org.apache.hadoop.crypto.key
Class KeyProviderDelegationTokenExtension

java.lang.Object
  org.apache.hadoop.crypto.key.KeyProvider
      org.apache.hadoop.crypto.key.KeyProviderExtension<KeyProviderDelegationTokenExtension.DelegationTokenExtension>
          org.apache.hadoop.crypto.key.KeyProviderDelegationTokenExtension

public class KeyProviderDelegationTokenExtension
extends KeyProviderExtension<KeyProviderDelegationTokenExtension.DelegationTokenExtension>

A KeyProvider extension with the ability to add a renewer's Delegation Tokens to the provided Credentials.

Nested Class Summary

static interface

KeyProviderDelegationTokenExtension.DelegationTokenExtension DelegationTokenExtension is a type of Extension that exposes methods to needed to work with Delegation Tokens.

Nested classes/interfaces inherited from class org.apache.hadoop.crypto.key.KeyProviderExtension

KeyProviderExtension.Extension

Nested classes/interfaces inherited from class org.apache.hadoop.crypto.key.KeyProvider

KeyProvider.KeyVersion, KeyProvider.Metadata, KeyProvider.Options

Field Summary

Fields inherited from class org.apache.hadoop.crypto.key.KeyProvider

DEFAULT_BITLENGTH, DEFAULT_BITLENGTH_NAME, DEFAULT_CIPHER, DEFAULT_CIPHER_NAME

Method Summary

org.apache.hadoop.security.token.Token<?>[]	addDelegationTokens(String renewer, org.apache.hadoop.security.Credentials credentials) Passes the renewer and Credentials object to the underlying KeyProviderDelegationTokenExtension.DelegationTokenExtension
static KeyProviderDelegationTokenExtension	createKeyProviderDelegationTokenExtension(KeyProvider keyProvider) Creates a KeyProviderDelegationTokenExtension using a given KeyProvider.

Methods inherited from class org.apache.hadoop.crypto.key.KeyProviderExtension

createKey, createKey, deleteKey, flush, getCurrentKey, getExtension, getKeyProvider, getKeys, getKeysMetadata, getKeyVersion, getKeyVersions, getMetadata, isTransient, rollNewVersion, rollNewVersion, toString

Methods inherited from class org.apache.hadoop.crypto.key.KeyProvider

buildVersionName, close, findProvider, generateKey, getBaseName, getConf, options

Methods inherited from class java.lang.Object

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

Method Detail

addDelegationTokens

public org.apache.hadoop.security.token.Token<?>[] addDelegationTokens(String renewer,
                                                                       org.apache.hadoop.security.Credentials credentials)
                                                                throws IOException

Passes the renewer and Credentials object to the underlying KeyProviderDelegationTokenExtension.DelegationTokenExtension

Parameters:

renewer - the user allowed to renew the delegation tokens

credentials - cache in which to add new delegation tokens

Returns:

list of new delegation tokens

Throws:

IOException - thrown if IOException if an IO error occurs.

createKeyProviderDelegationTokenExtension

public static KeyProviderDelegationTokenExtension createKeyProviderDelegationTokenExtension(KeyProvider keyProvider)

Creates a KeyProviderDelegationTokenExtension using a given KeyProvider.

If the given KeyProvider implements the KeyProviderDelegationTokenExtension.DelegationTokenExtension interface the KeyProvider itself will provide the extension functionality, otherwise a default extension implementation will be used.

Parameters:

keyProvider - KeyProvider to use to create the KeyProviderDelegationTokenExtension extension.

Returns:

a KeyProviderDelegationTokenExtension instance using the given KeyProvider.