/*
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* Copyright [2020-2030] [https://www.stylefeng.cn]
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Guns采用APACHE LICENSE 2.0开源协议，您在使用过程中，需要注意以下几点：
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*
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* 1.请不要删除和修改根目录下的LICENSE文件。
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* 2.请不要删除和修改Guns源码头部的版权声明。
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* 3.请保留源码和相关描述文件的项目出处，作者声明等。
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* 4.分发源码时候，请注明软件出处 https://gitee.com/stylefeng/guns
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* 5.在修改包名，模块名称，项目代码等时，请注明软件出处 https://gitee.com/stylefeng/guns
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* 6.若您的项目无法满足以上几点，可申请商业授权
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*/
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package cn.stylefeng.roses.kernel.cache.memory;
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import cn.hutool.cache.impl.CacheObj;
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import cn.hutool.cache.impl.TimedCache;
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import cn.hutool.core.collection.CollectionUtil;
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import cn.hutool.core.map.MapUtil;
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import cn.stylefeng.roses.kernel.cache.api.CacheOperatorApi;
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import java.util.*;
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/**
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* 基于内存的缓存封装
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*
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* @author stylefeng
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* @date 2020/7/9 10:09
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*/
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public abstract class AbstractMemoryCacheOperator<T> implements CacheOperatorApi<T> {
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private final TimedCache<String, T> timedCache;
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public AbstractMemoryCacheOperator(TimedCache<String, T> timedCache) {
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this.timedCache = timedCache;
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}
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@Override
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public void put(String key, T value) {
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timedCache.put(calcKey(key), value);
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}
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@Override
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public void put(String key, T value, Long timeoutSeconds) {
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timedCache.put(calcKey(key), value, timeoutSeconds * 1000);
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}
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@Override
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public T get(String key) {
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// 如果用户在超时前调用了get(key)方法，会重头计算起始时间，false的作用就是不从头算
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return timedCache.get(calcKey(key), true);
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}
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@Override
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public void remove(String... key) {
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if (key.length > 0) {
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for (String itemKey : key) {
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timedCache.remove(calcKey(itemKey));
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}
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}
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}
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@Override
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public void expire(String key, Long expiredSeconds) {
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T value = timedCache.get(calcKey(key), true);
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timedCache.put(calcKey(key), value, expiredSeconds * 1000);
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}
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@Override
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public boolean contains(String key) {
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return timedCache.containsKey(calcKey(key));
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}
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@Override
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public Collection<String> getAllKeys() {
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Iterator<CacheObj<String, T>> cacheObjIterator = timedCache.cacheObjIterator();
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ArrayList<String> keys = CollectionUtil.newArrayList();
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while (cacheObjIterator.hasNext()) {
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// 去掉缓存key的common prefix前缀
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String key = cacheObjIterator.next().getKey();
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keys.add(removePrefix(key));
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}
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return keys;
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}
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@Override
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public Collection<T> getAllValues() {
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Iterator<CacheObj<String, T>> cacheObjIterator = timedCache.cacheObjIterator();
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ArrayList<T> values = CollectionUtil.newArrayList();
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while (cacheObjIterator.hasNext()) {
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values.add(cacheObjIterator.next().getValue());
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}
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return values;
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}
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@Override
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public Map<String, T> getAllKeyValues() {
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Collection<String> allKeys = this.getAllKeys();
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HashMap<String, T> results = MapUtil.newHashMap();
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for (String key : allKeys) {
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results.put(key, this.get(key));
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}
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return results;
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}
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}
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