org.apache.hadoop.hdfs.web.oauth2

Class AccessTokenTimer

java.lang.Object

org.apache.hadoop.hdfs.web.oauth2.AccessTokenTimer

@InterfaceAudience.Public
@InterfaceStability.Evolving
public class AccessTokenTimer
extends Object

Access tokens generally expire. This timer helps keep track of that.

Field Summary

Fields

Modifier and Type	Field and Description
static long	EXPIRE_BUFFER_MS

Constructor Summary

Constructors

Constructor and Description
AccessTokenTimer()
AccessTokenTimer(org.apache.hadoop.util.Timer timer)

Method Summary

Methods

Modifier and Type	Method and Description
long	getNextRefreshMSSinceEpoch() Get next time we should refresh the token.
void	setExpiresIn(String expiresIn) Set when the access token will expire as reported by the oauth server, ie in seconds from now.
void	setExpiresInMSSinceEpoch(String expiresInMSSinceEpoch) Set when the access token will expire in milliseconds from epoch, as required by the WebHDFS configuration.
boolean	shouldRefresh() Return true if the current token has expired or will expire within the EXPIRE_BUFFER_MS (to give ample wiggle room for the call to be made to the server).

Methods inherited from class java.lang.Object

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

Field Detail

EXPIRE_BUFFER_MS

public static final long EXPIRE_BUFFER_MS

See Also:

Constant Field Values

Constructor Detail

AccessTokenTimer

public AccessTokenTimer()

AccessTokenTimer

public AccessTokenTimer(org.apache.hadoop.util.Timer timer)

Parameters:

timer - Timer instance for unit testing

Method Detail

setExpiresIn

public void setExpiresIn(String expiresIn)

Set when the access token will expire as reported by the oauth server, ie in seconds from now.

Parameters:

expiresIn - Access time expiration as reported by OAuth server

setExpiresInMSSinceEpoch

public void setExpiresInMSSinceEpoch(String expiresInMSSinceEpoch)

Set when the access token will expire in milliseconds from epoch, as required by the WebHDFS configuration. This is a bit hacky and lame.

Parameters:

expiresInMSSinceEpoch - Access time expiration in ms since epoch.

getNextRefreshMSSinceEpoch

public long getNextRefreshMSSinceEpoch()

Get next time we should refresh the token.

Returns:

Next time since epoch we'll need to refresh the token.

shouldRefresh

public boolean shouldRefresh()

Return true if the current token has expired or will expire within the EXPIRE_BUFFER_MS (to give ample wiggle room for the call to be made to the server).