package compbio.nosql.listeners;

import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;

import compbio.nosql.cassandra.CassandraCreate;

/**
 * Application Lifecycle Listener implementation class ContextListener
 *
 */
@WebListener
public class ContextListener implements ServletContextListener {
	private ScheduledExecutorService scheduler;
	CassandraCreate cc = new CassandraCreate();
	/**
     * @see ServletContextListener#contextInitialized(ServletContextEvent)
     */
    public void contextInitialized(ServletContextEvent arg0) {
    	System.out.println("Session start ...........................................");    	
    	cc.Connection();
    	
    	
    	scheduler = Executors.newSingleThreadScheduledExecutor();
    	scheduler.scheduleAtFixedRate(new Runnable() {
            @Override
            public void run() { cc.Parsing();}}
    			, 0, 30, TimeUnit.SECONDS);
    }

	/**
     * @see ServletContextListener#contextDestroyed(ServletContextEvent)
     */
    public void contextDestroyed(ServletContextEvent arg0) {
    	cc.Closing();
    	System.out.println("Shut down");
    	scheduler.shutdownNow();
    }
    
    
    
    
}