src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/logging/DebugLogger.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2010, 2013, 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 jdk.nashorn.internal.runtime.logging;

 import java.io.PrintWriter;
 import java.security.AccessControlContext;
 import java.security.AccessController;
 import java.security.Permissions;
 import java.security.PrivilegedAction;
 import java.security.ProtectionDomain;
 import java.util.logging.ConsoleHandler;
 import java.util.logging.Formatter;
 import java.util.logging.Handler;
 import java.util.logging.Level;
 import java.util.logging.LogRecord;
 import java.util.logging.Logger;
 import java.util.logging.LoggingPermission;
 import jdk.nashorn.internal.objects.Global;
 import jdk.nashorn.internal.runtime.Context;
 import jdk.nashorn.internal.runtime.ScriptFunction;
 import jdk.nashorn.internal.runtime.ScriptObject;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
 import jdk.nashorn.internal.runtime.events.RuntimeEvent;

 /**
  * Wrapper class for Logging system. This is how you are supposed to register a logger and use it
  */

 public final class DebugLogger {

     /** Disabled logger used for all loggers that need an instance, but shouldn't output anything */
     public static final DebugLogger DISABLED_LOGGER = new DebugLogger("disabled", Level.OFF, false);

     private final Logger  logger;
     private final boolean isEnabled;

     private int indent;

     private static final int INDENT_SPACE = 4;

     /** A quiet logger only logs {@link RuntimeEvent}s and does't output any text, regardless of level */
     private final boolean isQuiet;

     /**
      * Constructor
      *
      * A logger can be paired with a property, e.g. {@code --log:codegen:info} is equivalent to {@code -Dnashorn.codegen.log}
      *
      * @param loggerName  name of logger - this is the unique key with which it can be identified
      * @param loggerLevel level of the logger
      * @param isQuiet     is this a quiet logger, i.e. enabled for things like e.g. RuntimeEvent:s, but quiet otherwise
      */
     public DebugLogger(final String loggerName, final Level loggerLevel, final boolean isQuiet) {
         this.logger  = instantiateLogger(loggerName, loggerLevel);
         this.isQuiet = isQuiet;
         assert logger != null;
         this.isEnabled = getLevel() != Level.OFF;
     }

     private static Logger instantiateLogger(final String name, final Level level) {
         final Logger logger = java.util.logging.Logger.getLogger(name);
         AccessController.doPrivileged(new PrivilegedAction<Void>() {
             @Override
             public Void run() {
                 for (final Handler h : logger.getHandlers()) {
                     logger.removeHandler(h);
                 }

                 logger.setLevel(level);
                 logger.setUseParentHandlers(false);
                 final Handler c = new ConsoleHandler();

                 c.setFormatter(new Formatter() {
                     @Override
                     public String format(final LogRecord record) {
                         final StringBuilder sb = new StringBuilder();

                         sb.append('[')
                         .append(record.getLoggerName())
                         .append("] ")
                         .append(record.getMessage())
                         .append('\n');

                         return sb.toString();
                     }
                 });
                 logger.addHandler(c);
                 c.setLevel(level);
                 return null;
             }
         }, createLoggerControlAccCtxt());

         return logger;
     }

     /**
      * Do not currently support chaining this with parent logger. Logger level null
      * means disabled
      * @return level
      */
     public Level getLevel() {
         return logger.getLevel() == null ? Level.OFF : logger.getLevel();
     }

     /**
      * Get the output writer for the logger. Loggers always default to
      * stderr for output as they are used mainly to output debug info
      *
      * Can be inherited so this should not be static.
      *
      * @return print writer for log output.
      */
     @SuppressWarnings("static-method")
     public PrintWriter getOutputStream() {
         return Context.getCurrentErr();
     }

     /**
      * Add quotes around a string
      * @param str string
      * @return quoted string
      */
     public static String quote(final String str) {
         if (str.isEmpty()) {
             return "''";
         }

         char startQuote = '\0';
         char endQuote   = '\0';
         char quote      = '\0';

         if (str.startsWith("\\") || str.startsWith("\"")) {
             startQuote = str.charAt(0);
         }
         if (str.endsWith("\\") || str.endsWith("\"")) {
             endQuote = str.charAt(str.length() - 1);
         }

         if (startQuote == '\0' || endQuote == '\0') {
             quote = startQuote == '\0' ? endQuote : startQuote;
         }
         if (quote == '\0') {
             quote = '\'';
         }

         return (startQuote == '\0' ? quote : startQuote) + str + (endQuote == '\0' ? quote : endQuote);
     }

     /**
      * Check if the logger is enabled
      * @return true if enabled
      */
     public boolean isEnabled() {
         return isEnabled;
     }

     /**
      * Check if the logger is enabled
      * @param logger logger to check, null will return false
      * @return true if enabled
      */
     public static boolean isEnabled(final DebugLogger logger) {
         return logger != null && logger.isEnabled();
     }

     /**
      * If you want to change the indent level of your logger, call indent with a new position.
      * Positions start at 0 and are increased by one for a new "tab"
      *
      * @param pos indent position
      */
     public void indent(final int pos) {
         if (isEnabled) {
             indent += pos * INDENT_SPACE;
         }
     }

     /**
      * Add an indent position
      */
     public void indent() {
         indent += INDENT_SPACE;
     }

     /**
      * Unindent a position
      */
     public void unindent() {
         indent -= INDENT_SPACE;
         if (indent < 0) {
             indent = 0;
         }
     }

     private static void logEvent(final RuntimeEvent<?> event) {
         if (event != null) {
             final Global global = Context.getGlobal();
             if (global.has("Debug")) {
                 final ScriptObject debug = (ScriptObject)global.get("Debug");
                 final ScriptFunction addRuntimeEvent = (ScriptFunction)debug.get("addRuntimeEvent");
                 ScriptRuntime.apply(addRuntimeEvent, debug, event);
             }
         }
     }

     /**
      * Check if the event of given level will be logged.
      * @see java.util.logging.Level
      *
      * @param level logging level
      * @return true if event of given level will be logged.
      */
     public boolean isLoggable(final Level level) {
         return logger.isLoggable(level);
     }

     /**
      * Shorthand for outputting a log string as log level {@link java.util.logging.Level#FINEST} on this logger
      * @param str the string to log
      */
     public void finest(final String str) {
         log(Level.FINEST, str);
     }

     /**
      * Shorthand for outputting a log string as log level {@link java.util.logging.Level#FINEST} on this logger
      * @param event optional runtime event to log
      * @param str the string to log
      */
     public void finest(final RuntimeEvent<?> event, final String str) {
         finest(str);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINEST} on this logger
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void finest(final Object... objs) {
         log(Level.FINEST, objs);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINEST} on this logger
      * @param event optional runtime event to log
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void finest(final RuntimeEvent<?> event, final Object... objs) {
         finest(objs);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINER} on this logger
      * @param str the string to log
      */
     public void finer(final String str) {
         log(Level.FINER, str);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINER} on this logger
      * @param event optional runtime event to log
      * @param str the string to log
      */
     public void finer(final RuntimeEvent<?> event, final String str) {
         finer(str);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINER} on this logger
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void finer(final Object... objs) {
         log(Level.FINER, objs);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINER} on this logger
      * @param event optional runtime event to log
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void finer(final RuntimeEvent<?> event, final Object... objs) {
         finer(objs);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINE} on this logger
      * @param str the string to log
      */
     public void fine(final String str) {
         log(Level.FINE, str);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINE} on this logger
      * @param event optional runtime event to log
      * @param str the string to log
      */
     public void fine(final RuntimeEvent<?> event, final String str) {
         fine(str);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINE} on this logger
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void fine(final Object... objs) {
         log(Level.FINE, objs);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINE} on this logger
      * @param event optional runtime event to log
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void fine(final RuntimeEvent<?> event, final Object... objs) {
         fine(objs);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#CONFIG} on this logger
      * @param str the string to log
      */
     public void config(final String str) {
         log(Level.CONFIG, str);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#CONFIG} on this logger
      * @param event optional runtime event to log
      * @param str the string to log
      */
     public void config(final RuntimeEvent<?> event, final String str) {
         config(str);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#CONFIG} on this logger
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void config(final Object... objs) {
         log(Level.CONFIG, objs);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#CONFIG} on this logger
      * @param event optional runtime event to log
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void config(final RuntimeEvent<?> event, final Object... objs) {
         config(objs);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#INFO} on this logger
      * @param str the string to log
      */
     public void info(final String str) {
         log(Level.INFO, str);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#INFO} on this logger
      * @param event optional runtime event to log
      * @param str the string to log
      */
     public void info(final RuntimeEvent<?> event, final String str) {
         info(str);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINE} on this logger
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void info(final Object... objs) {
         log(Level.INFO, objs);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINE} on this logger
      * @param event optional runtime event to log
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void info(final RuntimeEvent<?> event, final Object... objs) {
         info(objs);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#WARNING} on this logger
      * @param str the string to log
      */
     public void warning(final String str) {
         log(Level.WARNING, str);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#WARNING} on this logger
      * @param event optional runtime event to log
      * @param str the string to log
      */
     public void warning(final RuntimeEvent<?> event, final String str) {
         warning(str);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINE} on this logger
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void warning(final Object... objs) {
         log(Level.WARNING, objs);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINE} on this logger
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      * @param event optional runtime event to log
      */
     public void warning(final RuntimeEvent<?> event, final Object... objs) {
         warning(objs);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#SEVERE} on this logger
      * @param str the string to log
      */
     public void severe(final String str) {
         log(Level.SEVERE, str);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#SEVERE} on this logger
      * @param str the string to log
      * @param event optional runtime event to log
      */
     public void severe(final RuntimeEvent<?> event, final String str) {
         severe(str);
         logEvent(event);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#SEVERE} on this logger
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void severe(final Object... objs) {
         log(Level.SEVERE, objs);
     }

     /**
      * Shorthand for outputting a log string as log level
      * {@link java.util.logging.Level#FINE} on this logger
      * @param event optional runtime event to log
      * @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
      */
     public void severe(final RuntimeEvent<?> event, final Object... objs) {
         severe(objs);
         logEvent(event);
     }

     /**
      * Output log line on this logger at a given level of verbosity
      * @see java.util.logging.Level
      *
      * @param level minimum log level required for logging to take place
      * @param str   string to log
      */
     public void log(final Level level, final String str) {
         if (isEnabled && !isQuiet && logger.isLoggable(level)) {
             final StringBuilder sb = new StringBuilder();
             for (int i = 0 ; i < indent ; i++) {
                 sb.append(' ');
             }
             sb.append(str);
             logger.log(level, sb.toString());
         }
     }

     /**
      * Output log line on this logger at a given level of verbosity
      * @see java.util.logging.Level
      *
      * @param level minimum log level required for logging to take place
      * @param objs  objects for which to invoke toString and concatenate to log
      */
     public void log(final Level level, final Object... objs) {
         if (isEnabled && !isQuiet && logger.isLoggable(level)) {
             final StringBuilder sb = new StringBuilder();
             for (final Object obj : objs) {
                 sb.append(obj);
             }
             log(level, sb.toString());
         }
     }

     /**
      * Access control context for logger level and instantiation permissions
      * @return access control context
      */
     private static AccessControlContext createLoggerControlAccCtxt() {
         final Permissions perms = new Permissions();
         perms.add(new LoggingPermission("control", null));
         return new AccessControlContext(new ProtectionDomain[] { new ProtectionDomain(null, perms) });
     }

 }
	/*
	* Copyright (c) 2010, 2013, 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 jdk.nashorn.internal.runtime.logging;

	import java.io.PrintWriter;
	import java.security.AccessControlContext;
	import java.security.AccessController;
	import java.security.Permissions;
	import java.security.PrivilegedAction;
	import java.security.ProtectionDomain;
	import java.util.logging.ConsoleHandler;
	import java.util.logging.Formatter;
	import java.util.logging.Handler;
	import java.util.logging.Level;
	import java.util.logging.LogRecord;
	import java.util.logging.Logger;
	import java.util.logging.LoggingPermission;
	import jdk.nashorn.internal.objects.Global;
	import jdk.nashorn.internal.runtime.Context;
	import jdk.nashorn.internal.runtime.ScriptFunction;
	import jdk.nashorn.internal.runtime.ScriptObject;
	import jdk.nashorn.internal.runtime.ScriptRuntime;
	import jdk.nashorn.internal.runtime.events.RuntimeEvent;

	/**
	* Wrapper class for Logging system. This is how you are supposed to register a logger and use it
	*/

	public final class DebugLogger {

	/** Disabled logger used for all loggers that need an instance, but shouldn't output anything */
	public static final DebugLogger DISABLED_LOGGER = new DebugLogger("disabled", Level.OFF, false);

	private final Logger logger;
	private final boolean isEnabled;

	private int indent;

	private static final int INDENT_SPACE = 4;

	/** A quiet logger only logs {@link RuntimeEvent}s and does't output any text, regardless of level */
	private final boolean isQuiet;

	/**
	* Constructor
	*
	* A logger can be paired with a property, e.g. {@code --log:codegen:info} is equivalent to {@code -Dnashorn.codegen.log}
	*
	* @param loggerName name of logger - this is the unique key with which it can be identified
	* @param loggerLevel level of the logger
	* @param isQuiet is this a quiet logger, i.e. enabled for things like e.g. RuntimeEvent:s, but quiet otherwise
	*/
	public DebugLogger(final String loggerName, final Level loggerLevel, final boolean isQuiet) {
	this.logger = instantiateLogger(loggerName, loggerLevel);
	this.isQuiet = isQuiet;
	assert logger != null;
	this.isEnabled = getLevel() != Level.OFF;
	}

	private static Logger instantiateLogger(final String name, final Level level) {
	final Logger logger = java.util.logging.Logger.getLogger(name);
	AccessController.doPrivileged(new PrivilegedAction<Void>() {
	@Override
	public Void run() {
	for (final Handler h : logger.getHandlers()) {
	logger.removeHandler(h);
	}

	logger.setLevel(level);
	logger.setUseParentHandlers(false);
	final Handler c = new ConsoleHandler();

	c.setFormatter(new Formatter() {
	@Override
	public String format(final LogRecord record) {
	final StringBuilder sb = new StringBuilder();

	sb.append('[')
	.append(record.getLoggerName())
	.append("] ")
	.append(record.getMessage())
	.append('\n');

	return sb.toString();
	}
	});
	logger.addHandler(c);
	c.setLevel(level);
	return null;
	}
	}, createLoggerControlAccCtxt());

	return logger;
	}

	/**
	* Do not currently support chaining this with parent logger. Logger level null
	* means disabled
	* @return level
	*/
	public Level getLevel() {
	return logger.getLevel() == null ? Level.OFF : logger.getLevel();
	}

	/**
	* Get the output writer for the logger. Loggers always default to
	* stderr for output as they are used mainly to output debug info
	*
	* Can be inherited so this should not be static.
	*
	* @return print writer for log output.
	*/
	@SuppressWarnings("static-method")
	public PrintWriter getOutputStream() {
	return Context.getCurrentErr();
	}

	/**
	* Add quotes around a string
	* @param str string
	* @return quoted string
	*/
	public static String quote(final String str) {
	if (str.isEmpty()) {
	return "''";
	}

	char startQuote = '\0';
	char endQuote = '\0';
	char quote = '\0';

	if (str.startsWith("\\") \|\| str.startsWith("\"")) {
	startQuote = str.charAt(0);
	}
	if (str.endsWith("\\") \|\| str.endsWith("\"")) {
	endQuote = str.charAt(str.length() - 1);
	}

	if (startQuote == '\0' \|\| endQuote == '\0') {
	quote = startQuote == '\0' ? endQuote : startQuote;
	}
	if (quote == '\0') {
	quote = '\'';
	}

	return (startQuote == '\0' ? quote : startQuote) + str + (endQuote == '\0' ? quote : endQuote);
	}

	/**
	* Check if the logger is enabled
	* @return true if enabled
	*/
	public boolean isEnabled() {
	return isEnabled;
	}

	/**
	* Check if the logger is enabled
	* @param logger logger to check, null will return false
	* @return true if enabled
	*/
	public static boolean isEnabled(final DebugLogger logger) {
	return logger != null && logger.isEnabled();
	}

	/**
	* If you want to change the indent level of your logger, call indent with a new position.
	* Positions start at 0 and are increased by one for a new "tab"
	*
	* @param pos indent position
	*/
	public void indent(final int pos) {
	if (isEnabled) {
	indent += pos * INDENT_SPACE;
	}
	}

	/**
	* Add an indent position
	*/
	public void indent() {
	indent += INDENT_SPACE;
	}

	/**
	* Unindent a position
	*/
	public void unindent() {
	indent -= INDENT_SPACE;
	if (indent < 0) {
	indent = 0;
	}
	}

	private static void logEvent(final RuntimeEvent<?> event) {
	if (event != null) {
	final Global global = Context.getGlobal();
	if (global.has("Debug")) {
	final ScriptObject debug = (ScriptObject)global.get("Debug");
	final ScriptFunction addRuntimeEvent = (ScriptFunction)debug.get("addRuntimeEvent");
	ScriptRuntime.apply(addRuntimeEvent, debug, event);
	}
	}
	}

	/**
	* Check if the event of given level will be logged.
	* @see java.util.logging.Level
	*
	* @param level logging level
	* @return true if event of given level will be logged.
	*/
	public boolean isLoggable(final Level level) {
	return logger.isLoggable(level);
	}

	/**
	* Shorthand for outputting a log string as log level {@link java.util.logging.Level#FINEST} on this logger
	* @param str the string to log
	*/
	public void finest(final String str) {
	log(Level.FINEST, str);
	}

	/**
	* Shorthand for outputting a log string as log level {@link java.util.logging.Level#FINEST} on this logger
	* @param event optional runtime event to log
	* @param str the string to log
	*/
	public void finest(final RuntimeEvent<?> event, final String str) {
	finest(str);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINEST} on this logger
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void finest(final Object... objs) {
	log(Level.FINEST, objs);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINEST} on this logger
	* @param event optional runtime event to log
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void finest(final RuntimeEvent<?> event, final Object... objs) {
	finest(objs);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINER} on this logger
	* @param str the string to log
	*/
	public void finer(final String str) {
	log(Level.FINER, str);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINER} on this logger
	* @param event optional runtime event to log
	* @param str the string to log
	*/
	public void finer(final RuntimeEvent<?> event, final String str) {
	finer(str);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINER} on this logger
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void finer(final Object... objs) {
	log(Level.FINER, objs);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINER} on this logger
	* @param event optional runtime event to log
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void finer(final RuntimeEvent<?> event, final Object... objs) {
	finer(objs);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINE} on this logger
	* @param str the string to log
	*/
	public void fine(final String str) {
	log(Level.FINE, str);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINE} on this logger
	* @param event optional runtime event to log
	* @param str the string to log
	*/
	public void fine(final RuntimeEvent<?> event, final String str) {
	fine(str);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINE} on this logger
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void fine(final Object... objs) {
	log(Level.FINE, objs);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINE} on this logger
	* @param event optional runtime event to log
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void fine(final RuntimeEvent<?> event, final Object... objs) {
	fine(objs);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#CONFIG} on this logger
	* @param str the string to log
	*/
	public void config(final String str) {
	log(Level.CONFIG, str);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#CONFIG} on this logger
	* @param event optional runtime event to log
	* @param str the string to log
	*/
	public void config(final RuntimeEvent<?> event, final String str) {
	config(str);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#CONFIG} on this logger
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void config(final Object... objs) {
	log(Level.CONFIG, objs);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#CONFIG} on this logger
	* @param event optional runtime event to log
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void config(final RuntimeEvent<?> event, final Object... objs) {
	config(objs);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#INFO} on this logger
	* @param str the string to log
	*/
	public void info(final String str) {
	log(Level.INFO, str);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#INFO} on this logger
	* @param event optional runtime event to log
	* @param str the string to log
	*/
	public void info(final RuntimeEvent<?> event, final String str) {
	info(str);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINE} on this logger
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void info(final Object... objs) {
	log(Level.INFO, objs);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINE} on this logger
	* @param event optional runtime event to log
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void info(final RuntimeEvent<?> event, final Object... objs) {
	info(objs);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#WARNING} on this logger
	* @param str the string to log
	*/
	public void warning(final String str) {
	log(Level.WARNING, str);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#WARNING} on this logger
	* @param event optional runtime event to log
	* @param str the string to log
	*/
	public void warning(final RuntimeEvent<?> event, final String str) {
	warning(str);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINE} on this logger
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void warning(final Object... objs) {
	log(Level.WARNING, objs);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINE} on this logger
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	* @param event optional runtime event to log
	*/
	public void warning(final RuntimeEvent<?> event, final Object... objs) {
	warning(objs);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#SEVERE} on this logger
	* @param str the string to log
	*/
	public void severe(final String str) {
	log(Level.SEVERE, str);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#SEVERE} on this logger
	* @param str the string to log
	* @param event optional runtime event to log
	*/
	public void severe(final RuntimeEvent<?> event, final String str) {
	severe(str);
	logEvent(event);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#SEVERE} on this logger
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void severe(final Object... objs) {
	log(Level.SEVERE, objs);
	}

	/**
	* Shorthand for outputting a log string as log level
	* {@link java.util.logging.Level#FINE} on this logger
	* @param event optional runtime event to log
	* @param objs object array to log - use this to perform lazy concatenation to avoid unconditional toString overhead
	*/
	public void severe(final RuntimeEvent<?> event, final Object... objs) {
	severe(objs);
	logEvent(event);
	}

	/**
	* Output log line on this logger at a given level of verbosity
	* @see java.util.logging.Level
	*
	* @param level minimum log level required for logging to take place
	* @param str string to log
	*/
	public void log(final Level level, final String str) {
	if (isEnabled && !isQuiet && logger.isLoggable(level)) {
	final StringBuilder sb = new StringBuilder();
	for (int i = 0 ; i < indent ; i++) {
	sb.append(' ');
	}
	sb.append(str);
	logger.log(level, sb.toString());
	}
	}

	/**
	* Output log line on this logger at a given level of verbosity
	* @see java.util.logging.Level
	*
	* @param level minimum log level required for logging to take place
	* @param objs objects for which to invoke toString and concatenate to log
	*/
	public void log(final Level level, final Object... objs) {
	if (isEnabled && !isQuiet && logger.isLoggable(level)) {
	final StringBuilder sb = new StringBuilder();
	for (final Object obj : objs) {
	sb.append(obj);
	}
	log(level, sb.toString());
	}
	}

	/**
	* Access control context for logger level and instantiation permissions
	* @return access control context
	*/
	private static AccessControlContext createLoggerControlAccCtxt() {
	final Permissions perms = new Permissions();
	perms.add(new LoggingPermission("control", null));
	return new AccessControlContext(new ProtectionDomain[] { new ProtectionDomain(null, perms) });
	}

	}