| <% |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 at |
| * |
| * 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. |
| */ |
| %> |
| <%@ page |
| contentType="text/html; charset=UTF-8" |
| import="javax.servlet.*" |
| import="javax.servlet.http.*" |
| import="java.io.*" |
| import="java.util.*" |
| import="org.apache.hadoop.hdfs.*" |
| import="org.apache.hadoop.hdfs.server.namenode.*" |
| import="org.apache.hadoop.hdfs.server.datanode.*" |
| import="org.apache.hadoop.hdfs.protocol.*" |
| import="org.apache.hadoop.util.*" |
| import="java.text.DateFormat" |
| import="java.net.InetAddress" |
| import="java.net.URLEncoder" |
| %> |
| <%! |
| public void redirectToRandomDataNode( |
| NameNode nn, |
| HttpServletResponse resp) throws IOException { |
| FSNamesystem fsn = nn.getNamesystem(); |
| String datanode = fsn.randomDataNode(); |
| String redirectLocation; |
| String nodeToRedirect; |
| int redirectPort; |
| if (datanode != null) { |
| redirectPort = Integer.parseInt(datanode.substring(datanode.indexOf(':') + 1)); |
| nodeToRedirect = datanode.substring(0, datanode.indexOf(':')); |
| } |
| else { |
| nodeToRedirect = nn.getHttpAddress().getHostName(); |
| redirectPort = nn.getHttpAddress().getPort(); |
| } |
| String fqdn = InetAddress.getByName(nodeToRedirect).getCanonicalHostName(); |
| redirectLocation = "http://" + fqdn + ":" + redirectPort + |
| "/browseDirectory.jsp?namenodeInfoPort=" + |
| nn.getHttpAddress().getPort() + |
| "&dir=" + URLEncoder.encode("/", "UTF-8"); |
| resp.sendRedirect(redirectLocation); |
| } |
| %> |
| |
| <html> |
| |
| <title></title> |
| |
| <body> |
| <% |
| NameNode nn = (NameNode)application.getAttribute("name.node"); |
| redirectToRandomDataNode(nn, response); |
| %> |
| <hr> |
| |
| <h2>Local logs</h2> |
| <a href="/logs/">Log</a> directory |
| |
| <% |
| out.println(ServletUtil.htmlFooter()); |
| %> |
