package dk.thoerup.traininfoservice;

import java.util.logging.Logger;

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

import dk.thoerup.circuitbreaker.AccountingCircuitBreaker;
import dk.thoerup.circuitbreaker.CircuitBreakerManager;
import dk.thoerup.circuitbreaker.LoggingCircuitBreaker;
import dk.thoerup.circuitbreaker.notification.CompositeNotifier;
import dk.thoerup.circuitbreaker.notification.JavaLogNotifier;
import dk.thoerup.circuitbreaker.notification.MailNotifier;


/**
 * Application Lifecycle Listener implementation class JmxListener
 *
 */
@WebListener
public class CircuitBreakerListener implements ServletContextListener {

	Logger logger = Logger.getLogger(CircuitBreakerListener.class.getName());

    public CircuitBreakerListener() {
    }

	/**
     * @see ServletContextListener#contextInitialized(ServletContextEvent)
     */
    public void contextInitialized(ServletContextEvent sce) {
        logger.warning("Context Init");
        
        TraininfoSettings settings = SettingsListener.loadSettings( sce.getServletContext() );

        CircuitBreakerManager mgr = CircuitBreakerManager.getManager();
        
		CompositeNotifier notif = new CompositeNotifier();
		notif.addNotifier( new JavaLogNotifier() );
		 
		//only send mail on prod server
		if (sce.getServletContext().getRealPath("/").startsWith("/home/app/")  ) {    		
			notif.addNotifier( new MailNotifier("traininfo@t-hoerup.dk", "torben@t-hoerup.dk", "192.168.10.5") );
    	}
        
		LoggingCircuitBreaker banedk = new LoggingCircuitBreaker("banedk", settings);
		banedk.setNotifier(notif);
		mgr.addCircuitBreaker( banedk );
		
		
		AccountingCircuitBreaker metro = new AccountingCircuitBreaker("metro", settings);
		metro.setNotifier(notif);
		mgr.addCircuitBreaker( metro );
		
		
		ServletRegistration.Dynamic dynconf = sce.getServletContext().addServlet("circuitbreaker", dk.thoerup.circuitbreaker.web.CircuitBreakerServletBase.class );
		dynconf.addMapping("/CircuitBreakerServlet");
		dynconf.setInitParameter("readonly", "0");
		
		//JMXWrapper.registerAllCircuitBreakers();
    }

	/**
     * @see ServletContextListener#contextDestroyed(ServletContextEvent)
     */
    public void contextDestroyed(ServletContextEvent sce) {
    	logger.warning("Context Destroyed");
    	CircuitBreakerManager.getManager().shutdown(); 

    	//JMXWrapper.unregisterAllCircuitBreakers();
    }
	
}