You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
cloudreve/pkg/filesystem/manage.go

468 lines
12 KiB

This file contains ambiguous Unicode characters!

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

package filesystem
import (
"context"
"fmt"
model "github.com/HFO4/cloudreve/models"
"github.com/HFO4/cloudreve/pkg/filesystem/fsctx"
"github.com/HFO4/cloudreve/pkg/hashid"
"github.com/HFO4/cloudreve/pkg/serializer"
"github.com/HFO4/cloudreve/pkg/util"
"path"
"strings"
)
/* =================
文件/目录管理
=================
*/
// Object 文件或者目录
type Object struct {
ID string `json:"id"`
Name string `json:"name"`
Path string `json:"path"`
Pic string `json:"pic"`
Size uint64 `json:"size"`
Type string `json:"type"`
Date string `json:"date"`
Key string `json:"key,omitempty"`
}
// Rename 重命名对象
func (fs *FileSystem) Rename(ctx context.Context, dir, file []uint, new string) (err error) {
// 验证新名字
if !fs.ValidateLegalName(ctx, new) || (len(file) > 0 && !fs.ValidateExtension(ctx, new)) {
return ErrIllegalObjectName
}
// 如果源对象是文件
if len(file) > 0 {
fileObject, err := model.GetFilesByIDs([]uint{file[0]}, fs.User.ID)
if err != nil || len(fileObject) == 0 {
return ErrPathNotExist
}
err = fileObject[0].Rename(new)
if err != nil {
return ErrFileExisted
}
return nil
}
if len(dir) > 0 {
folderObject, err := model.GetFoldersByIDs([]uint{dir[0]}, fs.User.ID)
if err != nil || len(folderObject) == 0 {
return ErrPathNotExist
}
err = folderObject[0].Rename(new)
if err != nil {
return ErrFileExisted
}
return nil
}
return ErrPathNotExist
}
// Copy 复制src目录下的文件或目录到dst
// 暂时只支持单文件
func (fs *FileSystem) Copy(ctx context.Context, dirs, files []uint, src, dst string) error {
// 获取目的目录
isDstExist, dstFolder := fs.IsPathExist(dst)
isSrcExist, srcFolder := fs.IsPathExist(src)
// 不存在时返回空的结果
if !isDstExist || !isSrcExist {
return ErrPathNotExist
}
// 记录复制的文件的总容量
var newUsedStorage uint64
// 复制目录
if len(dirs) > 0 {
subFileSizes, err := srcFolder.CopyFolderTo(dirs[0], dstFolder)
if err != nil {
return serializer.NewError(serializer.CodeDBError, "操作失败,可能有重名冲突", err)
}
newUsedStorage += subFileSizes
}
// 复制文件
if len(files) > 0 {
subFileSizes, err := srcFolder.MoveOrCopyFileTo(files, dstFolder, true)
if err != nil {
return serializer.NewError(serializer.CodeDBError, "操作失败,可能有重名冲突", err)
}
newUsedStorage += subFileSizes
}
// 扣除容量
fs.User.IncreaseStorageWithoutCheck(newUsedStorage)
return nil
}
// Move 移动文件和目录, 将id列表dirs和files从src移动至dst
func (fs *FileSystem) Move(ctx context.Context, dirs, files []uint, src, dst string) error {
// 获取目的目录
isDstExist, dstFolder := fs.IsPathExist(dst)
isSrcExist, srcFolder := fs.IsPathExist(src)
// 不存在时返回空的结果
if !isDstExist || !isSrcExist {
return ErrPathNotExist
}
// 处理目录及子文件移动
err := srcFolder.MoveFolderTo(dirs, dstFolder)
if err != nil {
return serializer.NewError(serializer.CodeDBError, "操作失败,可能有重名冲突", err)
}
// 处理文件移动
_, err = srcFolder.MoveOrCopyFileTo(files, dstFolder, false)
if err != nil {
return serializer.NewError(serializer.CodeDBError, "操作失败,可能有重名冲突", err)
}
// 移动文件
return err
}
// Delete 递归删除对象, force 为 true 时强制删除文件记录,忽略物理删除是否成功
func (fs *FileSystem) Delete(ctx context.Context, dirs, files []uint, force bool) error {
// 已删除的总容量,map用于去重
var deletedStorage = make(map[uint]uint64)
var totalStorage = make(map[uint]uint64)
// 已删除的文件ID
var deletedFileIDs = make([]uint, 0, len(fs.FileTarget))
// 删除失败的文件的父目录ID
// 所有文件的ID
var allFileIDs = make([]uint, 0, len(fs.FileTarget))
// 列出要删除的目录
if len(dirs) > 0 {
err := fs.ListDeleteDirs(ctx, dirs)
if err != nil {
return err
}
}
// 列出要删除的文件
if len(files) > 0 {
err := fs.ListDeleteFiles(ctx, files)
if err != nil {
return err
}
}
// 去除待删除文件中包含软连接的部分
filesToBeDelete, err := model.RemoveFilesWithSoftLinks(fs.FileTarget)
if err != nil {
return ErrDBListObjects.WithError(err)
}
// 根据存储策略将文件分组
policyGroup := fs.GroupFileByPolicy(ctx, filesToBeDelete)
// 按照存储策略分组删除对象
failed := fs.deleteGroupedFile(ctx, policyGroup)
// 整理删除结果
for i := 0; i < len(fs.FileTarget); i++ {
if !util.ContainsString(failed[fs.FileTarget[i].PolicyID], fs.FileTarget[i].SourceName) {
// 已成功删除的文件
deletedFileIDs = append(deletedFileIDs, fs.FileTarget[i].ID)
deletedStorage[fs.FileTarget[i].ID] = fs.FileTarget[i].Size
}
// 全部文件
totalStorage[fs.FileTarget[i].ID] = fs.FileTarget[i].Size
allFileIDs = append(allFileIDs, fs.FileTarget[i].ID)
}
// 如果强制删除,则将全部文件视为删除成功
if force {
deletedFileIDs = allFileIDs
deletedStorage = totalStorage
}
// 删除文件记录
err = model.DeleteFileByIDs(deletedFileIDs)
if err != nil {
return ErrDBDeleteObjects.WithError(err)
}
// 删除文件记录对应的分享记录
model.DeleteShareBySourceIDs(deletedFileIDs, false)
// 归还容量
var total uint64
for _, value := range deletedStorage {
total += value
}
fs.User.DeductionStorage(total)
// 如果文件全部删除成功,继续删除目录
if len(deletedFileIDs) == len(allFileIDs) {
var allFolderIDs = make([]uint, 0, len(fs.DirTarget))
for _, value := range fs.DirTarget {
allFolderIDs = append(allFolderIDs, value.ID)
}
err = model.DeleteFolderByIDs(allFolderIDs)
if err != nil {
return ErrDBDeleteObjects.WithError(err)
}
// 删除目录记录对应的分享记录
model.DeleteShareBySourceIDs(allFolderIDs, true)
}
if notDeleted := len(fs.FileTarget) - len(deletedFileIDs); notDeleted > 0 {
return serializer.NewError(
serializer.CodeNotFullySuccess,
fmt.Sprintf("有 %d 个文件未能成功删除", notDeleted),
nil,
)
}
return nil
}
// ListDeleteDirs 递归列出要删除目录,及目录下所有文件
func (fs *FileSystem) ListDeleteDirs(ctx context.Context, ids []uint) error {
// 列出所有递归子目录
folders, err := model.GetRecursiveChildFolder(ids, fs.User.ID, true)
if err != nil {
return ErrDBListObjects.WithError(err)
}
fs.SetTargetDir(&folders)
// 检索目录下的子文件
files, err := model.GetChildFilesOfFolders(&folders)
if err != nil {
return ErrDBListObjects.WithError(err)
}
fs.SetTargetFile(&files)
return nil
}
// ListDeleteFiles 根据给定的路径列出要删除的文件
func (fs *FileSystem) ListDeleteFiles(ctx context.Context, ids []uint) error {
files, err := model.GetFilesByIDs(ids, fs.User.ID)
if err != nil {
return ErrDBListObjects.WithError(err)
}
fs.SetTargetFile(&files)
return nil
}
// List 列出路径下的内容,
// pathProcessor为最终对象路径的处理钩子。
// 有些情况下(如在分享页面列对象)时,
// 路径需要截取掉被分享目录路径之前的部分。
func (fs *FileSystem) List(ctx context.Context, dirPath string, pathProcessor func(string) string) ([]Object, error) {
// 获取父目录
isExist, folder := fs.IsPathExist(dirPath)
if !isExist {
return nil, ErrPathNotExist
}
fs.SetTargetDir(&[]model.Folder{*folder})
var parentPath = path.Join(folder.Position, folder.Name)
var childFolders []model.Folder
var childFiles []model.File
// 获取子目录
childFolders, _ = folder.GetChildFolder()
// 获取子文件
childFiles, _ = folder.GetChildFiles()
return fs.listObjects(ctx, parentPath, childFiles, childFolders, pathProcessor), nil
}
// ListPhysical 列出存储策略中的外部目录
// TODO:测试
func (fs *FileSystem) ListPhysical(ctx context.Context, dirPath string) ([]Object, error) {
if err := fs.DispatchHandler(); fs.Policy == nil || err != nil {
return nil, ErrUnknownPolicyType
}
// 存储策略不支持列取时,返回空结果
if !fs.Policy.CanStructureBeListed() {
return nil, nil
}
// 列取路径
objects, err := fs.Handler.List(ctx, dirPath, false)
if err != nil {
return nil, err
}
var (
folders []model.Folder
)
for _, object := range objects {
if object.IsDir {
folders = append(folders, model.Folder{
Name: object.Name,
})
}
}
return fs.listObjects(ctx, dirPath, nil, folders, nil), nil
}
func (fs *FileSystem) listObjects(ctx context.Context, parent string, files []model.File, folders []model.Folder, pathProcessor func(string) string) []Object {
// 分享文件的ID
shareKey := ""
if key, ok := ctx.Value(fsctx.ShareKeyCtx).(string); ok {
shareKey = key
}
// 汇总处理结果
objects := make([]Object, 0, len(files)+len(folders))
// 所有对象的父目录
var processedPath string
for _, subFolder := range folders {
// 路径处理钩子,
// 所有对象父目录都是一样的,所以只处理一次
if processedPath == "" {
if pathProcessor != nil {
processedPath = pathProcessor(parent)
} else {
processedPath = parent
}
}
objects = append(objects, Object{
ID: hashid.HashID(subFolder.ID, hashid.FolderID),
Name: subFolder.Name,
Path: processedPath,
Pic: "",
Size: 0,
Type: "dir",
Date: subFolder.CreatedAt.Format("2006-01-02 15:04:05"),
})
}
for _, file := range files {
if processedPath == "" {
if pathProcessor != nil {
processedPath = pathProcessor(parent)
} else {
processedPath = parent
}
}
newFile := Object{
ID: hashid.HashID(file.ID, hashid.FileID),
Name: file.Name,
Path: processedPath,
Pic: file.PicInfo,
Size: file.Size,
Type: "file",
Date: file.CreatedAt.Format("2006-01-02 15:04:05"),
}
if shareKey != "" {
newFile.Key = shareKey
}
objects = append(objects, newFile)
}
return objects
}
// CreateDirectory 根据给定的完整创建目录,支持递归创建
func (fs *FileSystem) CreateDirectory(ctx context.Context, fullPath string) (*model.Folder, error) {
if fullPath == "/" || fullPath == "." || fullPath == "" {
return nil, ErrRootProtected
}
// 获取要创建目录的父路径和目录名
fullPath = path.Clean(fullPath)
base := path.Dir(fullPath)
dir := path.Base(fullPath)
// 去掉结尾空格
dir = strings.TrimRight(dir, " ")
// 检查目录名是否合法
if !fs.ValidateLegalName(ctx, dir) {
return nil, ErrIllegalObjectName
}
// 父目录是否存在
isExist, parent := fs.IsPathExist(base)
if !isExist {
// 递归创建父目录
if _, ok := ctx.Value(fsctx.IgnoreConflictCtx).(bool); !ok {
ctx = context.WithValue(ctx, fsctx.IgnoreConflictCtx, true)
}
newParent, err := fs.CreateDirectory(ctx, base)
if err != nil {
return nil, err
}
parent = newParent
}
// 是否有同名文件
if ok, _ := fs.IsChildFileExist(parent, dir); ok {
return nil, ErrFileExisted
}
// 创建目录
newFolder := model.Folder{
Name: dir,
ParentID: &parent.ID,
OwnerID: fs.User.ID,
}
_, err := newFolder.Create()
if err != nil {
if _, ok := ctx.Value(fsctx.IgnoreConflictCtx).(bool); !ok {
return nil, ErrFolderExisted
}
}
return &newFolder, nil
}
// SaveTo 将别人分享的文件转存到目标路径下
func (fs *FileSystem) SaveTo(ctx context.Context, path string) error {
// 获取父目录
isExist, folder := fs.IsPathExist(path)
if !isExist {
return ErrPathNotExist
}
var (
totalSize uint64
err error
)
if len(fs.DirTarget) > 0 {
totalSize, err = fs.DirTarget[0].CopyFolderTo(fs.DirTarget[0].ID, folder)
} else {
parent := model.Folder{
OwnerID: fs.FileTarget[0].UserID,
}
parent.ID = fs.FileTarget[0].FolderID
totalSize, err = parent.MoveOrCopyFileTo([]uint{fs.FileTarget[0].ID}, folder, true)
}
// 扣除用户容量
fs.User.IncreaseStorageWithoutCheck(totalSize)
if err != nil {
return ErrFileExisted.WithError(err)
}
return nil
}