org.apache.accumulo.server.security.delegation

Class ZooAuthenticationKeyDistributor

java.lang.Object

org.apache.accumulo.server.security.delegation.ZooAuthenticationKeyDistributor

public class ZooAuthenticationKeyDistributor
extends Object

Class that manages distribution of AuthenticationKeys, Accumulo's secret in the delegation token model, to other Accumulo nodes via ZooKeeper.

Constructor Summary

Constructors

Constructor and Description
ZooAuthenticationKeyDistributor(ZooReaderWriter zk, String baseNode)

Method Summary

Modifier and Type	Method and Description
void	advertise(AuthenticationKey newKey) Add the given AuthenticationKey to ZooKeeper.
List<AuthenticationKey>	getCurrentKeys() Fetch all AuthenticationKeys currently stored in ZooKeeper beneath the configured baseNode.
void	initialize() Ensures that ZooKeeper is in a correct state to perform distribution of AuthenticationKeys.
void	remove(AuthenticationKey key) Remove the given AuthenticationKey from ZooKeeper.

Methods inherited from class java.lang.Object

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

Constructor Detail

ZooAuthenticationKeyDistributor

public ZooAuthenticationKeyDistributor(ZooReaderWriter zk,
                                       String baseNode)

Method Detail

initialize

public void initialize()
                throws org.apache.zookeeper.KeeperException,
                       InterruptedException

Ensures that ZooKeeper is in a correct state to perform distribution of AuthenticationKeys.

Throws:

org.apache.zookeeper.KeeperException

InterruptedException

getCurrentKeys

public List<AuthenticationKey> getCurrentKeys()
                                       throws org.apache.zookeeper.KeeperException,
                                              InterruptedException

Fetch all AuthenticationKeys currently stored in ZooKeeper beneath the configured baseNode.

Returns:

A list of AuthenticationKeys

Throws:

org.apache.zookeeper.KeeperException

InterruptedException

advertise

public void advertise(AuthenticationKey newKey)
               throws org.apache.zookeeper.KeeperException,
                      InterruptedException

Add the given AuthenticationKey to ZooKeeper.

Parameters:

newKey - The key to add to ZooKeeper

Throws:

org.apache.zookeeper.KeeperException

InterruptedException

remove

public void remove(AuthenticationKey key)
            throws org.apache.zookeeper.KeeperException,
                   InterruptedException

Remove the given AuthenticationKey from ZooKeeper. If the node for the provided key doesn't exist in ZooKeeper, a warning is printed but an error is not thrown. Since there is only a single process managing ZooKeeper at one time, any inconsistencies should be client error.

Parameters:

key - The key to remove from ZooKeeper

Throws:

org.apache.zookeeper.KeeperException

InterruptedException