com.glaf.core.cache.guava.GuavaCache.java Source code

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Here is the source code for com.glaf.core.cache.guava.GuavaCache.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.glaf.core.cache.guava;

import java.util.concurrent.TimeUnit;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;

public class GuavaCache implements com.glaf.core.cache.Cache {
    protected static final Log logger = LogFactory.getLog(GuavaCache.class);

    protected Cache<Object, Object> cache;

    protected int cacheSize = 1000000;

    protected int expireMinutes = 30;

    public GuavaCache() {

    }

    public Cache<Object, Object> getCache() {
        if (cache == null) {
            cache = CacheBuilder.newBuilder().maximumSize(getCacheSize())
                    .expireAfterAccess(getExpireMinutes(), TimeUnit.MINUTES).build();
        }
        return cache;
    }

    public int getCacheSize() {
        return cacheSize;
    }

    public void setCacheSize(int cacheSize) {
        this.cacheSize = cacheSize;
    }

    public int getExpireMinutes() {
        return expireMinutes;
    }

    public void setExpireMinutes(int expireMinutes) {
        this.expireMinutes = expireMinutes;
    }

    public Object get(String key) {
        Object value = getCache().getIfPresent(key);
        if (value != null) {
            // logger.debug("get object from guava cache.");
        }
        return value;
    }

    public void put(String key, Object value) {
        getCache().put(key, value);
    }

    public void remove(String key) {
        getCache().invalidate(key);
    }

    public void clear() {
        getCache().invalidateAll();
        getCache().cleanUp();
    }

    public void shutdown() {
        getCache().invalidateAll();
        getCache().cleanUp();
    }
}