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

Introduction

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

Prototype

long maximumSize

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Usage

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

/**
 * Converts a CacheSpec into a CacheBuilder
 *
 * @param specification The specification
 * @param <K>           The key type
 * @param <V>           The value type
 * @return The CacheBuilder//from   w  w w .  ja va  2 s  .  c  o m
 */
public static <K, V> CacheBuilder<K, V> cacheBuilderFromSpec(CacheSpec<K, V> specification) {
    CacheBuilder cacheBuilder = CacheBuilder.newBuilder();
    if (specification.getMaxSize() > 0) {
        cacheBuilder.maximumSize(specification.getMaxSize());
    }
    if (specification.getConcurrencyLevel() > 0) {
        cacheBuilder.concurrencyLevel(specification.getMaxSize());
    }
    if (specification.getInitialCapacity() > 0) {
        cacheBuilder.initialCapacity(specification.getInitialCapacity());
    }
    if (specification.getExpiresAfterAccess() > 0) {
        cacheBuilder.expireAfterAccess(specification.getExpiresAfterAccess(), TimeUnit.MILLISECONDS);
    }
    if (specification.getExpiresAfterWrite() > 0) {
        cacheBuilder.expireAfterWrite(specification.getExpiresAfterWrite(), TimeUnit.MILLISECONDS);
    }
    if (specification.isWeakKeys()) {
        cacheBuilder.weakKeys();
    }
    if (specification.isWeakValues()) {
        cacheBuilder.weakValues();
    }
    return Cast.as(cacheBuilder);
}

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From source file:no.digipost.cache.inmemory.CacheConfig.java

public static CacheConfig maximumSize(final long size) {
    return new CacheConfig() {
        @Override//from w w w. java 2 s  . c  om
        public CacheBuilder<Object, Object> configure(CacheBuilder<Object, Object> builder) {
            LOG.info("Maximum size = {}", size);
            return builder.maximumSize(size);
        }
    };
}

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From source file:com.google.gitiles.ConfigUtil.java

/**
 * Get a {@link CacheBuilder} from a config.
 *
 * @param config JGit config object.//w ww . jav a 2  s .  co  m
 * @param name name of the cache subsection under the "cache" section.
 * @return a new cache builder.
 */
public static CacheBuilder<Object, Object> getCacheBuilder(Config config, String name) {
    CacheBuilder<Object, Object> b = CacheBuilder.newBuilder();
    try {
        if (config.getString("cache", name, "maximumWeight") != null) {
            b.maximumWeight(config.getLong("cache", name, "maximumWeight", 20 << 20));
        }
        if (config.getString("cache", name, "maximumSize") != null) {
            b.maximumSize(config.getLong("cache", name, "maximumSize", 16384));
        }
        Duration expireAfterWrite = getDuration(config, "cache", name, "expireAfterWrite", null);
        if (expireAfterWrite != null) {
            b.expireAfterWrite(expireAfterWrite.getMillis(), TimeUnit.MILLISECONDS);
        }
        Duration expireAfterAccess = getDuration(config, "cache", name, "expireAfterAccess", null);
        if (expireAfterAccess != null) {
            b.expireAfterAccess(expireAfterAccess.getMillis(), TimeUnit.MILLISECONDS);
        }
        // Add other methods as needed.
    } catch (IllegalArgumentException e) {
        throw new IllegalArgumentException("Error getting CacheBuilder for " + name, e);
    } catch (IllegalStateException e) {
        throw new IllegalStateException("Error getting CacheBuilder for " + name, e);
    }
    return b;
}

---

From source file:com.vsct.dt.hesperides.util.HesperidesCacheBuilder.java

/**
 * Create cache with easy setup.//from   w w  w .java 2  s  .  c  om
 *
 * @param config setup
 * @param weigher Guava weighter
 *
 * @return cache
 */
public static CacheBuilder<Object, Object> newBuilder(final HesperidesCacheParameter config,
        final Weigher<? extends Object, ? extends Object> weigher) {
    final CacheBuilder<Object, Object> cache = CacheBuilder.newBuilder();

    if (config != null) {
        final int maxSize = config.getMaxSize();
        final int weight = config.getWeight();
        final String expire = config.getItemExpireAfter();

        if (maxSize != HesperidesCacheParameter.NOT_SET) {
            cache.maximumSize(maxSize);
        }

        if (weight != HesperidesCacheParameter.NOT_SET) {
            if (weigher == null) {
                throw new IllegalArgumentException("Parameter 'weight' is not supported for this cache.");
            }

            cache.maximumWeight(weight);
        }

        if (expire != null) {
            final Pattern p = Pattern.compile("^([0-9]+)(m|s|h|d)");
            final Matcher m = p.matcher(expire);

            if (m.find()) {
                final int time = Integer.valueOf(m.group(1));
                TimeUnit unit = TimeUnit.SECONDS;

                switch (m.group(2)) {
                case "m":
                    unit = TimeUnit.MINUTES;
                    break;
                case "h":
                    unit = TimeUnit.HOURS;
                    break;
                case "d":
                    unit = TimeUnit.DAYS;
                    break;
                default:
                    // Nothing
                }

                cache.expireAfterWrite(time, unit);
                cache.expireAfterAccess(time, unit);
            } else {
                throw new IllegalArgumentException(
                        "Parameter 'itemExpireAfter' is not valid. Valid usage is [0-9]+(m|h|d|s). (Where 'm' is minutes, 'h' is hours, 'd' is days, 's' seconds.");
            }
        }
    }

    return cache;
}

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From source file:org.opendaylight.infrautils.caches.guava.internal.GuavaCacheProvider.java

private static <K, V> CacheBuilder<K, V> newCacheBuilder(BaseCacheConfig cacheConfig,
        CachePolicy initialPolicy) {// w w w .  j  a  va2  s . c om
    Objects.requireNonNull(cacheConfig, "cacheConfig");
    @SuppressWarnings("unchecked")
    // TODO support from(String) with CacheBuilderSpec for configuration from CachePolicy's extensions
    CacheBuilder<K, V> builder = (CacheBuilder<K, V>) CacheBuilder.newBuilder();
    // builder.concurrencyLevel(concurrencyLevel) <= this is a Guava specific setting, TBD String CacheBuilderSpec
    if (initialPolicy.statsEnabled()) {
        builder.recordStats();
    }

    long maxEntries = initialPolicy.maxEntries();
    if (maxEntries != CachePolicy.UNLIMITED_ENTRIES) {
        builder.maximumSize(maxEntries);
    }

    // TODO @see CachePolicy
    //   * TODO builder.concurrencyLevel(initialPolicy.?.concurrencyLevel);
    //   * TODO builder.initialCapacity(initialPolicy.?.initialCapacity)
    return builder;
}

---

From source file:com.sri.ai.expresso.core.DefaultSymbol.java

private static Cache<Object, Symbol> newSymbolTable() {
    CacheBuilder<Object, Object> cb = CacheBuilder.newBuilder();

    long maximumSize = ExpressoConfiguration.getGlobalSymbolTableMaximumSize();
    // Note: a maximumSize of 
    // < 0 means no size restrictions
    // = 0 means no cache
    // > 0 means maximum size of cache
    if (maximumSize >= 0L) {
        cb.maximumSize(maximumSize);
    }/*from   w  w w . j  a  v a2 s . c  o m*/
    if (AICUtilConfiguration.isRecordCacheStatistics()) {
        cb.recordStats();
    }

    Cache<Object, Symbol> result = cb.build();

    return result;
}

---

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);
    }//  w w w  .j  a va  2s  .c  o  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();
}

---

From source file:com.sri.ai.expresso.core.DefaultSyntaxLeaf.java

private static Cache<Object, SyntaxLeaf> newSymbolTable() {
    CacheBuilder<Object, Object> cb = CacheBuilder.newBuilder();

    long maximumSize = ExpressoConfiguration.getGlobalSymbolTableMaximumSize();
    // Note: a maximumSize of 
    // < 0 means no size restrictions
    // = 0 means no cache
    // > 0 means maximum size of cache
    if (maximumSize >= 0L) {
        cb.maximumSize(maximumSize);
    }//  ww w.  j a  v  a2  s  . c  o  m
    if (AICUtilConfiguration.isRecordCacheStatistics()) {
        cb.recordStats();
    }

    Cache<Object, SyntaxLeaf> result = cb.build();

    return result;
}

---

From source file:com.github.benmanes.caffeine.cache.testing.GuavaLocalCache.java

/** Returns a Guava-backed cache. */
@SuppressWarnings("CheckReturnValue")
public static <K, V> Cache<K, V> newGuavaCache(CacheContext context) {
    checkState(!context.isAsync(), "Guava caches are synchronous only");

    CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
    if (context.initialCapacity != InitialCapacity.DEFAULT) {
        builder.initialCapacity(context.initialCapacity.size());
    }//from w w w . jav a 2  s.c o  m
    if (context.isRecordingStats()) {
        builder.recordStats();
    }
    if (context.maximumSize != MaximumSize.DISABLED) {
        if (context.weigher == CacheWeigher.DEFAULT) {
            builder.maximumSize(context.maximumSize.max());
        } else {
            builder.weigher(new GuavaWeigher<Object, Object>(context.weigher));
            builder.maximumWeight(context.maximumWeight());
        }
    }
    if (context.afterAccess != Expire.DISABLED) {
        builder.expireAfterAccess(context.afterAccess.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.afterWrite != Expire.DISABLED) {
        builder.expireAfterWrite(context.afterWrite.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.refresh != Expire.DISABLED) {
        builder.refreshAfterWrite(context.refresh.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.expires() || context.refreshes()) {
        builder.ticker(context.ticker());
    }
    if (context.keyStrength == ReferenceType.WEAK) {
        builder.weakKeys();
    } else if (context.keyStrength == ReferenceType.SOFT) {
        throw new IllegalStateException();
    }
    if (context.valueStrength == ReferenceType.WEAK) {
        builder.weakValues();
    } else if (context.valueStrength == ReferenceType.SOFT) {
        builder.softValues();
    }
    if (context.removalListenerType != Listener.DEFAULT) {
        boolean translateZeroExpire = (context.afterAccess == Expire.IMMEDIATELY)
                || (context.afterWrite == Expire.IMMEDIATELY);
        builder.removalListener(new GuavaRemovalListener<>(translateZeroExpire, context.removalListener));
    }
    Ticker ticker = (context.ticker == null) ? Ticker.systemTicker() : context.ticker;
    if (context.loader == null) {
        context.cache = new GuavaCache<>(builder.<Integer, Integer>build(), ticker);
    } else if (context.loader().isBulk()) {
        context.cache = new GuavaLoadingCache<>(
                builder.build(new BulkLoader<Integer, Integer>(context.loader())), ticker);
    } else {
        context.cache = new GuavaLoadingCache<>(
                builder.build(new SingleLoader<Integer, Integer>(context.loader())), ticker);
    }
    @SuppressWarnings("unchecked")
    Cache<K, V> castedCache = (Cache<K, V>) context.cache;
    return castedCache;
}

---

From source file:com.github.benmanes.caffeine.cache.testing.GuavaCacheFromContext.java

/** Returns a Guava-backed cache. */
@SuppressWarnings("CheckReturnValue")
public static <K, V> Cache<K, V> newGuavaCache(CacheContext context) {
    checkState(!context.isAsync(), "Guava caches are synchronous only");

    CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
    context.guava = builder;// w w w  .  j  ava2s.c o  m

    builder.concurrencyLevel(1);
    if (context.initialCapacity != InitialCapacity.DEFAULT) {
        builder.initialCapacity(context.initialCapacity.size());
    }
    if (context.isRecordingStats()) {
        builder.recordStats();
    }
    if (context.maximumSize != Maximum.DISABLED) {
        if (context.weigher == CacheWeigher.DEFAULT) {
            builder.maximumSize(context.maximumSize.max());
        } else {
            builder.weigher(new GuavaWeigher<Object, Object>(context.weigher));
            builder.maximumWeight(context.maximumWeight());
        }
    }
    if (context.afterAccess != Expire.DISABLED) {
        builder.expireAfterAccess(context.afterAccess.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.afterWrite != Expire.DISABLED) {
        builder.expireAfterWrite(context.afterWrite.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.refresh != Expire.DISABLED) {
        builder.refreshAfterWrite(context.refresh.timeNanos(), TimeUnit.NANOSECONDS);
    }
    if (context.expires() || context.refreshes()) {
        builder.ticker(context.ticker());
    }
    if (context.keyStrength == ReferenceType.WEAK) {
        builder.weakKeys();
    } else if (context.keyStrength == ReferenceType.SOFT) {
        throw new IllegalStateException();
    }
    if (context.valueStrength == ReferenceType.WEAK) {
        builder.weakValues();
    } else if (context.valueStrength == ReferenceType.SOFT) {
        builder.softValues();
    }
    if (context.removalListenerType != Listener.DEFAULT) {
        boolean translateZeroExpire = (context.afterAccess == Expire.IMMEDIATELY)
                || (context.afterWrite == Expire.IMMEDIATELY);
        builder.removalListener(new GuavaRemovalListener<>(translateZeroExpire, context.removalListener));
    }
    Ticker ticker = (context.ticker == null) ? Ticker.systemTicker() : context.ticker;
    if (context.loader == null) {
        context.cache = new GuavaCache<>(builder.<Integer, Integer>build(), ticker, context.isRecordingStats());
    } else if (context.loader().isBulk()) {
        context.cache = new GuavaLoadingCache<>(
                builder.build(new BulkLoader<Integer, Integer>(context.loader())), ticker,
                context.isRecordingStats());
    } else {
        context.cache = new GuavaLoadingCache<>(
                builder.build(new SingleLoader<Integer, Integer>(context.loader())), ticker,
                context.isRecordingStats());
    }
    @SuppressWarnings("unchecked")
    Cache<K, V> castedCache = (Cache<K, V>) context.cache;
    return castedCache;
}

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