001    /*
002     * Copyright 2011 The Kuali Foundation.
003     * 
004     * Licensed under the Educational Community License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     * 
008     * http://www.opensource.org/licenses/ecl2.php
009     * 
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    package org.kuali.kfs.sys.context;
017    
018    import java.net.URL;
019    import java.net.URLClassLoader;
020    
021    import org.apache.log4j.Logger;
022    import org.apache.log4j.PropertyConfigurator;
023    import org.kuali.kfs.sys.KFSConstants;
024    
025    public class Log4jConfigurer {
026        private static final long MILLISECONDS_CONVERSION_MULTIPLIER = 60 * 1000;
027    
028        public static final void configureLogging(boolean doStartupStatsLogging) {
029            String settingsFile = PropertyLoadingFactoryBean.getBaseProperty(KFSConstants.LOG4J_SETTINGS_FILE_KEY);
030            String reloadMinutes = PropertyLoadingFactoryBean.getBaseProperty(KFSConstants.LOG4J_RELOAD_MINUTES_KEY);
031            long reloadMilliseconds = 5 * MILLISECONDS_CONVERSION_MULTIPLIER;
032            try {
033                reloadMilliseconds = Long.parseLong(reloadMinutes) * MILLISECONDS_CONVERSION_MULTIPLIER;
034            }
035            catch (NumberFormatException ignored) {
036                // default to 5 minutes
037            }
038            PropertyConfigurator.configureAndWatch(settingsFile, reloadMilliseconds);
039            printClasspath();
040        }
041    
042        private static void printClasspath() {
043            StringBuffer classpath = new StringBuffer("Classpath is:\n");
044            ClassLoader classloader = Thread.currentThread().getContextClassLoader();
045            URL[] urls = ((URLClassLoader) classloader).getURLs();
046            for (int i = 0; i < urls.length; i++) {
047                classpath.append(urls[i].getFile()).append("; ");
048            }
049            Logger.getLogger(Log4jConfigurer.class).info(classpath.toString());
050        }
051    }