com.nimbusds.common.infinispan

Class CacheWorkArounds<K,V>

java.lang.Object

com.nimbusds.common.infinispan.CacheWorkArounds<K,V>

public class CacheWorkArounds<K,V>
extends Object

Infinispan cache work arounds.

• Fix around invalidation bug, to force cache load before putIfAbsent, replace, delete operations. See tracking Connect2id server issue https://bitbucket.org/connect2id/server/issues/239/race-condition-in-cacheremove-in
• Enforcing zero cache size for "stateless mode" to enable Infinispan to be run in local mode with no in-memory store, using the configured stores instead.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CacheWorkArounds.Mode The handled special modes.

Constructor Summary

Constructors

Constructor and Description
CacheWorkArounds(org.infinispan.Cache<K,V> infinispanCache) Creates a new cache work arounds instance.
CacheWorkArounds(org.infinispan.Cache<K,V> infinispanCache, org.apache.logging.log4j.Logger log) Creates a new cache work arounds instance.

Method Summary

Modifier and Type	Method and Description
void	clearCacheIfStateless() If the cache is in the special "stateless mode" causes the underlying data container (in memory) to be cleared.
static boolean	detectInvalidationMode(org.infinispan.Cache cache) Checks if the specified cache is configured in invalidation mode.
static boolean	detectStatelessMode(org.infinispan.Cache cache) Checks if the specified cache is configured in "stateless mode".
CacheWorkArounds.Mode	getMode() Returns the special work around mode.
boolean	isInvalidation() Returns true if the cache is in invalidation mode.
boolean	isStateless() Returns true if the cache is in the special "stateless mode".

Methods inherited from class java.lang.Object

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

Constructor Detail

CacheWorkArounds

public CacheWorkArounds(org.infinispan.Cache<K,V> infinispanCache)

Creates a new cache work arounds instance.

Parameters:

infinispanCache - The Infinispan cache.

CacheWorkArounds

public CacheWorkArounds(org.infinispan.Cache<K,V> infinispanCache,
                        org.apache.logging.log4j.Logger log)

Creates a new cache work arounds instance.

Parameters:

infinispanCache - The Infinispan cache.

log - Optional logger for the detection, null if not specified.

Method Detail

detectInvalidationMode

public static boolean detectInvalidationMode(org.infinispan.Cache cache)

Checks if the specified cache is configured in invalidation mode.

Parameters:

cache - The cache to check.

Returns:

true if the cache is configured in invalidation mode, else false.

detectStatelessMode

public static boolean detectStatelessMode(org.infinispan.Cache cache)

Checks if the specified cache is configured in "stateless mode".

Parameters:

cache - The cache to check.

Returns:

true if the cache is configured in "stateless mode", else false.

getMode

public CacheWorkArounds.Mode getMode()

Returns the special work around mode.

Returns:

The work around mode, null if none (implies follow regular operation).

isInvalidation

public boolean isInvalidation()

Returns true if the cache is in invalidation mode.

Returns:

true if the cache is in invalidation mode, else false.

isStateless

public boolean isStateless()

Returns true if the cache is in the special "stateless mode".

Returns:

true if the cache is in the "stateless mode", else false.

clearCacheIfStateless

public void clearCacheIfStateless()

If the cache is in the special "stateless mode" causes the underlying data container (in memory) to be cleared. Should be called before get, replace, putIfAbsent, remove and iteration operations.