예제 #1
0
파일: fs.go 프로젝트: jmptrader/tenpu
func (s *Storage) Put(filename string, contentType string, body io.Reader, attachment *tenpu.Attachment) (err error) {
	var f *mgo.GridFile
	s.database.DatabaseDo(func(db *mgo.Database) {
		f, err = db.GridFS("fs").Create(filename)
		defer f.Close()
		if err != nil {
			panic(err)
		}
		if attachment.Id != "" {
			f.SetId(bson.ObjectIdHex(attachment.Id))
		}
		f.SetContentType(contentType)
		_, err = io.Copy(f, body)
	})

	if err == io.ErrUnexpectedEOF {
		attId := f.Id().(bson.ObjectId)
		s.Delete(attId.Hex())
		return
	}

	if attachment.Id == "" {
		attachment.Id = f.Id().(bson.ObjectId).Hex()
		attachment.ContentLength = f.Size()
		attachment.ContentType = f.ContentType()
		attachment.Filename = f.Name()
		attachment.MD5 = f.MD5()
		if attachment.IsImage() {
			s.database.DatabaseDo(func(db *mgo.Database) {
				f, err := db.GridFS("fs").OpenId(bson.ObjectIdHex(attachment.Id))
				if err == nil {
					config, _, err := image.DecodeConfig(f)
					f.Close()
					if err == nil {
						attachment.Width = config.Width
						attachment.Height = config.Height
					}
				}
			})
		}
	}

	return
}