package dk.thoerup.curcuitbreaker.web;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.*;

/**
 * This is a web interface for viewing and controlling the CircuitBreakers currently registered in CircuitBreakerManager
 * <p> 
 * To use this servlet in you .war module just create a simple servlet where doGet just delegates to this class' doGet method
 * 
 * Example:
 * <pre>
 * public class CircuitBreakerServlet extends HttpServlet {
 *   private static final long serialVersionUID = 1L;
 *   
 *   CircuitBreakerServletHelper helper = new CircuitBreakerServletHelper();
 *   protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
 *     helper.doGet(req, resp);
 *   }
 * }
 * </pre>
 */

public class CircuitBreakerServletHelper{
	
	public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		ListCircuitBreakers cmd = new ListCircuitBreakers();
		
		String response = cmd.doCommand(req);
		
		resp.setDateHeader("Expires", 0);
		resp.setHeader("Pragma", "no-cache");
		resp.setHeader("Cache-Control", "no-cache");
		
		resp.getWriter().print(response);
	}

}