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139 lines
2.8 KiB
139 lines
2.8 KiB
package filesys
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import (
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"context"
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"fmt"
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"os"
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"path"
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"bazil.org/fuse/fs"
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"bazil.org/fuse"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"sync"
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"github.com/chrislusf/seaweedfs/weed/glog"
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)
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type Dir struct {
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Path string
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NodeMap map[string]fs.Node
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NodeMapLock sync.Mutex
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wfs *WFS
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}
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func (dir *Dir) Attr(context context.Context, attr *fuse.Attr) error {
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attr.Mode = os.ModeDir | 0777
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return nil
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}
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func (dir *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, error) {
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dir.NodeMapLock.Lock()
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defer dir.NodeMapLock.Unlock()
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fmt.Printf("mkdir %+v\n", req)
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node := &Dir{Path: path.Join(dir.Path, req.Name), wfs: dir.wfs}
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dir.NodeMap[req.Name] = node
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return node, nil
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}
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func (dir *Dir) Lookup(ctx context.Context, name string) (node fs.Node, err error) {
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dir.NodeMapLock.Lock()
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defer dir.NodeMapLock.Unlock()
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if dir.NodeMap == nil {
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dir.NodeMap = make(map[string]fs.Node)
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}
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if node, ok := dir.NodeMap[name]; ok {
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return node, nil
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}
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var entry *filer.Entry
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err = dir.wfs.withFilerClient(func(client filer.SeaweedFilerClient) error {
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request := &filer.LookupDirectoryEntryRequest{
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Directory: dir.Path,
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Name: name,
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}
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glog.V(1).Infof("lookup directory entry: %v", request)
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resp, err := client.LookupDirectoryEntry(ctx, request)
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if err != nil {
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return err
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}
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entry = resp.Entry
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return nil
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})
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if entry != nil {
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if entry.IsDirectory {
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node = &Dir{Path: path.Join(dir.Path, name), wfs: dir.wfs}
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} else {
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node = &File{FileId: filer.FileId(entry.FileId), Name: name, wfs: dir.wfs}
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}
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dir.NodeMap[name] = node
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return node, nil
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}
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return nil, err
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}
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func (dir *Dir) ReadDirAll(ctx context.Context) (ret []fuse.Dirent, err error) {
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err = dir.wfs.withFilerClient(func(client filer.SeaweedFilerClient) error {
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request := &filer.ListEntriesRequest{
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Directory: dir.Path,
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}
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glog.V(1).Infof("read directory: %v", request)
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resp, err := client.ListEntries(ctx, request)
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if err != nil {
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return err
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}
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for _, entry := range resp.Entries {
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if entry.IsDirectory {
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dirent := fuse.Dirent{Name: entry.Name, Type: fuse.DT_Dir}
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ret = append(ret, dirent)
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} else {
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dirent := fuse.Dirent{Name: entry.Name, Type: fuse.DT_File}
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ret = append(ret, dirent)
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}
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}
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return nil
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})
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return ret, err
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}
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func (dir *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) error {
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dir.NodeMapLock.Lock()
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defer dir.NodeMapLock.Unlock()
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return dir.wfs.withFilerClient(func(client filer.SeaweedFilerClient) error {
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request := &filer.DeleteEntryRequest{
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Directory: dir.Path,
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Name: req.Name,
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IsDirectory: req.Dir,
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}
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glog.V(1).Infof("remove directory entry: %v", request)
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_, err := client.DeleteEntry(ctx, request)
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if err != nil {
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return err
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}
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delete(dir.NodeMap, req.Name)
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return nil
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})
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}
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