| Methods Summary |
|---|
| public synchronized boolean | addLogger(java.util.logging.Logger logger)Add a named logger. This does nothing and returns false if a logger
with the same name is already registered.
The Logger factory methods call this method to register each
newly created Logger.
The application should retain its own reference to the Logger
object to avoid it being garbage collected. The LogManager
may only retain a weak reference.
final String name = logger.getName();
if (name == null) {
throw new NullPointerException();
}
Logger old = loggers.get(name);
if (old != null) {
// We already have a registered logger with the given name.
return false;
}
// We're adding a new logger.
// Note that we are creating a strong reference here that will
// keep the Logger in existence indefinitely.
loggers.put(name, logger);
// Apply any initial level defined for the new logger.
Level level = getLevelProperty(name+".level", null);
if (level != null) {
doSetLevel(logger, level);
}
// Do we have a per logger handler too?
// Note: this will add a 200ms penalty
if (getProperty(name+".handlers") != null) {
// This code is taken from the root handler initialization
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
// Add new per logger handlers.
String names[] = parseClassNames(name+".handlers");
for (int i = 0; i < names.length; i++) {
String word = names[i];
try {
Class clz = ClassLoader.getSystemClassLoader().loadClass(word);
Handler h = (Handler) clz.newInstance();
try {
// Check if there is a property defining the
// this handler's level.
String levs = getProperty(word + ".level");
if (levs != null) {
h.setLevel(Level.parse(levs));
}
boolean useParent = getBooleanProperty(name + ".useParentHandlers", true);
if (!useParent) {
getLogger(name).setUseParentHandlers(false);
}
} catch (Exception ex) {
System.err.println("Can't set level for " + word);
// Probably a bad level. Drop through.
}
// Add this Handler to the logger
getLogger(name).addHandler(h);
} catch (Exception ex) {
System.err.println("Can't load log handler \"" + word + "\"");
System.err.println("" + ex);
ex.printStackTrace();
}
}
return null;
}});
} // do we have per logger handlers
// If any of the logger's parents have levels defined,
// make sure they are instantiated.
int ix = 1;
for (;;) {
int ix2 = name.indexOf(".", ix);
if (ix2 < 0) {
break;
}
String pname = name.substring(0,ix2);
if (getProperty(pname+".level") != null) {
// This pname has a level definition. Make sure it exists.
Logger plogger = Logger.getLogger(pname);
}
// While we are walking up the tree I can check for our
// own root logger and get its handlers initialized too with
// the same code
if (getProperty(pname+".handlers") != null) {
final String nname=pname;
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
String names[] = parseClassNames(nname+".handlers");
for (int i = 0; i < names.length; i++) {
String word = names[i];
try {
Class clz = ClassLoader.getSystemClassLoader().loadClass(word);
Handler h = (Handler) clz.newInstance();
try {
// Check if there is a property defining the
// handler's level.
String levs = getProperty(word + ".level");
if (levs != null) {
h.setLevel(Level.parse(levs));
}
} catch (Exception ex) {
System.err.println("Can't set level for " + word);
// Probably a bad level. Drop through.
}
if (getLogger(nname) == null ) {
Logger nplogger=Logger.getLogger(nname);
addLogger(nplogger);
}
boolean useParent = getBooleanProperty(nname + ".useParentHandlers", true);
if (!useParent) {
getLogger(nname).setUseParentHandlers(false);
}
} catch (Exception ex) {
System.err.println("Can't load log handler \"" + word + "\"");
System.err.println("" + ex);
ex.printStackTrace();
}
}
return null;
}});
} //found a parent handler
ix = ix2+1;
}
// Find the new node and its parent.
LogNode node = findNode(name);
node.logger = logger;
Logger parent = null;
LogNode nodep = node.parent;
while (nodep != null) {
if (nodep.logger != null) {
parent = nodep.logger;
break;
}
nodep = nodep.parent;
}
if (parent != null) {
doSetParent(logger, parent);
}
// Walk over the children and tell them we are their new parent.
node.walkAndSetParent(logger);
return true;
|
| public void | addPropertyChangeListener(java.beans.PropertyChangeListener l)Adds an event listener to be invoked when the logging
properties are re-read. Adding multiple instances of
the same event Listener results in multiple entries
in the property event listener table.
if (l == null) {
throw new NullPointerException();
}
checkAccess();
changes.addPropertyChangeListener(l);
|
| public void | checkAccess()Check that the current context is trusted to modify the logging
configuration. This requires LoggingPermission("control").
If the check fails we throw a SecurityException, otherwise
we return normally.
SecurityManager sm = System.getSecurityManager();
if (sm == null) {
return;
}
sm.checkPermission(ourPermission);
|
| private static void | doSetLevel(java.util.logging.Logger logger, java.util.logging.Level level)
SecurityManager sm = System.getSecurityManager();
if (sm == null) {
// There is no security manager, so things are easy.
logger.setLevel(level);
return;
}
// There is a security manager. Raise privilege before
// calling setLevel.
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
logger.setLevel(level);
return null;
}});
|
| private static void | doSetParent(java.util.logging.Logger logger, java.util.logging.Logger parent)
SecurityManager sm = System.getSecurityManager();
if (sm == null) {
// There is no security manager, so things are easy.
logger.setParent(parent);
return;
}
// There is a security manager. Raise privilege before
// calling setParent.
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
logger.setParent(parent);
return null;
}});
|
| private java.util.logging.LogManager$LogNode | findNode(java.lang.String name)
if (name == null || name.equals("")) {
return root;
}
LogNode node = root;
while (name.length() > 0) {
int ix = name.indexOf(".");
String head;
if (ix > 0) {
head = name.substring(0,ix);
name = name.substring(ix+1);
} else {
head = name;
name = "";
}
if (node.children == null) {
node.children = new HashMap<Object,Object>();
}
LogNode child = (LogNode)node.children.get(head);
if (child == null) {
child = new LogNode(node);
node.children.put(head, child);
}
node = child;
}
return node;
|
| boolean | getBooleanProperty(java.lang.String name, boolean defaultValue)
String val = getProperty(name);
if (val == null) {
return defaultValue;
}
val = val.toLowerCase();
if (val.equals("true") || val.equals("1")) {
return true;
} else if (val.equals("false") || val.equals("0")) {
return false;
}
return defaultValue;
|
| java.util.logging.Filter | getFilterProperty(java.lang.String name, java.util.logging.Filter defaultValue)
String val = getProperty(name);
try {
if (val != null) {
Class clz = ClassLoader.getSystemClassLoader().loadClass(val);
return (Filter) clz.newInstance();
}
} catch (Exception ex) {
// We got one of a variety of exceptions in creating the
// class or creating an instance.
// Drop through.
}
// We got an exception. Return the defaultValue.
return defaultValue;
|
| java.util.logging.Formatter | getFormatterProperty(java.lang.String name, java.util.logging.Formatter defaultValue)
String val = getProperty(name);
try {
if (val != null) {
Class clz = ClassLoader.getSystemClassLoader().loadClass(val);
return (Formatter) clz.newInstance();
}
} catch (Exception ex) {
// We got one of a variety of exceptions in creating the
// class or creating an instance.
// Drop through.
}
// We got an exception. Return the defaultValue.
return defaultValue;
|
| int | getIntProperty(java.lang.String name, int defaultValue)
String val = getProperty(name);
if (val == null) {
return defaultValue;
}
try {
return Integer.parseInt(val.trim());
} catch (Exception ex) {
return defaultValue;
}
|
| java.util.logging.Level | getLevelProperty(java.lang.String name, java.util.logging.Level defaultValue)
String val = getProperty(name);
if (val == null) {
return defaultValue;
}
try {
return Level.parse(val.trim());
} catch (Exception ex) {
return defaultValue;
}
|
| public static java.util.logging.LogManager | getLogManager()Return the global LogManager object.
if (manager != null) {
manager.readPrimordialConfiguration();
}
return manager;
|
| public synchronized java.util.logging.Logger | getLogger(java.lang.String name)Method to find a named logger.
Note that since untrusted code may create loggers with
arbitrary names this method should not be relied on to
find Loggers for security sensitive logging.
return loggers.get(name);
|
| public synchronized java.util.Enumeration | getLoggerNames()Get an enumeration of known logger names.
Note: Loggers may be added dynamically as new classes are loaded.
This method only reports on the loggers that are currently registered.
return loggers.keys();
|
| public static synchronized java.util.logging.LoggingMXBean | getLoggingMXBean()Returns LoggingMXBean for managing loggers.
The LoggingMXBean can also obtained from the
{@link java.lang.management.ManagementFactory#getPlatformMBeanServer
platform MBeanServer} method.
if (loggingMXBean == null) {
loggingMXBean = new Logging();
}
return loggingMXBean;
|
| public java.lang.String | getProperty(java.lang.String name)Get the value of a logging property.
The method returns null if the property is not found.
return props.getProperty(name);
|
| java.lang.String | getStringProperty(java.lang.String name, java.lang.String defaultValue)
String val = getProperty(name);
if (val == null) {
return defaultValue;
}
return val.trim();
|
| private synchronized void | initializeGlobalHandlers()
if (initializedGlobalHandlers) {
return;
}
initializedGlobalHandlers = true;
if (deathImminent) {
// Aaargh...
// The VM is shutting down and our exit hook has been called.
// Avoid allocating global handlers.
return;
}
// We need to raise privilege here. All our decisions will
// be made based on the logging configuration, which can
// only be modified by trusted code.
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
// Add new global handlers.
String names[] = parseClassNames("handlers");
for (int i = 0; i < names.length; i++) {
String word = names[i];
try {
Class clz = ClassLoader.getSystemClassLoader().loadClass(word);
Handler h = (Handler) clz.newInstance();
try {
// Check if there is a property defining the
// handler's level.
String levs = getProperty(word + ".level");
if (levs != null) {
h.setLevel(Level.parse(levs));
}
} catch (Exception ex) {
System.err.println("Can't set level for " + word);
// Probably a bad level. Drop through.
}
rootLogger.addHandler(h);
} catch (Exception ex) {
System.err.println("Can't load log handler \"" + word + "\"");
System.err.println("" + ex);
ex.printStackTrace();
}
}
return null;
}});
|
| private java.lang.String[] | parseClassNames(java.lang.String propertyName)
String hands = getProperty(propertyName);
if (hands == null) {
return new String[0];
}
hands = hands.trim();
int ix = 0;
Vector<String> result = new Vector<String>();
while (ix < hands.length()) {
int end = ix;
while (end < hands.length()) {
if (Character.isWhitespace(hands.charAt(end))) {
break;
}
if (hands.charAt(end) == ',") {
break;
}
end++;
}
String word = hands.substring(ix, end);
ix = end+1;
word = word.trim();
if (word.length() == 0) {
continue;
}
result.add(word);
}
return result.toArray(new String[result.size()]);
|
| public void | readConfiguration()Reinitialize the logging properties and reread the logging configuration.
The same rules are used for locating the configuration properties
as are used at startup. So normally the logging properties will
be re-read from the same file that was used at startup.
Any log level definitions in the new configuration file will be
applied using Logger.setLevel(), if the target Logger exists.
A PropertyChangeEvent will be fired after the properties are read.
checkAccess();
// if a configuration class is specified, load it and use it.
String cname = System.getProperty("java.util.logging.config.class");
if (cname != null) {
try {
// Instantiate the named class. It is its constructor's
// responsibility to initialize the logging configuration, by
// calling readConfiguration(InputStream) with a suitable stream.
try {
Class clz = ClassLoader.getSystemClassLoader().loadClass(cname);
clz.newInstance();
return;
} catch (ClassNotFoundException ex) {
Class clz = Thread.currentThread().getContextClassLoader().loadClass(cname);
clz.newInstance();
return;
}
} catch (Exception ex) {
System.err.println("Logging configuration class \"" + cname + "\" failed");
System.err.println("" + ex);
// keep going and useful config file.
}
}
String fname = System.getProperty("java.util.logging.config.file");
if (fname == null) {
fname = System.getProperty("java.home");
if (fname == null) {
throw new Error("Can't find java.home ??");
}
File f = new File(fname, "lib");
f = new File(f, "logging.properties");
fname = f.getCanonicalPath();
}
InputStream in = new FileInputStream(fname);
BufferedInputStream bin = new BufferedInputStream(in);
try {
readConfiguration(bin);
} finally {
if (in != null) {
in.close();
}
}
|
| public void | readConfiguration(java.io.InputStream ins)Reinitialize the logging properties and reread the logging configuration
from the given stream, which should be in java.util.Properties format.
A PropertyChangeEvent will be fired after the properties are read.
Any log level definitions in the new configuration file will be
applied using Logger.setLevel(), if the target Logger exists.
checkAccess();
reset();
// Load the properties
props.load(ins);
// Instantiate new configuration objects.
String names[] = parseClassNames("config");
for (int i = 0; i < names.length; i++) {
String word = names[i];
try {
Class clz = ClassLoader.getSystemClassLoader().loadClass(word);
clz.newInstance();
} catch (Exception ex) {
System.err.println("Can't load config class \"" + word + "\"");
System.err.println("" + ex);
// ex.printStackTrace();
}
}
// Set levels on any pre-existing loggers, based on the new properties.
setLevelsOnExistingLoggers();
// Notify any interested parties that our properties have changed.
changes.firePropertyChange(null, null, null);
// Note that we need to reinitialize global handles when
// they are first referenced.
synchronized (this) {
initializedGlobalHandlers = false;
}
|
| private void | readPrimordialConfiguration()
if (!readPrimordialConfiguration) {
synchronized (this) {
if (!readPrimordialConfiguration) {
// If System.in/out/err are null, it's a good
// indication that we're still in the
// bootstrapping phase
if (System.out == null) {
return;
}
readPrimordialConfiguration = true;
try {
AccessController.doPrivileged(new PrivilegedExceptionAction() {
public Object run() throws Exception {
readConfiguration();
return null;
}
});
} catch (Exception ex) {
// System.err.println("Can't read logging configuration:");
// ex.printStackTrace();
}
}
}
}
|
| public void | removePropertyChangeListener(java.beans.PropertyChangeListener l)Removes an event listener for property change events.
If the same listener instance has been added to the listener table
through multiple invocations of addPropertyChangeListener,
then an equivalent number of
removePropertyChangeListener invocations are required to remove
all instances of that listener from the listener table.
Returns silently if the given listener is not found.
checkAccess();
changes.removePropertyChangeListener(l);
|
| public void | reset()Reset the logging configuration.
For all named loggers, the reset operation removes and closes
all Handlers and (except for the root logger) sets the level
to null. The root logger's level is set to Level.INFO.
checkAccess();
synchronized (this) {
props = new Properties();
// Since we are doing a reset we no longer want to initialize
// the global handlers, if they haven't been initialized yet.
initializedGlobalHandlers = true;
}
Enumeration enum_ = getLoggerNames();
while (enum_.hasMoreElements()) {
String name = (String)enum_.nextElement();
resetLogger(name);
}
|
| private void | resetLogger(java.lang.String name)
Logger logger = getLogger(name);
if (logger == null) {
return;
}
// Close all the Logger's handlers.
Handler[] targets = logger.getHandlers();
for (int i = 0; i < targets.length; i++) {
Handler h = targets[i];
logger.removeHandler(h);
try {
h.close();
} catch (Exception ex) {
// Problems closing a handler? Keep going...
}
}
if (name != null && name.equals("")) {
// This is the root logger.
logger.setLevel(defaultLevel);
} else {
logger.setLevel(null);
}
|
| private synchronized void | setLevelsOnExistingLoggers()
Enumeration enum_ = props.propertyNames();
while (enum_.hasMoreElements()) {
String key = (String)enum_.nextElement();
if (!key.endsWith(".level")) {
// Not a level definition.
continue;
}
int ix = key.length() - 6;
String name = key.substring(0, ix);
Level level = getLevelProperty(key, null);
if (level == null) {
System.err.println("Bad level value for property: " + key);
continue;
}
Logger l = getLogger(name);
if (l == null) {
continue;
}
l.setLevel(level);
}
|
