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/**
* Copyright (C) 2004-2008 Jive Software. All rights reserved.
*
* This software is published under the terms of the GNU Public License (GPL),
* a copy of which is included in this distribution, or a commercial license
* agreement with Jive.
*/
package org.xmpp.component;
/**
* A simple logging service for components. Four log levels are provided:<ul>
*
* <li>Error -- an error occured in the component.
* <li>Warn -- a condition occured that an administrator should be warned about.
* <li>Info -- used to send information messages, such as a version or license notice.
* <li>Debug -- used to send debugging information. Most Log implementations will
* disable debug output by default.
* </ul>
*
* Log implementations will attempt use the native logging service of the component host
* server. However, this may not be possible in some cases -- for example, when using an
* external component that is not currently connected to the server.
*
* @author Matt Tucker
*/
public interface Log {
/**
* Logs an error.
*
* @param message the error message.
*/
public void error(String message);
/**
* Logs an error.
*
* @param message the error message.
* @param throwable the Throwable that caused the error.
*/
public void error(String message, Throwable throwable);
/**
* Logs an error.
*
* @param throwable the Throwable that caused the error.
*/
public void error(Throwable throwable);
/**
* Logs a warning.
*
* @param message the warning message.
*/
public void warn(String message);
/**
* Logs a warning.
*
* @param message the warning message.
* @param throwable the Throwable that caused the error.
*/
public void warn(String message, Throwable throwable);
/**
* Logs a warning.
*
* @param throwable the Throwable that caused the error.
*/
public void warn(Throwable throwable);
/**
* Logs an info message.
*
* @param message the info message.
*/
public void info(String message);
/**
* Logs an info message.
*
* @param message the info message.
* @param throwable the Throwable that caused the info message.
*/
public void info(String message, Throwable throwable);
/**
* Logs an info message.
*
* @param throwable the Throwable that caused the info message.
*/
public void info(Throwable throwable);
/**
* Logs a debug message.
*
* @param message the debug message.
*/
public void debug(String message);
/**
* Logs a debug message.
*
* @param message the debug message.
* @param throwable the Throwable that caused the debug message.
*/
public void debug(String message, Throwable throwable);
/**
* Logs a debug message.
*
* @param throwable the Throwable the caused the debug message.
*/
public void debug(Throwable throwable);
}