org.apache.accumulo.server.security.delegation

Class AuthenticationTokenSecretManager

java.lang.Object

org.apache.hadoop.security.token.SecretManager<AuthenticationTokenIdentifier>

org.apache.accumulo.server.security.delegation.AuthenticationTokenSecretManager

public class AuthenticationTokenSecretManager
extends org.apache.hadoop.security.token.SecretManager<AuthenticationTokenIdentifier>

Manages an internal list of secret keys used to sign new authentication tokens as they are generated, and to validate existing tokens used for authentication. Each TabletServer, in addition to the Master, has an instance of this SecretManager so that each can authenticate requests from clients presenting delegation tokens. The Master will also run an instance of AuthenticationTokenKeyManager which handles generation of new keys and removal of old keys. That class will call the methods here to ensure the in-memory cache is consistent with what is advertised in ZooKeeper.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.security.token.SecretManager

org.apache.hadoop.security.token.SecretManager.InvalidToken

Constructor Summary

Constructors

Constructor and Description
AuthenticationTokenSecretManager(Instance instance, long tokenMaxLifetime) Create a new secret manager instance for generating keys.

Method Summary

Methods

Modifier and Type	Method and Description
void	addKey(AuthenticationKey key) Add the provided key to the in-memory copy of all AuthenticationKeys.
AuthenticationTokenIdentifier	createIdentifier()
protected byte[]	createPassword(AuthenticationTokenIdentifier identifier)
static SecretKey	createSecretKey(byte[] raw)
protected SecretKey	generateSecret()
Map.Entry<org.apache.hadoop.security.token.Token<AuthenticationTokenIdentifier>,AuthenticationTokenIdentifier>	generateToken(String username, DelegationTokenConfig cfg) Generates a delegation token for the user with the provided username.
void	removeAllKeys() Atomic operation to remove all AuthenticationKeys
byte[]	retrievePassword(AuthenticationTokenIdentifier identifier)

Methods inherited from class org.apache.hadoop.security.token.SecretManager

checkAvailableForRead, createPassword

Methods inherited from class java.lang.Object

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

Constructor Detail

AuthenticationTokenSecretManager

public AuthenticationTokenSecretManager(Instance instance,
                                long tokenMaxLifetime)

Create a new secret manager instance for generating keys.

Parameters:

instance - Accumulo instance

tokenMaxLifetime - Maximum age (in milliseconds) before a token expires and is no longer valid

Method Detail

createPassword

protected byte[] createPassword(AuthenticationTokenIdentifier identifier)

Specified by:

createPassword in class org.apache.hadoop.security.token.SecretManager<AuthenticationTokenIdentifier>

retrievePassword

public byte[] retrievePassword(AuthenticationTokenIdentifier identifier)
                        throws org.apache.hadoop.security.token.SecretManager.InvalidToken

Specified by:

retrievePassword in class org.apache.hadoop.security.token.SecretManager<AuthenticationTokenIdentifier>

Throws:

org.apache.hadoop.security.token.SecretManager.InvalidToken

createIdentifier

public AuthenticationTokenIdentifier createIdentifier()

Specified by:

createIdentifier in class org.apache.hadoop.security.token.SecretManager<AuthenticationTokenIdentifier>

generateToken

public Map.Entry<org.apache.hadoop.security.token.Token<AuthenticationTokenIdentifier>,AuthenticationTokenIdentifier> generateToken(String username,
                                                                                                                           DelegationTokenConfig cfg)
                                                                                                                             throws AccumuloException

Generates a delegation token for the user with the provided username.

Parameters:

username - The client to generate the delegation token for.

cfg - A configuration object for obtaining the delegation token

Returns:

A delegation token for username created using the currentKey.

Throws:

AccumuloException

addKey

public void addKey(AuthenticationKey key)

Add the provided key to the in-memory copy of all AuthenticationKeys.

Parameters:

key - The key to add.

removeAllKeys

public void removeAllKeys()

Atomic operation to remove all AuthenticationKeys

generateSecret

protected SecretKey generateSecret()

Overrides:

generateSecret in class org.apache.hadoop.security.token.SecretManager<AuthenticationTokenIdentifier>

createSecretKey

public static SecretKey createSecretKey(byte[] raw)