feat: stock

app/Service/Api/Order/PlaceOrderService.php

@@ -33,6 +33,11 @@ class PlaceOrderService extends BaseOrderService
         $this->isAutoSelectCoupon = 2;
     }
 
+    /**
+     * @var array
+     */
+    private array $rollbackStockCache = [];
+
 
     /**
      * 统一下单逻辑
@@ -45,12 +50,16 @@ class PlaceOrderService extends BaseOrderService
         $this->siteId = (int)$this->request->input('site_id');
         $this->couponId = (int)$this->request->input('coupon_id',0);
 
+        // 生成购物车信息 ， 检测商品和库存等
         $this->check();
 
+        // 计算
         $this->compute();
 
+        // 下单 减少库存 写入数据库
         $this->placeOrder();
 
+        // 加入取消延迟队列
         $this->joinCancelDelayQueue();
 
         return $this->return->success('success',$this->orderRes);
@@ -73,22 +82,61 @@ class PlaceOrderService extends BaseOrderService
         $producer->produce($message);
     }
 
+    /**
+     * @return void
+     * @throws ContainerExceptionInterface
+     * @throws NotFoundExceptionInterface
+     * @throws Exception
+     */
+    private function reduceStock(): void
+    {
+        $this->rollbackStockCache = [];
+
+        foreach ($this->cartFirstData as $goodId => $stock) {
+            $this->rollbackStockCache[$goodId] = $stock;
+            if (!($this->redis->zAdd($this->stockKey,'-'.$stock,$goodId))) {
+                throw new Exception('cache error');
+            }
+        }
+    }
+
+    /**
+     * @return void
+     * @throws ContainerExceptionInterface
+     * @throws NotFoundExceptionInterface
+     */
+    private function rollbackStock(): void
+    {
+        if (empty($this->rollbackStockCache)) return;
+
+        foreach ($this->rollbackStockCache as $goodId => $stock) {
+            $this->redis->zAdd($this->stockKey,$stock,$goodId);
+        }
+    }
+
     /**
      * 下单
      * @return void
+     * @throws ContainerExceptionInterface
+     * @throws NotFoundExceptionInterface
      */
     private function placeOrder(): void
     {
         try {
             Db::beginTransaction();
 
+            $this->reduceStock();
+
             $this->insertOrder();
 
             $this->insertOrderGoods();
 
             Db::commit();
         } catch (Exception $e){
+            //回滚数据库 和 缓存
             Db::rollBack();
+            $this->rollbackStock();
+            //意外抛出
             throw new ErrException($e->getMessage());
         }
     }