wangfukang
3 days ago
11 changed files with 391 additions and 29 deletions
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package cc.hiver.mall.utils; |
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import cc.hiver.core.common.redis.RedisTemplateHelper; |
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import cc.hiver.mall.entity.MallOrderGroup; |
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import cc.hiver.mall.pojo.vo.MallOrderVO; |
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import cn.hutool.json.JSONUtil; |
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import lombok.extern.slf4j.Slf4j; |
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import org.apache.commons.lang3.StringUtils; |
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import org.springframework.beans.factory.annotation.Autowired; |
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import org.springframework.stereotype.Component; |
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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.Map; |
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/** |
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* 商家待成团订单缓存工具类 |
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* <p> |
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* 底层使用 Redis Hash 结构，保证按 shopId + orderId 维度的 O(1) 读写效率。 |
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* <pre> |
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* Key = SHOP_GROUP_ORDERS:{shopId} |
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* Field = orderId |
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* Value = MallOrderGroup 的 JSON 序列化 |
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* </pre> |
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* <p> |
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* 使用场景：订单状态发生变化时（创建、更新、取消、完成等）， |
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* 由业务方主动调用本工具类的方法维护缓存，以减少 getMallOrderGroupByShopId 接口对数据库的查询压力。 |
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* |
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* @author system |
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*/ |
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@Slf4j |
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@Component |
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public class ShopGroupOrderCacheUtil { |
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/** Redis Key 前缀 */ |
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private static final String KEY_PREFIX = "SHOP_GROUP_ORDERS:"; |
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/** 订单不再属于"待成团"的状态集合 */ |
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private static final int STATUS_DONE = 0; |
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@Autowired |
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private RedisTemplateHelper redisTemplateHelper; |
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// ================================================================
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// Key 构建
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// ================================================================
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private String buildKey(String shopId) { |
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return KEY_PREFIX + shopId; |
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} |
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// ================================================================
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// 存放（put）
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// ================================================================
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/** |
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* 存放单个订单到缓存 |
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* |
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* @param shopId 店铺ID |
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* @param orderVO 订单VO（必须包含有效的 id） |
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*/ |
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public void put(String shopId, MallOrderGroup orderVO) { |
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if (StringUtils.isBlank(shopId) || orderVO == null || StringUtils.isBlank(orderVO.getId())) { |
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log.info("UserPendingOrderCacheUtil.put 参数无效, userId={}, orderVO={}", shopId, orderVO); |
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return; |
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} |
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try { |
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String key = buildKey(shopId); |
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String json = JSONUtil.toJsonStr(orderVO); |
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redisTemplateHelper.hPut(key, orderVO.getId(), json); |
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log.info("缓存店铺待成团订单: shopId={}, orderId={}", shopId, orderVO.getId()); |
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} catch (Exception e) { |
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log.info("缓存店铺待成团订单失败: shopId={}, orderId={}", shopId, orderVO.getId(), e); |
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} |
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} |
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/** |
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* 批量存放订单到缓存（通常用于缓存预热 / 首次加载） |
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* |
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* @param shopId 店铺ID |
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* @param orders 订单列表 |
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*/ |
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public void putAll(String shopId, List<MallOrderGroup> orders) { |
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if (StringUtils.isBlank(shopId) || orders == null || orders.isEmpty()) { |
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return; |
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} |
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try { |
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String key = buildKey(shopId); |
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Map<String, String> map = new java.util.LinkedHashMap<>(orders.size()); |
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for (MallOrderGroup order : orders) { |
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if (order != null && StringUtils.isNotBlank(order.getId())) { |
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map.put(order.getId(), JSONUtil.toJsonStr(order)); |
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} |
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} |
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if (!map.isEmpty()) { |
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redisTemplateHelper.hPutAll(key, map); |
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log.info("批量缓存店铺待成团订单: shopId={}, count={}", shopId, map.size()); |
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} |
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} catch (Exception e) { |
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log.info("批量缓存店铺待成团订单失败: shopId={}", shopId, e); |
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} |
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} |
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// ================================================================
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// 删除（remove）
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// ================================================================
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/** |
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* 根据 shopId 和 orderId 从缓存中删除指定订单 |
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* <p> |
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* 典型场景：订单成团、取消、退款成功后调用。 |
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* |
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* @param shopId 店铺ID |
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* @param orderId 订单ID |
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*/ |
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public void remove(String shopId, String orderId) { |
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if (StringUtils.isBlank(shopId) || StringUtils.isBlank(orderId)) { |
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log.info("UserPendingOrderCacheUtil.remove 参数无效, shopId={}, orderId={}", shopId, orderId); |
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return; |
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} |
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try { |
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String key = buildKey(shopId); |
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redisTemplateHelper.hDelete(key, orderId); |
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log.info("删除待成团订单缓存: shopId={}, orderId={}", shopId, orderId); |
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} catch (Exception e) { |
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log.info("删除待成团订单缓存失败: shopId={}, orderId={}", shopId, orderId, e); |
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} |
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} |
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/** |
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* 清除指定店铺所有待成团订单缓存 |
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* <p> |
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* 典型场景：需要强制刷新该店铺缓存时调用。 |
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* |
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* @param shopId 店铺ID |
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*/ |
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public void removeAll(String shopId) { |
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if (StringUtils.isBlank(shopId)) { |
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return; |
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} |
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try { |
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redisTemplateHelper.delete(buildKey(shopId)); |
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log.info("清除店铺待成团订单缓存: shopId={}", shopId); |
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} catch (Exception e) { |
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log.info("清除店铺待成团订单缓存失败: shopId={}", shopId, e); |
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} |
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} |
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// ================================================================
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// 更新（update）
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// ================================================================
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/** |
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* 根据 shopId 和 orderId 更新缓存中的订单信息 |
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* <p> |
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* 如果更新后的订单状态已经不属于"待完成"（status ∈ {10}）， |
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* 则自动从缓存中移除该订单，无需调用方额外判断。 |
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* |
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* @param shopId 店铺ID |
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* @param orderVO 更新后的订单VO |
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*/ |
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public void update(String shopId, MallOrderGroup orderVO) { |
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if (StringUtils.isBlank(shopId) || orderVO == null || StringUtils.isBlank(orderVO.getId())) { |
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log.warn("UserPendingOrderCacheUtil.update 参数无效, shopId={}, orderVO={}", shopId, orderVO); |
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return; |
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} |
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try { |
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// 如果订单状态已不属于待成团，直接删除
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/*if (!isTerminalStatus(orderVO.getStatus())) { |
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remove(shopId, orderVO.getId()); |
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log.debug("订单已终态，从缓存移除: shopId={}, orderId={}, status={}", |
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shopId, orderVO.getId(), orderVO.getStatus()); |
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return; |
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}*/ |
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// 覆盖更新
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put(shopId, orderVO); |
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log.info("更新店铺待成团缓存: shopId={}, orderId={}, status={}", |
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shopId, orderVO.getId(), orderVO.getStatus()); |
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} catch (Exception e) { |
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log.info("更新用户待完成订单缓存失败: shopId={}, orderId={}", shopId, orderVO.getId(), e); |
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} |
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} |
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// ================================================================
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// 查询（get）
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// ================================================================
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/** |
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* 获取店铺待成团订单缓存 |
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* |
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* @param shopId 店铺ID |
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* @return 缓存的订单列表，缓存不存在时返回 null（调用方可据此判断是否需要回源查库） |
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*/ |
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public List<MallOrderGroup> getAll(String shopId) { |
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if (StringUtils.isBlank(shopId)) { |
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return null; |
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} |
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try { |
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String key = buildKey(shopId); |
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Map<Object, Object> entries = redisTemplateHelper.hGetAll(key); |
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if (entries == null || entries.isEmpty()) { |
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return null; |
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} |
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List<MallOrderGroup> result = new ArrayList<>(entries.size()); |
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for (Object value : entries.values()) { |
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if (value != null) { |
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result.add(JSONUtil.toBean(value.toString(), MallOrderGroup.class)); |
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} |
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} |
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return result; |
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} catch (Exception e) { |
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log.info("获取店铺待成团订单缓存失败: shopId={}", shopId, e); |
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return null; |
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} |
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} |
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/** |
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* 获取店铺缓存待成团单个订单 |
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* |
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* @param shopId 店铺ID |
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* @param orderId 订单ID |
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* @return 缓存的订单VO，不存在时返回 null |
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*/ |
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public MallOrderVO get(String shopId, String orderId) { |
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if (StringUtils.isBlank(shopId) || StringUtils.isBlank(orderId)) { |
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return null; |
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} |
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try { |
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String key = buildKey(shopId); |
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Object value = redisTemplateHelper.hGet(key, orderId); |
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if (value == null) { |
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return null; |
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} |
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return JSONUtil.toBean(value.toString(), MallOrderVO.class); |
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} catch (Exception e) { |
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log.info("获取店铺单个待成团订单缓存失败: shopId={}, orderId={}", shopId, orderId, e); |
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return null; |
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} |
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} |
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/** |
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* 判断该店铺的缓存是否已存在 |
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* |
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* @param shopId 店铺ID |
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* @return true 表示缓存存在 |
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*/ |
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public boolean exists(String shopId) { |
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if (StringUtils.isBlank(shopId)) { |
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return false; |
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} |
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Boolean hasKey = redisTemplateHelper.hasKey(buildKey(shopId)); |
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return hasKey != null && hasKey; |
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} |
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// ================================================================
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// 内部工具
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// ================================================================
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/** |
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* 判断订单状态是否为终态（不再属于"待成团"） |
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*/ |
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private boolean isTerminalStatus(Integer status) { |
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if (status == null) { |
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return false; |
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} |
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return status == STATUS_DONE; |
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} |
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} |
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