org.eclipse.viatra2.core2/src/org/eclipse/viatra2/framework/MultiLogger.java

/*******************************************************************************
 * Copyright (c) 2004-2008 Andras Schmidt, Andras Balogh, Istvan Rath and Daniel Varro
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Andras Schmidt, Andras Balogh, Istvan Rath - initial API and implementation
 *******************************************************************************/

package org.eclipse.viatra2.framework;

import java.util.ArrayList;

import org.eclipse.viatra2.framework.properties.VPMProperties;
import org.eclipse.viatra2.logger.Logger;

/**
 * A VPM logger implementation, that accumulates many loggers. Loggers can be
 * plugged into this logger and all output will be forwarded to all plugged
 * loggers. This module is used by the VPM modeling framework to make it
 * available to use more logger plugins the same time.
 * 
 * @author Andras Schmidt
 */

public class MultiLogger implements Logger {

	ArrayList<Logger> listeners = new ArrayList<Logger>();

	public void setLevel(int level) {
		for (Logger l : listeners) {
			l.setLevel(level);
		}
	}

	public void debug(String s) {
		for (Logger l : listeners) {
			l.debug(s);
		}
	}

	public void warning(String s) {
		for (Logger l : listeners) {
			l.warning(s);
		}
	}

	public void error(String s) {
		for (Logger l : listeners) {
			l.error(s);
		}
	}

	public void fatal(String s) {
		for (Logger l : listeners) {
			l.fatal(s);
		}
	}

	public void info(String s) {
		for (Logger l : listeners) {
			l.info(s);
		}
	}

	public void init(VPMProperties p) {

	}

	/**
	 * Add a listening logger plugin.
	 * 
	 * @param listener
	 *            this plugin will get all log events from now
	 */
	public void addListener(Logger l) {
		listeners.add(l);
	}

	/**
	 * Remove a listening logger plugin.
	 * 
	 * @param listener
	 *            this plugin will not get all log events from now
	 */
	void removeListener(Logger l) {
		listeners.remove(l);
	}

	/**
	 * Get all listeners of this logger pipeline
	 * 
	 * @returns all listeners
	 */
	ArrayList<Logger> getListeners() {
		return listeners;
	}

	public void message(int level, String msg, Throwable cause) {
		for (Logger l : listeners) {
			l.message(level, msg, cause);
		}
	}

	public void message(int level, String msg) {
		for (Logger l : listeners) {
			l.message(level, msg);
		}
	}

	public void printStackTrace(Throwable t) {
		for (Logger l : listeners)
		{
			l.printStackTrace(t);
		}
		
	}
}