src/dolda/jsvc/j2ee/Servlet.java

   1 package dolda.jsvc.j2ee;
   2
   3 import dolda.jsvc.*;
   4 import java.lang.reflect.*;
   5 import java.util.*;
   6 import java.io.*;
   7 import javax.servlet.http.*;
   8 import javax.servlet.*;
   9
  10 public class Servlet extends HttpServlet {
  11     private Responder root;
  12     private ThreadGroup workers;
  13     private long reqs = 0;
  14
  15     public void init() throws ServletException {
  16         workers = new ThreadGroup("JSvc worker threads") {
  17                 public void uncaughtException(Thread t, Throwable e) {
  18                     log("Worker thread terminated with an uncaught exception", e);
  19                 }
  20             };
  21         Properties sprop = new Properties();
  22         try {
  23             InputStream pi = Servlet.class.getClassLoader().getResourceAsStream("jsvc.properties");
  24             try {
  25                 sprop.load(pi);
  26             } finally {
  27                 pi.close();
  28             }
  29         } catch(IOException e) {
  30             throw(new Error(e));
  31         }
  32         String clnm = (String)sprop.get("jsvc.bootstrap");
  33         if(clnm == null)
  34             throw(new ServletException("No JSvc bootstrapper specified"));
  35         try {
  36             Class<?> rc = Class.forName(clnm);
  37             Method cm = rc.getMethod("responder");
  38             Object resp = cm.invoke(null);
  39             if(!(resp instanceof Responder))
  40                 throw(new ServletException("JSvc bootstrapper did not return a responder"));
  41             root = (Responder)resp;
  42         } catch(ClassNotFoundException e) {
  43             throw(new ServletException("Invalid JSvc bootstrapper specified", e));
  44         } catch(NoSuchMethodException e) {
  45             throw(new ServletException("Invalid JSvc bootstrapper specified", e));
  46         } catch(IllegalAccessException e) {
  47             throw(new ServletException("Invalid JSvc bootstrapper specified", e));
  48         } catch(InvocationTargetException e) {
  49             throw(new ServletException("JSvc bootstrapper failed", e));
  50         }
  51     }
  52
  53     public void destroy() {
  54         workers.interrupt();
  55         if(root instanceof ContextResponder)
  56             ((ContextResponder)root).destroy();
  57     }
  58
  59     public void service(HttpServletRequest req, HttpServletResponse resp) {
  60         try {
  61             req.setCharacterEncoding("UTF-8");
  62             resp.setCharacterEncoding("UTF-8");
  63         } catch(UnsupportedEncodingException e) {
  64             throw(new Error(e));
  65         }
  66         long mynum = reqs++;
  67         Request rr = new J2eeRequest(getServletConfig(), req, resp);
  68         RequestThread w = new RequestThread(root, rr, workers, "Worker thread " + mynum);
  69         w.start();
  70         try {
  71             w.join();
  72         } catch(InterruptedException e) {
  73             w.interrupt();
  74             return;
  75         }
  76     }
  77 }