Class CsrfPreventionFilter.LruCache<T>

java.lang.Object

org.apache.catalina.filters.CsrfPreventionFilter.LruCache<T>

Type Parameters:

T - The type held by this cache.

All Implemented Interfaces:

Serializable, CsrfPreventionFilter.NonceCache<T>

Enclosing class:

CsrfPreventionFilter

protected static class CsrfPreventionFilter.LruCache<T>
extends Object
implements CsrfPreventionFilter.NonceCache<T>

Despite its name, this is a FIFO cache not an LRU cache. Using an older nonce should not delay its removal from the cache in favour of more recent values.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
LruCache(int cacheSize)	Construct a new LruCache.

Method Summary

Modifier and Type	Method	Description
void	add(T key)	Add a nonce to the cache.
boolean	contains(T key)	Check if the cache contains the given nonce.

Methods inherited from class Object

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

Constructor Details

LruCache

public LruCache(int cacheSize)

Construct a new LruCache.

Parameters:

cacheSize - The maximum number of entries in the cache

Method Details

add

public void add(T key)

Description copied from interface: CsrfPreventionFilter.NonceCache

Add a nonce to the cache.

Specified by:

add in interface CsrfPreventionFilter.NonceCache<T>

Parameters:

key - The nonce to add

contains

public boolean contains(T key)

Description copied from interface: CsrfPreventionFilter.NonceCache

Check if the cache contains the given nonce.

Specified by:

contains in interface CsrfPreventionFilter.NonceCache<T>

Parameters:

key - The nonce to check

Returns:

true if the nonce is in the cache