func (fs *dsFileSys) RemoveAll(path string) error {
paths := []string{}
walkRemove := func(path string, f os.FileInfo, err error) error {
if err != nil {
// do nothing; don't break the walk
aelog.Errorf(fs.Ctx(), "Error walking %v => %v", path, err)
} else {
if f != nil { // && f.IsDir() to constrain
paths = append(paths, path)
}
}
return nil
}
err := common.Walk(fs, path, walkRemove)
if err != nil {
aelog.Errorf(fs.Ctx(), "Error removing %v => %v", path, err)
}
// Walk crawls directories first, files second.
// Intuitively removal in reverse order should always work. Or does it not?
for i := 0; i < len(paths); i++ {
iRev := len(paths) - 1 - i
err := fs.Remove(paths[iRev])
if err != nil {
aelog.Errorf(fs.Ctx(), "Error removing %v => %v", paths[iRev], err)
return err
}
aelog.Infof(fs.Ctx(), "removed path %v", paths[iRev])
}
return nil
}
func WalkDirs(fs fsi.FileSystem) (*bytes.Buffer, string) {
bb := new(bytes.Buffer)
wpf(bb, "-------filewalk----\n\n")
wnt := []int{16, 6, 3}
wnt2 := []int{13, 3, 0}
got := []int{}
cntr := 0
walkFunc := func(path string, f os.FileInfo, err error) error {
if err != nil {
wpf(bb, "error on visiting %q => %v \n", path, err)
if err == datastore.ErrNoSuchEntity || err == os.ErrNotExist {
return nil // dont break the walk on this, it's just a stale directory
}
return err // this would break the walk on any error; notably dir-index entries, that have been deleted since.
}
if strings.HasSuffix(path, "_secretdir") {
return common.SkipDir // do not delve deeper
}
if err == os.ErrInvalid {
return err // calling off the walk
}
tp := "file"
if f != nil {
if f.IsDir() {
tp = "dir "
}
}
wpf(bb, "Visited: %s %s \n", tp, path)
cntr++
// if cntr > 100 {
// return fmt.Errorf("too many walk recursions%v", cntr)
// }
return nil
}
var err error
cntr = 0
err = common.Walk(fs, rel, walkFunc)
wpf(bb, "fs.Walk() returned %v\n\n", err)
got = append(got, cntr)
cntr = 0
err = common.Walk(fs, "ch1/ch2", walkFunc)
wpf(bb, "fs.Walk() returned %v\n\n", err)
got = append(got, cntr)
cntr = 0
err = common.Walk(fs, "ch1/ch2/ch3", walkFunc)
wpf(bb, "fs.Walk() returned %v\n\n", err)
got = append(got, cntr)
testRes := ""
if spf("%+v", wnt) != spf("%+v", got) &&
spf("%+v", wnt2) != spf("%+v", got) {
testRes = spf("WalkDir: wnt %v or %v - got %v", wnt, wnt2, got)
}
return bb, testRes
}