org.apache.logging.log4j.jul.LevelConverter Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you 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.apache.logging.log4j.jul;
import org.apache.logging.log4j.Level;
/**
* Strategy interface to convert between custom Log4j {@link Level Levels} and JUL
* {@link java.util.logging.Level Levels}.
*
* @see Constants#LEVEL_CONVERTER_PROPERTY
* @since 2.1
*/
public interface LevelConverter {
/**
* Converts a JDK logging Level to a Log4j logging Level.
*
* @param javaLevel JDK Level to convert, may be null per the JUL specification.
* @return converted Level or {@code null} if the given level could not be converted.
*/
Level toLevel(java.util.logging.Level javaLevel);
/**
* Converts a Log4j logging Level to a JDK logging Level.
*
* @param level Log4j Level to convert.
* @return converted Level or {@code null} if the given level could not be converted.
*/
java.util.logging.Level toJavaLevel(Level level);
}