阶段性提交

internal/db/models/file_dao.go

@@ -0,0 +1,141 @@
+package models
+
+import (
+	_ "github.com/go-sql-driver/mysql"
+	"github.com/iwind/TeaGo/Tea"
+	"github.com/iwind/TeaGo/dbs"
+	"github.com/iwind/TeaGo/types"
+	"mime/multipart"
+	"os"
+)
+
+const (
+	FileStateEnabled  = 1 // 已启用
+	FileStateDisabled = 0 // 已禁用
+)
+
+type FileDAO dbs.DAO
+
+func NewFileDAO() *FileDAO {
+	return dbs.NewDAO(&FileDAO{
+		DAOObject: dbs.DAOObject{
+			DB:     Tea.Env,
+			Table:  "edgeFiles",
+			Model:  new(File),
+			PkName: "id",
+		},
+	}).(*FileDAO)
+}
+
+var SharedFileDAO = NewFileDAO()
+
+// 启用条目
+func (this *FileDAO) EnableFile(id int64) error {
+	_, err := this.Query().
+		Pk(id).
+		Set("state", FileStateEnabled).
+		Update()
+	return err
+}
+
+// 禁用条目
+func (this *FileDAO) DisableFile(id int64) error {
+	_, err := this.Query().
+		Pk(id).
+		Set("state", FileStateDisabled).
+		Update()
+	return err
+}
+
+// 查找启用中的条目
+func (this *FileDAO) FindEnabledFile(id int64) (*File, error) {
+	result, err := this.Query().
+		Pk(id).
+		Attr("state", FileStateEnabled).
+		Find()
+	if result == nil {
+		return nil, err
+	}
+	return result.(*File), err
+}
+
+// 创建文件
+func (this *FileDAO) CreateFileFromReader(businessType, description string, filename string, body *multipart.FileHeader, order int) (int, error) {
+	file, err := body.Open()
+	if err != nil {
+		return 0, err
+	}
+
+	op := NewFileOperator()
+	op.Type = businessType
+	op.Description = description
+	op.State = FileStateEnabled
+	op.Size = body.Size
+	op.Order = order
+	op.Filename = filename
+	_, err = this.Save(op)
+	if err != nil {
+		return 0, err
+	}
+
+	fileId := types.Int(op.Id)
+
+	// 保存chunk
+	buf := make([]byte, 512*1024)
+	for {
+		n, err := file.Read(buf)
+		if n > 0 {
+			err1 := SharedFileChunkDAO.CreateFileChunk(fileId, buf[:n])
+			if err1 != nil {
+				return 0, err1
+			}
+		}
+		if err != nil {
+			break
+		}
+	}
+
+	return fileId, nil
+}
+
+// 创建一个空文件
+func (this *FileDAO) UploadLocalFile(businessType string, localFile string, filename string) (fileId int, err error) {
+	reader, err := os.Open(localFile)
+	if err != nil {
+		return 0, err
+	}
+	defer func() {
+		_ = reader.Close()
+	}()
+	stat, err := reader.Stat()
+	if err != nil {
+		return 0, err
+	}
+
+	op := NewFileOperator()
+	op.Type = businessType
+	op.Filename = filename
+	op.Size = stat.Size()
+	op.State = FileStateEnabled
+	_, err = this.Save(op)
+	if err != nil {
+		return
+	}
+	fileId = types.Int(op.Id)
+
+	buf := make([]byte, 512*1024)
+	for {
+		n, err := reader.Read(buf)
+		if n > 0 {
+			err1 := SharedFileChunkDAO.CreateFileChunk(fileId, buf[:n])
+			if err1 != nil {
+				return 0, err1
+			}
+		}
+		if err != nil {
+			break
+		}
+	}
+
+	return fileId, nil
+}