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HDFS-2933. Improve DataNode Web UI Index Page. (Vivek Ganesan via Arp…

…it Agarwal)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1515890 13f79535-47bb-0310-9956-ffa450edef68
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arp7 committed Aug 20, 2013
1 parent f7ca7ec commit 3015429368e139bf54a697b93b692caa3629164b
@@ -19,14 +19,17 @@

import java.io.File;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.URI;
import java.net.URL;
import java.net.URLEncoder;
import java.security.PrivilegedExceptionAction;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspWriter;
@@ -36,20 +39,25 @@
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.DFSClient;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.DirectoryListing;
import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
import org.apache.hadoop.hdfs.security.token.block.BlockTokenSecretManager;
import org.apache.hadoop.hdfs.server.common.JspHelper;
import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
import org.apache.hadoop.hdfs.server.namenode.NameNode;
import org.apache.hadoop.hdfs.server.namenode.NameNodeHttpServer;
import org.apache.hadoop.http.HtmlQuoting;
import org.apache.hadoop.http.HttpConfig;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.util.ServletUtil;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.VersionInfo;

@InterfaceAudience.Private
public class DatanodeJspHelper {
@@ -712,4 +720,24 @@ public static DFSClient getDFSClient(final HttpServletRequest request,
final String nnAddr = request.getParameter(JspHelper.NAMENODE_ADDRESS);
return getDFSClient(ugi, nnAddr, conf);
}

/** Return a table containing version information. */
public static String getVersionTable(ServletContext context) {
StringBuilder sb = new StringBuilder();
final DataNode dataNode = (DataNode) context.getAttribute("datanode");
sb.append("<div class='dfstable'><table>");
sb.append("<tr><td class='col1'>Version:</td><td>");
sb.append(VersionInfo.getVersion() + ", " + VersionInfo.getRevision());
sb.append("</td></tr>\n" + "\n <tr><td class='col1'>Compiled:</td><td>"
+ VersionInfo.getDate());
sb.append(" by " + VersionInfo.getUser() + " from "
+ VersionInfo.getBranch());
if (dataNode != null) {
sb.append("</td></tr>\n <tr><td class='col1'>Cluster ID:</td><td>"
+ dataNode.getClusterId());
}
sb.append("</td></tr>\n</table></div>");
return sb.toString();
}

}
@@ -0,0 +1,58 @@
<%
/*
* 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 import="org.apache.hadoop.hdfs.tools.GetConf"%>
<%@page import="org.apache.hadoop.hdfs.server.datanode.DatanodeJspHelper"%>
<%@page import="org.apache.hadoop.hdfs.server.datanode.DataNode"%>
<%@ page
contentType="text/html; charset=UTF-8"
import="org.apache.hadoop.util.ServletUtil"
%>
<%!
//for java.io.Serializable
private static final long serialVersionUID = 1L;
%>
<%
DataNode dataNode = (DataNode)getServletContext().getAttribute("datanode");
String state = dataNode.isDatanodeUp()?"active":"inactive";
String dataNodeLabel = dataNode.getDisplayName();
%>

<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css" href="/static/hadoop.css">
<title>Hadoop DataNode&nbsp;<%=dataNodeLabel%></title>
</head>
<body>
<h1>DataNode '<%=dataNodeLabel%>' (<%=state%>)</h1>
<%= DatanodeJspHelper.getVersionTable(getServletContext()) %>
<br />
<b><a href="/logs/">DataNode Logs</a></b>
<br />
<b><a href="/logLevel">View/Set Log Level</a></b>
<br />
<b><a href="/metrics">Metrics</a></b>
<br />
<b><a href="/conf">Configuration</a></b>
<br />
<b><a href="/blockScannerReport">Block Scanner Report</a></b>
<%
out.println(ServletUtil.htmlFooter());
%>
@@ -0,0 +1,35 @@
<!--
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.
-->
<meta HTTP-EQUIV="REFRESH" content="0;url=dataNodeHome.jsp"/>
<html>
<head>
<title>Hadoop Administration</title>
</head>

<body>

<h1>Hadoop Administration</h1>

<ul>

<li><a href="dataNodeHome.jsp">DataNode Home</a></li>

</ul>

</body>

</html>
@@ -1,5 +1,3 @@
<meta HTTP-EQUIV="REFRESH" content="0;url=dfshealth.jsp"/>
<html>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
@@ -16,6 +14,8 @@
See the License for the specific language governing permissions and
limitations under the License.
-->
<meta HTTP-EQUIV="REFRESH" content="0;url=dfshealth.jsp"/>
<html>
<head>
<title>Hadoop Administration</title>
</head>

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