<%!
/**
* 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 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="java.net.*"
import="org.apache.hadoop.hdfs.*"
import="org.apache.hadoop.hdfs.server.namenode.*"
import="org.apache.hadoop.hdfs.server.datanode.*"
import="org.apache.hadoop.hdfs.server.common.*"
import="org.apache.hadoop.hdfs.protocol.*"
import="org.apache.hadoop.io.*"
import="org.apache.hadoop.conf.*"
import="org.apache.hadoop.net.DNS"
import="org.apache.hadoop.security.token.Token"
import="org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier"
import="org.apache.hadoop.util.*"
import="org.apache.hadoop.net.NetUtils"
import="org.apache.hadoop.security.UserGroupInformation"
import="org.apache.hadoop.http.HtmlQuoting"
import="java.text.DateFormat"
%>
<%!
static JspHelper jspHelper = new JspHelper();
public void generateFileChunks(JspWriter out, HttpServletRequest req,
Configuration conf
) throws IOException, InterruptedException {
long startOffset = 0;
int chunkSizeToView = 0;
String tokenString = req.getParameter(JspHelper.DELEGATION_PARAMETER_NAME);
String referrer = req.getParameter("referrer");
boolean noLink = false;
if (referrer == null) {
noLink = true;
}
String filename = HtmlQuoting.unquoteHtmlChars(req.getParameter("filename"));
if (filename == null) {
out.print("Invalid input (file name absent)");
return;
}
String namenodeInfoPortStr = req.getParameter("namenodeInfoPort");
int namenodeInfoPort = -1;
if (namenodeInfoPortStr != null)
namenodeInfoPort = Integer.parseInt(namenodeInfoPortStr);
String chunkSizeToViewStr = req.getParameter("chunkSizeToView");
if (chunkSizeToViewStr != null && Integer.parseInt(chunkSizeToViewStr) > 0)
chunkSizeToView = Integer.parseInt(chunkSizeToViewStr);
else chunkSizeToView = JspHelper.getDefaultChunkSize(conf);
if (!noLink) {
out.print("
Tail of File: ");
JspHelper.printPathWithLinks(HtmlQuoting.quoteHtmlChars(filename),
out, namenodeInfoPort, tokenString);
out.print("