Example usage for com.google.common.cache CacheBuilder removalListener

Introduction

In this page you can find the example usage for com.google.common.cache CacheBuilder removalListener.

Prototype

RemovalListener removalListener

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Usage

From source file:ratpack.session.SessionModule.java

/**
 * A builder for an alternative cache for the default in memory store.
 * <p>/*  w w  w  . j  a  va  2  s . c o  m*/
 * This method can be used from within a custom {@link Module}.
 * <pre class="java">{@code
 * import com.google.inject.AbstractModule;
 * import ratpack.session.SessionModule;
 *
 * public class CustomSessionModule extends AbstractModule {
 *   protected void configure() {
 *     SessionModule.memoryStore(binder(), c -> c.maximumSize(100));
 *   }
 * }
 * }</pre>
 * }<p>
 * This method binds the built cache with the {@link #LOCAL_MEMORY_SESSION_CACHE_BINDING_KEY} key.
 * It also implicitly registers a {@link RemovalListener}, that releases the byte buffers as they are discarded.
 *
 * @param binder the guice binder
 * @param config the cache configuration
 */
public static void memoryStore(Binder binder, Consumer<? super CacheBuilder<AsciiString, ByteBuf>> config) {
    binder.bind(LOCAL_MEMORY_SESSION_CACHE_BINDING_KEY).toProvider(() -> {
        CacheBuilder<AsciiString, ByteBuf> cacheBuilder = Types.cast(CacheBuilder.newBuilder());
        cacheBuilder.removalListener(n -> n.getValue().release());
        config.accept(cacheBuilder);
        return cacheBuilder.build();
    }).in(Scopes.SINGLETON);
}

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From source file:org.locationtech.geogig.storage.cache.SharedCache.java

@VisibleForTesting
static SharedCache build(int L1capacity, long maxCacheSizeBytes) {
    checkArgument(L1capacity >= 0);/*from  w w  w .  j  a v a 2 s.c o  m*/
    checkArgument(maxCacheSizeBytes >= 0, "Cache size can't be < 0, 0 meaning no cache at all");

    if (0L == maxCacheSizeBytes) {
        return NO_CACHE;
    }

    int initialCapacityCount = 1_000_000;
    int concurrencyLevel = 16;

    CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder();
    cacheBuilder = cacheBuilder.maximumWeight(maxCacheSizeBytes);
    cacheBuilder.weigher(Impl.SizeTracker.WEIGHER);

    cacheBuilder.initialCapacity(initialCapacityCount);
    cacheBuilder.concurrencyLevel(concurrencyLevel);
    cacheBuilder.recordStats();

    Impl.SizeTracker sizeTracker = new Impl.SizeTracker();
    cacheBuilder.removalListener(sizeTracker);

    Cache<Key, byte[]> byteCache = cacheBuilder.build();

    return new Impl(L1capacity, byteCache, sizeTracker);
}

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From source file:org.locationtech.geogig.storage.postgresql.PGCache.java

private static PGCache build(Integer initialCapacityCount, Integer concurrencyLevel2, Long maxWeightBytes,
        Optional<Integer> expireSeconds) {
    CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder();
    cacheBuilder = cacheBuilder.maximumWeight(maxWeightBytes);
    cacheBuilder.weigher(weigher);/*from  w ww  .  j  a  v  a  2s  .  co  m*/
    if (expireSeconds.isPresent()) {
        long seconds = expireSeconds.get();
        Preconditions.checkArgument(seconds > -1);
        cacheBuilder.expireAfterAccess(seconds, TimeUnit.SECONDS);
    }
    cacheBuilder.initialCapacity(initialCapacityCount);
    cacheBuilder.concurrencyLevel(concurrencyLevel2);
    cacheBuilder.recordStats();

    SizeTracker sizeTracker = new SizeTracker();
    cacheBuilder.removalListener(sizeTracker);

    Cache<ObjectId, byte[]> byteCache = cacheBuilder.build();

    return new PGCache(byteCache, sizeTracker);
}

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From source file:com.torodb.mongowp.bson.netty.pool.GuavaStringPool.java

@Inject
public GuavaStringPool(StringPoolPolicy heuristic, CacheBuilder<Object, Object> cacheBuilder) {
    super(heuristic);
    cache = cacheBuilder.removalListener(new MyRemovalListener()).build(new MyCacheLoader());
}

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From source file:org.objectfabric.GoogleCache.java

@SuppressWarnings("unchecked")
public GoogleCache(CacheBuilder builder) {
    super(true, new GoogleCacheBackend(builder.build().asMap()));

    builder.removalListener(new RemovalListener() {

        @Override//from w  w  w . ja v a2s .  co m
        public void onRemoval(RemovalNotification notification) {
            onEviction(notification.getValue());
        }
    });
}

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From source file:com.streamsets.pipeline.lib.parser.net.netflow.v9.NetflowV9Decoder.java

public static Cache<FlowSetTemplateCacheKey, FlowSetTemplate> buildTemplateCache(int maxTemplateCacheSize,
        int templateCacheTimeoutMs) {
    CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder();
    if (maxTemplateCacheSize > 0) {
        cacheBuilder = cacheBuilder.maximumSize(maxTemplateCacheSize);
    }//from  www .j av a 2 s  .co  m
    if (templateCacheTimeoutMs > 0) {
        cacheBuilder = cacheBuilder.expireAfterAccess(templateCacheTimeoutMs, TimeUnit.MILLISECONDS);
    }
    if (LOG.isTraceEnabled()) {
        cacheBuilder = cacheBuilder.removalListener(
                (notification) -> LOG.trace("Removing flow set template entry {} for cause: {} ",
                        notification.getKey(), notification.getCause()));
    }
    return cacheBuilder.build();
}

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From source file:com.streamsets.pipeline.lib.jdbc.PreparedStatementCache.java

PreparedStatementCache(Connection connection, String tableName,
        List<JdbcFieldColumnMapping> generatedColumnMappings, List<String> primaryKeyColumns, int opCode,
        int maxCacheSize, boolean caseSensitive) {
    this.jdbcUtil = UtilsProvider.getJdbcUtil();
    this.connection = connection;
    this.tableName = tableName;
    this.generatedColumnMappings = generatedColumnMappings;
    this.primaryKeyColumns = primaryKeyColumns;
    this.opCode = opCode;
    this.caseSensitive = caseSensitive;

    CacheBuilder cacheBuilder = CacheBuilder.newBuilder();
    if (maxCacheSize > -1) {
        cacheBuilder.maximumSize(maxCacheSize);
    }// www. j  a v a  2  s.c o  m

    cacheMap = cacheBuilder.removalListener(new PreparedStatementRemovalListener())
            .build(new PreparedStatementLoader());
}

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From source file:com.davidbracewell.cache.impl.GuavaCache.java

/**
 * Default Constructor/*from w w  w . j a  v  a 2 s.  c o m*/
 *
 * @param specification The cache specification
 */
public GuavaCache(CacheSpec<K, V> specification) {
    super(Preconditions.checkNotNull(specification));
    CacheBuilder<K, V> cacheBuilder = GuavaCacheUtils.cacheBuilderFromSpec(specification);
    if (specification.getRemovalListener() == null) {
        this.cache = cacheBuilder.build();
    } else {
        this.cache = cacheBuilder.removalListener(specification.getRemovalListener()).build();
    }
}

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From source file:com.google.gerrit.server.cache.h2.DefaultCacheFactory.java

@SuppressWarnings("unchecked")
<K, V> CacheBuilder<K, V> create(CacheBinding<K, V> def, boolean unwrapValueHolder) {
    CacheBuilder<K, V> builder = newCacheBuilder();
    builder.recordStats();//  www . j ava2  s.co m
    builder.maximumWeight(cfg.getLong("cache", def.name(), "memoryLimit", def.maximumWeight()));

    builder.removalListener(forwardingRemovalListenerFactory.create(def.name()));

    Weigher<K, V> weigher = def.weigher();
    if (weigher != null && unwrapValueHolder) {
        final Weigher<K, V> impl = weigher;
        weigher = (Weigher<K, V>) new Weigher<K, ValueHolder<V>>() {
            @Override
            public int weigh(K key, ValueHolder<V> value) {
                return impl.weigh(key, value.value);
            }
        };
    } else if (weigher == null) {
        weigher = unitWeight();
    }
    builder.weigher(weigher);

    Long age = def.expireAfterWrite(TimeUnit.SECONDS);
    if (has(def.name(), "maxAge")) {
        builder.expireAfterWrite(ConfigUtil.getTimeUnit(cfg, "cache", def.name(), "maxAge",
                age != null ? age : 0, TimeUnit.SECONDS), TimeUnit.SECONDS);
    } else if (age != null) {
        builder.expireAfterWrite(age, TimeUnit.SECONDS);
    }

    return builder;
}

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From source file:net.voxton.mafiacraft.core.player.PlayerManager.java

/**
 * Creates the player cache./*  w  ww .  j  av  a2 s .  com*/
 */
private void buildCache() {
    CacheBuilder builder = CacheBuilder.newBuilder();

    builder.maximumSize(10000).expireAfterWrite(10, TimeUnit.MINUTES);

    builder.removalListener(new RemovalListener<String, MPlayer>() {

        @Override
        public void onRemoval(RemovalNotification<String, MPlayer> rn) {
            savePlayer(rn.getValue());
        }

    });

    players = builder.build(new CacheLoader<String, MPlayer>() {

        @Override
        public MPlayer load(String key) throws Exception {
            return loadPlayer(key);
        }

    });
}

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