001 /*
002 * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025
026 package java.util.logging;
027
028 import java.util.Enumeration;
029 import java.util.List;
030 import java.util.ArrayList;
031
032 /**
033 * Logging is the implementation class of LoggingMXBean.
034 *
035 * The <tt>LoggingMXBean</tt> interface provides a standard
036 * method for management access to the individual
037 * java.util.Logger objects available at runtime.
038 *
039 * @author Ron Mann
040 * @author Mandy Chung
041 * @version 1.15, 05/05/07
042 * @since 1.5
043 *
044 * @see javax.management
045 * @see java.util.Logger
046 * @see java.util.LogManager
047 */
048 class Logging implements LoggingMXBean {
049
050 private static LogManager logManager = LogManager.getLogManager();
051
052 /** Constructor of Logging which is the implementation class
053 * of LoggingMXBean.
054 */
055 Logging() {
056 }
057
058 public List<String> getLoggerNames() {
059 Enumeration loggers = logManager.getLoggerNames();
060 ArrayList<String> array = new ArrayList<String>();
061
062 for (; loggers.hasMoreElements();) {
063 array.add((String) loggers.nextElement());
064 }
065 return array;
066 }
067
068 private static String EMPTY_STRING = "";
069
070 public String getLoggerLevel(String loggerName) {
071 Logger l = logManager.getLogger(loggerName);
072 if (l == null) {
073 return null;
074 }
075
076 Level level = l.getLevel();
077 if (level == null) {
078 return EMPTY_STRING;
079 } else {
080 return level.getName();
081 }
082 }
083
084 public void setLoggerLevel(String loggerName, String levelName) {
085 if (loggerName == null) {
086 throw new NullPointerException("loggerName is null");
087 }
088
089 Logger logger = logManager.getLogger(loggerName);
090
091 if (logger == null) {
092 throw new IllegalArgumentException("Logger " + loggerName
093 + "does not exist");
094 }
095
096 Level level = null;
097 if (levelName != null) {
098 // parse will throw IAE if logLevel is invalid
099 level = Level.parse(levelName);
100 }
101
102 logger.setLevel(level);
103 }
104
105 public String getParentLoggerName(String loggerName) {
106 Logger l = logManager.getLogger(loggerName);
107 if (l == null) {
108 return null;
109 }
110
111 Logger p = l.getParent();
112 if (p == null) {
113 // root logger
114 return EMPTY_STRING;
115 } else {
116 return p.getName();
117 }
118 }
119
120 }
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