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better support FUSE Lookup()

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This commit is contained in:
Chris Lu
2018-05-05 02:01:50 -07:00
parent 050ab19264
commit fffb14bc87
12 changed files with 117 additions and 76 deletions
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10
weed/filer/embedded_filer/files_in_leveldb.go
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@@ -28,7 +28,7 @@ func NewFileListInLevelDb(dir string) (fl *FileListInLevelDb, err error) {
return
}
func genKey(dirId filer.DirectoryId, fileName string) []byte {
func genKey(dirId DirectoryId, fileName string) []byte {
ret := make([]byte, 0, 4+len(fileName))
for i := 3; i >= 0; i-- {
ret = append(ret, byte(dirId>>(uint(i)*8)))
@@ -37,11 +37,11 @@ func genKey(dirId filer.DirectoryId, fileName string) []byte {
return ret
}
func (fl *FileListInLevelDb) CreateFile(dirId filer.DirectoryId, fileName string, fid string) (err error) {
func (fl *FileListInLevelDb) CreateFile(dirId DirectoryId, fileName string, fid string) (err error) {
glog.V(4).Infoln("directory", dirId, "fileName", fileName, "fid", fid)
return fl.db.Put(genKey(dirId, fileName), []byte(fid), nil)
}
func (fl *FileListInLevelDb) DeleteFile(dirId filer.DirectoryId, fileName string) (fid string, err error) {
func (fl *FileListInLevelDb) DeleteFile(dirId DirectoryId, fileName string) (fid string, err error) {
if fid, err = fl.FindFile(dirId, fileName); err != nil {
if err == leveldb.ErrNotFound {
return "", nil
@@ -51,7 +51,7 @@ func (fl *FileListInLevelDb) DeleteFile(dirId filer.DirectoryId, fileName string
err = fl.db.Delete(genKey(dirId, fileName), nil)
return fid, err
}
func (fl *FileListInLevelDb) FindFile(dirId filer.DirectoryId, fileName string) (fid string, err error) {
func (fl *FileListInLevelDb) FindFile(dirId DirectoryId, fileName string) (fid string, err error) {
data, e := fl.db.Get(genKey(dirId, fileName), nil)
if e == leveldb.ErrNotFound {
return "", filer.ErrNotFound
@@ -60,7 +60,7 @@ func (fl *FileListInLevelDb) FindFile(dirId filer.DirectoryId, fileName string)
}
return string(data), nil
}
func (fl *FileListInLevelDb) ListFiles(dirId filer.DirectoryId, lastFileName string, limit int) (files []filer.FileEntry) {
func (fl *FileListInLevelDb) ListFiles(dirId DirectoryId, lastFileName string, limit int) (files []filer.FileEntry) {
glog.V(4).Infoln("directory", dirId, "lastFileName", lastFileName, "limit", limit)
dirKey := genKey(dirId, "")
iter := fl.db.NewIterator(&util.Range{Start: genKey(dirId, lastFileName)}, nil)