001    package org.apache.hadoop.hdfs.server.namenode;
002    
003    import javax.servlet.*;
004    import javax.servlet.http.*;
005    import javax.servlet.jsp.*;
006    import org.apache.hadoop.util.ServletUtil;
007    import org.apache.hadoop.hdfs.server.namenode.ClusterJspHelper.DecommissionStatus;
008    import java.util.List;
009    import org.znerd.xmlenc.*;
010    
011    public 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    }