servi/org.eclipse.statet.rj.servi.webapp/src/main/java/org/eclipse/statet/rj/servi/webapp/EAppEnvDummy.java

/*=============================================================================#
 # Copyright (c) 2009, 2019 Stephan Wahlbrink and others.
 # 
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License 2.0 which is available at
 # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 # which is available at https://www.apache.org/licenses/LICENSE-2.0.
 # 
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 # 
 # Contributors:
 #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
 #=============================================================================*/

package org.eclipse.statet.rj.servi.webapp;

import java.util.concurrent.CopyOnWriteArraySet;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import java.util.logging.Logger;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

import org.eclipse.statet.jcommons.lang.Disposable;
import org.eclipse.statet.jcommons.runtime.AppEnvironment;
import org.eclipse.statet.jcommons.runtime.CommonsRuntime;
import org.eclipse.statet.jcommons.status.Status;


public class EAppEnvDummy implements ServletContextListener, AppEnvironment {
	
	
	private final CopyOnWriteArraySet<Disposable> stopListeners= new CopyOnWriteArraySet<>();
	
	private ServletContext context;
	
	private Logger logger;
	
	
	public EAppEnvDummy() {
	}
	
	
	@Override
	public void contextInitialized(final ServletContextEvent sce) {
		this.context= sce.getServletContext();
		CommonsRuntime.init(this);
		
		this.logger= Logger.getLogger("org.eclipse.statet.rj.servi.pool");
	}
	
	@Override
	public void contextDestroyed(final ServletContextEvent sce) {
		try {
			for (final Disposable listener : this.stopListeners) {
				listener.dispose();
			}
		}
		finally {
			this.stopListeners.clear();
			this.context= null;
		}
	}
	
	
	@Override
	public String getBundleId() {
		return "org.eclipse.statet.rj.services.eruntime";
	}
	
	
	@Override
	public void log(final Status status) {
		final Level level;
		switch (status.getSeverity()) {
		case Status.INFO:
			level= Level.INFO;
			break;
		case Status.WARNING:
			level= Level.WARNING;
			break;
		case Status.ERROR:
			level= Level.SEVERE;
			break;
		default:
			level= Level.FINE;
		}
		final LogRecord record= new LogRecord(level, status.getMessage());
		if (status.getException() != null) {
			record.setThrown(status.getException());
		}
		
		// set correct caller
		try {
			final StackTraceElement[] stackTrace= new Exception().getStackTrace();
			for (int i= 1; i < stackTrace.length; i++) {
				if (!stackTrace[i].getMethodName().startsWith("log")) {
					record.setSourceClassName(stackTrace[i].getClassName());
					record.setSourceMethodName(stackTrace[i].getMethodName());
					break;
				}
			}
		}
		catch (final Exception ignore) {}
		
		this.logger.log(record);
	}
	
	
	@Override
	public void addStoppingListener(final Disposable listener) {
		this.stopListeners.add(listener);
	}
	
	@Override
	public void removeStoppingListener(final Disposable listener) {
		this.stopListeners.remove(listener);
	}
	
	
}