com.medlog.webservice.lifecycle.NewServletListener.java Source code

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Here is the source code for com.medlog.webservice.lifecycle.NewServletListener.java

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package com.medlog.webservice.lifecycle;

import com.medlog.webservice.util.*;
import java.util.logging.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.commons.lang3.builder.*;

/**
 * Web application lifecycle listener.
 *
 * @author
 */
public class NewServletListener
        implements ServletContextListener, ServletContextAttributeListener, HttpSessionListener {

    public static int users = 0;

    @Override
    public void attributeAdded(ServletContextAttributeEvent _event) {
        System.out.println("$$$$$$$$ com.medlog.webservice.lifecycle.NewServletListener.attributeAdded()");
        logit(_event, "added");

    }

    @Override
    public void attributeRemoved(ServletContextAttributeEvent _event) {

        System.out.println("$$$$$$$$ com.medlog.webservice.lifecycle.NewServletListener.attributeRemoved()");
        logit(_event, "removed");
    }

    @Override
    public void attributeReplaced(ServletContextAttributeEvent _arg0) {
        System.out.println("$$$$$$$$ com.medlog.webservice.lifecycle.NewServletListener.attributeReplaced()");
        logit(_arg0, "replaced");
    }

    private void logit(ServletContextAttributeEvent e, String event) {
        try {
            System.out.println(StrUtl.toS(e.getSource().getClass().getName(), "[source]"));//, e.getName(), StrUtl.toS( e.getValue().toString(), "[val]" ), event );
            System.out.print(event);
            System.out.print(" -:- ");
            System.out.print(StrUtl.toS(e.getName(), "[name]"));
            System.out.print(" = ");
            System.out.println(StrUtl.toS(e.getValue().toString(), "[val]"));

        } catch (Exception ee) {
            ee.printStackTrace();
        }

    }

    @Override
    public void contextDestroyed(ServletContextEvent _sce) {
        System.out.println("$$$$$$$$ com.medlog.webservice.lifecycle.NewServletListener.contextDestroyed()");

    }

    @Override
    public void contextInitialized(ServletContextEvent _sce) {
        LOG.log(Level.INFO, String.format("$$$$$$$$ com.medlog.webservice.lifecycle.NewServletListener# %s ",
                _sce.getServletContext().getContextPath()));
        System.out.println("\ncom.medlog.webservice.lifecycle.NewServletListener.contextInitialized() ---> "
                + _sce.getServletContext().getServerInfo());
        _sce.getServletContext().setAttribute("activeLogins", 1);

    }

    @Override
    public void sessionCreated(HttpSessionEvent _se) {
        Integer activeUsers = (Integer) _se.getSession().getServletContext().getAttribute("activeLogins");
        if (activeUsers == null) {
            LOG.warning("Active Users NULL!");
            activeUsers = 1;
        } else {
            activeUsers++;
        }

        _se.getSession().getServletContext().setAttribute("activeLogins", activeUsers);

        LOG.warning("\n$$$$$$$$ com.medlog.webservice.lifecycle.NewServletListener.sesionCreated()");
        System.out.println(
                "\n$$$$$$$$ com.medlog.webservice.lifecycle.NewServletListener.sessionCreated() Users online: "
                        + activeUsers);

    }

    @Override
    public void sessionDestroyed(HttpSessionEvent _se) {
        Integer activeUsers = (Integer) _se.getSession().getServletContext().getAttribute("activeLogins");
        if (activeUsers == null) {
            LOG.warning("Active Users NULL!");
            activeUsers = 0;
        } else {
            activeUsers--;
        }
        _se.getSession().getServletContext().setAttribute("activeLogins", activeUsers);
        LOG.info("$$$$$$$$ com.medlog.webservice.lifecycle.NewServletListener.sesionDestroyed()");
        System.out.println(
                "$$$$$$$$ com.medlog.webservice.lifecycle.NewServletListener.sessionDestoyed() Users online: "
                        + activeUsers);

    }

    private static final Logger LOG = Logger.getLogger(NewServletListener.class.getName());
}