Merge pull request 'issue_39' (#40) from issue_39 into main

Reviewed-on: #40

docs/docs.go

@@ -4770,6 +4770,9 @@ const docTemplate = `{
                 "capacity": {
                     "type": "integer"
                 },
+                "current_pig_count": {
+                    "type": "integer"
+                },
                 "house_id": {
                     "type": "integer"
                 },
@@ -4903,6 +4906,14 @@ const docTemplate = `{
                     "description": "创建时间",
                     "type": "string"
                 },
+                "currentTotalPigsInPens": {
+                    "description": "当前存栏总数",
+                    "type": "integer"
+                },
+                "currentTotalQuantity": {
+                    "description": "当前总数",
+                    "type": "integer"
+                },
                 "end_date": {
                     "description": "批次结束日期",
                     "type": "string"

docs/swagger.json

@@ -4762,6 +4762,9 @@
                 "capacity": {
                     "type": "integer"
                 },
+                "current_pig_count": {
+                    "type": "integer"
+                },
                 "house_id": {
                     "type": "integer"
                 },
@@ -4895,6 +4898,14 @@
                     "description": "创建时间",
                     "type": "string"
                 },
+                "currentTotalPigsInPens": {
+                    "description": "当前存栏总数",
+                    "type": "integer"
+                },
+                "currentTotalQuantity": {
+                    "description": "当前总数",
+                    "type": "integer"
+                },
                 "end_date": {
                     "description": "批次结束日期",
                     "type": "string"

docs/swagger.yaml

@@ -572,6 +572,8 @@ definitions:
     properties:
       capacity:
         type: integer
+      current_pig_count:
+        type: integer
       house_id:
         type: integer
       id:
@@ -660,6 +662,12 @@ definitions:
       create_time:
         description: 创建时间
         type: string
+      currentTotalPigsInPens:
+        description: 当前存栏总数
+        type: integer
+      currentTotalQuantity:
+        description: 当前总数
+        type: integer
       end_date:
         description: 批次结束日期
         type: string

internal/app/api/router.go

@@ -140,7 +140,7 @@ func (a *API) setupRoutes() {
 			pigBatchGroup.DELETE("/:id", a.pigBatchController.DeletePigBatch)                                             // 删除猪群
 			pigBatchGroup.POST("/assign-pens/:id", a.pigBatchController.AssignEmptyPensToBatch)                           // 为猪群分配空栏
 			pigBatchGroup.POST("/reclassify-pen/:fromBatchID", a.pigBatchController.ReclassifyPenToNewBatch)              // 将猪栏划拨到新群
-			penGroup.DELETE("/remove-pen/:penID/:batchID", a.pigBatchController.RemoveEmptyPenFromBatch)                  // 从猪群移除空栏
+			pigBatchGroup.DELETE("/remove-pen/:penID/:batchID", a.pigBatchController.RemoveEmptyPenFromBatch)             // 从猪群移除空栏
 			pigBatchGroup.POST("/move-pigs-into-pen/:id", a.pigBatchController.MovePigsIntoPen)                           // 将猪只从“虚拟库存”移入指定猪栏
 			pigBatchGroup.POST("/sell-pigs/:id", a.pigBatchController.SellPigs)                                           // 处理卖猪业务
 			pigBatchGroup.POST("/buy-pigs/:id", a.pigBatchController.BuyPigs)                                             // 处理买猪业务

internal/app/controller/management/controller_helpers.go

@@ -2,6 +2,7 @@ package management
 
 import (
 	"errors"
+	"fmt"
 	"strconv"
 
 	"git.huangwc.com/pig/pig-farm-controller/internal/app/controller"
@@ -25,7 +26,7 @@ func mapAndSendError(c *PigBatchController, ctx *gin.Context, action string, err
 		controller.SendErrorWithAudit(ctx, controller.CodeConflict, err.Error(), action, err.Error(), id)
 	} else {
 		c.logger.Errorf("操作[%s]业务逻辑失败: %v", action, err)
-		controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "操作失败", action, err.Error(), id)
+		controller.SendErrorWithAudit(ctx, controller.CodeInternalError, fmt.Sprintf("操作失败: %v", err), action, err.Error(), id)
 	}
 }
 
@@ -156,7 +157,7 @@ func handleAPIRequestWithResponse[Req any, Resp any](
 ) {
 	// 1. 绑定请求体
 	if err := ctx.ShouldBindJSON(&reqDTO); err != nil {
-		controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的请求体", action, "请求体绑定失败", reqDTO)
+		controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, fmt.Sprintf("无效的请求体: %v", err), action, fmt.Sprintf("请求体绑定失败: %v", err), reqDTO)
 		return
 	}
 

internal/app/controller/management/feed_controller.go

@@ -1 +0,0 @@
-package management

internal/app/controller/management/medication_controller.go

@@ -1 +0,0 @@
-package management

internal/app/controller/management/pig_controller.go

@@ -1 +0,0 @@
-package management

internal/app/controller/management/pig_farm_controller.go

@@ -276,17 +276,7 @@ func (c *PigFarmController) GetPen(ctx *gin.Context) {
 		return
 	}
 
-	resp := dto.PenResponse{
+	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取成功", pen, action, "获取成功", pen)
-		ID:        pen.ID,
-		PenNumber: pen.PenNumber,
-		HouseID:   pen.HouseID,
-		Capacity:  pen.Capacity,
-		Status:    pen.Status,
-	}
-	if pen.PigBatchID != nil {
-		resp.PigBatchID = *pen.PigBatchID
-	}
-	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取成功", resp, action, "获取成功", resp)
 }
 
 // ListPens godoc
@@ -306,22 +296,7 @@ func (c *PigFarmController) ListPens(ctx *gin.Context) {
 		return
 	}
 
-	var resp []dto.PenResponse
+	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取成功", pens, action, "获取成功", pens)
-	for _, pen := range pens {
-		res := dto.PenResponse{
-			ID:        pen.ID,
-			PenNumber: pen.PenNumber,
-			HouseID:   pen.HouseID,
-			Capacity:  pen.Capacity,
-			Status:    pen.Status,
-		}
-		if pen.PigBatchID != nil {
-			res.PigBatchID = *pen.PigBatchID
-		}
-		resp = append(resp, res)
-	}
-
-	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取成功", resp, action, "获取成功", resp)
 }
 
 // UpdatePen godoc
@@ -367,9 +342,7 @@ func (c *PigFarmController) UpdatePen(ctx *gin.Context) {
 		HouseID:    pen.HouseID,
 		Capacity:   pen.Capacity,
 		Status:     pen.Status,
-	}
+		PigBatchID: pen.PigBatchID,
-	if pen.PigBatchID != nil {
-		resp.PigBatchID = *pen.PigBatchID
 	}
 	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "更新成功", resp, action, "更新成功", resp)
 }
@@ -454,7 +427,7 @@ func (c *PigFarmController) UpdatePenStatus(ctx *gin.Context) {
 		HouseID:    pen.HouseID,
 		Capacity:   pen.Capacity,
 		Status:     pen.Status,
-		PigBatchID: *pen.PigBatchID,
+		PigBatchID: pen.PigBatchID,
 	}
 	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "更新成功", resp, action, "更新成功", resp)
 }

internal/app/dto/pig_batch_dto.go

@@ -40,6 +40,8 @@ type PigBatchResponseDTO struct {
 	InitialCount           int                       `json:"initial_count"`          // 初始数量
 	Status                 models.PigBatchStatus     `json:"status"`                 // 批次状态
 	IsActive               bool                      `json:"is_active"`              // 是否活跃
+	CurrentTotalQuantity   int                       `json:"currentTotalQuantity"`   // 当前总数
+	CurrentTotalPigsInPens int                       `json:"currentTotalPigsInPens"` // 当前存栏总数
 	CreateTime             time.Time                 `json:"create_time"`            // 创建时间
 	UpdateTime             time.Time                 `json:"update_time"`            // 更新时间
 }

internal/app/dto/pig_farm_dto.go

@@ -16,7 +16,8 @@ type PenResponse struct {
 	HouseID         uint             `json:"house_id"`
 	Capacity        int              `json:"capacity"`
 	Status          models.PenStatus `json:"status"`
-	PigBatchID uint             `json:"pig_batch_id"`
+	PigBatchID      *uint            `json:"pig_batch_id,omitempty"`
+	CurrentPigCount int              `json:"current_pig_count"`
 }
 
 // CreatePigHouseRequest 定义了创建猪舍的请求结构

internal/app/service/pig_batch_service.go

@@ -57,7 +57,7 @@ func NewPigBatchService(domainService domain_pig.PigBatchService, logger *logs.L
 }
 
 // toPigBatchResponseDTO 负责将领域模型转换为应用层DTO，这个职责保留在应用层。
-func (s *pigBatchService) toPigBatchResponseDTO(batch *models.PigBatch) *dto.PigBatchResponseDTO {
+func (s *pigBatchService) toPigBatchResponseDTO(batch *models.PigBatch, currentTotalQuantity, currentTotalPigsInPens int) *dto.PigBatchResponseDTO {
 	if batch == nil {
 		return nil
 	}
@@ -70,6 +70,8 @@ func (s *pigBatchService) toPigBatchResponseDTO(batch *models.PigBatch) *dto.Pig
 		InitialCount:           batch.InitialCount,
 		Status:                 batch.Status,
 		IsActive:               batch.IsActive(),
+		CurrentTotalQuantity:   currentTotalQuantity,
+		CurrentTotalPigsInPens: currentTotalPigsInPens,
 		CreateTime:             batch.CreatedAt,
 		UpdateTime:             batch.UpdatedAt,
 	}
@@ -94,7 +96,7 @@ func (s *pigBatchService) CreatePigBatch(operatorID uint, dto *dto.PigBatchCreat
 	}
 
 	// 3. 领域模型 -> DTO
-	return s.toPigBatchResponseDTO(createdBatch), nil
+	return s.toPigBatchResponseDTO(createdBatch, dto.InitialCount, 0), nil
 }
 
 // GetPigBatch 从领域服务获取数据并转换为DTO，同时处理错误转换。
@@ -104,8 +106,17 @@ func (s *pigBatchService) GetPigBatch(id uint) (*dto.PigBatchResponseDTO, error)
 		s.logger.Warnf("应用层: 获取猪批次失败, ID: %d, 错误: %v", id, err)
 		return nil, MapDomainError(err)
 	}
-
+	currentTotalQuantity, err := s.domainService.GetCurrentPigQuantity(id)
-	return s.toPigBatchResponseDTO(batch), nil
+	if err != nil {
+		s.logger.Warnf("应用层: 获取猪批次总数失败, ID: %d, 错误: %v", id, err)
+		return nil, MapDomainError(err)
+	}
+	currentTotalPigsInPens, err := s.domainService.GetTotalPigsInPensForBatch(id)
+	if err != nil {
+		s.logger.Warnf("应用层: 获取猪批次存栏总数失败, ID: %d, 错误: %v", id, err)
+		return nil, MapDomainError(err)
+	}
+	return s.toPigBatchResponseDTO(batch, currentTotalQuantity, currentTotalPigsInPens), nil
 }
 
 // UpdatePigBatch 协调获取、更新和保存的流程，并处理错误转换。
@@ -144,8 +155,20 @@ func (s *pigBatchService) UpdatePigBatch(id uint, dto *dto.PigBatchUpdateDTO) (*
 		return nil, MapDomainError(err)
 	}
 
-	// 4. 转换并返回结果
+	// 4. 填充猪群信息
-	return s.toPigBatchResponseDTO(updatedBatch), nil
+	currentTotalQuantity, err := s.domainService.GetCurrentPigQuantity(id)
+	if err != nil {
+		s.logger.Warnf("应用层: 获取猪批次总数失败, ID: %d, 错误: %v", id, err)
+		return nil, MapDomainError(err)
+	}
+	currentTotalPigsInPens, err := s.domainService.GetTotalPigsInPensForBatch(id)
+	if err != nil {
+		s.logger.Warnf("应用层: 获取猪批次存栏总数失败, ID: %d, 错误: %v", id, err)
+		return nil, MapDomainError(err)
+	}
+
+	// 5. 转换并返回结果
+	return s.toPigBatchResponseDTO(updatedBatch, currentTotalQuantity, currentTotalPigsInPens), nil
 }
 
 // DeletePigBatch 将删除操作委托给领域服务，并转换领域错误为应用层错误。
@@ -168,7 +191,17 @@ func (s *pigBatchService) ListPigBatches(isActive *bool) ([]*dto.PigBatchRespons
 
 	var responseDTOs []*dto.PigBatchResponseDTO
 	for _, batch := range batches {
-		responseDTOs = append(responseDTOs, s.toPigBatchResponseDTO(batch))
+		currentTotalQuantity, err := s.domainService.GetCurrentPigQuantity(batch.ID)
+		if err != nil {
+			s.logger.Warnf("应用层: 获取猪批次总数失败, ID: %d, 错误: %v", batch.ID, err)
+			return nil, MapDomainError(err)
+		}
+		currentTotalPigsInPens, err := s.domainService.GetTotalPigsInPensForBatch(batch.ID)
+		if err != nil {
+			s.logger.Warnf("应用层: 获取猪批次存栏总数失败, ID: %d, 错误: %v", batch.ID, err)
+			return nil, MapDomainError(err)
+		}
+		responseDTOs = append(responseDTOs, s.toPigBatchResponseDTO(batch, currentTotalQuantity, currentTotalPigsInPens))
 	}
 
 	return responseDTOs, nil

internal/app/service/pig_farm_service.go

@@ -4,6 +4,8 @@ import (
 	"errors"
 	"fmt"
 
+	"git.huangwc.com/pig/pig-farm-controller/internal/app/dto"
+	domain_pig "git.huangwc.com/pig/pig-farm-controller/internal/domain/pig"
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/logs"
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/models"
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/repository"
@@ -22,8 +24,8 @@ type PigFarmService interface {
 
 	// Pen methods
 	CreatePen(penNumber string, houseID uint, capacity int) (*models.Pen, error)
-	GetPenByID(id uint) (*models.Pen, error)
+	GetPenByID(id uint) (*dto.PenResponse, error)
-	ListPens() ([]models.Pen, error)
+	ListPens() ([]*dto.PenResponse, error)
 	UpdatePen(id uint, penNumber string, houseID uint, capacity int, status models.PenStatus) (*models.Pen, error)
 	DeletePen(id uint) error
 	// UpdatePenStatus 更新猪栏状态
@@ -35,6 +37,7 @@ type pigFarmService struct {
 	farmRepository  repository.PigFarmRepository
 	penRepository   repository.PigPenRepository
 	batchRepository repository.PigBatchRepository
+	pigBatchService domain_pig.PigBatchService // Add domain PigBatchService dependency
 	uow             repository.UnitOfWork      // 工作单元，用于事务管理
 }
 
@@ -42,6 +45,7 @@ type pigFarmService struct {
 func NewPigFarmService(farmRepository repository.PigFarmRepository,
 	penRepository repository.PigPenRepository,
 	batchRepository repository.PigBatchRepository,
+	pigBatchService domain_pig.PigBatchService,
 	uow repository.UnitOfWork,
 	logger *logs.Logger) PigFarmService {
 	return &pigFarmService{
@@ -49,6 +53,7 @@ func NewPigFarmService(farmRepository repository.PigFarmRepository,
 		farmRepository:  farmRepository,
 		penRepository:   penRepository,
 		batchRepository: batchRepository,
+		pigBatchService: pigBatchService,
 		uow:             uow,
 	}
 }
@@ -132,12 +137,64 @@ func (s *pigFarmService) CreatePen(penNumber string, houseID uint, capacity int)
 	return pen, err
 }
 
-func (s *pigFarmService) GetPenByID(id uint) (*models.Pen, error) {
+func (s *pigFarmService) GetPenByID(id uint) (*dto.PenResponse, error) {
-	return s.penRepository.GetPenByID(id)
+	pen, err := s.penRepository.GetPenByID(id)
+	if err != nil {
+		return nil, err
+	}
+
+	currentPigCount, err := s.pigBatchService.GetCurrentPigsInPen(id)
+	if err != nil {
+		s.logger.Errorf("获取猪栏 %d 存栏量失败: %v", id, err)
+		currentPigCount = 0 // 如果获取计数时出错，则默认为0
+	}
+
+	response := &dto.PenResponse{
+		ID:              pen.ID,
+		PenNumber:       pen.PenNumber,
+		HouseID:         pen.HouseID,
+		Capacity:        pen.Capacity,
+		Status:          pen.Status,
+		CurrentPigCount: currentPigCount,
+	}
+
+	if pen.PigBatchID != nil {
+		response.PigBatchID = pen.PigBatchID
+	}
+
+	return response, nil
 }
 
-func (s *pigFarmService) ListPens() ([]models.Pen, error) {
+func (s *pigFarmService) ListPens() ([]*dto.PenResponse, error) {
-	return s.penRepository.ListPens()
+	pens, err := s.penRepository.ListPens()
+	if err != nil {
+		return nil, err
+	}
+
+	var response []*dto.PenResponse
+	for _, pen := range pens {
+		currentPigCount, err := s.pigBatchService.GetCurrentPigsInPen(pen.ID)
+		if err != nil {
+			s.logger.Errorf("获取猪栏 %d 存栏量失败: %v", pen.ID, err)
+			currentPigCount = 0 // 如果获取计数时出错，则默认为0
+		}
+
+		penResponse := &dto.PenResponse{
+			ID:              pen.ID,
+			PenNumber:       pen.PenNumber,
+			HouseID:         pen.HouseID,
+			Capacity:        pen.Capacity,
+			Status:          pen.Status,
+			CurrentPigCount: currentPigCount,
+		}
+
+		if pen.PigBatchID != nil {
+			penResponse.PigBatchID = pen.PigBatchID
+		}
+		response = append(response, penResponse)
+	}
+
+	return response, nil
 }
 
 func (s *pigFarmService) UpdatePen(id uint, penNumber string, houseID uint, capacity int, status models.PenStatus) (*models.Pen, error) {

internal/core/application.go

@@ -97,7 +97,7 @@ func NewApplication(configPath string) (*Application, error) {
 		pigPenTransferManager, pigTradeManager, pigSickManager)
 
 	// --- 业务逻辑处理器初始化 ---
-	pigFarmService := service.NewPigFarmService(pigFarmRepo, pigPenRepo, pigBatchRepo, unitOfWork, logger)
+	pigFarmService := service.NewPigFarmService(pigFarmRepo, pigPenRepo, pigBatchRepo, pigBatchDomain, unitOfWork, logger)
 	pigBatchService := service.NewPigBatchService(pigBatchDomain, logger)
 	monitorService := service.NewMonitorService(
 		sensorDataRepo,

internal/domain/pig/pig_batch_service.go

@@ -6,7 +6,6 @@ import (
 
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/models"
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/repository"
-	"gorm.io/gorm"
 )
 
 // --- 业务错误定义 ---
@@ -58,6 +57,10 @@ type PigBatchService interface {
 
 	// GetCurrentPigQuantity 获取指定猪批次的当前猪只数量。
 	GetCurrentPigQuantity(batchID uint) (int, error)
+	// GetCurrentPigsInPen 获取指定猪栏的当前存栏量。
+	GetCurrentPigsInPen(penID uint) (int, error)
+	// GetTotalPigsInPensForBatch 获取指定猪群下所有猪栏的当前总存栏数
+	GetTotalPigsInPensForBatch(batchID uint) (int, error)
 
 	UpdatePigBatchQuantity(operatorID uint, batchID uint, changeType models.LogChangeType, changeAmount int, changeReason string, happenedAt time.Time) error
 
@@ -118,48 +121,3 @@ func NewPigBatchService(
 		sickSvc:         sickSvc,
 	}
 }
-
-func (s *pigBatchService) RemoveEmptyPenFromBatch(batchID uint, penID uint) error {
-	return s.uow.ExecuteInTransaction(func(tx *gorm.DB) error {
-		// 1. 检查猪批次是否存在且活跃
-		batch, err := s.pigBatchRepo.GetPigBatchByIDTx(tx, batchID)
-		if err != nil {
-			if errors.Is(err, gorm.ErrRecordNotFound) {
-				return ErrPigBatchNotFound
-			}
-			return err
-		}
-		if !batch.IsActive() {
-			return ErrPigBatchNotActive
-		}
-
-		// 2. 检查猪栏是否存在
-		pen, err := s.transferSvc.GetPenByID(tx, penID)
-		if err != nil {
-			if errors.Is(err, gorm.ErrRecordNotFound) {
-				return ErrPenNotFound
-			}
-			return err
-		}
-
-		// 3. 检查猪栏是否与当前批次关联
-		if pen.PigBatchID == nil || *pen.PigBatchID != batchID {
-			return ErrPenNotAssociatedWithBatch
-		}
-
-		// 4. 检查猪栏是否为空
-		pigsInPen, err := s.transferSvc.GetCurrentPigsInPen(tx, penID)
-		if err != nil {
-			return err
-		}
-		if pigsInPen > 0 {
-			return ErrPenNotEmpty
-		}
-
-		// 5. 释放猪栏 (将 pig_batch_id 设置为 nil，状态设置为空闲)
-		if err := s.transferSvc.ReleasePen(tx, penID); err != nil {
-			return err
-		}
-		return nil
-	})
-}

internal/domain/pig/pig_batch_service_pen_transfer.go

@@ -381,3 +381,75 @@ func (s *pigBatchService) ReclassifyPenToNewBatch(fromBatchID uint, toBatchID ui
 		return nil
 	})
 }
+
+func (s *pigBatchService) RemoveEmptyPenFromBatch(batchID uint, penID uint) error {
+	return s.uow.ExecuteInTransaction(func(tx *gorm.DB) error {
+		// 1. 检查猪批次是否存在且活跃
+		batch, err := s.pigBatchRepo.GetPigBatchByIDTx(tx, batchID)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrPigBatchNotFound
+			}
+			return err
+		}
+		if !batch.IsActive() {
+			return ErrPigBatchNotActive
+		}
+
+		// 2. 检查猪栏是否存在
+		pen, err := s.transferSvc.GetPenByID(tx, penID)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrPenNotFound
+			}
+			return err
+		}
+
+		// 3. 检查猪栏是否与当前批次关联
+		if pen.PigBatchID == nil || *pen.PigBatchID != batchID {
+			return ErrPenNotAssociatedWithBatch
+		}
+
+		// 4. 检查猪栏是否为空
+		pigsInPen, err := s.transferSvc.GetCurrentPigsInPen(tx, penID)
+		if err != nil {
+			return err
+		}
+		if pigsInPen > 0 {
+			return ErrPenNotEmpty
+		}
+
+		// 5. 释放猪栏 (将 pig_batch_id 设置为 nil，状态设置为空闲)
+		if err := s.transferSvc.ReleasePen(tx, penID); err != nil {
+			return err
+		}
+		return nil
+	})
+}
+
+func (s *pigBatchService) GetCurrentPigsInPen(penID uint) (int, error) {
+	var currentPigs int
+	err := s.uow.ExecuteInTransaction(func(tx *gorm.DB) error {
+		pigs, err := s.transferSvc.GetCurrentPigsInPen(tx, penID)
+		if err != nil {
+			return err
+		}
+		currentPigs = pigs
+		return nil
+	})
+	return currentPigs, err
+}
+
+// GetTotalPigsInPensForBatch 实现了获取指定猪群下所有猪栏的当前总存栏数的逻辑。
+func (s *pigBatchService) GetTotalPigsInPensForBatch(batchID uint) (int, error) {
+	var totalPigs int
+	err := s.uow.ExecuteInTransaction(func(tx *gorm.DB) error {
+		pigs, err := s.transferSvc.GetTotalPigsInPensForBatchTx(tx, batchID)
+		if err != nil {
+			return err
+		}
+		totalPigs = pigs
+		return nil
+	})
+	return totalPigs, err
+}