LogUtil.java

import org.apache.log4j.Logger;

/**
 * Utilitaires pour centraliser le logging
 * @author maugerni
 */

public class LogUtil {

	public static final int PAD_NUMBER = 60; 

	public static void LogTraceBegin(Logger logger, String... messages) {
		if (logger.isTraceEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.trace(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+"BEGIN"+outputMessage);
		}
	}

	public static void LogTraceEnd(Logger logger, String... messages) {
		if (logger.isTraceEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.trace(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+"END"+outputMessage);
		}
	}

	public static void LogTrace(Logger logger, String... messages) {
		if (logger.isTraceEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.trace(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+outputMessage);
		}
	}

	public static void LogDebugBegin(Logger logger, String... messages) {
		if (logger.isDebugEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.debug(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+"BEGIN"+outputMessage);
		}
	}

	public static void LogDebugEnd(Logger logger, String... messages) {
		if (logger.isDebugEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.debug(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+"END"+outputMessage);
		}
	}

	public static void LogDebug(Logger logger, String... messages) {
		if (logger.isDebugEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.debug(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+outputMessage);
		}
	}

	public static void LogInfoBegin(Logger logger, String... messages) {
		if (logger.isInfoEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.info(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+"BEGIN"+outputMessage);
		}
	}

	public static void LogInfoEnd(Logger logger, String... messages) {
		if (logger.isInfoEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.info(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+"END"+outputMessage);
		}
	}

	public static void LogInfo(Logger logger, String... messages) {
		if (logger.isInfoEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.info(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+outputMessage);
		}
	}

	public static void LogWarnBegin(Logger logger, String... messages) {
		if (logger.isWarnEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.warn(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+"BEGIN"+outputMessage);
		}
	}

	public static void LogWarnEnd(Logger logger, String... messages) {
		if (logger.isWarnEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.warn(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+"END"+outputMessage);
		}
	}

	public static void LogWarn(Logger logger, String... messages) {
		if (logger.isWarnEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.warn(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+outputMessage);
		}
	}

	public static void LogErrorBegin(Logger logger, String... messages) {
		if (logger.isErrorEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.error(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+"BEGIN"+outputMessage);
		}
	}

	public static void LogErrorEnd(Logger logger, String... messages) {
		if (logger.isErrorEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.error(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+"END"+outputMessage);
		}
	}

	public static void LogError(Logger logger, String... messages) {
		if (logger.isErrorEnabled()) {
			String outputMessage = getOutputMessage(messages);
			logger.error(padRight(getClassName()+"#"+getMethodName(),PAD_NUMBER)+outputMessage);
		}
	}

	public static String getOutputMessage(String[] messages) {
		String outputMessage = "";
		if (messages != null && messages.length > 0) {
			outputMessage += " | ";
			for(int i = 0; i < messages.length; i++) {
				outputMessage += messages[i];
				if(i < (messages.length - 1))
					outputMessage += " | ";
			}
		}
		return outputMessage;
	}

	public static String getMethodName() {
		final StackTraceElement[] ste = Thread.currentThread().getStackTrace();
		return ste[3].getMethodName()+"["+ste[3].getLineNumber()+"]";
	}

	public static String getClassName() {
		final StackTraceElement[] ste = Thread.currentThread().getStackTrace();
		String fullClassName = ste[3].getClassName();
		String[] splittedClassName = fullClassName.split("\\.");
		if (splittedClassName != null && splittedClassName.length > 0) {
			return splittedClassName[splittedClassName.length - 1];
		}
		return ste[3].getClassName();
	}

	public static String padRight(String s, int n) {
		return String.format("%1$-" + n + "s", s).replaceAll(" ", ".");
	}

}