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/**
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* SQL-DK
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* Copyright © 2013 František Kučera (frantovo.cz)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package info.globalcode.sql.dk.logging;
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import info.globalcode.sql.dk.Constants;
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import java.util.logging.ConsoleHandler;
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import java.util.logging.Handler;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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/**
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* Configures logging subsystem.
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* Usage: java -Djava.util.logging.config.class=info.globalcode.sql.dk.logging.LoggerInitializer …
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*
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* @author Ing. František Kučera (frantovo.cz)
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*/
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public class LoggerInitializer {
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private static final Logger log = Logger.getLogger(LoggerInitializer.class.getName());
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public static final String LEVEL_PROPERTY = LoggerInitializer.class.getName() + ".level";
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private static final Level DEFAULT_LEVEL = Level.INFO;
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public LoggerInitializer() {
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Logger logger = Logger.getLogger(Constants.JAVA_PACKAGE);
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ConsoleHandler handler = new ConsoleHandler();
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ColorfulConsoleFormatter formatter = new ColorfulConsoleFormatter();
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logger.addHandler(handler);
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handler.setFormatter(formatter);
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setLevel(logger, handler, formatter);
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/**
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* TODO: optional FileHandler – detailed logs in file in ~/sql-dk/log/…
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*/
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}
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private void setLevel(Logger logger, Handler handler, ColorfulConsoleFormatter formatter) {
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boolean levelParseError = false;
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Level level;
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String cliLevel = System.getProperty(LEVEL_PROPERTY);
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if (cliLevel == null) {
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level = DEFAULT_LEVEL;
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} else {
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try {
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level = Level.parse(cliLevel);
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} catch (IllegalArgumentException e) {
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level = DEFAULT_LEVEL;
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levelParseError = true;
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}
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}
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handler.setLevel(level);
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logger.setLevel(level);
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if (levelParseError) {
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log.log(Level.WARNING, "Invalid logging level „{0}“ specified in „{1}“ → using default level „{2}“", new Object[]{cliLevel, LEVEL_PROPERTY, DEFAULT_LEVEL});
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}
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formatter.setPrintStacktrace(level.intValue() < Level.INFO.intValue());
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}
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}
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