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Logging.java
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119 lines (104 loc) · 2.63 KB
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/*
* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package java.util.logging;
import java.util.Enumeration;
import java.util.List;
import java.util.ArrayList;
/**
* Logging is the implementation class of LoggingMXBean.
*
* The <tt>LoggingMXBean</tt> interface provides a standard
* method for management access to the individual
* {@code Logger} objects available at runtime.
*
* @author Ron Mann
* @author Mandy Chung
* @since 1.5
*
* @see javax.management
* @see Logger
* @see LogManager
*/
class Logging implements LoggingMXBean {
private static LogManager logManager = LogManager.getLogManager();
/** Constructor of Logging which is the implementation class
* of LoggingMXBean.
*/
Logging() {
}
public List<String> getLoggerNames() {
Enumeration<String> loggers = logManager.getLoggerNames();
ArrayList<String> array = new ArrayList<>();
for (; loggers.hasMoreElements();) {
array.add(loggers.nextElement());
}
return array;
}
private static String EMPTY_STRING = "";
public String getLoggerLevel(String loggerName) {
Logger l = logManager.getLogger(loggerName);
if (l == null) {
return null;
}
Level level = l.getLevel();
if (level == null) {
return EMPTY_STRING;
} else {
return level.getLevelName();
}
}
public void setLoggerLevel(String loggerName, String levelName) {
if (loggerName == null) {
throw new NullPointerException("loggerName is null");
}
Logger logger = logManager.getLogger(loggerName);
if (logger == null) {
throw new IllegalArgumentException("Logger " + loggerName +
"does not exist");
}
Level level = null;
if (levelName != null) {
// parse will throw IAE if logLevel is invalid
level = Level.findLevel(levelName);
if (level == null) {
throw new IllegalArgumentException("Unknown level \"" + levelName + "\"");
}
}
logger.setLevel(level);
}
public String getParentLoggerName( String loggerName ) {
Logger l = logManager.getLogger( loggerName );
if (l == null) {
return null;
}
Logger p = l.getParent();
if (p == null) {
// root logger
return EMPTY_STRING;
} else {
return p.getName();
}
}
}