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/*
* Copyright (c) 2009, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.javafx.logging;
import java.lang.ref.WeakReference;
import java.util.HashMap;
import java.util.Map;
import java.util.ResourceBundle;
/**
* Platform logger provides an API for the JavaFX components to log
* messages. It is an internal logger intended to be used by JavaFX modules.
*
* The PlatformLogger uses an underlying System.Logger
* obtained by calling {@link java.lang.System.Logger#getLogger(String)}
*
* PlatformLogger implements System.Logger as to facilitiate logging of
* calling class and method.
* Note : JDK internal loggers know to skip any calls from System.Logger
* classes when looking for the calling class / method.
*/
public class PlatformLogger implements System.Logger {
/**
* PlatformLogger logging levels.
*/
public static enum Level {
// The name and value must match that of {@code java.lang.System.Level}s.
// Declare in ascending order of the given value
ALL(System.Logger.Level.ALL),
FINEST(System.Logger.Level.TRACE),
FINER(System.Logger.Level.TRACE),
FINE(System.Logger.Level.DEBUG),
INFO(System.Logger.Level.INFO),
WARNING(System.Logger.Level.WARNING),
SEVERE(System.Logger.Level.ERROR),
OFF(System.Logger.Level.OFF);
final System.Logger.Level systemLevel;
Level(System.Logger.Level systemLevel) {
this.systemLevel = systemLevel;
}
}
private System.Logger.Level getSystemLoggerLevel(Level l) {
switch (l) {
case ALL : return System.Logger.Level.ALL;
case FINEST: return System.Logger.Level.TRACE;
case FINER: return System.Logger.Level.TRACE;
case FINE: return System.Logger.Level.DEBUG;
case INFO: return System.Logger.Level.INFO;
case WARNING: return System.Logger.Level.WARNING;
case SEVERE: return System.Logger.Level.ERROR;
case OFF: return System.Logger.Level.OFF;
default : return System.Logger.Level.ALL;
}
}
// Table of known loggers. Maps names to PlatformLoggers.
private static final Map> loggers =
new HashMap<>();
/**
* Returns a PlatformLogger of a given name.
* @param name the name of the logger
* @return a PlatformLogger
*/
public static synchronized PlatformLogger getLogger(String name) {
PlatformLogger log = null;
WeakReference ref = loggers.get(name);
if (ref != null) {
log = ref.get();
}
if (log == null) {
log = new PlatformLogger(System.getLogger(name));
loggers.put(name, new WeakReference<>(log));
}
return log;
}
private final System.Logger loggerProxy;
protected PlatformLogger(System.Logger loggerProxy) {
this.loggerProxy = loggerProxy;
}
// ------------------------------------------------------------------------
// From System.Logger interface
// ------------------------------------------------------------------------
/**
* Gets the name for this platform logger.
* @return the name of the platform logger.
*/
@Override
public String getName() {
return loggerProxy.getName();
}
@Override
public boolean isLoggable(System.Logger.Level level) {
return loggerProxy.isLoggable(level);
}
@Override
public void log(System.Logger.Level level, ResourceBundle bundle, String format, Object... params) {
loggerProxy.log(level, bundle, format, params);
}
@Override
public void log(System.Logger.Level level, ResourceBundle bundle, String msg, Throwable thrown) {
loggerProxy.log(level, bundle, msg, thrown);
}
// ------------------------------------------------------------------------
/**
* Returns true if a message of the given level would actually
* be logged by this logger.
* @param level the level
* @return whether a message of that level would be logged
*/
public boolean isLoggable(Level level) {
if (level == null) {
throw new NullPointerException();
}
return loggerProxy.isLoggable(getSystemLoggerLevel(level));
}
/**
* Logs a SEVERE message.
* @param msg the message
*/
public void severe(String msg) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.ERROR, msg, (Object[])null);
}
public void severe(String msg, Throwable t) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.ERROR, msg, t);
}
public void severe(String msg, Object... params) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.ERROR, msg, params);
}
/**
* Logs a WARNING message.
* @param msg the message
*/
public void warning(String msg) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.WARNING, msg, (Object[])null);
}
public void warning(String msg, Throwable t) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.WARNING, msg, t);
}
public void warning(String msg, Object... params) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.WARNING, msg, params);
}
/**
* Logs an INFO message.
* @param msg the message
*/
public void info(String msg) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.INFO, msg, (Object[])null);
}
public void info(String msg, Throwable t) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.INFO, msg, t);
}
public void info(String msg, Object... params) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.INFO, msg, params);
}
/**
* Logs a FINE message.
* @param msg the message
*/
public void fine(String msg) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.DEBUG, msg, (Object[])null);
}
public void fine(String msg, Throwable t) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.DEBUG, msg, t);
}
public void fine(String msg, Object... params) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.DEBUG, msg, params);
}
/**
* Logs a FINER message.
* @param msg the message
*/
public void finer(String msg) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.TRACE, msg, (Object[])null);
}
public void finer(String msg, Throwable t) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.TRACE, msg, t);
}
public void finer(String msg, Object... params) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.TRACE, msg, params);
}
/**
* Logs a FINEST message.
* @param msg the message
*/
public void finest(String msg) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.TRACE, msg, (Object[])null);
}
public void finest(String msg, Throwable t) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.TRACE, msg, t);
}
public void finest(String msg, Object... params) {
if (!loggingEnabled) return;
loggerProxy.log(System.Logger.Level.TRACE, msg, params);
}
// Methods for unit tests
private boolean loggingEnabled = true;
public void enableLogging() {
loggingEnabled = true;
};
public void disableLogging() {
loggingEnabled = false;
}
}
