circuitbreaker/web/CircuitBreakerServletBase.java

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 that extends this class (instead of HttpServlet)
 * The new custom servlet doesn't need to implement any of the standard servlet methods - its all done in this implementation.
 *  
 * <p>
 * Example:
 * <pre>
 * public class CircuitBreakerServlet extends CircuitBreakerServletBase {
 *   private static final long serialVersionUID = 1L;
 * }
 * </pre>
 */

public class CircuitBreakerServletBase  extends javax.servlet.http.HttpServlet  {
        
        private static final long serialVersionUID = 1L;
        
        private Command getCommand(String command) throws ServletException {
                if (command == null || command.equals("list"))
                        return new ListCircuitBreakers();
                
                if (command.equals("view"))
                        return new ViewCircuitBreaker();
                
                throw new ServletException("No such action:" + command);
        }

        public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
                Command cmd = getCommand( req.getParameter("command"));
                
                String response = cmd.execute(req,resp);
                
                resp.setDateHeader("Expires", 0);
                resp.setHeader("Pragma", "no-cache");
                resp.setHeader("Cache-Control", "no-cache");
                
                resp.getWriter().print(response);
        }

        @Override
        protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
                doGet(req, resp);
        }
        
        
        
        

}
1	torben	411	package dk.thoerup.curcuitbreaker.web;
2
3			import java.io.IOException;
4
5			import javax.servlet.ServletException;
6			import javax.servlet.http.*;
7
8			/**
9			* This is a web interface for viewing and controlling the CircuitBreakers currently registered in CircuitBreakerManager
10			* <p>
11	torben	414	* To use this servlet in you .war module just create a simple servlet that extends this class (instead of HttpServlet)
12			* The new custom servlet doesn't need to implement any of the standard servlet methods - its all done in this implementation.
13			*
14			* <p>
15	torben	411	* Example:
16			* <pre>
17	torben	414	* public class CircuitBreakerServlet extends CircuitBreakerServletBase {
18	torben	411	* private static final long serialVersionUID = 1L;
19			* }
20			* </pre>
21			*/
22
23	torben	416	public class CircuitBreakerServletBase extends javax.servlet.http.HttpServlet {
24	torben	411
25	torben	414	private static final long serialVersionUID = 1L;
26	torben	416
27			private Command getCommand(String command) throws ServletException {
28			if (command == null \|\| command.equals("list"))
29			return new ListCircuitBreakers();
30
31			if (command.equals("view"))
32			return new ViewCircuitBreaker();
33
34			throw new ServletException("No such action:" + command);
35			}
36	torben	414
37	torben	411	public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
38	torben	416	Command cmd = getCommand( req.getParameter("command"));
39	torben	411
40	torben	416	String response = cmd.execute(req,resp);
41	torben	411
42			resp.setDateHeader("Expires", 0);
43			resp.setHeader("Pragma", "no-cache");
44			resp.setHeader("Cache-Control", "no-cache");
45
46			resp.getWriter().print(response);
47			}
48
49	torben	416	@Override
50			protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
51			doGet(req, resp);
52			}
53
54
55
56
57
58	torben	411	}