Finish most of Lock things.
This commit is contained in:
zicla
@ -90,7 +90,6 @@ func (this *MatterService) Upload(file io.Reader, user *User, dirMatter *Matter,
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this.userService.MatterLock(user.Uuid)
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defer this.userService.MatterUnlock(user.Uuid)
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//验证dirMatter
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if dirMatter == nil {
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panic(result.BadRequest("dirMatter cannot be nil."))
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@ -245,14 +244,153 @@ func (this *MatterService) CreateDirectory(dirMatter *Matter, name string, user
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return matter
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}
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//处理 移动和复制时可能存在的覆盖问题。
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func (this *MatterService) handleOverwrite(userUuid string, destinationPath string, overwrite bool) {
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//将一个srcMatter复制到另一个destMatter(必须为文件夹)下，名字叫做name
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func (this *MatterService) Copy(srcMatter *Matter, destDirMatter *Matter, name string) {
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//目标matter。因为有可能已经存在了
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destMatter := this.matterDao.findByUserUuidAndPath(userUuid, destinationPath)
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//如果目标matter存在了。
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if destMatter != nil {
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//如果目标matter还存在了。
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if overwrite {
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//要求覆盖。那么删除。
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this.matterDao.Delete(destMatter)
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} else {
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this.PanicBadRequest("%s已经存在，操作失败！", destMatter.Path)
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}
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}
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}
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//将一个srcMatter放置到另一个destMatter(必须为文件夹)下 不关注 overwrite 和 lock.
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func (this *MatterService) innerMove(srcMatter *Matter, destDirMatter *Matter) {
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if srcMatter == nil {
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panic(result.BadRequest("srcMatter cannot be nil."))
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}
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if !destDirMatter.Dir {
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this.PanicBadRequest("目标必须为文件夹")
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}
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if srcMatter.Dir {
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//如果源是文件夹
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destAbsolutePath := destDirMatter.AbsolutePath() + "/" + srcMatter.Name
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srcAbsolutePath := srcMatter.AbsolutePath()
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//物理文件一口气移动
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err := os.Rename(srcAbsolutePath, destAbsolutePath)
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this.PanicError(err)
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//修改数据库中信息
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srcMatter.Puuid = destDirMatter.Uuid
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srcMatter.Path = destDirMatter.Path + "/" + srcMatter.Name
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srcMatter = this.matterDao.Save(srcMatter)
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//调整该文件夹下文件的Path.
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matters := this.matterDao.List(srcMatter.Uuid, srcMatter.UserUuid, nil)
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for _, m := range matters {
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this.adjustPath(m, srcMatter)
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}
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} else {
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//如果源是普通文件
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destAbsolutePath := destDirMatter.AbsolutePath() + "/" + srcMatter.Name
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srcAbsolutePath := srcMatter.AbsolutePath()
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//物理文件进行移动
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err := os.Rename(srcAbsolutePath, destAbsolutePath)
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this.PanicError(err)
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//删除对应的缓存。
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this.imageCacheDao.DeleteByMatterUuid(srcMatter.Uuid)
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//修改数据库中信息
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srcMatter.Puuid = destDirMatter.Uuid
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srcMatter.Path = destDirMatter.Path + "/" + srcMatter.Name
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srcMatter = this.matterDao.Save(srcMatter)
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}
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return
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}
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//将一个srcMatter放置到另一个destMatter(必须为文件夹)下
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func (this *MatterService) Move(srcMatter *Matter, destDirMatter *Matter, overwrite bool) {
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if srcMatter == nil {
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panic(result.BadRequest("srcMatter cannot be nil."))
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}
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//操作锁
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this.userService.MatterLock(srcMatter.UserUuid)
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defer this.userService.MatterUnlock(srcMatter.UserUuid)
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if !destDirMatter.Dir {
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this.PanicBadRequest("目标必须为文件夹")
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}
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//文件夹不能把自己移入到自己中，也不可以移入到自己的子文件夹下。
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destDirMatter = this.WrapDetail(destDirMatter)
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tmpMatter := destDirMatter
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for tmpMatter != nil {
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if srcMatter.Uuid == tmpMatter.Uuid {
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panic("文件夹不能把自己移入到自己中，也不可以移入到自己的子文件夹下。")
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}
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tmpMatter = tmpMatter.Parent
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}
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//处理覆盖的问题
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destinationPath := destDirMatter.Path + "/" + srcMatter.Name
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this.handleOverwrite(srcMatter.UserUuid, destinationPath, overwrite)
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//做move操作。
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this.innerMove(srcMatter, destDirMatter)
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}
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//将一个srcMatter放置到另一个destMatter(必须为文件夹)下
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func (this *MatterService) MoveBatch(srcMatters []*Matter, destDirMatter *Matter) {
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if destDirMatter == nil {
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panic(result.BadRequest("destDirMatter cannot be nil."))
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}
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//操作锁
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this.userService.MatterLock(destDirMatter.UserUuid)
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defer this.userService.MatterUnlock(destDirMatter.UserUuid)
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if srcMatters == nil {
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panic(result.BadRequest("srcMatters cannot be nil."))
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}
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if !destDirMatter.Dir {
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this.PanicBadRequest("目标必须为文件夹")
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}
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//文件夹不能把自己移入到自己中，也不可以移入到自己的子文件夹下。
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destDirMatter = this.WrapDetail(destDirMatter)
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for _, srcMatter := range srcMatters {
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tmpMatter := destDirMatter
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for tmpMatter != nil {
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if srcMatter.Uuid == tmpMatter.Uuid {
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panic("文件夹不能把自己移入到自己中，也不可以移入到自己的子文件夹下。")
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}
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tmpMatter = tmpMatter.Parent
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}
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}
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for _, srcMatter := range srcMatters {
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this.innerMove(srcMatter, destDirMatter)
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}
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}
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//内部移动一个文件(提供给Copy调用)，无需关心overwrite问题。
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func (this *MatterService) innerCopy(srcMatter *Matter, destDirMatter *Matter, name string) {
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if srcMatter.Dir {
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//如果源是文件夹
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@ -275,10 +413,11 @@ func (this *MatterService) Copy(srcMatter *Matter, destDirMatter *Matter, name s
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//复制子文件或文件夹
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matters := this.matterDao.List(srcMatter.Uuid, srcMatter.UserUuid, nil)
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for _, m := range matters {
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this.Copy(m, newMatter, m.Name)
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this.innerCopy(m, newMatter, m.Name)
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}
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} else {
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//如果源是普通文件
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destAbsolutePath := destDirMatter.AbsolutePath() + "/" + name
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srcAbsolutePath := srcMatter.AbsolutePath()
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@ -298,258 +437,43 @@ func (this *MatterService) Copy(srcMatter *Matter, destDirMatter *Matter, name s
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Privacy: srcMatter.Privacy,
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Path: destDirMatter.Path + "/" + name,
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}
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newMatter = this.matterDao.Create(newMatter)
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}
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}
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//将一个srcMatter复制到另一个destMatter(必须为文件夹)下，名字叫做name
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func (this *MatterService) Copy(srcMatter *Matter, destDirMatter *Matter, name string, overwrite bool) {
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//根据一个文件夹路径，找到最后一个文件夹的uuid，如果中途出错，返回err.
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func (this *MatterService) GetDirUuid(user *User, dir string) (puuid string, dirRelativePath string) {
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if dir == "" {
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panic(`文件夹不能为空`)
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} else if dir[0:1] != "/" {
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panic(`文件夹必须以/开头`)
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} else if strings.Index(dir, "//") != -1 {
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panic(`文件夹不能出现连续的//`)
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} else if m, _ := regexp.MatchString(`[<>|*?\\]`, dir); m {
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panic(`文件夹中不能包含以下特殊符号：< > | * ? \`)
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if srcMatter == nil {
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panic(result.BadRequest("srcMatter cannot be nil."))
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}
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if dir == "/" {
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return MATTER_ROOT, ""
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}
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//操作锁
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this.userService.MatterLock(srcMatter.UserUuid)
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defer this.userService.MatterUnlock(srcMatter.UserUuid)
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if dir[len(dir)-1] == '/' {
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dir = dir[:len(dir)-1]
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}
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//递归找寻文件的上级目录uuid.
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folders := strings.Split(dir, "/")
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if len(folders) > 32 {
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panic("文件夹最多32层。")
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}
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puuid = MATTER_ROOT
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parentRelativePath := "/"
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for k, name := range folders {
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if len(name) > 200 {
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panic("每级文件夹的最大长度为200")
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}
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if k == 0 {
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continue
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}
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matter := this.matterDao.FindByUserUuidAndPuuidAndNameAndDirTrue(user.Uuid, puuid, name)
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if matter == nil {
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//创建一个文件夹。这里一般都是通过alien接口来创建的文件夹。
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matter = &Matter{
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Puuid: puuid,
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UserUuid: user.Uuid,
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Username: user.Username,
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Dir: true,
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Name: name,
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Path: parentRelativePath + "/" + name,
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}
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matter = this.matterDao.Create(matter)
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}
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puuid = matter.Uuid
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parentRelativePath = matter.Path
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}
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return puuid, parentRelativePath
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}
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//获取某个文件的详情，会把父级依次倒着装进去。如果中途出错，直接抛出异常。
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func (this *MatterService) Detail(uuid string) *Matter {
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matter := this.matterDao.CheckByUuid(uuid)
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//组装file的内容，展示其父组件。
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puuid := matter.Puuid
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tmpMatter := matter
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for puuid != MATTER_ROOT {
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pFile := this.matterDao.CheckByUuid(puuid)
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tmpMatter.Parent = pFile
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tmpMatter = pFile
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puuid = pFile.Puuid
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}
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return matter
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}
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// 从指定的url下载一个文件。参考：https://golangcode.com/download-a-file-from-a-url/
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func (this *MatterService) httpDownloadFile(filepath string, url string) (int64, error) {
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// Create the file
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out, err := os.Create(filepath)
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if err != nil {
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return 0, err
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}
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defer func() {
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e := out.Close()
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this.PanicError(e)
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}()
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// Get the data
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resp, err := http.Get(url)
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if err != nil {
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return 0, err
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}
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defer func() {
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e := resp.Body.Close()
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this.PanicError(e)
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}()
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// Write the body to file
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size, err := io.Copy(out, resp.Body)
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if err != nil {
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return 0, err
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}
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return size, nil
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}
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//去指定的url中爬文件
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func (this *MatterService) Crawl(url string, filename string, user *User, puuid string, dirRelativePath string, privacy bool) *Matter {
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//文件名不能太长。
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if len(filename) > 200 {
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panic("文件名不能超过200")
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}
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//获取文件应该存放在的物理路径的绝对路径和相对路径。
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absolutePath := GetUserFileRootDir(user.Username) + dirRelativePath + "/" + filename
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relativePath := dirRelativePath + "/" + filename
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//使用临时文件存放
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fmt.Printf("存放于%s", absolutePath)
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size, err := this.httpDownloadFile(absolutePath, url)
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this.PanicError(err)
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//判断用户自身上传大小的限制。
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if user.SizeLimit >= 0 {
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if size > user.SizeLimit {
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panic("您最大只能上传" + HumanFileSize(user.SizeLimit) + "的文件")
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}
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}
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//查找文件夹下面是否有同名文件。
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matters := this.matterDao.ListByUserUuidAndPuuidAndDirAndName(user.Uuid, puuid, false, filename)
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//如果有同名的文件，那么我们直接覆盖同名文件。
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for _, dbFile := range matters {
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this.Delete(dbFile)
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}
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//将文件信息存入数据库中。
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matter := &Matter{
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Puuid: puuid,
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UserUuid: user.Uuid,
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Username: user.Username,
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Dir: false,
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Name: filename,
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Md5: "",
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Size: size,
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Privacy: privacy,
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Path: relativePath,
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}
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matter = this.matterDao.Create(matter)
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return matter
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}
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//调整一个Matter的path值
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func (this *MatterService) adjustPath(matter *Matter, parentMatter *Matter) {
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if matter.Dir {
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//如果源是文件夹
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//首先调整好自己
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matter.Path = parentMatter.Path + "/" + matter.Name
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matter = this.matterDao.Save(matter)
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//调整该文件夹下文件的Path.
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matters := this.matterDao.List(matter.Uuid, matter.UserUuid, nil)
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for _, m := range matters {
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this.adjustPath(m, matter)
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}
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} else {
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//如果源是普通文件
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//删除该文件的所有缓存
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this.imageCacheDao.DeleteByMatterUuid(matter.Uuid)
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//调整path
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matter.Path = parentMatter.Path + "/" + matter.Name
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matter = this.matterDao.Save(matter)
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}
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}
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//将一个srcMatter放置到另一个destMatter(必须为文件夹)下
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func (this *MatterService) Move(srcMatter *Matter, destMatter *Matter) {
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if !destMatter.Dir {
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if !destDirMatter.Dir {
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this.PanicBadRequest("目标必须为文件夹")
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}
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if srcMatter.Dir {
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//如果源是文件夹
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destAbsolutePath := destMatter.AbsolutePath() + "/" + srcMatter.Name
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srcAbsolutePath := srcMatter.AbsolutePath()
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destinationPath := destDirMatter.Path + "/" + name
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this.handleOverwrite(srcMatter.UserUuid, destinationPath, overwrite)
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//物理文件一口气移动
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err := os.Rename(srcAbsolutePath, destAbsolutePath)
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this.PanicError(err)
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//修改数据库中信息
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srcMatter.Puuid = destMatter.Uuid
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srcMatter.Path = destMatter.Path + "/" + srcMatter.Name
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srcMatter = this.matterDao.Save(srcMatter)
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//调整该文件夹下文件的Path.
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matters := this.matterDao.List(srcMatter.Uuid, srcMatter.UserUuid, nil)
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for _, m := range matters {
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this.adjustPath(m, srcMatter)
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}
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} else {
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//如果源是普通文件
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destAbsolutePath := destMatter.AbsolutePath() + "/" + srcMatter.Name
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srcAbsolutePath := srcMatter.AbsolutePath()
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//物理文件进行移动
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err := os.Rename(srcAbsolutePath, destAbsolutePath)
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this.PanicError(err)
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//删除对应的缓存。
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this.imageCacheDao.DeleteByMatterUuid(srcMatter.Uuid)
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//修改数据库中信息
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srcMatter.Puuid = destMatter.Uuid
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srcMatter.Path = destMatter.Path + "/" + srcMatter.Name
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srcMatter = this.matterDao.Save(srcMatter)
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}
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return
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this.innerCopy(srcMatter, destDirMatter, name)
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}
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//将一个matter 重命名为 name
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func (this *MatterService) Rename(matter *Matter, name string, user *User) {
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if user == nil {
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this.PanicBadRequest("user cannot be nil")
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}
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//操作锁
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this.userService.MatterLock(user.Uuid)
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defer this.userService.MatterUnlock(user.Uuid)
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//验证参数。
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if name == "" {
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this.PanicBadRequest("name参数必填")
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@ -620,3 +544,168 @@ func (this *MatterService) Rename(matter *Matter, name string, user *User) {
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return
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}
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//根据一个文件夹路径，找到最后一个文件夹的uuid，如果中途出错，返回err.
|
||||
func (this *MatterService) GetDirUuid(user *User, dir string) (puuid string, dirRelativePath string) {
|
||||
|
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if dir == "" {
|
||||
panic(`文件夹不能为空`)
|
||||
} else if dir[0:1] != "/" {
|
||||
panic(`文件夹必须以/开头`)
|
||||
} else if strings.Index(dir, "//") != -1 {
|
||||
panic(`文件夹不能出现连续的//`)
|
||||
} else if m, _ := regexp.MatchString(`[<>|*?\\]`, dir); m {
|
||||
panic(`文件夹中不能包含以下特殊符号：< > | * ? \`)
|
||||
}
|
||||
|
||||
if dir == "/" {
|
||||
return MATTER_ROOT, ""
|
||||
}
|
||||
|
||||
if dir[len(dir)-1] == '/' {
|
||||
dir = dir[:len(dir)-1]
|
||||
}
|
||||
|
||||
//递归找寻文件的上级目录uuid.
|
||||
folders := strings.Split(dir, "/")
|
||||
|
||||
if len(folders) > 32 {
|
||||
panic("文件夹最多32层。")
|
||||
}
|
||||
|
||||
puuid = MATTER_ROOT
|
||||
parentRelativePath := "/"
|
||||
for k, name := range folders {
|
||||
|
||||
if len(name) > 200 {
|
||||
panic("每级文件夹的最大长度为200")
|
||||
}
|
||||
|
||||
if k == 0 {
|
||||
continue
|
||||
}
|
||||
|
||||
matter := this.matterDao.FindByUserUuidAndPuuidAndNameAndDirTrue(user.Uuid, puuid, name)
|
||||
if matter == nil {
|
||||
//创建一个文件夹。这里一般都是通过alien接口来创建的文件夹。
|
||||
matter = &Matter{
|
||||
Puuid: puuid,
|
||||
UserUuid: user.Uuid,
|
||||
Username: user.Username,
|
||||
Dir: true,
|
||||
Name: name,
|
||||
Path: parentRelativePath + "/" + name,
|
||||
}
|
||||
matter = this.matterDao.Create(matter)
|
||||
}
|
||||
|
||||
puuid = matter.Uuid
|
||||
parentRelativePath = matter.Path
|
||||
}
|
||||
|
||||
return puuid, parentRelativePath
|
||||
}
|
||||
|
||||
//包装某个matter的详情。会把父级依次倒着装进去。如果中途出错，直接抛出异常。
|
||||
func (this *MatterService) WrapDetail(matter *Matter) *Matter {
|
||||
|
||||
if matter == nil {
|
||||
this.PanicBadRequest("matter cannot be nil.")
|
||||
}
|
||||
|
||||
//组装file的内容，展示其父组件。
|
||||
puuid := matter.Puuid
|
||||
tmpMatter := matter
|
||||
for puuid != MATTER_ROOT {
|
||||
pFile := this.matterDao.CheckByUuid(puuid)
|
||||
tmpMatter.Parent = pFile
|
||||
tmpMatter = pFile
|
||||
puuid = pFile.Puuid
|
||||
}
|
||||
|
||||
return matter
|
||||
}
|
||||
|
||||
//获取某个文件的详情，会把父级依次倒着装进去。如果中途出错，直接抛出异常。
|
||||
func (this *MatterService) Detail(uuid string) *Matter {
|
||||
matter := this.matterDao.CheckByUuid(uuid)
|
||||
return this.WrapDetail(matter)
|
||||
}
|
||||
|
||||
//去指定的url中爬文件
|
||||
func (this *MatterService) Crawl(url string, filename string, user *User, puuid string, dirRelativePath string, privacy bool) *Matter {
|
||||
|
||||
//文件名不能太长。
|
||||
if len(filename) > 200 {
|
||||
panic("文件名不能超过200")
|
||||
}
|
||||
|
||||
//获取文件应该存放在的物理路径的绝对路径和相对路径。
|
||||
absolutePath := GetUserFileRootDir(user.Username) + dirRelativePath + "/" + filename
|
||||
relativePath := dirRelativePath + "/" + filename
|
||||
|
||||
//使用临时文件存放
|
||||
fmt.Printf("存放于%s", absolutePath)
|
||||
size, err := download.HttpDownloadFile(absolutePath, url)
|
||||
this.PanicError(err)
|
||||
|
||||
//判断用户自身上传大小的限制。
|
||||
if user.SizeLimit >= 0 {
|
||||
if size > user.SizeLimit {
|
||||
panic("您最大只能上传" + HumanFileSize(user.SizeLimit) + "的文件")
|
||||
}
|
||||
}
|
||||
|
||||
//查找文件夹下面是否有同名文件。
|
||||
matters := this.matterDao.ListByUserUuidAndPuuidAndDirAndName(user.Uuid, puuid, false, filename)
|
||||
//如果有同名的文件，那么我们直接覆盖同名文件。
|
||||
for _, dbFile := range matters {
|
||||
this.Delete(dbFile)
|
||||
}
|
||||
|
||||
//将文件信息存入数据库中。
|
||||
matter := &Matter{
|
||||
Puuid: puuid,
|
||||
UserUuid: user.Uuid,
|
||||
Username: user.Username,
|
||||
Dir: false,
|
||||
Name: filename,
|
||||
Md5: "",
|
||||
Size: size,
|
||||
Privacy: privacy,
|
||||
Path: relativePath,
|
||||
}
|
||||
|
||||
matter = this.matterDao.Create(matter)
|
||||
|
||||
return matter
|
||||
}
|
||||
|
||||
//调整一个Matter的path值
|
||||
func (this *MatterService) adjustPath(matter *Matter, parentMatter *Matter) {
|
||||
|
||||
if matter.Dir {
|
||||
//如果源是文件夹
|
||||
|
||||
//首先调整好自己
|
||||
matter.Path = parentMatter.Path + "/" + matter.Name
|
||||
matter = this.matterDao.Save(matter)
|
||||
|
||||
//调整该文件夹下文件的Path.
|
||||
matters := this.matterDao.List(matter.Uuid, matter.UserUuid, nil)
|
||||
for _, m := range matters {
|
||||
this.adjustPath(m, matter)
|
||||
}
|
||||
|
||||
} else {
|
||||
//如果源是普通文件
|
||||
|
||||
//删除该文件的所有缓存
|
||||
this.imageCacheDao.DeleteByMatterUuid(matter.Uuid)
|
||||
|
||||
//调整path
|
||||
matter.Path = parentMatter.Path + "/" + matter.Name
|
||||
matter = this.matterDao.Save(matter)
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user