001package org.apache.hadoop.hdfs.server.namenode;
002
003import javax.servlet.*;
004import javax.servlet.http.*;
005import javax.servlet.jsp.*;
006import org.apache.hadoop.util.ServletUtil;
007import org.apache.hadoop.hdfs.server.namenode.ClusterJspHelper.DecommissionStatus;
008import java.util.List;
009import org.znerd.xmlenc.*;
010
011public final class decommission_jsp extends org.apache.jasper.runtime.HttpJspBase
012    implements org.apache.jasper.runtime.JspSourceDependent {
013
014
015/*
016 * Licensed to the Apache Software Foundation (ASF) under one
017 * or more contributor license agreements.  See the NOTICE file 
018 * distributed with this work for additional information
019 * regarding copyright ownership.  The ASF licenses this file
020 * to you under the Apache License, Version 2.0 (the
021 * "License"); you may not use this file except in compliance
022 * with the License.  You may obtain a copy of the License at
023 *
024 *     http://www.apache.org/licenses/LICENSE-2.0
025 *
026 * Unless required by applicable law or agreed to in writing, software
027 * distributed under the License is distributed on an "AS IS" BASIS,
028 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
029 * See the License for the specific language governing permissions and
030 * limitations under the License.
031 */
032
033
034  //for java.io.Serializable
035  private static final long serialVersionUID = 1L;
036
037  private static java.util.List _jspx_dependants;
038
039  public Object getDependants() {
040    return _jspx_dependants;
041  }
042
043  public void _jspService(HttpServletRequest request, HttpServletResponse response)
044        throws java.io.IOException, ServletException {
045
046    JspFactory _jspxFactory = null;
047    PageContext pageContext = null;
048    HttpSession session = null;
049    ServletContext application = null;
050    ServletConfig config = null;
051    JspWriter out = null;
052    Object page = this;
053    JspWriter _jspx_out = null;
054    PageContext _jspx_page_context = null;
055
056
057    try {
058      _jspxFactory = JspFactory.getDefaultFactory();
059      response.setContentType("application/xml");
060      pageContext = _jspxFactory.getPageContext(this, request, response,
061                        null, true, 8192, true);
062      _jspx_page_context = pageContext;
063      application = pageContext.getServletContext();
064      config = pageContext.getServletConfig();
065      session = pageContext.getSession();
066      out = pageContext.getOut();
067      _jspx_out = out;
068
069      out.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<?xml-stylesheet type=\"text/xsl\" href=\"decommission.xsl\"?>\n");
070
071  /**
072   * This JSP page provides decomission nodes information cross cluster. 
073   * It lists the date nodes with their decommission states/progress 
074   * reported by each name node. 
075   * It eleminates the data nodes who are not in decommission states.
076   */
077  final ClusterJspHelper clusterhealthjsp  = new ClusterJspHelper();
078   DecommissionStatus dInfo = clusterhealthjsp.generateDecommissioningReport();
079   XMLOutputter doc = new XMLOutputter(out, "UTF-8");
080   dInfo.toXML(doc);
081
082    } catch (Throwable t) {
083      if (!(t instanceof SkipPageException)){
084        out = _jspx_out;
085        if (out != null && out.getBufferSize() != 0)
086          out.clearBuffer();
087        if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
088      }
089    } finally {
090      if (_jspxFactory != null) _jspxFactory.releasePageContext(_jspx_page_context);
091    }
092  }
093}