnabled
	@inline final def isErrorEnabled(marker: Marker) = log.isErrorEnabled(marker)

	@inline final def error(msg: String, t: Throwable) {
		if (isErrorEnabled)
			log.error(msg, t)
	}
	@inline final def error(marker: Marker, msg: String, t: Throwable) {
		if (isErrorEnabled(marker))
			log.error(marker, msg, t)
	}
	@inline
	@varargs final def error(format: => Any, arguments: Any*) {
		if (isErrorEnabled)
			log.error(format.toString, arguments.map(_.asInstanceOf[AnyRef]): _*)
	}
	@inline
	@varargs final def error(marker: Marker, format: => Any, arguments: Any*) {
		if (isErrorEnabled(marker))
			log.error(marker, format.toString, arguments.map(_.asInstanceOf[AnyRef]): _*)
	}
}

object Logger {

	import scala.reflect.{classTag, ClassTag}

	lazy val RootLoggerName = Slf4jLogger.ROOT_LOGGER_NAME

	/**
	 * 지정된 이름을 Logger 이름으로 사용합니다. 예: Logger("LoggerName")
	 */
	def apply(name: String): Logger = new Logger(org.slf4j.LoggerFactory.getLogger(name))

	/**
	 * 지정한 클래스 수형에 맞는 Logger를 반환합니다. 예: Logger(this.type)
	 */
	def apply(cls: Class[_]): Logger = apply(cls.getName)

	/**
	 * 특정 클래스에 맞는 Logger 를 반환합니다. 예: Logger[classOf[MyClass]]
	 */
	def apply[C: ClassTag](): Logger = apply(classTag[C].runtimeClass.getName)

	/**
	 * Root Logger
	 */
	def rootLogger = apply(RootLoggerName)
}