1/* 2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26package jdk.nashorn.internal.runtime.options; 27 28import java.util.Collections; 29import java.util.HashMap; 30import java.util.Locale; 31import java.util.Map; 32import java.util.Map.Entry; 33import java.util.logging.Level; 34 35/** 36 * Class that collects logging options like --log=compiler:finest,fields,recompile:fine into 37 * a map form that can be used to instantiate loggers in the Global object on demand 38 */ 39public class LoggingOption extends KeyValueOption { 40 41 /** 42 * Logging info. Basically a logger name maps to this, 43 * which is a tuple of log level and the "is quiet" flag, 44 * which is a special log level used to collect RuntimeEvents 45 * only, but not output anything 46 */ 47 public static class LoggerInfo { 48 private final Level level; 49 private final boolean isQuiet; 50 51 LoggerInfo(final Level level, final boolean isQuiet) { 52 this.level = level; 53 this.isQuiet = isQuiet; 54 } 55 56 /** 57 * Get the log level 58 * @return log level 59 */ 60 public Level getLevel() { 61 return level; 62 } 63 64 /** 65 * Get the quiet flag 66 * @return true if quiet flag is set 67 */ 68 public boolean isQuiet() { 69 return isQuiet; 70 } 71 } 72 73 private final Map<String, LoggerInfo> loggers = new HashMap<>(); 74 75 LoggingOption(final String value) { 76 super(value); 77 initialize(getValues()); 78 } 79 80 /** 81 * Return the logger info collected from this command line option 82 * 83 * @return map of logger name to logger info 84 */ 85 public Map<String, LoggerInfo> getLoggers() { 86 return Collections.unmodifiableMap(loggers); 87 } 88 89 /** 90 * Initialization function that is called to instantiate the logging system. It takes 91 * logger names (keys) and logging labels respectively 92 * 93 * @param map a map where the key is a logger name and the value a logging level 94 * @throws IllegalArgumentException if level or names cannot be parsed 95 */ 96 private void initialize(final Map<String, String> logMap) throws IllegalArgumentException { 97 try { 98 for (final Entry<String, String> entry : logMap.entrySet()) { 99 Level level; 100 final String name = lastPart(entry.getKey()); 101 final String levelString = entry.getValue().toUpperCase(Locale.ENGLISH); 102 final boolean isQuiet; 103 104 if ("".equals(levelString)) { 105 level = Level.INFO; 106 isQuiet = false; 107 } else if ("QUIET".equals(levelString)) { 108 level = Level.INFO; 109 isQuiet = true; 110 } else { 111 level = Level.parse(levelString); 112 isQuiet = false; 113 } 114 115 loggers.put(name, new LoggerInfo(level, isQuiet)); 116 } 117 } catch (final IllegalArgumentException | SecurityException e) { 118 throw e; 119 } 120 } 121 122 123 124 private static String lastPart(final String packageName) { 125 final String[] parts = packageName.split("\\."); 126 if (parts.length == 0) { 127 return packageName; 128 } 129 return parts[parts.length - 1]; 130 } 131 132 133} 134