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/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.classic;

import org.slf4j.spi.LocationAwareLogger;

/**
 * Defines the set of levels recognized by logback-classic, that is {@link #OFF},
 * {@link #ERROR}, {@link #WARN}, {@link #INFO}, {@link #DEBUG},
 * {@link #TRACE} and {@link #ALL}. 

The Level class is * final and cannot be sub-classed. *

*/ public final class Level implements java.io.Serializable { private static final long serialVersionUID = -814092767334282137L; public static final int OFF_INT = Integer.MAX_VALUE; public static final int ERROR_INT = 40000; public static final int WARN_INT = 30000; public static final int INFO_INT = 20000; public static final int DEBUG_INT = 10000; public static final int TRACE_INT = 5000; public static final int ALL_INT = Integer.MIN_VALUE; public static final Integer OFF_INTEGER = OFF_INT; public static final Integer ERROR_INTEGER = ERROR_INT; public static final Integer WARN_INTEGER = WARN_INT; public static final Integer INFO_INTEGER = INFO_INT; public static final Integer DEBUG_INTEGER = DEBUG_INT; public static final Integer TRACE_INTEGER = TRACE_INT; public static final Integer ALL_INTEGER = ALL_INT; /** * The OFF is used to turn off logging. */ public static final Level OFF = new Level(OFF_INT, "OFF"); /** * The ERROR level designates error events which may or not * be fatal to the application. */ public static final Level ERROR = new Level(ERROR_INT, "ERROR"); /** * The WARN level designates potentially harmful situations. */ public static final Level WARN = new Level(WARN_INT, "WARN"); /** * The INFO level designates informational messages * highlighting overall progress of the application. */ public static final Level INFO = new Level(INFO_INT, "INFO"); /** * The DEBUG level designates informational events of lower * importance. */ public static final Level DEBUG = new Level(DEBUG_INT, "DEBUG"); /** * The TRACE level designates informational events of very low * importance. */ public static final Level TRACE = new Level(TRACE_INT, "TRACE"); /** * The ALL is used to turn on all logging. */ public static final Level ALL = new Level(ALL_INT, "ALL"); public final int levelInt; public final String levelStr; /** * Instantiate a Level object. */ private Level(int levelInt, String levelStr) { this.levelInt = levelInt; this.levelStr = levelStr; } /** * Returns the string representation of this Level. */ public String toString() { return levelStr; } /** * Returns the integer representation of this Level. */ public int toInt() { return levelInt; } /** * Convert a Level to an Integer object. * * @return This level's Integer mapping. */ public Integer toInteger() { switch (levelInt) { case ALL_INT: return ALL_INTEGER; case TRACE_INT: return TRACE_INTEGER; case DEBUG_INT: return DEBUG_INTEGER; case INFO_INT: return INFO_INTEGER; case WARN_INT: return WARN_INTEGER; case ERROR_INT: return ERROR_INTEGER; case OFF_INT: return OFF_INTEGER; default: throw new IllegalStateException("Level " + levelStr + ", " + levelInt + " is unknown."); } } /** * Returns true if this Level has a higher or equal Level than * the Level passed as argument, false otherwise. */ public boolean isGreaterOrEqual(Level r) { return levelInt >= r.levelInt; } /** * Convert the string passed as argument to a Level. If the conversion fails, * then this method returns {@link #DEBUG}. */ public static Level toLevel(String sArg) { return toLevel(sArg, Level.DEBUG); } /** * This method exists in order to comply with Joran's valueOf convention. * * @param sArg * @return */ public static Level valueOf(String sArg) { return toLevel(sArg, Level.DEBUG); } /** * Convert an integer passed as argument to a Level. If the conversion fails, * then this method returns {@link #DEBUG}. */ public static Level toLevel(int val) { return toLevel(val, Level.DEBUG); } /** * Convert an integer passed as argument to a Level. If the conversion fails, * then this method returns the specified default. */ public static Level toLevel(int val, Level defaultLevel) { switch (val) { case ALL_INT: return ALL; case TRACE_INT: return TRACE; case DEBUG_INT: return DEBUG; case INFO_INT: return INFO; case WARN_INT: return WARN; case ERROR_INT: return ERROR; case OFF_INT: return OFF; default: return defaultLevel; } } /** * Convert the string passed as argument to a Level. If the conversion fails, * then this method returns the value of defaultLevel. */ public static Level toLevel(String sArg, Level defaultLevel) { if (sArg == null) { return defaultLevel; } if (sArg.equalsIgnoreCase("ALL")) { return Level.ALL; } if (sArg.equalsIgnoreCase("TRACE")) { return Level.TRACE; } if (sArg.equalsIgnoreCase("DEBUG")) { return Level.DEBUG; } if (sArg.equalsIgnoreCase("INFO")) { return Level.INFO; } if (sArg.equalsIgnoreCase("WARN")) { return Level.WARN; } if (sArg.equalsIgnoreCase("ERROR")) { return Level.ERROR; } if (sArg.equalsIgnoreCase("OFF")) { return Level.OFF; } return defaultLevel; } /** * Return the flyweight instance of the level received through serizalization, * i.e. 'this'. * * @return The appropriate flyweight instance */ private Object readResolve() { return toLevel(this.levelInt); } /** * Convert one of the integer values defined in {@link LocationAwareLogger} * interface to an instance of this class, i.e. a Level. * * @param levelInt An integer value representing a level as defined in LocationAwareLogger * @return an instance of this class, i.e. a Level. * @since 1.0.1 */ public static Level fromLocationAwareLoggerInteger(int levelInt) { Level level; switch (levelInt) { case LocationAwareLogger.TRACE_INT: level = TRACE; break; case LocationAwareLogger.DEBUG_INT: level = DEBUG; break; case LocationAwareLogger.INFO_INT: level = INFO; break; case LocationAwareLogger.WARN_INT: level = WARN; break; case LocationAwareLogger.ERROR_INT: level = ERROR; break; default: throw new IllegalArgumentException(levelInt + " not a valid level value"); } return level; } /** * Convert this level instance to an integer value defined in the * {@link LocationAwareLogger} interface. * * @param level The level to convert to LocationAwareLogger integer * @return int An integer corresponding to this level as defined in LocationAwareLogger * @since 1.0.1 */ public static int toLocationAwareLoggerInteger(Level level) { if (level == null) throw new IllegalArgumentException("null level parameter is not admitted"); switch (level.toInt()) { case Level.TRACE_INT: return LocationAwareLogger.TRACE_INT; case Level.DEBUG_INT: return LocationAwareLogger.DEBUG_INT; case Level.INFO_INT: return LocationAwareLogger.INFO_INT; case Level.WARN_INT: return LocationAwareLogger.WARN_INT; case Level.ERROR_INT: return LocationAwareLogger.ERROR_INT; default: throw new IllegalArgumentException(level + " not a valid level value"); } } }




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