/**
* OpenKM, Open Document Management System (http://www.openkm.com)
* Copyright (c) 2006-2011 Paco Avila & Josep Llort
*
* No bytes were intentionally harmed during the development of this application.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package com.openkm.util;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.text.MessageFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.apache.commons.io.IOUtils;
import com.openkm.core.Config;
public class FileLogger {
private static SimpleDateFormat logEntryDate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,SSS");
private static final String LEVEL_INFO = "INFO ";
private static final String LEVEL_WARN = "WARN ";
private static final String LEVEL_ERROR = "ERROR";
private Writer cLogger = null;
/**
* Create a new file logger.
*
* @param baseName The base name of the log file
* @throws IOException If there is an exception when creating.
*/
public FileLogger(String baseName) throws IOException {
cLogger = new FileWriter(getLogFile(baseName), true);
}
/**
* Write message to log file.
*
* @param message Message to write.
* @throws IOException If there is an exception when writing.
*/
public void info(String message, Object... params) throws IOException {
cLogger.write(getLogEntry(LEVEL_INFO, message, params));
cLogger.flush();
}
/**
* Write message to log file.
*
* @param message Message to write.
* @throws IOException If there is an exception when writing.
*/
public void warn(String message, Object... params) throws IOException {
cLogger.write(getLogEntry(LEVEL_WARN, message, params));
cLogger.flush();
}
/**
* Write message to log file.
*
* @param message Message to write.
* @throws IOException If there is an exception when writing.
*/
public void error(String message, Object... params) throws IOException {
cLogger.write(getLogEntry(LEVEL_ERROR, message, params));
cLogger.flush();
}
/**
* Close log file.
*/
public void close() {
IOUtils.closeQuietly(cLogger);
}
/**
* Static file logger.
*
* @throws IOException If there is an exception when writing.
*/
public static void info(String baseName, String message, Object... params) throws IOException {
logWrite(baseName, LEVEL_INFO, message, params);
}
/**
* Static file logger.
*
* @throws IOException If there is an exception when writing.
*/
public static void warn(String baseName, String message, Object... params) throws IOException {
logWrite(baseName, LEVEL_WARN, message, params);
}
/**
* Static file logger.
*
* @throws IOException If there is an exception when writing.
*/
public static void error(String baseName, String message, Object... params) throws IOException {
logWrite(baseName, LEVEL_ERROR, message, params);
}
/**
* Write to log file
*
* @throws IOException If there is an exception when writing.
*/
private static void logWrite(String baseName, String level, String message, Object... params) throws IOException {
Writer sLogger = new FileWriter(getLogFile(baseName), true);
sLogger.write(getLogEntry(level, message, params));
sLogger.flush();
sLogger.close();
}
/**
* Create a log file name from a base name.
*
* @param baseName The base name to construct the file name.
* @return The result file name.
*/
private static String getLogFile(String baseName) {
String fileDate = new SimpleDateFormat("yyyyMMdd").format(new Date());
return Config.HOME_DIR + File.separator + baseName + "_" + fileDate + ".log";
}
/**
* Build a long entry.
*
* @param message Message to log.
* @param params Optional menssage params.
* @return An String with the long entry.
*/
private static String getLogEntry(String level, String message, Object... params) {
StringBuilder sb = new StringBuilder();
sb.append(logEntryDate.format(new Date()));
sb.append(" ");
sb.append(level);
sb.append(" ");
sb.append(MessageFormat.format(message, params));
sb.append("\n");
return sb.toString();
}
}