source: proiecte/HadoopJUnit/hadoop-0.20.1/build/src/org/apache/hadoop/mapred/machines_jsp.java @ 120

package org.apache.hadoop.mapred;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import java.text.DecimalFormat;
import org.apache.hadoop.mapred.*;
import org.apache.hadoop.util.*;

public final class machines_jsp extends org.apache.jasper.runtime.HttpJspBase
    implements org.apache.jasper.runtime.JspSourceDependent {


  public void generateTaskTrackerTable(JspWriter out,
                                       String type,
                                       JobTracker tracker) throws IOException {
    Collection c;
    if (("blacklisted").equals(type)) {
      c = tracker.blacklistedTaskTrackers();
    } else if (("active").equals(type)) {
      c = tracker.activeTaskTrackers();
    } else {
      c = tracker.taskTrackers();
    }
    if (c.size() == 0) {
      out.print("There are currently no known " + type + " Task Trackers.");
    } else {
      out.print("<center>\n");
      out.print("<table border=\"2\" cellpadding=\"5\" cellspacing=\"2\">\n");
      out.print("<tr><td align=\"center\" colspan=\"6\"><b>Task Trackers</b></td></tr>\n");
      out.print("<tr><td><b>Name</b></td><td><b>Host</b></td>" +
                "<td><b># running tasks</b></td>" +
                "<td><b>Max Map Tasks</b></td>" +
                "<td><b>Max Reduce Tasks</b></td>" +
                "<td><b>Failures</b></td>" +
                "<td><b>Seconds since heartbeat</b></td></tr>\n");
      int maxFailures = 0;
      String failureKing = null;
      for (Iterator it = c.iterator(); it.hasNext(); ) {
        TaskTrackerStatus tt = (TaskTrackerStatus) it.next();
        long sinceHeartbeat = System.currentTimeMillis() - tt.getLastSeen();
        if (sinceHeartbeat > 0) {
          sinceHeartbeat = sinceHeartbeat / 1000;
        }
        int numCurTasks = 0;
        for (Iterator it2 = tt.getTaskReports().iterator(); it2.hasNext(); ) {
          it2.next();
          numCurTasks++;
        }
        int numFailures = tt.getFailures();
        if (numFailures > maxFailures) {
          maxFailures = numFailures;
          failureKing = tt.getTrackerName();
        }
        out.print("<tr><td><a href=\"http://");
        out.print(tt.getHost() + ":" + tt.getHttpPort() + "/\">");
        out.print(tt.getTrackerName() + "</a></td><td>");
        out.print(tt.getHost() + "</td><td>" + numCurTasks +
                  "</td><td>" + tt.getMaxMapTasks() +
                  "</td><td>" + tt.getMaxReduceTasks() + 
                  "</td><td>" + numFailures + 
                  "</td><td>" + sinceHeartbeat + "</td></tr>\n");
      }
      out.print("</table>\n");
      out.print("</center>\n");
      if (maxFailures > 0) {
        out.print("Highest Failures: " + failureKing + " with " + maxFailures + 
                  " failures<br>\n");
      }
    }
  }


  private static java.util.List _jspx_dependants;

  public Object getDependants() {
    return _jspx_dependants;
  }

  public void _jspService(HttpServletRequest request, HttpServletResponse response)
        throws java.io.IOException, ServletException {

    JspFactory _jspxFactory = null;
    PageContext pageContext = null;
    HttpSession session = null;
    ServletContext application = null;
    ServletConfig config = null;
    JspWriter out = null;
    Object page = this;
    JspWriter _jspx_out = null;
    PageContext _jspx_page_context = null;


    try {
      _jspxFactory = JspFactory.getDefaultFactory();
      response.setContentType("text/html; charset=UTF-8");
      pageContext = _jspxFactory.getPageContext(this, request, response,
                        null, true, 8192, true);
      _jspx_page_context = pageContext;
      application = pageContext.getServletContext();
      config = pageContext.getServletConfig();
      session = pageContext.getSession();
      out = pageContext.getOut();
      _jspx_out = out;

      out.write('\n');

  JobTracker tracker = (JobTracker) application.getAttribute("job.tracker");
  String trackerName = 
           StringUtils.simpleHostname(tracker.getJobTrackerMachine());
  String type = request.getParameter("type");

      out.write('\n');
      out.write("\n\n<html>\n\n<title>");
      out.print(trackerName);
      out.write(" Hadoop Machine List</title>\n\n<body>\n<h1><a href=\"jobtracker.jsp\">");
      out.print(trackerName);
      out.write("</a> Hadoop Machine List</h1>\n\n<h2>Task Trackers</h2>\n");

  generateTaskTrackerTable(out, type, tracker);

      out.write('\n');
      out.write('\n');

out.println(ServletUtil.htmlFooter());

      out.write('\n');
    } catch (Throwable t) {
      if (!(t instanceof SkipPageException)){
        out = _jspx_out;
        if (out != null && out.getBufferSize() != 0)
          out.clearBuffer();
        if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
      }
    } finally {
      if (_jspxFactory != null) _jspxFactory.releasePageContext(_jspx_page_context);
    }
  }
}