package org.javaee7.concurrency.managedthreadfactory;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.enterprise.concurrent.ManagedThreadFactory;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author Arun Gupta
*/
@WebServlet(urlPatterns = {"/TestJNDIServlet"})
public class TestJNDIServlet extends HttpServlet {
/**
* Processes requests for both HTTP
* <code>GET</code> and
* <code>POST</code> methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet TestJNDIServlet</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Getting ManagedThreadFactory using JNDI lookup</h1>");
try {
InitialContext ctx = new InitialContext();
ManagedThreadFactory factory = (ManagedThreadFactory) ctx.lookup("java:comp/DefaultManagedThreadFactory");
// ManagedExecutorService executor = (ManagedExecutorService) ctx.lookup("concurrent/myExecutor");
out.println("Getting ManageableThread<br>");
Thread thread = factory.newThread(new MyTask(2));
out.println("Starting thread<br>");
thread.start();
out.println("Thread started<br><br>");
} catch (NamingException ex) {
Logger.getLogger(TestResourceServlet.class.getName()).log(Level.SEVERE, null, ex);
}
out.println("all tasks submitted<br/><br/>");
out.println("Check server.log for output from the task.");
out.println("</body>");
out.println("</html>");
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP
* <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP
* <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}