Package org.apache.hadoop.security.authentication.util

Class SignerSecretProvider

java.lang.Object

org.apache.hadoop.security.authentication.util.SignerSecretProvider

Direct Known Subclasses:

FileSignerSecretProvider, MapRSignerSecretProvider, RolloverSignerSecretProvider

@Unstable
@Private
public abstract class SignerSecretProvider
extends java.lang.Object

The SignerSecretProvider is an abstract way to provide a secret to be used by the Signer so that we can have different implementations that potentially do more complicated things in the backend. See the RolloverSignerSecretProvider class for an implementation that supports rolling over the secret at a regular interval.

Constructor Summary

Constructors

Constructor	Description
SignerSecretProvider()

Method Summary

Modifier and Type	Method	Description
void	destroy()	Will be called on shutdown; subclasses should perform any cleanup here.
abstract byte[][]	getAllSecrets()	Returns all secrets that a cookie could have been signed with and are still valid; this should include the secret returned by getCurrentSecret().
abstract byte[]	getCurrentSecret()	Returns the current secret to be used by the Signer for signing new cookies.
abstract void	init(java.util.Properties config, javax.servlet.ServletContext servletContext, long tokenValidity)	Initialize the SignerSecretProvider

Methods inherited from class java.lang.Object

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

Constructor Detail

SignerSecretProvider

public SignerSecretProvider()

Method Detail

init

public abstract void init(java.util.Properties config,
                          javax.servlet.ServletContext servletContext,
                          long tokenValidity)
                   throws java.lang.Exception

Initialize the SignerSecretProvider

Parameters:

config - configuration properties

servletContext - servlet context

tokenValidity - The amount of time a token is valid for

Throws:

java.lang.Exception - thrown if an error occurred

destroy

public void destroy()

Will be called on shutdown; subclasses should perform any cleanup here.

getCurrentSecret

public abstract byte[] getCurrentSecret()

Returns the current secret to be used by the Signer for signing new cookies. This should never return null.

Callers should be careful not to modify the returned value.

Returns:

the current secret

getAllSecrets

public abstract byte[][] getAllSecrets()

Returns all secrets that a cookie could have been signed with and are still valid; this should include the secret returned by getCurrentSecret().

Callers should be careful not to modify the returned value.

Returns:

the secrets