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/*
* 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.options;
import java.util.Collections;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.Map.Entry;
import java.util.logging.Level;
/**
* Class that collects logging options like --log=compiler:finest,fields,recompile:fine into
* a map form that can be used to instantiate loggers in the Global object on demand
*/
public class LoggingOption extends KeyValueOption {
/**
* Logging info. Basically a logger name maps to this,
* which is a tuple of log level and the "is quiet" flag,
* which is a special log level used to collect RuntimeEvents
* only, but not output anything
*/
public static class LoggerInfo {
private final Level level;
private final boolean isQuiet;
LoggerInfo(final Level level, final boolean isQuiet) {
this.level = level;
this.isQuiet = isQuiet;
}
/**
* Get the log level
* @return log level
*/
public Level getLevel() {
return level;
}
/**
* Get the quiet flag
* @return true if quiet flag is set
*/
public boolean isQuiet() {
return isQuiet;
}
}
private final Map<String, LoggerInfo> loggers = new HashMap<>();
LoggingOption(final String value) {
super(value);
initialize(getValues());
}
/**
* Return the logger info collected from this command line option
*
* @return map of logger name to logger info
*/
public Map<String, LoggerInfo> getLoggers() {
return Collections.unmodifiableMap(loggers);
}
/**
* Initialization function that is called to instantiate the logging system. It takes
* logger names (keys) and logging labels respectively
*
* @param map a map where the key is a logger name and the value a logging level
* @throws IllegalArgumentException if level or names cannot be parsed
*/
private void initialize(final Map<String, String> logMap) throws IllegalArgumentException {
try {
for (final Entry<String, String> entry : logMap.entrySet()) {
Level level;
final String name = lastPart(entry.getKey());
final String levelString = entry.getValue().toUpperCase(Locale.ENGLISH);
final boolean isQuiet;
if ("".equals(levelString)) {
level = Level.INFO;
isQuiet = false;
} else if ("QUIET".equals(levelString)) {
level = Level.INFO;
isQuiet = true;
} else {
level = Level.parse(levelString);
isQuiet = false;
}
loggers.put(name, new LoggerInfo(level, isQuiet));
}
} catch (final IllegalArgumentException | SecurityException e) {
throw e;
}
}
private static String lastPart(final String packageName) {
final String[] parts = packageName.split("\\.");
if (parts.length == 0) {
return packageName;
}
return parts[parts.length - 1];
}
}
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