| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * you may obtain a copy of the License from |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package edu.uci.ics.hyracks.control.cc.web; |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.Map; |
| |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.eclipse.jetty.server.Request; |
| import org.eclipse.jetty.server.handler.AbstractHandler; |
| |
| import edu.uci.ics.hyracks.control.cc.ClusterControllerService; |
| import edu.uci.ics.hyracks.control.cc.NodeControllerState; |
| import edu.uci.ics.hyracks.control.cc.jobqueue.SynchronizableRunnable; |
| |
| public class AdminConsoleHandler extends AbstractHandler { |
| private ClusterControllerService ccs; |
| |
| public AdminConsoleHandler(ClusterControllerService ccs) { |
| this.ccs = ccs; |
| } |
| |
| @Override |
| public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) |
| throws IOException, ServletException { |
| if (!"/".equals(target)) { |
| return; |
| } |
| response.setContentType("text/html;charset=utf-8"); |
| response.setStatus(HttpServletResponse.SC_OK); |
| baseRequest.setHandled(true); |
| final PrintWriter writer = response.getWriter(); |
| writer.println("<html><head><title>Hyracks Admin Console</title></head><body>"); |
| writer.println("<h1>Hyracks Admin Console</h1>"); |
| writer.println("<h2>Node Controllers</h2>"); |
| writer.println("<table><tr><td>Node Id</td><td>Host</td></tr>"); |
| try { |
| ccs.getJobQueue().scheduleAndSync(new SynchronizableRunnable() { |
| @Override |
| protected void doRun() throws Exception { |
| for (Map.Entry<String, NodeControllerState> e : ccs.getNodeMap().entrySet()) { |
| try { |
| writer.print("<tr><td>"); |
| writer.print(e.getKey()); |
| writer.print("</td><td>"); |
| writer.print(e.getValue().getLastHeartbeatDuration()); |
| writer.print("</td></tr>"); |
| } catch (Exception ex) { |
| } |
| } |
| } |
| }); |
| } catch (Exception e) { |
| throw new IOException(e); |
| } |
| writer.println("</table>"); |
| writer.println("</body></html>"); |
| writer.flush(); |
| } |
| } |
