/*
 * FileName：CacheUtils.java
 * <p>
 * Copyright (c) 2017-2020 <a href="https://www.smartwx.info">hermit(1154808491@qq.com)</a>.
 * <p>
 * Licensed under the GNU General Public License, Version 3 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.gnu.org/licenses/gpl-3.0.html
 * <p>
 * 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 io.renren.util;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

import java.util.concurrent.TimeUnit;

/**
 */
@Component
public class CacheUtils {

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 给一个指定的 key 值附加过期时间
     *
     * @param key
     * @param time
     * @return
     */
    public boolean expire(String key, long time) {
        return redisTemplate.expire(key, time, TimeUnit.SECONDS);
    }

    /**
     * 获取缓存
     *
     * @param key
     * @return
     */
    public Object get(String key) {
        return key == null ? null : redisTemplate.opsForValue().get(key);
    }

    /**
     * 写入缓存
     *
     * @param key
     * @return
     */
    public void set(String key, String value) {
        redisTemplate.opsForValue().set(key, value);
    }

    /**
     * 写入缓存
     *
     * @param key
     * @return
     */
    public void set(String key, String value, Long expires) {
        redisTemplate.opsForValue().set(key, value, expires, TimeUnit.SECONDS);
    }

    /**
     * 从缓存中移除
     *
     * @param key
     * @return
     */
    public Boolean remove(String key) {
        return redisTemplate.delete(key);
    }

}
