Package org.apache.hadoop.hdfs.server.common

Class JspHelper

java.lang.Object

org.apache.hadoop.hdfs.server.common.JspHelper

@Private
public class JspHelper
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CURRENT_CONF
static final String	DELEGATION_PARAMETER_NAME
static final String	NAMENODE_ADDRESS

Method Summary

Modifier and Type	Method	Description
static void	checkUsername(String expected, String name)	Expected user name should be a short name.
static String	getDefaultWebUserName(org.apache.hadoop.conf.Configuration conf)
static String	getRemoteAddr(javax.servlet.http.HttpServletRequest request)
static int	getRemotePort(javax.servlet.http.HttpServletRequest request)
static org.apache.hadoop.security.UserGroupInformation	getUGI(javax.servlet.http.HttpServletRequest request, org.apache.hadoop.conf.Configuration conf)	Same as getUGI(null, request, conf).
static org.apache.hadoop.security.UserGroupInformation	getUGI(javax.servlet.ServletContext context, javax.servlet.http.HttpServletRequest request, org.apache.hadoop.conf.Configuration conf)	Same as getUGI(context, request, conf, KERBEROS_SSL, true).
static org.apache.hadoop.security.UserGroupInformation	getUGI(javax.servlet.ServletContext context, javax.servlet.http.HttpServletRequest request, org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod secureAuthMethod, boolean tryUgiParameter)	Get UserGroupInformation and possibly the delegation token out of the request.

Methods inherited from class java.lang.Object

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

Field Details

CURRENT_CONF

public static final String CURRENT_CONF

See Also:

• Constant Field Values

DELEGATION_PARAMETER_NAME

public static final String DELEGATION_PARAMETER_NAME

See Also:

• Constant Field Values

NAMENODE_ADDRESS

public static final String NAMENODE_ADDRESS

See Also:

• Constant Field Values

Method Details

getDefaultWebUserName

public static String getDefaultWebUserName(org.apache.hadoop.conf.Configuration conf)
                                    throws IOException

Throws:

IOException

getUGI

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

Same as getUGI(null, request, conf).

Throws:

IOException

getUGI

public static org.apache.hadoop.security.UserGroupInformation getUGI(javax.servlet.ServletContext context,
 javax.servlet.http.HttpServletRequest request,
 org.apache.hadoop.conf.Configuration conf)
                                                              throws IOException

Same as getUGI(context, request, conf, KERBEROS_SSL, true).

Throws:

IOException

getUGI

public static org.apache.hadoop.security.UserGroupInformation getUGI(javax.servlet.ServletContext context,
 javax.servlet.http.HttpServletRequest request,
 org.apache.hadoop.conf.Configuration conf,
 org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod secureAuthMethod,
 boolean tryUgiParameter)
                                                              throws IOException

Get UserGroupInformation and possibly the delegation token out of the request.

Parameters:

context - the ServletContext that is serving this request.

request - the http request

conf - configuration

secureAuthMethod - the AuthenticationMethod used in secure mode.

tryUgiParameter - Should it try the ugi parameter?

Returns:

a new user from the request

Throws:

org.apache.hadoop.security.AccessControlException - if the request has no token

IOException

getRemoteAddr

public static String getRemoteAddr(javax.servlet.http.HttpServletRequest request)

getRemotePort

public static int getRemotePort(javax.servlet.http.HttpServletRequest request)

checkUsername

public static void checkUsername(String expected,
 String name)
                          throws IOException

Expected user name should be a short name.

Throws:

IOException