first commit

service/task_service.go

@@ -0,0 +1,129 @@
+package service
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"model-asynch/dao"
+	"model-asynch/model/dto"
+	"model-asynch/model/entity"
+
+	"github.com/gogf/gf/v2/os/gtime"
+	"github.com/google/uuid"
+)
+
+var Task = &taskService{}
+
+type taskService struct{}
+
+func (s *taskService) Create(ctx context.Context, req *dto.CreateTaskReq) (res *dto.CreateTaskRes, err error) {
+	// 固化 token/user 等信息
+	ctx = asyncCtx(ctx)
+
+	// 1) 检查模型配置
+	m, err := dao.Model.GetByModelName(ctx, req.ModelName)
+	if err != nil {
+		return nil, err
+	}
+	if m == nil || m.Enabled != 1 {
+		return nil, errors.New("模型不存在或未启用")
+	}
+
+	// 2) 排队上限（近似控制）
+	if m.QueueLimit > 0 {
+		cnt, err := dao.Task.CountActiveByModel(ctx, req.ModelName)
+		if err != nil {
+			return nil, err
+		}
+		if cnt >= int64(m.QueueLimit) {
+			return nil, errors.New("任务排队已满，请稍后再试")
+		}
+	}
+
+	taskID := uuid.NewString()
+	// 将调用模型的 payload 与透传头信息一起存入 request_payload，供后台 worker 使用
+	storedPayload := map[string]any{
+		"payload": req.RequestPayload,
+		"headers": forwardHeaders(ctx),
+	}
+
+	t := &entity.AsynchTask{
+		ModelName:      req.ModelName,
+		TaskID:         taskID,
+		State:          0,
+		InputRef:       req.InputRef,
+		RequestPayload: storedPayload,
+	}
+	_, err = dao.Task.Insert(ctx, t)
+	if err != nil {
+		return nil, err
+	}
+	return &dto.CreateTaskRes{TaskID: taskID}, nil
+}
+
+func (s *taskService) GetResult(ctx context.Context, taskID string) (res *dto.GetTaskResultRes, err error) {
+	t, err := dao.Task.GetByTaskID(ctx, taskID)
+	if err != nil {
+		return nil, err
+	}
+	if t == nil {
+		return nil, errors.New("任务不存在")
+	}
+	return &dto.GetTaskResultRes{
+		OssFile: t.OssFile,
+		State:   t.State,
+	}, nil
+}
+
+// GetBatch 批量查询任务；将成功(state=2)的任务更新为已下载(state=4)，并写入过期时间
+func (s *taskService) GetBatch(ctx context.Context, req *dto.GetTaskBatchReq) (res *dto.GetTaskBatchRes, err error) {
+	if req == nil || len(req.TaskIDs) == 0 {
+		return &dto.GetTaskBatchRes{List: []dto.GetTaskBatchItem{}}, nil
+	}
+	// 1) 先查当前租户下的任务列表
+	list, err := dao.Task.ListByTaskIDs(ctx, req.TaskIDs)
+	if err != nil {
+		return nil, err
+	}
+
+	// 2) 对成功(state=2)的任务：标记为已下载(state=4)并写入 expire_at
+	now := time.Now()
+	for _, t := range list {
+		if t == nil {
+			continue
+		}
+		if t.State != 2 {
+			continue
+		}
+		// 按模型配置决定保留时间
+		m, err := dao.Model.GetByModelName(ctx, t.ModelName)
+		if err != nil {
+			return nil, err
+		}
+		retainSeconds := 86400
+		if m != nil && m.AutoCleanSeconds > 0 {
+			retainSeconds = m.AutoCleanSeconds
+		}
+		expireAt := gtime.New(now.Add(time.Duration(retainSeconds) * time.Second))
+		_ = dao.Task.MarkDownloadedByID(ctx, t.Id, expireAt)
+
+		// 为了本次返回一致性，内存里也更新
+		t.State = 4
+		t.ExpireAt = expireAt
+	}
+
+	// 3) 组装返回
+	items := make([]dto.GetTaskBatchItem, 0, len(list))
+	for _, t := range list {
+		if t == nil {
+			continue
+		}
+		items = append(items, dto.GetTaskBatchItem{
+			TaskID:  t.TaskID,
+			State:   t.State,
+			OssFile: t.OssFile,
+		})
+	}
+	return &dto.GetTaskBatchRes{List: items}, nil
+}