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Logging.scala
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Logging.scala
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/*
* Copyright (c) Monterey Bay Aquarium Research Institute 2022
*
* worms-server code is licensed under the MIT license.
*/
package org.fathomnet.worms.etc.jdk
import java.lang.System.Logger
import java.lang.System.Logger.Level
import java.util.function.Supplier
/**
* Add fluent logging to System.Logger. Usage:
* {{{
* import org.fathomnet.support.etc.jdk.Logging.{given}
* val log = System.getLogger("my.logger")
*
* log.atInfo.log("Hello World")
* log.atInfo.withCause(new RuntimeException("Oops")).log("Hello World")
*
* }}}
* * @author Brian Schlining
*/
object Logging:
case class LoggerBuilder(
logger: Logger,
level: Level = Level.OFF,
throwable: Option[Throwable] = None
):
def atTrace: LoggerBuilder = copy(level = Level.TRACE)
def atDebug: LoggerBuilder = copy(level = Level.DEBUG)
def atInfo: LoggerBuilder = copy(level = Level.INFO)
def atWarn: LoggerBuilder = copy(level = Level.WARNING)
def atError: LoggerBuilder = copy(level = Level.ERROR)
def withCause(cause: Throwable): LoggerBuilder = copy(throwable = Some(cause))
def log(msg: String): Unit =
if (logger.isLoggable(level))
throwable match
case Some(e) => logger.log(level, msg, e)
case None => logger.log(level, msg)
def log(fn: Supplier[String]): Unit =
if (logger.isLoggable(level))
throwable match
case Some(e) => logger.log(level, fn, e)
case None => logger.log(level, fn)
given Conversion[Logger, LoggerBuilder] with
def apply(logger: Logger): LoggerBuilder = LoggerBuilder(logger)