Package org.apache.hadoop.util

Class CacheableIPList

java.lang.Object

org.apache.hadoop.util.CacheableIPList

All Implemented Interfaces:

IPList

public class CacheableIPList
extends Object
implements IPList

CacheableIPList loads a list of subnets from a file. The list is cached and the cache can be refreshed by specifying cache timeout. A negative value of cache timeout disables any caching. Thread safe.

Constructor Summary

Constructors

Constructor	Description
CacheableIPList(FileBasedIPList ipList, long cacheTimeout)

Method Summary

Modifier and Type	Method	Description
boolean	isIn(String ipAddress)	returns true if the ipAddress is in the IPList.
void	refresh()	Refreshes the ip list

Methods inherited from class java.lang.Object

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

Constructor Details

CacheableIPList

public CacheableIPList(FileBasedIPList ipList,
 long cacheTimeout)

Method Details

refresh

public void refresh()

Refreshes the ip list

isIn

public boolean isIn(String ipAddress)

Description copied from interface: IPList

returns true if the ipAddress is in the IPList.

Specified by:

isIn in interface IPList

Parameters:

ipAddress - ipAddress.

Returns:

boolean value indicating whether the ipAddress is in the IPList