/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2015 bboyfeiyu@gmail.com, Inc
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package org.simple.net.cache;

import android.support.v4.util.LruCache;

import org.simple.net.base.Response;

/**
 * 将请求结果缓存到内存中
 * 
 * @author mrsimple
 */
public class LruMemCache implements Cache<String, Response> {

    /**
     * Reponse缓存
     */
    private LruCache<String, Response> mResponseCache;

    public LruMemCache() {
        // 计算可使用的最大内存
        final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);

        // 取八分之一的可用内存作为缓存
        final int cacheSize = maxMemory / 8;
        mResponseCache = new LruCache<String, Response>(cacheSize) {

            @Override
            protected int sizeOf(String key, Response response) {
                return response.rawData.length / 1024;
            }
        };

    }

    @Override
    public Response get(String key) {
        return mResponseCache.get(key);
    }

    @Override
    public void put(String key, Response response) {
        mResponseCache.put(key, response);
    }

    @Override
    public void remove(String key) {
        mResponseCache.remove(key);
    }
}
