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MessageLogger.scala
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MessageLogger.scala
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/*
* Copyright 2018 Typelevel
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.typelevel.log4cats
import cats._
trait MessageLogger[F[_]] {
def error(message: => String): F[Unit]
def warn(message: => String): F[Unit]
def info(message: => String): F[Unit]
def debug(message: => String): F[Unit]
def trace(message: => String): F[Unit]
def mapK[G[_]](fk: F ~> G): MessageLogger[G] =
MessageLogger.mapK(fk)(this)
}
object MessageLogger {
def apply[F[_]](implicit ev: MessageLogger[F]): MessageLogger[F] = ev
private def mapK[G[_], F[_]](f: G ~> F)(logger: MessageLogger[G]): MessageLogger[F] =
new MessageLogger[F] {
def error(message: => String): F[Unit] =
f(logger.error(message))
def warn(message: => String): F[Unit] =
f(logger.warn(message))
def info(message: => String): F[Unit] =
f(logger.info(message))
def debug(message: => String): F[Unit] =
f(logger.debug(message))
def trace(message: => String): F[Unit] =
f(logger.trace(message))
}
}