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package com.qingzhuge.framework.cache.lettuce;

import com.qingzhuge.framework.base.cache.support.CacheObject;
import com.qingzhuge.framework.cache.Cache;
import com.qingzhuge.framework.cache.CacheChannel;
import com.qingzhuge.framework.cache.CacheExpiredListener;
import com.qingzhuge.framework.cache.Level2Cache;
import com.qingzhuge.framework.cache.autoconfigure.J2CacheProperties;
import com.qingzhuge.framework.cache.provider.CacheProvider;
import org.springframework.data.redis.core.RedisTemplate;

import javax.annotation.Resource;
import java.io.Serializable;
import java.util.Collection;
import java.util.Collections;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author : zero.xiao
 * datetime :2018-06-03 20:45
 * 二级缓存，使用 Lettuce 进行 Redis 的操作
 */
public class LettuceProvider implements CacheProvider {

    @Resource
    private RedisTemplate redisTemplate;

    private String namespace;

    private final ConcurrentHashMap regions = new ConcurrentHashMap<>();

    @Override
    public String name() {
        return "lettuce";
    }

    @Override
    public int level() {
        return CacheObject.LEVEL_2;
    }

    @Override
    public Cache buildCache(String region, CacheExpiredListener listener) {
        return regions.computeIfAbsent(this.namespace + ":" + region, v -> new LettuceCache(this.namespace, region, redisTemplate));
    }

    @Override
    public Cache buildCache(String region, long timeToLiveInSeconds, CacheExpiredListener listener) {
        return buildCache(region, listener);
    }

    @Override
    public void start(J2CacheProperties config) {
        this.namespace = config.getNamespace();
    }

    @Override
    public void stop() {
        regions.clear();
    }


    @Override
    public Collection regions() {
        return Collections.emptyList();
    }
}