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• 0.8.1
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• AdminServlet.java

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org.coweb.servlet.AdminServlet Maven / Gradle / Ivy

/**
 * Copyright (c) The Dojo Foundation 2011. All Rights Reserved.
 * Copyright (c) IBM Corporation 2008, 2011. All Rights Reserved.
 */
package org.coweb.servlet;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import java.util.Map;
import java.util.HashMap;
import java.util.ArrayList;
import java.util.Collection;

import java.util.logging.ConsoleHandler;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.servlet.ServletContext;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.cometd.bayeux.server.BayeuxServer;
import org.cometd.server.ext.AcknowledgedMessagesExtension;
import org.coweb.SessionHandler;
import org.coweb.SessionManager;
import org.coweb.CowebSecurityPolicy;
import org.coweb.CowebExtension;

import org.eclipse.jetty.util.ajax.JSON;

/**
 * The servlet that handles session prepare requests. This servlet will will
 * reply with the session info for the client. If a session does not already
 * exist it will be created. The servlet must be initialized after the cometd
 * servlet.
 * 
 */
public class AdminServlet extends HttpServlet {

	private static final long serialVersionUID = 1L;
	private static final Logger log = Logger.getLogger(AdminServlet.class
			.getName());

	public static final String SESSMGR_ATTRIBUTE = "session.attribute";

	private SessionManager sessionManager = null;
	private CowebSecurityPolicy securityPolicy = null;

	/**
	 * Loads the coweb config file and creates the security manager and session
	 * manager. The session manager is registered to listen for all bayeux
	 * traffic.
	 */
	@Override
	public void init() throws ServletException {
		super.init();

		ServletContext servletContext = this.getServletContext();

		// get the bayeux server and register the bayeux ack extension.
		BayeuxServer bayeux = (BayeuxServer) servletContext
				.getAttribute(BayeuxServer.ATTRIBUTE);
		bayeux.addExtension(new AcknowledgedMessagesExtension());

		// parse the coweb configuration file for this application.
		ServletConfig config = this.getServletConfig();
		Map cowebConfig = null;
		try {
			cowebConfig = this.getCowebConfigOptions(config);
		} catch (Exception e1) {
			e1.printStackTrace();
			cowebConfig = new HashMap();
		}
		
		int logLevel = 0;

		if (cowebConfig.get("logLevel") != null) {
			Long level = (Long)cowebConfig.get("logLevel");
			logLevel = level.intValue();
		}
		
		Logger parentLogger = Logger.getLogger("org.coweb");
		parentLogger.setUseParentHandlers(false);
		ConsoleHandler consoleHandler = new ConsoleHandler();
		parentLogger.addHandler(consoleHandler);
		
		switch (logLevel) {
			case 0:
				parentLogger.setLevel(Level.WARNING);
				consoleHandler.setLevel(Level.WARNING);
				break;
			case 1:	
				parentLogger.setLevel(Level.INFO);
				consoleHandler.setLevel(Level.INFO);
				break;
			case 2:	
				parentLogger.setLevel(Level.FINE);
				consoleHandler.setLevel(Level.FINE);
				break;
		}
		
		log.info("servlet init");
		log.info("cowebConfig = " + cowebConfig.toString());

		// setup any debug options for capturing incoming and outgoing
		// bayeux traffic.
		String captureIncoming = (String) cowebConfig.get("captureIncoming");
		String captureOutgoing = (String) cowebConfig.get("captureOutgoing");
		if (captureIncoming != null || captureOutgoing != null) {
			try {
				CowebExtension cowebExtension = new CowebExtension(
						captureIncoming, captureOutgoing);
				bayeux.addExtension(cowebExtension);
			} catch (Exception e) {
				log.info(e.getMessage());
			}
		}

		// Create the security policy. Default to CowebSecurityPolicy.
		// Get the SecurityPolicy for this application
		String securityClass = (String) cowebConfig.get("securityClass");
		if (securityClass == null)
			securityPolicy = new CowebSecurityPolicy();
		else {
			try {
				Class clazz = Class.forName(
						securityClass).asSubclass(CowebSecurityPolicy.class);
				securityPolicy = (CowebSecurityPolicy) clazz.newInstance();
			} catch (Exception e) {
				securityPolicy = new CowebSecurityPolicy();
			}
		}

		// set the coweb security policty
		bayeux.setSecurityPolicy(securityPolicy);

		// create the SessionManager instance. The SessionManager also listens
		// to all bayeux
		// traffic.
		this.sessionManager = SessionManager.newInstance(cowebConfig, bayeux);
	}

	@Override
	public void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {

		log.fine("AdminServlet::gotGet ***********");
		log.fine(req.getRequestURL().toString());
		log.info("received admin rest call");
		if (req.getRequestURL().indexOf("disconnect") != -1) {
			log.info("received disconnect rest call");
			this._handleDisconnect(req, resp);
			return;
		}

		if (req.getRequestURL().indexOf("sessions") != -1) {
			log.info("received sessions rest call");
			ArrayList