Java Log Message LOG(Object... msgs)

Description

Low maintenance logger

License

Open Source License

Parameter

Parameter	Description
msgs	The objects to format and log

Declaration

private static void LOG(Object... msgs) 

Method Source Code

//package com.java2s;
/**//w w w .j a v  a 2  s.  c o m
 * Helios, OpenSource Monitoring
 * Brought to you by the Helios Development Group
 *
 * Copyright 2012, Helios Development Group and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 
 *
 */

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;

public class Main {
    /**
     * Low maintenance logger
     * @param msgs The objects to format and log 
     */
    private static void LOG(Object... msgs) {
        System.out.println(format(msgs));
    }

    /**
     * Formats the passed objects into a loggable string. 
     * If the last object is a {@link Throwable}, it will be formatted into a stack trace.
     * @param msgs The objects to log
     * @return the loggable string
     */
    public static String format(Object... msgs) {
        if (msgs == null || msgs.length < 1)
            return "";
        StringBuilder b = new StringBuilder();
        int c = msgs.length - 1;
        for (int i = 0; i <= c; i++) {
            if (i == c && msgs[i] instanceof Throwable) {
                b.append(formatStackTrace((Throwable) msgs[i]));
            } else {
                b.append(msgs[i]);
            }
        }
        return b.toString();
    }

    /**
     * Formats a throwable's stack trace
     * @param t The throwable to format
     * @return the formatted stack trace
     */
    public static String formatStackTrace(Throwable t) {
        if (t == null)
            return "";
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        t.printStackTrace(new PrintStream(baos, true));
        try {
            baos.flush();
        } catch (IOException e) { /* No Op */
        }
        return baos.toString();
    }
}

Related

1. log(final PrintStream logger, final String message)
2. log(final String file, final String msg)
3. log(final String message, final String file)
4. log(int physicalId, String message)
5. log(Object o, String msg)
6. log(PrintWriter logger, String text)
7. Log(String filename, String message)
8. log(String fmt, Object... args)
9. log(String line)