org.apache.hadoop.lib.service.security
Class DelegationTokenManagerService

java.lang.Object
  org.apache.hadoop.lib.server.BaseService
      org.apache.hadoop.lib.service.security.DelegationTokenManagerService

All Implemented Interfaces:

Service, DelegationTokenManager

@InterfaceAudience.Private
public class DelegationTokenManagerService
extends BaseService
implements DelegationTokenManager

DelegationTokenManager service implementation.

Constructor Summary

DelegationTokenManagerService()

Method Summary

void	cancelToken(org.apache.hadoop.security.token.Token<DelegationTokenIdentifier> token, String canceler) Cancels a delegation token.
org.apache.hadoop.security.token.Token<DelegationTokenIdentifier>	createToken(org.apache.hadoop.security.UserGroupInformation ugi, String renewer) Creates a delegation token.
void	destroy() Destroys the service.
Class	getInterface() Returns the service interface.
protected void	init() Initializes the service.
long	renewToken(org.apache.hadoop.security.token.Token<DelegationTokenIdentifier> token, String renewer) Renews a delegation token.
org.apache.hadoop.security.UserGroupInformation	verifyToken(org.apache.hadoop.security.token.Token<DelegationTokenIdentifier> token) Verifies a delegation token.

Methods inherited from class org.apache.hadoop.lib.server.BaseService

getPrefix, getPrefixedName, getServer, getServiceConfig, getServiceDependencies, init, postInit, serverStatusChange

Methods inherited from class java.lang.Object

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

Constructor Detail

DelegationTokenManagerService

public DelegationTokenManagerService()

Method Detail

init

protected void init()
             throws ServiceException

Initializes the service.

Specified by:

init in class BaseService

Throws:

ServiceException - thrown if the service could not be initialized.

destroy

public void destroy()

Destroys the service.

Specified by:

destroy in interface Service

Overrides:

destroy in class BaseService

getInterface

public Class getInterface()

Returns the service interface.

Specified by:

getInterface in interface Service

Returns:

the service interface.

createToken

public org.apache.hadoop.security.token.Token<DelegationTokenIdentifier> createToken(org.apache.hadoop.security.UserGroupInformation ugi,
                                                                                     String renewer)
                                                                              throws DelegationTokenManagerException

Creates a delegation token.

Specified by:

createToken in interface DelegationTokenManager

Parameters:

ugi - UGI creating the token.

renewer - token renewer.

Returns:

new delegation token.

Throws:

DelegationTokenManagerException - thrown if the token could not be created.

renewToken

public long renewToken(org.apache.hadoop.security.token.Token<DelegationTokenIdentifier> token,
                       String renewer)
                throws DelegationTokenManagerException

Renews a delegation token.

Specified by:

renewToken in interface DelegationTokenManager

Parameters:

token - delegation token to renew.

renewer - token renewer.

Returns:

epoc expiration time.

Throws:

DelegationTokenManagerException - thrown if the token could not be renewed.

cancelToken

public void cancelToken(org.apache.hadoop.security.token.Token<DelegationTokenIdentifier> token,
                        String canceler)
                 throws DelegationTokenManagerException

Cancels a delegation token.

Specified by:

cancelToken in interface DelegationTokenManager

Parameters:

token - delegation token to cancel.

canceler - token canceler.

Throws:

DelegationTokenManagerException - thrown if the token could not be canceled.

verifyToken

public org.apache.hadoop.security.UserGroupInformation verifyToken(org.apache.hadoop.security.token.Token<DelegationTokenIdentifier> token)
                                                            throws DelegationTokenManagerException

Verifies a delegation token.

Specified by:

verifyToken in interface DelegationTokenManager

Parameters:

token - delegation token to verify.

Returns:

the UGI for the token.

Throws:

DelegationTokenManagerException - thrown if the token could not be verified.