1、减仓策略

2、减仓后减仓节点（60%）

services/binanceservice/reduce_order_strategy_service.go

@@ -0,0 +1,134 @@
+package binanceservice
+
+import (
+	"fmt"
+	"go-admin/app/admin/models"
+	"go-admin/app/admin/service/dto"
+	"go-admin/common/const/rediskey"
+	"go-admin/common/global"
+	"go-admin/common/helper"
+	models2 "go-admin/models"
+
+	"github.com/bytedance/sonic"
+	"github.com/go-admin-team/go-admin-core/logger"
+	"github.com/shopspring/decimal"
+	"gorm.io/gorm"
+)
+
+// 缓存减仓节点和重新生成
+// reduceOrder:原始减仓单
+// reduceOrderStrategy:减仓策略
+func CacheOrderStrategyAndReCreate(db *gorm.DB, reduceOrder ReduceListItem, symbolType int, tradeSet models2.TradeSet, setting models.LineSystemSetting) error {
+	reduceOrderStrategy := models.LineReduceStrategy{}
+	var key string
+
+	if symbolType == 1 {
+		key = fmt.Sprintf(rediskey.SpotOrderReduceStrategyList, global.EXCHANGE_BINANCE)
+	} else {
+		key = fmt.Sprintf(rediskey.FutOrderReduceStrategyList, global.EXCHANGE_BINANCE)
+	}
+
+	if err := db.Model(&reduceOrderStrategy).Where("order_id =?", reduceOrder.Id).Find(reduceOrderStrategy).Error; err != nil {
+		logger.Errorf("获取减仓策略失败,err:%v", err)
+		return err
+	}
+
+	if reduceOrderStrategy.Id > 0 {
+		strategyCache := dto.LineOrderReduceStrategyResp{
+			OrderId: reduceOrder.Id,
+		}
+
+		for _, item := range reduceOrderStrategy.Items {
+			var rate decimal.Decimal
+			var triggerRate decimal.Decimal
+
+			if reduceOrder.Side == "BUY" {
+				rate = (decimal.NewFromInt(100).Sub(item.LossPercent)).Div(decimal.NewFromInt(100))
+
+				if setting.ReduceEarlyTriggerPercent.Cmp(decimal.Zero) > 0 {
+					triggerRate = rate.Add(setting.ReduceEarlyTriggerPercent.Div(decimal.NewFromInt(100)))
+				} else {
+					triggerRate = rate
+				}
+			} else {
+				rate = (decimal.NewFromInt(100).Add(item.LossPercent)).Div(decimal.NewFromInt(100))
+
+				if setting.ReduceEarlyTriggerPercent.Cmp(decimal.Zero) > 0 {
+					triggerRate = rate.Sub(setting.ReduceEarlyTriggerPercent.Div(decimal.NewFromInt(100)))
+				} else {
+					triggerRate = rate
+				}
+			}
+			price := reduceOrder.Price.Mul(rate).Truncate(int32(tradeSet.PriceDigit))
+			triggerPrice := reduceOrder.Price.Mul(triggerRate).Truncate(int32(tradeSet.PriceDigit))
+
+			strategyCache.Items = append(strategyCache.Items, dto.LineOrderReduceStrategyRespItem{
+				LossPercent:  item.LossPercent,
+				OrderType:    item.OrderType,
+				Price:        price,
+				TriggerPrice: triggerPrice,
+			})
+		}
+
+		str, _ := sonic.MarshalString(reduceOrderStrategy)
+
+		if str != "" {
+			if err := helper.DefaultRedis.SetString(key, str); err != nil {
+				logger.Errorf("减仓单缓存减仓策略,err:%v", err)
+			}
+		}
+	}
+
+	return nil
+}
+
+// 根据订单id获取订单减仓策略
+func GetReduceStrategyById(db *gorm.DB, orderId int) (models.LineOrderReduceStrategy, error) {
+	result := models.LineOrderReduceStrategy{}
+
+	if err := db.Model(result).Where("order_id =?", orderId).Select("id", "order_id").First(&result).Error; err != nil {
+		return result, err
+	}
+
+	return result, nil
+}
+
+// 减仓单成功回调
+func ReduceCallBack(db *gorm.DB, preOrder *models.LinePreOrder) error {
+	reduceOrderId := preOrder.Id
+	var key string
+	if preOrder.ReduceOrderId > 0 {
+		reduceOrderId = preOrder.ReduceOrderId
+	}
+
+	switch preOrder.SymbolType {
+	case 1:
+		key = fmt.Sprintf(rediskey.SpotOrderReduceStrategyList, global.EXCHANGE_BINANCE)
+	case 2:
+		key = fmt.Sprintf(rediskey.FutOrderReduceStrategyList, global.EXCHANGE_BINANCE)
+	default:
+		return fmt.Errorf("交易对类型错误")
+	}
+
+	arrays, _ := helper.DefaultRedis.GetAllList(key)
+	cache := dto.LineOrderReduceStrategyResp{}
+
+	for _, v := range arrays {
+		sonic.Unmarshal([]byte(v), &cache)
+
+		if cache.OrderId == reduceOrderId {
+			if _, err := helper.DefaultRedis.LRem(key, v); err != nil {
+				logger.Errorf("移除减仓单减仓策略失败redis err:%v", err)
+			}
+		}
+	}
+
+	orderReduceStrategy, _ := GetReduceStrategyById(db, reduceOrderId)
+	if orderReduceStrategy.Id > 0 {
+		if err := db.Model(&orderReduceStrategy).Update("actived", 1).Error; err != nil {
+			logger.Errorf("更新减仓单减仓策略状态失败 order_id:%d err:%v", orderReduceStrategy.OrderId, err)
+		}
+	}
+
+	return nil
+}