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Pax Logging backend implementation based on Apache Log4J2. It provides Log4J2 specific implementation of PaxLoggingService interface and Log4J2 specific configuration methods. Users may customize Log4J2 behaviour (appenders, layouts) by creating fragment attached to this bundle.

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/*
 * 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.spi;

import java.util.EnumSet;

/**
 * Standard Logging Levels as an enumeration for use internally. This enum is used as a parameter in
 * any public APIs.
 */
public enum StandardLevel {

    /**
     * No events will be logged.
     */
    OFF(0),

    /**
     * A severe error that will prevent the application from continuing.
     */
    FATAL(100),

    /**
     * An error in the application, possibly recoverable.
     */
    ERROR(200),

    /**
     * An event that might possible lead to an error.
     */
    WARN(300),

    /**
     * An event for informational purposes.
     */
    INFO(400),

    /**
     * A general debugging event.
     */
    DEBUG(500),

    /**
     * A fine-grained debug message, typically capturing the flow through the application.
     */
    TRACE(600),

    /**
     * All events should be logged.
     */
    ALL(Integer.MAX_VALUE);


    private final int intLevel;

    private static final EnumSet levelSet = EnumSet.allOf(StandardLevel.class);

    private StandardLevel(final int val) {
        intLevel = val;
    }

    /**
     * Returns the integer value of the Level.
     * @return the integer value of the Level.
     */
    public int intLevel() {
        return intLevel;
    }

    /**
     * Method to convert custom Levels into a StandardLevel for conversion to other systems.
     * @param intLevel The integer value of the Level.
     * @return The StandardLevel.
     */
    public static StandardLevel getStandardLevel(final int intLevel) {
        StandardLevel level = StandardLevel.OFF;
        for (final StandardLevel lvl : levelSet) {
            if (lvl.intLevel() > intLevel) {
                break;
            }
            level = lvl;
        }
        return level;
    }
}