Package io.grpc.rls

Class CachingRlsLbClient.RlsAsyncLruCache

java.lang.Object

io.grpc.rls.LinkedHashLruCache<RlsProtoData.RouteLookupRequest,CachingRlsLbClient.CacheEntry>

io.grpc.rls.CachingRlsLbClient.RlsAsyncLruCache

All Implemented Interfaces:

LruCache<RlsProtoData.RouteLookupRequest,CachingRlsLbClient.CacheEntry>

Enclosing class:

CachingRlsLbClient

private static final class CachingRlsLbClient.RlsAsyncLruCache
extends LinkedHashLruCache<RlsProtoData.RouteLookupRequest,CachingRlsLbClient.CacheEntry>

Implementation of LinkedHashLruCache for RLS.

Nested Class Summary

Nested classes/interfaces inherited from interface io.grpc.rls.LruCache

LruCache.EvictionListener<K,V>, LruCache.EvictionType

Field Summary

Fields

Modifier and Type	Field	Description
private CachingRlsLbClient.RlsLbHelper	helper

Constructor Summary

Constructors

Constructor	Description
RlsAsyncLruCache(long maxEstimatedSizeBytes, LruCache.EvictionListener<RlsProtoData.RouteLookupRequest,CachingRlsLbClient.CacheEntry> evictionListener, com.google.common.base.Ticker ticker, CachingRlsLbClient.RlsLbHelper helper)

Method Summary

Modifier and Type	Method	Description
CachingRlsLbClient.CacheEntry	cacheAndClean(RlsProtoData.RouteLookupRequest key, CachingRlsLbClient.CacheEntry value)
protected int	estimateSizeOf(RlsProtoData.RouteLookupRequest key, CachingRlsLbClient.CacheEntry value)	Returns estimated size of entry to keep track.
protected boolean	isExpired(RlsProtoData.RouteLookupRequest key, CachingRlsLbClient.CacheEntry value, long nowNanos)	Determines if the entry is already expired or not.
protected boolean	shouldInvalidateEldestEntry(RlsProtoData.RouteLookupRequest eldestKey, CachingRlsLbClient.CacheEntry eldestValue, long now)	Determines if the eldest entry should be kept or not when the cache size limit is reached.

Methods inherited from class io.grpc.rls.LinkedHashLruCache

cache, cleanupExpiredEntries, close, estimatedMaxSizeBytes, estimatedSize, estimatedSizeBytes, fitToLimit, hasCacheEntry, invalidate, invalidateAll, read, resize, updateEntrySize, values

Methods inherited from class java.lang.Object

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

Field Detail

helper

private final CachingRlsLbClient.RlsLbHelper helper

Constructor Detail

RlsAsyncLruCache

RlsAsyncLruCache(long maxEstimatedSizeBytes,
                 @Nullable
                 LruCache.EvictionListener<RlsProtoData.RouteLookupRequest,CachingRlsLbClient.CacheEntry> evictionListener,
                 com.google.common.base.Ticker ticker,
                 CachingRlsLbClient.RlsLbHelper helper)

Method Detail

isExpired

protected boolean isExpired(RlsProtoData.RouteLookupRequest key,
                            CachingRlsLbClient.CacheEntry value,
                            long nowNanos)

Description copied from class: LinkedHashLruCache

Determines if the entry is already expired or not.

Specified by:

isExpired in class LinkedHashLruCache<RlsProtoData.RouteLookupRequest,CachingRlsLbClient.CacheEntry>

estimateSizeOf

protected int estimateSizeOf(RlsProtoData.RouteLookupRequest key,
                             CachingRlsLbClient.CacheEntry value)

Description copied from class: LinkedHashLruCache

Returns estimated size of entry to keep track. If it always returns 1, the max size bytes behaves like max number of entry (default behavior).

Overrides:

estimateSizeOf in class LinkedHashLruCache<RlsProtoData.RouteLookupRequest,CachingRlsLbClient.CacheEntry>

shouldInvalidateEldestEntry

protected boolean shouldInvalidateEldestEntry(RlsProtoData.RouteLookupRequest eldestKey,
                                              CachingRlsLbClient.CacheEntry eldestValue,
                                              long now)

Description copied from class: LinkedHashLruCache

Determines if the eldest entry should be kept or not when the cache size limit is reached. Note that LruCache is access level and the eldest is determined by access pattern.

Overrides:

shouldInvalidateEldestEntry in class LinkedHashLruCache<RlsProtoData.RouteLookupRequest,CachingRlsLbClient.CacheEntry>

cacheAndClean

public CachingRlsLbClient.CacheEntry cacheAndClean(RlsProtoData.RouteLookupRequest key,
                                                   CachingRlsLbClient.CacheEntry value)