org.hbase.async.auth

Class Login

java.lang.Object

org.hbase.async.auth.Login

public class Login
extends Object

This class is responsible for refreshing credentials for logins. This is a singleton class that will only allow authentication for one user against HBase per JVM. This class was culled from zookeeper which was culled from hadoop with some slight changes including using the HBaseClient's timer to refresh tokens instead of firing up a separate thread and passing settings from the config class. (and formatting to match AsyncHBase's code base)

Field Summary

Fields

Modifier and Type	Field and Description
static String	LOGIN_CONTEXT_NAME_KEY Sasl config string for HBase

Method Summary

Methods

Modifier and Type	Method and Description
Subject	getSubject()
static void	initUserIfNeeded(Config config, org.jboss.netty.util.HashedWheelTimer timer, String login_context_name, CallbackHandler callback_handler) Attempts to set the singleton and authenticate using the given context and callback.

Methods inherited from class java.lang.Object

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

Field Detail

LOGIN_CONTEXT_NAME_KEY

public static final String LOGIN_CONTEXT_NAME_KEY

Sasl config string for HBase

See Also:

Constant Field Values

Method Detail

initUserIfNeeded

public static void initUserIfNeeded(Config config,
                    org.jboss.netty.util.HashedWheelTimer timer,
                    String login_context_name,
                    CallbackHandler callback_handler)
                             throws LoginException

Attempts to set the singleton and authenticate using the given context and callback. If we're already logged in then this is a no-op and the callback is ignored.

Parameters:

config - The AsyncHBase config to load settings from

timer - A timer to use for renewing tickets

login_context_name - Name of section in JAAS file that will be use to login. Passed as first param to javax.security.auth.login.LoginContext().

callback_handler - The callback to return results to. Passed as second param to javax.security.auth.login.LoginContext().

Throws:

LoginException - If login failed

getSubject

public Subject getSubject()

Returns:

the current subject