ErrorLogLevelController.java

/**
 * <a href="http://www.openolat.org">
 * OpenOLAT - Online Learning and Training</a><br>
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License"); <br>
 * you may not use this file except in compliance with the License.<br>
 * You may obtain a copy of the License at the
 * <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache homepage</a>
 * <p>
 * Unless required by applicable law or agreed to in writing,<br>
 * software distributed under the License is distributed on an "AS IS" BASIS, <br>
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
 * See the License for the specific language governing permissions and <br>
 * limitations under the License.
 * <p>
 * Initial code contributed and copyrighted by<br>
 * frentix GmbH, http://www.frentix.com
 * <p>
 */
package org.olat.admin.sysinfo;

import java.util.List;

import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.olat.core.gui.UserRequest;
import org.olat.core.gui.components.Component;
import org.olat.core.gui.components.link.Link;
import org.olat.core.gui.components.link.LinkFactory;
import org.olat.core.gui.components.velocity.VelocityContainer;
import org.olat.core.gui.control.Controller;
import org.olat.core.gui.control.Event;
import org.olat.core.gui.control.WindowControl;
import org.olat.core.gui.control.controller.BasicController;
import org.olat.core.gui.control.generic.closablewrapper.CloseableModalController;
import org.olat.core.logging.LogRealTimeViewerController;
import org.olat.core.logging.Tracing;

/**
 * 
 * Initial date: 16.11.2012<br>
 * @author srosse, stephane.rosse@frentix.com, http://www.frentix.com
 *
 */
public class ErrorLogLevelController extends BasicController {

	private static final String ACTION_SETLEVEL = "setlevel";
	private static final String ACTION_VIEWLOG	 = "viewlog";
	private static final String ACTION_VIEWLOG_PACKAGE = "p";

	private Link resetloglevelsButton;
	private final VelocityContainer myLoglevels;

	private CloseableModalController cmc;	
	private LogRealTimeViewerController logViewerCtr;
	
	public ErrorLogLevelController(UserRequest ureq, WindowControl wControl) {
		super(ureq, wControl);
		
		myLoglevels = createVelocityContainer("loglevels");
		resetloglevelsButton = LinkFactory.createButton("resetloglevels", myLoglevels, this);
		putInitialPanel(myLoglevels);
		loadModel();
	}
	
	@Override
	protected void doDispose() {
		//
	}
	
	private void loadModel() {
		List<Logger> loggers = Tracing.getLoggersSortedByName(); // put it in a list in case of a reload (enum can only be used once)
		myLoglevels.contextPut("loggers", loggers);
	}

	@Override
	protected void event(UserRequest ureq, Component source, Event event) {
		if (source == myLoglevels) {
			if (event.getCommand().equals(ACTION_SETLEVEL)) {
				String level = ureq.getHttpReq().getParameter("level");
				String logger = ureq.getHttpReq().getParameter("logger");
				if (logger.equals(org.olat.core.logging.Tracing.class.getName())) {
					getWindowControl().setError("log level of "+org.olat.core.logging.Tracing.class.getName()+" must not be changed!");
					return;
				}
				Level l;
				if (level.equals("debug")) l = Level.DEBUG;
				else if (level.equals("info")) l = Level.INFO;
				else if (level.equals("warn")) l = Level.WARN;
				else l = Level.ERROR;
				
				Tracing.setLevelForLogger(l, logger);
				getWindowControl().setInfo("Set logger " + logger + " to level " + level);
				
			} else if (event.getCommand().equals(ACTION_VIEWLOG)) {
				String toBeViewed = ureq.getParameter(ACTION_VIEWLOG_PACKAGE);
				if (toBeViewed == null) return; // should not happen
				if (logViewerCtr != null)	logViewerCtr.dispose();
				logViewerCtr = new LogRealTimeViewerController(ureq, getWindowControl(), toBeViewed, Level.ALL, true);
				if (cmc != null)	cmc.dispose();
				cmc = new CloseableModalController(getWindowControl(), getTranslator().translate("close"), logViewerCtr.getInitialComponent());
				cmc.addControllerListener(this);
				cmc.activate();
			}
		} else if (source == resetloglevelsButton){
			Tracing.setLevelForAllLoggers(Level.INFO);
			getWindowControl().setInfo("All loglevels set to INFO");
		}
	}

	/**
	 * @see org.olat.core.gui.control.DefaultController#event(org.olat.core.gui.UserRequest, org.olat.core.gui.control.Controller, org.olat.core.gui.control.Event)
	 */
	public void event(UserRequest ureq, Controller source, Event event) {
		if (source == cmc) {
			cmc.dispose();
			cmc = null;
			if (logViewerCtr != null) {
				logViewerCtr.dispose();
				logViewerCtr = null;
			}
		}
	}
}