org.apache.hadoop.hdfs.server.namenode
Class GetDelegationTokenServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.apache.hadoop.hdfs.server.namenode.GetDelegationTokenServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class GetDelegationTokenServlet
extends javax.servlet.http.HttpServlet

Serve delegation tokens over http for use in hftp.

See Also:

Serialized Form

Field Summary

static String	PATH_SPEC
static String	RENEWER

Constructor Summary

GetDelegationTokenServlet()

Method Summary

protected org.apache.hadoop.hdfs.protocol.ClientProtocol	createNameNodeProxy() Create a NameNode proxy from the current ServletContext.
protected void	doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)
protected org.apache.hadoop.security.UserGroupInformation	getUGI(javax.servlet.http.HttpServletRequest request, org.apache.hadoop.conf.Configuration conf)
protected void	writeXml(Exception except, String path, org.znerd.xmlenc.XMLOutputter doc) Write the object to XML format

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PATH_SPEC

public static final String PATH_SPEC

See Also:

Constant Field Values

RENEWER

public static final String RENEWER

See Also:

Constant Field Values

Constructor Detail

GetDelegationTokenServlet

public GetDelegationTokenServlet()

Method Detail

doGet

protected void doGet(javax.servlet.http.HttpServletRequest req,
                     javax.servlet.http.HttpServletResponse resp)
              throws javax.servlet.ServletException,
                     IOException

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

writeXml

protected void writeXml(Exception except,
                        String path,
                        org.znerd.xmlenc.XMLOutputter doc)
                 throws IOException

Write the object to XML format

Throws:

IOException

createNameNodeProxy

protected org.apache.hadoop.hdfs.protocol.ClientProtocol createNameNodeProxy()
                                                                      throws IOException

Create a NameNode proxy from the current ServletContext.

Throws:

IOException

getUGI

protected org.apache.hadoop.security.UserGroupInformation getUGI(javax.servlet.http.HttpServletRequest request,
                                                                 org.apache.hadoop.conf.Configuration conf)
                                                          throws IOException

Throws:

IOException