org.apache.hadoop.hive.thrift
Interface DelegationTokenStore

All Superinterfaces:

Closeable, org.apache.hadoop.conf.Configurable

All Known Implementing Classes:

DBTokenStore, MemoryTokenStore, ZooKeeperTokenStore

public interface DelegationTokenStore
extends org.apache.hadoop.conf.Configurable, Closeable

Interface for pluggable token store that can be implemented with shared external storage for load balancing and high availability (for example using ZooKeeper). Internal, store specific errors are translated into DelegationTokenStore.TokenStoreException.

Nested Class Summary

static class

DelegationTokenStore.TokenStoreException Exception for internal token store errors that typically cannot be handled by the caller.

Method Summary

int	addMasterKey(String s) Add new master key.
boolean	addToken(DelegationTokenIdentifier tokenIdentifier, org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSecretManager.DelegationTokenInformation token) Add token.
List<DelegationTokenIdentifier>	getAllDelegationTokenIdentifiers() List of all token identifiers in the store.
String[]	getMasterKeys() Return all master keys.
org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSecretManager.DelegationTokenInformation	getToken(DelegationTokenIdentifier tokenIdentifier) Get token.
boolean	removeMasterKey(int keySeq) Remove key for given id.
boolean	removeToken(DelegationTokenIdentifier tokenIdentifier) Remove token.
void	setStore(Object hmsHandler)
void	updateMasterKey(int keySeq, String s) Update master key (for expiration and setting store assigned sequence within key)

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Methods inherited from interface java.io.Closeable

close

Method Detail

addMasterKey

int addMasterKey(String s)
                 throws DelegationTokenStore.TokenStoreException

Add new master key. The token store assigns and returns the sequence number. Caller needs to use the identifier to update the key (since it is embedded in the key).

Parameters:

s -

Returns:

sequence number for new key

Throws:

DelegationTokenStore.TokenStoreException

updateMasterKey

void updateMasterKey(int keySeq,
                     String s)
                     throws DelegationTokenStore.TokenStoreException

Update master key (for expiration and setting store assigned sequence within key)

Parameters:

keySeq -

s -

Throws:

DelegationTokenStore.TokenStoreException

removeMasterKey

boolean removeMasterKey(int keySeq)

Remove key for given id.

Parameters:

keySeq -

Returns:

false if key no longer present, true otherwise.

getMasterKeys

String[] getMasterKeys()
                       throws DelegationTokenStore.TokenStoreException

Return all master keys.

Returns:

Throws:

DelegationTokenStore.TokenStoreException

addToken

boolean addToken(DelegationTokenIdentifier tokenIdentifier,
                 org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSecretManager.DelegationTokenInformation token)
                 throws DelegationTokenStore.TokenStoreException

Add token. If identifier is already present, token won't be added.

Parameters:

tokenIdentifier -

token -

Returns:

true if token was added, false for existing identifier

Throws:

DelegationTokenStore.TokenStoreException

getToken

org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSecretManager.DelegationTokenInformation getToken(DelegationTokenIdentifier tokenIdentifier)
                                                                                                                     throws DelegationTokenStore.TokenStoreException

Get token. Returns null if the token does not exist.

Parameters:

tokenIdentifier -

Returns:

Throws:

DelegationTokenStore.TokenStoreException

removeToken

boolean removeToken(DelegationTokenIdentifier tokenIdentifier)
                    throws DelegationTokenStore.TokenStoreException

Remove token. Return value can be used by caller to detect concurrency.

Parameters:

tokenIdentifier -

Returns:

true if token was removed, false if it was already removed.

Throws:

DelegationTokenStore.TokenStoreException

getAllDelegationTokenIdentifiers

List<DelegationTokenIdentifier> getAllDelegationTokenIdentifiers()
                                                                 throws DelegationTokenStore.TokenStoreException

List of all token identifiers in the store. This is used to remove expired tokens and a potential scalability improvement would be to partition by master key id

Returns:

Throws:

DelegationTokenStore.TokenStoreException

setStore

void setStore(Object hmsHandler)
              throws DelegationTokenStore.TokenStoreException

Throws:

DelegationTokenStore.TokenStoreException