LearnPAd/learnpad

/**
 * LearnPAd - Verification Component
 * 
 *  Copyright (C) 2015 Unicam
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *   
 * @author Damiano Falcioni - Unicam <damiano.falcioni@gmail.com>
 */

package eu.learnpad.verification.utils;

import java.io.File;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

public class Utils {
    public static String getUTCTime(){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
        sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
        return sdf.format(new Date());
    }
    
    public enum LogType{
        INFO, ERROR, DEBUG;
    }
    public static void log(Error e){
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        log(sw.toString(), LogType.ERROR);
    }
    public static void log(Exception e){
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        log(sw.toString(), LogType.ERROR);
    }
    public static void log(String message, LogType logType){
        try{
            String folderPath = Utils.class.getProtectionDomain().getCodeSource().getLocation().toURI().getPath();
            if(new File(folderPath).isDirectory())
                folderPath = folderPath.substring(0, folderPath.length()-1);
            String logFile = folderPath.substring(0, folderPath.lastIndexOf("/")+1) + "verification.log";
            //System.err.println("INFO: updated log file " + logFile);
            String callerClassName = new Exception().getStackTrace()[1].getClassName();
            IOUtils.writeFile(("\n"+logType.toString()+" "+getUTCTime()+" "+callerClassName+" \n"+message).getBytes(), logFile, true);
        }catch(Exception ex){ex.printStackTrace();}
    }
}