com.github.benmanes.caffeine.cache.impl.GuavaCache.java Source code

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Here is the source code for com.github.benmanes.caffeine.cache.impl.GuavaCache.java

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/*
 * Copyright 2015 Ben Manes. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.benmanes.caffeine.cache.impl;

import static com.github.benmanes.caffeine.cache.CacheType.CONCURRENCY_LEVEL;
import static java.util.Objects.requireNonNull;

import com.github.benmanes.caffeine.cache.BasicCache;
import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;

/**
 * @author ben.manes@gmail.com (Ben Manes)
 */
public final class GuavaCache<K, V> implements BasicCache<K, V> {
    private final Cache<K, V> cache;

    public GuavaCache(int maximumSize) {
        cache = CacheBuilder.newBuilder().concurrencyLevel(CONCURRENCY_LEVEL).initialCapacity(maximumSize)
                .maximumSize(maximumSize).build();
    }

    public GuavaCache(Cache<K, V> cache) {
        this.cache = requireNonNull(cache);
    }

    @Override
    public V get(K key) {
        return cache.getIfPresent(key);
    }

    @Override
    public void put(K key, V value) {
        cache.put(key, value);
    }

    @Override
    public void clear() {
        cache.invalidateAll();
    }

    @Override
    public void cleanUp() {
        cache.cleanUp();
    }
}