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

java.lang.Object
  extended by javax.servlet.GenericServlet
      extended by javax.servlet.http.HttpServlet
          extended by org.apache.hadoop.hdfs.server.namenode.DelegationTokenServlet
All Implemented Interfaces:
Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

@InterfaceAudience.Private
public class DelegationTokenServlet
extends javax.servlet.http.HttpServlet

Serve delegation tokens over http for use in hftp.

See Also:
Serialized Form

Field Summary
static String PATH_SPEC
           
 
Constructor Summary
DelegationTokenServlet()
           
 
Method Summary
protected  ClientProtocol createNameNodeProxy()
          Create a NameNode proxy from the current ServletContext.
protected  URI createRedirectUri(String servletpath, org.apache.hadoop.security.UserGroupInformation ugi, DatanodeID host, javax.servlet.http.HttpServletRequest request, NameNode nn)
          Create a URI for redirecting request
protected  void doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)
           
protected  String getFilename(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
          Get filename from the request
protected  org.apache.hadoop.security.UserGroupInformation getUGI(javax.servlet.http.HttpServletRequest request, org.apache.hadoop.conf.Configuration conf)
           
 
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
Constructor Detail

DelegationTokenServlet

public DelegationTokenServlet()
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

createNameNodeProxy

protected ClientProtocol createNameNodeProxy()
                                      throws IOException
Create a NameNode proxy from the current ServletContext.

Throws:
IOException

createRedirectUri

protected URI createRedirectUri(String servletpath,
                                org.apache.hadoop.security.UserGroupInformation ugi,
                                DatanodeID host,
                                javax.servlet.http.HttpServletRequest request,
                                NameNode nn)
                         throws IOException,
                                URISyntaxException
Create a URI for redirecting request

Throws:
IOException
URISyntaxException

getFilename

protected String getFilename(javax.servlet.http.HttpServletRequest request,
                             javax.servlet.http.HttpServletResponse response)
                      throws IOException
Get filename from the request

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


Copyright © 2009 The Apache Software Foundation