org.apache.hive.service.cli.session

Class SessionUtils

java.lang.Object

org.apache.hive.service.cli.session.SessionUtils

public class SessionUtils
extends Object

Constructor Summary

Constructors

Constructor and Description
SessionUtils()

Method Summary

Modifier and Type	Method and Description
static String	addServiceToToken(String tokenStr, String tokenService) Add a given service to delegation token string.
static String	getTokenStrForm(String tokenSignature) Get the string form of the token given a token signature.
static void	setTokenStr(org.apache.hadoop.security.UserGroupInformation ugi, String tokenStr, String tokenService) Create a delegation token object for the given token string and service.

Methods inherited from class java.lang.Object

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

Constructor Detail

SessionUtils

public SessionUtils()

Method Detail

getTokenStrForm

public static String getTokenStrForm(String tokenSignature)
                              throws IOException

Get the string form of the token given a token signature. The signature is used as the value of the "service" field in the token for lookup. Ref: AbstractDelegationTokenSelector in Hadoop. If there exists such a token in the token cache (credential store) of the job, the lookup returns that. This is relevant only when running against a "secure" hadoop release The method gets hold of the tokens if they are set up by hadoop - this should happen on the map/reduce tasks if the client added the tokens into hadoop's credential store in the front end during job submission. The method will select the hive delegation token among the set of tokens and return the string form of it

Parameters:

tokenSignature -

Returns:

the string form of the token found

Throws:

IOException

setTokenStr

public static void setTokenStr(org.apache.hadoop.security.UserGroupInformation ugi,
                               String tokenStr,
                               String tokenService)
                        throws IOException

Create a delegation token object for the given token string and service. Add the token to given UGI

Parameters:

ugi -

tokenStr -

tokenService -

Throws:

IOException

addServiceToToken

public static String addServiceToToken(String tokenStr,
                                       String tokenService)
                                throws IOException

Add a given service to delegation token string.

Parameters:

tokenStr -

tokenService -

Returns:

Throws:

IOException