mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
85 lines
2 KiB
Go
85 lines
2 KiB
Go
package mount
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import (
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"context"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/filesys/meta_cache"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/util"
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"github.com/hanwen/go-fuse/v2/fs"
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"github.com/hanwen/go-fuse/v2/fuse"
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"math"
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"os"
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"syscall"
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)
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var _ = fs.NodeReaddirer(&Directory{})
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var _ = fs.NodeGetattrer(&Directory{})
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func (dir *Directory) Getattr(ctx context.Context, fh fs.FileHandle, out *fuse.AttrOut) syscall.Errno {
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out.Mode = 0755
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return 0
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}
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func (dir *Directory) Readdir(ctx context.Context) (fs.DirStream, syscall.Errno) {
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dirPath := util.FullPath(dir.FullPath())
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glog.V(4).Infof("Readdir %s", dirPath)
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sourceChan := make(chan fuse.DirEntry, 64)
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stream := newDirectoryListStream(sourceChan)
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processEachEntryFn := func(entry *filer.Entry, isLast bool) {
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sourceChan <- fuse.DirEntry{
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Mode: uint32(entry.Mode),
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Name: entry.Name(),
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Ino: dirPath.Child(entry.Name()).AsInode(os.ModeDir),
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}
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}
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if err := meta_cache.EnsureVisited(dir.wfs.metaCache, dir.wfs, dirPath); err != nil {
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glog.Errorf("dir ReadDirAll %s: %v", dirPath, err)
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return nil, fs.ToErrno(os.ErrInvalid)
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}
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go func() {
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dir.wfs.metaCache.ListDirectoryEntries(context.Background(), dirPath, "", false, int64(math.MaxInt32), func(entry *filer.Entry) bool {
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processEachEntryFn(entry, false)
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return true
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})
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close(sourceChan)
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}()
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return stream, fs.OK
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}
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var _ = fs.DirStream(&DirectoryListStream{})
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type DirectoryListStream struct {
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next fuse.DirEntry
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sourceChan chan fuse.DirEntry
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isStarted bool
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hasNext bool
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}
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func newDirectoryListStream(ch chan fuse.DirEntry) *DirectoryListStream {
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return &DirectoryListStream{
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sourceChan: ch,
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}
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}
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func (i *DirectoryListStream) HasNext() bool {
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if !i.isStarted {
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i.next, i.hasNext = <-i.sourceChan
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i.isStarted = true
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}
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return i.hasNext
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}
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func (i *DirectoryListStream) Next() (fuse.DirEntry, syscall.Errno) {
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t := i.next
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i.next, i.hasNext = <-i.sourceChan
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return t, fs.OK
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}
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func (i *DirectoryListStream) Close() {
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}
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