3 * Copyright © 2013 František Kučera (frantovo.cz)
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package info.globalcode.sql.dk.logging;
20 import info.globalcode.sql.dk.Constants;
21 import java.util.logging.ConsoleHandler;
22 import java.util.logging.Handler;
23 import java.util.logging.Level;
24 import java.util.logging.Logger;
27 * Configures logging subsystem.
28 * Usage: java -Djava.util.logging.config.class=info.globalcode.sql.dk.logging.LoggerInitializer …
30 * @author Ing. František Kučera (frantovo.cz)
32 public class LoggerInitializer {
34 private static final Logger log = Logger.getLogger(LoggerInitializer.class.getName());
35 public static final String LEVEL_PROPERTY = LoggerInitializer.class.getName() + ".level";
36 private static final Level DEFAULT_LEVEL = Level.INFO;
38 public LoggerInitializer() {
39 Logger logger = Logger.getLogger(Constants.JAVA_PACKAGE);
40 ConsoleHandler handler = new ConsoleHandler();
41 ColorfulConsoleFormatter formatter = new ColorfulConsoleFormatter();
43 logger.addHandler(handler);
44 handler.setFormatter(formatter);
46 setLevel(logger, handler, formatter);
50 * TODO: optional FileHandler – detailed logs in file in ~/sql-dk/log/…
54 private void setLevel(Logger logger, Handler handler, ColorfulConsoleFormatter formatter) {
55 boolean levelParseError = false;
57 String cliLevel = System.getProperty(LEVEL_PROPERTY);
58 if (cliLevel == null) {
59 level = DEFAULT_LEVEL;
62 level = Level.parse(cliLevel);
63 } catch (IllegalArgumentException e) {
64 level = DEFAULT_LEVEL;
65 levelParseError = true;
69 handler.setLevel(level);
70 logger.setLevel(level);
72 if (levelParseError) {
73 log.log(Level.WARNING, "Invalid logging level „{0}“ specified in „{1}“ → using default level „{2}“", new Object[]{cliLevel, LEVEL_PROPERTY, DEFAULT_LEVEL});
76 formatter.setPrintStacktrace(level.intValue() < Level.INFO.intValue());