init
This commit is contained in:
@@ -0,0 +1,645 @@
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package services
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import (
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"crypto/md5"
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"encoding/hex"
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"fmt"
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"io"
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"mime"
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"os"
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"path/filepath"
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"strings"
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"time"
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"github.com/goravel/framework/contracts/http"
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"github.com/goravel/framework/facades"
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apperrors "goravel/app/errors"
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"goravel/app/http/helpers"
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"goravel/app/models"
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"goravel/app/utils"
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"goravel/app/utils/errorlog"
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)
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type AttachmentService interface {
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// GetByID 根据ID获取附件
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GetByID(id uint) (*models.Attachment, error)
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// GetByIDs 根据ID列表获取附件
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GetByIDs(ids []uint) ([]models.Attachment, error)
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// GetList 获取附件列表
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GetList(filters AttachmentFilters, page, pageSize int) ([]models.Attachment, int64, error)
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// InitChunkUpload 初始化分片上传（不再使用服务端缓存）
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InitChunkUpload(filename string, totalSize int64, chunkSize int64, totalChunks int) (string, error)
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// UploadChunk 上传分片（不再使用服务端缓存）
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UploadChunk(chunkID string, chunkIndex int, chunkData []byte) error
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// MergeChunks 合并分片（不再使用服务端缓存，需要传入 totalChunks）
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MergeChunks(chunkID string, filename string, mimeType string, totalChunks int) (*models.Attachment, error)
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// GetChunkProgress 获取分片上传进度（不再使用服务端缓存，需要传入 totalChunks）
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GetChunkProgress(chunkID string, totalChunks int) (map[string]any, error)
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// UploadFile 普通文件上传（小文件）
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UploadFile(fileData []byte, filename string, mimeType string) (*models.Attachment, error)
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// GetFileURL 获取文件访问URL
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GetFileURL(attachment *models.Attachment) string
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// GetFileType 根据MIME类型判断文件类型
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GetFileType(mimeType string) string
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// DeleteFile 删除文件
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DeleteFile(attachment *models.Attachment) error
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// UpdateDisplayName 更新显示名称
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UpdateDisplayName(id uint, displayName string) error
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}
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// AttachmentFilters 附件查询过滤器
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type AttachmentFilters struct {
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AdminID string
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Filename string
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DisplayName string
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FileType string
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Extension string
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StartTime string
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EndTime string
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OrderBy string
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}
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type AttachmentServiceImpl struct {
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ctx http.Context
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disk string
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systemLogService SystemLogService
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}
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func NewAttachmentService(ctx http.Context) AttachmentService {
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// 从数据库读取文件存储配置
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// 优先使用 file_disk，如果没有则使用 storage_disk（向后兼容），最后使用默认值 local
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disk := utils.GetConfigValue("storage", "file_disk", "")
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if disk == "" {
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disk = utils.GetConfigValue("storage", "storage_disk", "")
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}
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if disk == "" {
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disk = "local"
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}
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return &AttachmentServiceImpl{
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ctx: ctx,
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disk: disk,
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systemLogService: NewSystemLogService(),
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}
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}
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// InitChunkUpload 初始化分片上传
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// 注意：分片信息由客户端缓存，服务端只生成 chunkID
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func (s *AttachmentServiceImpl) InitChunkUpload(filename string, totalSize int64, chunkSize int64, totalChunks int) (string, error) {
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// 检查存储驱动：大文件分片上传仅支持本地存储
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cloudStorageDrivers := []string{"s3", "oss", "cos", "minio", "qiniu"}
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for _, driver := range cloudStorageDrivers {
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if s.disk == driver {
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return "", apperrors.ErrChunkUploadOnlyLocalStorage.WithMessage(fmt.Sprintf("大文件分片上传仅支持本地存储，当前存储驱动为: %s", driver))
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}
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}
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// 生成唯一的分片ID
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hash := md5.Sum(fmt.Appendf(nil, "%s_%d_%d", filename, totalSize, time.Now().UnixNano()))
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chunkID := hex.EncodeToString(hash[:])
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// 不再使用服务端缓存，分片信息由客户端管理
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return chunkID, nil
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}
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// UploadChunk 上传分片
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// 注意：不再使用服务端缓存，直接保存分片文件
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func (s *AttachmentServiceImpl) UploadChunk(chunkID string, chunkIndex int, chunkData []byte) error {
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if chunkIndex < 0 {
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return apperrors.ErrInvalidChunkIndex
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}
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// 保存分片到临时目录
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storage := facades.Storage().Disk(s.disk)
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chunkPath := fmt.Sprintf("chunks/%s/%d", chunkID, chunkIndex)
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if err := storage.Put(chunkPath, string(chunkData)); err != nil {
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if s.ctx != nil {
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errorlog.RecordHTTP(s.ctx, "attachment", "保存分片失败", map[string]any{
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"chunk_id": chunkID,
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"chunk_index": chunkIndex,
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"error": err.Error(),
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}, "保存分片失败: %w", err)
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}
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return apperrors.ErrSaveChunkFailed.WithError(err)
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}
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return nil
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}
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// MergeChunks 合并分片
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// 注意：不再使用服务端缓存，通过检查实际文件系统来验证分片
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func (s *AttachmentServiceImpl) MergeChunks(chunkID string, filename string, mimeType string, totalChunks int) (*models.Attachment, error) {
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storage := facades.Storage().Disk(s.disk)
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// 检查所有分片文件是否存在
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indices := make([]int, totalChunks)
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for i := range indices {
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chunkPath := fmt.Sprintf("chunks/%s/%d", chunkID, i)
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if !storage.Exists(chunkPath) {
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return nil, apperrors.ErrChunkNotFound.WithParams(map[string]any{
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"chunk_index": i,
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})
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}
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}
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// 生成最终文件路径
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ext := filepath.Ext(filename)
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if ext == "" {
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exts, _ := mime.ExtensionsByType(mimeType)
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if len(exts) > 0 {
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ext = exts[0]
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}
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}
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// 生成唯一文件名
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hash := md5.Sum([]byte(fmt.Sprintf("%s_%d", filename, time.Now().UnixNano())))
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uniqueName := hex.EncodeToString(hash[:]) + ext
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datePath := time.Now().Format("2006/01/02")
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finalPath := fmt.Sprintf("attachments/%s/%s", datePath, uniqueName)
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// 合并分片（流式写入，避免大文件内存占用过高）
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// 对于本地存储，直接使用文件系统操作以提高性能
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var fileSize int64
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var missingChunks []int // 记录缺失的分片索引
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// 获取存储根目录
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storageRoot := facades.Config().GetString("filesystems.disks." + s.disk + ".root")
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if storageRoot == "" {
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storageRoot = "storage/app"
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}
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// 构建目标文件的完整路径
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finalFullPath := filepath.Join(storageRoot, finalPath)
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// 确保目标目录存在
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if err := os.MkdirAll(filepath.Dir(finalFullPath), 0755); err != nil {
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if s.ctx != nil {
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errorlog.RecordHTTP(s.ctx, "attachment", "创建目标目录失败", map[string]any{
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"chunk_id": chunkID,
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"directory": filepath.Dir(finalFullPath),
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"error": err.Error(),
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}, "创建目标目录失败: %w", err)
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}
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return nil, apperrors.ErrCreateDirectoryFailed.WithError(err)
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}
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// 创建目标文件（流式写入）
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outFile, err := os.Create(finalFullPath)
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if err != nil {
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if s.ctx != nil {
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errorlog.RecordHTTP(s.ctx, "attachment", "创建目标文件失败", map[string]any{
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"chunk_id": chunkID,
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"file_path": finalFullPath,
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"error": err.Error(),
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}, "创建目标文件失败: %w", err)
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}
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return nil, apperrors.ErrCreateFileFailed.WithError(err)
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}
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defer outFile.Close()
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// 按顺序读取并写入每个分片
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for i := range make([]int, totalChunks) {
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chunkPath := fmt.Sprintf("chunks/%s/%d", chunkID, i)
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chunkFullPath := filepath.Join(storageRoot, chunkPath)
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// 检查分片文件是否存在
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if _, err := os.Stat(chunkFullPath); os.IsNotExist(err) {
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missingChunks = append(missingChunks, i)
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continue
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}
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// 打开分片文件
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chunkFile, err := os.Open(chunkFullPath)
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if err != nil {
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// 读取失败，记录到系统日志
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if s.ctx != nil {
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_ = s.systemLogService.RecordHTTP(s.ctx, "warning", "attachment", fmt.Sprintf("Failed to read chunk %d for chunkID %s", i, chunkID), map[string]any{
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"chunk_index": i,
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"chunk_id": chunkID,
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"error": err.Error(),
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})
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}
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missingChunks = append(missingChunks, i)
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continue
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}
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// 流式复制分片内容到目标文件
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written, err := io.Copy(outFile, chunkFile)
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if err != nil {
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chunkFile.Close()
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// 如果写入失败，删除已创建的目标文件
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_ = os.Remove(finalFullPath)
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if s.ctx != nil {
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errorlog.RecordHTTP(s.ctx, "attachment", "写入分片失败", map[string]any{
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"chunk_id": chunkID,
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"chunk_index": i,
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"file_path": finalFullPath,
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"error": err.Error(),
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}, "写入分片 %d 失败: %w", i, err)
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}
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return nil, apperrors.ErrWriteChunkFailed.WithError(err).WithParams(map[string]any{
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"chunk_index": i,
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})
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}
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fileSize += written
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chunkFile.Close()
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}
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// 关闭目标文件
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if err := outFile.Close(); err != nil {
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_ = os.Remove(finalFullPath)
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if s.ctx != nil {
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errorlog.RecordHTTP(s.ctx, "attachment", "关闭目标文件失败", map[string]any{
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"chunk_id": chunkID,
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"file_path": finalFullPath,
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"error": err.Error(),
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}, "关闭目标文件失败: %w", err)
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}
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return nil, apperrors.ErrCloseFileFailed.WithError(err)
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}
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// 检查是否有缺失的分片
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if len(missingChunks) > 0 {
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_ = os.Remove(finalFullPath)
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return nil, apperrors.ErrChunkMissing.WithParams(map[string]any{
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"missing_chunks": missingChunks,
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"count": len(missingChunks),
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})
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}
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// 检查是否有数据被合并
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if fileSize == 0 {
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_ = os.Remove(finalFullPath)
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return nil, apperrors.ErrNoChunkDataToMerge
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}
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// 验证文件大小（从文件系统获取实际大小）
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if fileInfo, err := os.Stat(finalFullPath); err == nil {
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fileSize = fileInfo.Size()
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}
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// 创建附件记录
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adminID := uint(0)
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if s.ctx != nil {
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if id, err := helpers.GetAdminIDFromContext(s.ctx); err == nil {
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adminID = id
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}
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}
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fileType := s.GetFileType(mimeType)
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attachment := &models.Attachment{
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AdminID: adminID,
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Disk: s.disk,
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Path: finalPath,
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Filename: filename,
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Extension: strings.TrimPrefix(ext, "."),
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MimeType: mimeType,
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Size: fileSize,
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Status: 1,
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FileType: fileType,
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ChunkID: chunkID,
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}
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if err := facades.Orm().Query().Create(attachment); err != nil {
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// 如果创建记录失败，删除已上传的文件
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_ = storage.Delete(finalPath)
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if s.ctx != nil {
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errorlog.RecordHTTP(s.ctx, "attachment", "创建附件记录失败", map[string]any{
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"chunk_id": chunkID,
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"file_path": finalPath,
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"filename": filename,
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"error": err.Error(),
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}, "创建附件记录失败: %w", err)
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}
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return nil, apperrors.ErrCreateFailed.WithError(err)
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}
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// 合并成功后才清理分片文件（确保数据已保存到数据库）
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// 清理所有分片文件（包括可能缺失的）
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cleanupSuccess := true
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cleanupCount := 0
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for i := range make([]int, totalChunks) {
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chunkPath := fmt.Sprintf("chunks/%s/%d", chunkID, i)
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if storage.Exists(chunkPath) {
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if err := storage.Delete(chunkPath); err != nil {
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// 记录删除失败到系统日志，但不影响整体流程
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if s.ctx != nil {
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_ = s.systemLogService.RecordHTTP(s.ctx, "warning", "attachment", fmt.Sprintf("Failed to delete chunk file %s", chunkPath), map[string]any{
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"chunk_path": chunkPath,
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"chunk_id": chunkID,
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"error": err.Error(),
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})
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}
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cleanupSuccess = false
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} else {
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cleanupCount++
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}
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}
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}
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if !cleanupSuccess && s.ctx != nil {
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// 记录部分分片删除失败的警告到系统日志
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_ = s.systemLogService.RecordHTTP(s.ctx, "warning", "attachment", fmt.Sprintf("Some chunk files failed to delete for chunkID %s", chunkID), map[string]any{
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"chunk_id": chunkID,
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"cleaned_count": cleanupCount,
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"total_chunks": totalChunks,
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})
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}
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return attachment, nil
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}
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// GetChunkProgress 获取分片上传进度
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// 注意：不再使用服务端缓存，通过检查实际文件系统来获取进度
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// 优化：如果分片数量很大，可以考虑限制返回的索引数量或使用并发检查
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func (s *AttachmentServiceImpl) GetChunkProgress(chunkID string, totalChunks int) (map[string]any, error) {
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storage := facades.Storage().Disk(s.disk)
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uploadedCount := 0
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uploadedIndices := []int{} // 已上传的分片索引数组
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// 优化：如果分片数量超过1000，只返回前100个已上传的索引，减少响应大小
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maxIndices := 100
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if totalChunks > 1000 {
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maxIndices = 100
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}
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// 检查每个分片文件是否存在
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indices := make([]int, totalChunks)
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for i := range indices {
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chunkPath := fmt.Sprintf("chunks/%s/%d", chunkID, i)
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if storage.Exists(chunkPath) {
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uploadedCount++
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// 只记录前 maxIndices 个索引，减少响应大小
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if len(uploadedIndices) < maxIndices {
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uploadedIndices = append(uploadedIndices, i)
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}
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}
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}
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progress := float64(uploadedCount) / float64(totalChunks) * 100
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return map[string]any{
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"chunk_id": chunkID,
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"total_chunks": totalChunks,
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"uploaded_count": uploadedCount,
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"uploaded_chunks": uploadedIndices, // 返回已上传的分片索引数组（最多100个）
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"progress": progress,
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"completed": uploadedCount == totalChunks,
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}, nil
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}
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// UploadFile 普通文件上传（小文件）
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func (s *AttachmentServiceImpl) UploadFile(fileData []byte, filename string, mimeType string) (*models.Attachment, error) {
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if mimeType == "" {
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mimeType = "application/octet-stream"
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}
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// 生成文件路径
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ext := filepath.Ext(filename)
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hash := md5.Sum([]byte(fmt.Sprintf("%s_%d", filename, time.Now().UnixNano())))
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uniqueName := hex.EncodeToString(hash[:]) + ext
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datePath := time.Now().Format("2006/01/02")
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finalPath := fmt.Sprintf("attachments/%s/%s", datePath, uniqueName)
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// 保存文件
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storage := facades.Storage().Disk(s.disk)
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if err := storage.Put(finalPath, string(fileData)); err != nil {
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if s.ctx != nil {
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errorlog.RecordHTTP(s.ctx, "attachment", "保存文件失败", map[string]any{
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"filename": filename,
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"file_path": finalPath,
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"error": err.Error(),
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}, "保存文件失败: %w", err)
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}
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return nil, apperrors.ErrSaveFileFailed.WithError(err)
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}
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// 获取文件大小
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fileSize := int64(len(fileData))
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if size, err := storage.Size(finalPath); err == nil {
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fileSize = size
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}
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// 创建附件记录
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adminID := uint(0)
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if s.ctx != nil {
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if id, err := helpers.GetAdminIDFromContext(s.ctx); err == nil {
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||||
adminID = id
|
||||
}
|
||||
}
|
||||
|
||||
fileType := s.GetFileType(mimeType)
|
||||
attachment := &models.Attachment{
|
||||
AdminID: adminID,
|
||||
Disk: s.disk,
|
||||
Path: finalPath,
|
||||
Filename: filename,
|
||||
Extension: strings.TrimPrefix(ext, "."),
|
||||
MimeType: mimeType,
|
||||
Size: fileSize,
|
||||
Status: 1,
|
||||
FileType: fileType,
|
||||
}
|
||||
|
||||
if err := facades.Orm().Query().Create(attachment); err != nil {
|
||||
_ = storage.Delete(finalPath)
|
||||
if s.ctx != nil {
|
||||
errorlog.RecordHTTP(s.ctx, "attachment", "创建附件记录失败", map[string]any{
|
||||
"filename": filename,
|
||||
"file_path": finalPath,
|
||||
"error": err.Error(),
|
||||
}, "创建附件记录失败: %w", err)
|
||||
}
|
||||
return nil, apperrors.ErrCreateFailed.WithError(err)
|
||||
}
|
||||
|
||||
return attachment, nil
|
||||
}
|
||||
|
||||
// GetFileURL 获取文件访问URL
|
||||
func (s *AttachmentServiceImpl) GetFileURL(attachment *models.Attachment) string {
|
||||
// 对于本地存储，返回下载接口URL
|
||||
if attachment.Disk == "local" || attachment.Disk == "public" {
|
||||
return fmt.Sprintf("/api/admin/attachments/%d/preview", attachment.ID)
|
||||
}
|
||||
|
||||
// 对于云存储，生成临时URL或直接URL
|
||||
storage := facades.Storage().Disk(attachment.Disk)
|
||||
|
||||
// 尝试生成临时URL（24小时有效）
|
||||
if url, err := storage.TemporaryUrl(attachment.Path, time.Now().Add(24*time.Hour)); err == nil {
|
||||
return url
|
||||
}
|
||||
|
||||
// 如果生成临时URL失败，尝试从配置获取基础URL
|
||||
var configURL string
|
||||
switch attachment.Disk {
|
||||
case "s3":
|
||||
configURL = utils.GetConfigValue("storage", "s3_url", "")
|
||||
case "oss":
|
||||
configURL = utils.GetConfigValue("storage", "oss_url", "")
|
||||
case "cos":
|
||||
configURL = utils.GetConfigValue("storage", "cos_url", "")
|
||||
case "minio":
|
||||
configURL = utils.GetConfigValue("storage", "minio_url", "")
|
||||
}
|
||||
|
||||
if configURL != "" {
|
||||
if !strings.HasSuffix(configURL, "/") {
|
||||
configURL += "/"
|
||||
}
|
||||
return configURL + attachment.Path
|
||||
}
|
||||
|
||||
// 默认返回下载接口URL
|
||||
return fmt.Sprintf("/api/admin/attachments/%d/preview", attachment.ID)
|
||||
}
|
||||
|
||||
// GetFileType 根据MIME类型判断文件类型
|
||||
func (s *AttachmentServiceImpl) GetFileType(mimeType string) string {
|
||||
if strings.HasPrefix(mimeType, "image/") {
|
||||
return "image"
|
||||
}
|
||||
if strings.HasPrefix(mimeType, "video/") {
|
||||
return "video"
|
||||
}
|
||||
if strings.HasPrefix(mimeType, "application/pdf") ||
|
||||
strings.HasPrefix(mimeType, "application/msword") ||
|
||||
strings.HasPrefix(mimeType, "application/vnd.openxmlformats-officedocument") ||
|
||||
strings.HasPrefix(mimeType, "application/vnd.ms-excel") ||
|
||||
strings.HasPrefix(mimeType, "text/") {
|
||||
return "document"
|
||||
}
|
||||
return "other"
|
||||
}
|
||||
|
||||
// GetByID 根据ID获取附件
|
||||
func (s *AttachmentServiceImpl) GetByID(id uint) (*models.Attachment, error) {
|
||||
var attachment models.Attachment
|
||||
if err := facades.Orm().Query().Where("id", id).First(&attachment); err != nil {
|
||||
return nil, apperrors.ErrAttachmentNotFound.WithError(err)
|
||||
}
|
||||
return &attachment, nil
|
||||
}
|
||||
|
||||
// GetByIDs 根据ID列表获取附件
|
||||
func (s *AttachmentServiceImpl) GetByIDs(ids []uint) ([]models.Attachment, error) {
|
||||
if len(ids) == 0 {
|
||||
return []models.Attachment{}, nil
|
||||
}
|
||||
|
||||
idsAny := helpers.ConvertUintSliceToAny(ids)
|
||||
var attachments []models.Attachment
|
||||
if err := facades.Orm().Query().WhereIn("id", idsAny).Get(&attachments); err != nil {
|
||||
return nil, apperrors.ErrQueryFailed.WithError(err)
|
||||
}
|
||||
return attachments, nil
|
||||
}
|
||||
|
||||
// GetList 获取附件列表
|
||||
func (s *AttachmentServiceImpl) GetList(filters AttachmentFilters, page, pageSize int) ([]models.Attachment, int64, error) {
|
||||
query := facades.Orm().Query().Model(&models.Attachment{})
|
||||
|
||||
// 应用筛选条件
|
||||
if filters.AdminID != "" {
|
||||
query = query.Where("admin_id", filters.AdminID)
|
||||
}
|
||||
if filters.Filename != "" {
|
||||
query = query.Where("filename LIKE ?", "%"+filters.Filename+"%")
|
||||
}
|
||||
if filters.DisplayName != "" {
|
||||
query = query.Where("display_name LIKE ?", "%"+filters.DisplayName+"%")
|
||||
}
|
||||
if filters.FileType != "" {
|
||||
query = query.Where("file_type = ?", filters.FileType)
|
||||
}
|
||||
if filters.Extension != "" {
|
||||
query = query.Where("extension = ?", filters.Extension)
|
||||
}
|
||||
if filters.StartTime != "" {
|
||||
query = query.Where("created_at >= ?", filters.StartTime)
|
||||
}
|
||||
if filters.EndTime != "" {
|
||||
query = query.Where("created_at <= ?", filters.EndTime)
|
||||
}
|
||||
|
||||
// 应用排序
|
||||
orderBy := filters.OrderBy
|
||||
if orderBy == "" {
|
||||
orderBy = "id:desc"
|
||||
}
|
||||
query = helpers.ApplySort(query, orderBy, "id:desc")
|
||||
|
||||
// 分页查询
|
||||
var attachments []models.Attachment
|
||||
var total int64
|
||||
if err := query.With("Admin").Paginate(page, pageSize, &attachments, &total); err != nil {
|
||||
return nil, 0, err
|
||||
}
|
||||
|
||||
return attachments, total, nil
|
||||
}
|
||||
|
||||
// UpdateDisplayName 更新显示名称
|
||||
func (s *AttachmentServiceImpl) UpdateDisplayName(id uint, displayName string) error {
|
||||
var attachment models.Attachment
|
||||
if err := facades.Orm().Query().Where("id", id).First(&attachment); err != nil {
|
||||
return fmt.Errorf("附件不存在: %v", err)
|
||||
}
|
||||
|
||||
attachment.DisplayName = displayName
|
||||
if err := facades.Orm().Query().Save(&attachment); err != nil {
|
||||
if s.ctx != nil {
|
||||
errorlog.RecordHTTP(s.ctx, "attachment", "更新附件显示名称失败", map[string]any{
|
||||
"attachment_id": id,
|
||||
"display_name": displayName,
|
||||
"error": err.Error(),
|
||||
}, "更新附件显示名称失败: %v", err)
|
||||
}
|
||||
return apperrors.ErrUpdateFailed.WithError(err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// DeleteFile 删除文件
|
||||
func (s *AttachmentServiceImpl) DeleteFile(attachment *models.Attachment) error {
|
||||
// 删除文件
|
||||
if attachment.Path != "" && attachment.Disk != "" {
|
||||
storage := facades.Storage().Disk(attachment.Disk)
|
||||
if err := storage.Delete(attachment.Path); err != nil {
|
||||
if s.ctx != nil {
|
||||
errorlog.RecordHTTP(s.ctx, "attachment", "删除文件失败", map[string]any{
|
||||
"attachment_id": attachment.ID,
|
||||
"file_path": attachment.Path,
|
||||
"disk": attachment.Disk,
|
||||
"error": err.Error(),
|
||||
}, "删除文件失败: %w", err)
|
||||
}
|
||||
return apperrors.ErrDeleteFileFailed.WithError(err)
|
||||
}
|
||||
}
|
||||
|
||||
// 删除数据库记录
|
||||
if _, err := facades.Orm().Query().Delete(attachment); err != nil {
|
||||
if s.ctx != nil {
|
||||
errorlog.RecordHTTP(s.ctx, "attachment", "删除附件记录失败", map[string]any{
|
||||
"attachment_id": attachment.ID,
|
||||
"error": err.Error(),
|
||||
}, "删除附件记录失败: %w", err)
|
||||
}
|
||||
return apperrors.ErrDeleteFailed.WithError(err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
Reference in New Issue
Block a user