Java CacheBuilder.expireAfterAccess方法代碼示例

import com.google.common.cache.CacheBuilder; //導入方法依賴的package包/類
/**
 * Creates a new processing unit.
 *
 * @param name name.
 * @param engine the engine.
 * @param inQueue input queue.
 * @param outQueue output queue.
 */
public BaseProcessingUnit(String name, Engine engine, EventQueue inQueue, EventQueue outQueue) {
    super(name, engine);
    this.inQueue = inQueue;
    this.outQueue = outQueue;

    long cacheExpireTime = engine.getDefaultParameters().getProcessingUnitEventProcessorCacheExpireTime();
    if (cacheExpireTime >= 0) {
        // Turn on the cache.
        CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
        if (cacheExpireTime > 0) {
            builder.expireAfterAccess(cacheExpireTime, TimeUnit.MILLISECONDS);
        }

        eventNameProcessorsCache = builder.build(new CacheLoader<String, Set<AtomicReference<T>>>() {

            @Override
            public Set<AtomicReference<T>> load(String eventName) throws Exception {
                return resolveEventProcessors(eventName);
            }
        });
    }
}
 

import com.google.common.cache.CacheBuilder; //導入方法依賴的package包/類
public CachedScriptClassInstancePovider(Engine engine, Function<String, S> createScriptFunction, String format,
        BiFunction<S, Class<T>, T> createInstanceFunction) {
    this.createScriptFunction = createScriptFunction;
    this.format = format;
    this.createInstanceFunction = createInstanceFunction;

    long cacheExpireTime = engine.getDefaultParameters().getScriptClassInstancePoviderCacheExpireTime();
    if (cacheExpireTime >= 0) {
        // Turn on the cache.
        CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
        if (cacheExpireTime > 0) {
            builder.expireAfterAccess(cacheExpireTime, TimeUnit.MILLISECONDS);
        }

        cache = builder.build(new CacheLoader<String, S>() {

            @Override
            public S load(String className) throws Exception {
                return createScript(className);
            }
        });
    }
}
 

import com.google.common.cache.CacheBuilder; //導入方法依賴的package包/類
private MessageSlicer(final Builder builder) {
    this.fileBackedStreamFactory = builder.fileBackedStreamFactory;
    this.messageSliceSize = builder.messageSliceSize;
    this.maxSlicingTries = builder.maxSlicingTries;

    id = SLICER_ID_COUNTER.getAndIncrement();
    this.logContext = builder.logContext + "_slicer-id-" + id;

    CacheBuilder<Identifier, SlicedMessageState<ActorRef>> cacheBuilder =
            CacheBuilder.newBuilder().removalListener(notification -> stateRemoved(notification));
    if (builder.expireStateAfterInactivityDuration > 0) {
        cacheBuilder = cacheBuilder.expireAfterAccess(builder.expireStateAfterInactivityDuration,
                builder.expireStateAfterInactivityUnit);
    }
    stateCache = cacheBuilder.build();
}
 

import com.google.common.cache.CacheBuilder; //導入方法依賴的package包/類
/**
 * Construct a cache using the specified capacity and name.
 * 
 * @param maxItems The cache capacity. 0 = use {@link #DEFAULT_CAPACITY}
 * @param useMaxItems Whether the maxItems value should be applied as a size-cap for the cache.
 * @param cacheName An arbitrary cache name.
 */
@SuppressWarnings("unchecked")
public DefaultSimpleCache(int maxItems, boolean useMaxItems, int ttlSecs, int maxIdleSecs, String cacheName)
{
    if (maxItems == 0)
    {
        maxItems = DEFAULT_CAPACITY;
    }
    else if (maxItems < 0)
    {
        throw new IllegalArgumentException("maxItems may not be negative, but was " + maxItems);
    }
    this.maxItems = maxItems;
    this.useMaxItems = useMaxItems;
    this.ttlSecs = ttlSecs;
    this.maxIdleSecs = maxIdleSecs;
    setBeanName(cacheName);
    
    // The map will have a bounded size determined by the maxItems member variable.
    @SuppressWarnings("rawtypes")
    CacheBuilder builder = CacheBuilder.newBuilder();
    
    if (useMaxItems)
    {
        builder.maximumSize(maxItems);
    }
    if (ttlSecs > 0)
    {
        builder.expireAfterWrite(ttlSecs, TimeUnit.SECONDS);
    }
    if (maxIdleSecs > 0)
    {
        builder.expireAfterAccess(maxIdleSecs, TimeUnit.SECONDS);
    }
    builder.concurrencyLevel(32);
    
    cache = (Cache<K, AbstractMap.SimpleImmutableEntry<K, V>>) builder.build();
}
 

import com.google.common.cache.CacheBuilder; //導入方法依賴的package包/類
private void buildCache() {
    long sizeInBytes = MemorySizeValue.parseBytesSizeValueOrHeapRatio(size, INDICES_CACHE_QUERY_SIZE).bytes();

    CacheBuilder<Key, Value> cacheBuilder = CacheBuilder.newBuilder()
            .maximumWeight(sizeInBytes).weigher(new QueryCacheWeigher()).removalListener(this);
    cacheBuilder.concurrencyLevel(concurrencyLevel);

    if (expire != null) {
        cacheBuilder.expireAfterAccess(expire.millis(), TimeUnit.MILLISECONDS);
    }

    cache = cacheBuilder.build();
}
 

import com.google.common.cache.CacheBuilder; //導入方法依賴的package包/類
@Inject
public ScriptService(Settings settings, Environment env, Set<ScriptEngineService> scriptEngines,
                     ResourceWatcherService resourceWatcherService, ScriptContextRegistry scriptContextRegistry) throws IOException {
    super(settings);
    this.parseFieldMatcher = new ParseFieldMatcher(settings);
    if (Strings.hasLength(settings.get(DISABLE_DYNAMIC_SCRIPTING_SETTING))) {
        throw new IllegalArgumentException(DISABLE_DYNAMIC_SCRIPTING_SETTING + " is not a supported setting, replace with fine-grained script settings. \n" +
                "Dynamic scripts can be enabled for all languages and all operations by replacing `script.disable_dynamic: false` with `script.inline: on` and `script.indexed: on` in elasticsearch.yml");
    }

    this.scriptEngines = scriptEngines;
    this.scriptContextRegistry = scriptContextRegistry;
    int cacheMaxSize = settings.getAsInt(SCRIPT_CACHE_SIZE_SETTING, SCRIPT_CACHE_SIZE_DEFAULT);
    TimeValue cacheExpire = settings.getAsTime(SCRIPT_CACHE_EXPIRE_SETTING, null);
    logger.debug("using script cache with max_size [{}], expire [{}]", cacheMaxSize, cacheExpire);

    this.defaultLang = settings.get(DEFAULT_SCRIPTING_LANGUAGE_SETTING, DEFAULT_LANG);

    CacheBuilder cacheBuilder = CacheBuilder.newBuilder();
    if (cacheMaxSize >= 0) {
        cacheBuilder.maximumSize(cacheMaxSize);
    }
    if (cacheExpire != null) {
        cacheBuilder.expireAfterAccess(cacheExpire.nanos(), TimeUnit.NANOSECONDS);
    }
    this.cache = cacheBuilder.removalListener(new ScriptCacheRemovalListener()).build();

    ImmutableMap.Builder<String, ScriptEngineService> enginesByLangBuilder = ImmutableMap.builder();
    ImmutableMap.Builder<String, ScriptEngineService> enginesByExtBuilder = ImmutableMap.builder();
    for (ScriptEngineService scriptEngine : scriptEngines) {
        for (String type : scriptEngine.types()) {
            enginesByLangBuilder.put(type, scriptEngine);
        }
        for (String ext : scriptEngine.extensions()) {
            enginesByExtBuilder.put(ext, scriptEngine);
        }
    }
    this.scriptEnginesByLang = enginesByLangBuilder.build();
    this.scriptEnginesByExt = enginesByExtBuilder.build();

    this.scriptModes = new ScriptModes(this.scriptEnginesByLang, scriptContextRegistry, settings);

    // add file watcher for static scripts
    scriptsDirectory = env.scriptsFile();
    if (logger.isTraceEnabled()) {
        logger.trace("Using scripts directory [{}] ", scriptsDirectory);
    }
    FileWatcher fileWatcher = new FileWatcher(scriptsDirectory);
    fileWatcher.addListener(new ScriptChangesListener());

    if (settings.getAsBoolean(SCRIPT_AUTO_RELOAD_ENABLED_SETTING, true)) {
        // automatic reload is enabled - register scripts
        resourceWatcherService.add(fileWatcher);
    } else {
        // automatic reload is disable just load scripts once
        fileWatcher.init();
    }
}