mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-07-01 06:40:45 +02:00
120 lines
2.9 KiB
Go
120 lines
2.9 KiB
Go
package filesys
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import (
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"context"
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"github.com/seaweedfs/fuse"
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"github.com/seaweedfs/fuse/fs"
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"math"
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"path/filepath"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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)
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func (dir *Dir) Rename(ctx context.Context, req *fuse.RenameRequest, newDirectory fs.Node) error {
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newDir := newDirectory.(*Dir)
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return dir.wfs.withFilerClient(ctx, func(client filer_pb.SeaweedFilerClient) error {
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// find existing entry
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request := &filer_pb.LookupDirectoryEntryRequest{
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Directory: dir.Path,
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Name: req.OldName,
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}
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glog.V(4).Infof("find existing 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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glog.V(3).Infof("renaming find %s/%s: %v", dir.Path, req.OldName, err)
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return fuse.ENOENT
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}
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entry := resp.Entry
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glog.V(4).Infof("found existing directory entry resp: %+v", resp)
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return moveEntry(ctx, client, dir.Path, entry, newDir.Path, req.NewName)
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})
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}
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func moveEntry(ctx context.Context, client filer_pb.SeaweedFilerClient, oldParent string, entry *filer_pb.Entry, newParent, newName string) error {
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if entry.IsDirectory {
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currentDirPath := filepath.ToSlash(filepath.Join(oldParent, entry.Name))
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lastFileName := ""
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includeLastFile := false
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limit := math.MaxInt32
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for limit > 0 {
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request := &filer_pb.ListEntriesRequest{
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Directory: currentDirPath,
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StartFromFileName: lastFileName,
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InclusiveStartFrom: includeLastFile,
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Limit: 1024,
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}
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glog.V(4).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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glog.V(0).Infof("list %s: %v", oldParent, err)
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return fuse.EIO
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}
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if len(resp.Entries) == 0 {
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break
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}
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for _, item := range resp.Entries {
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lastFileName = item.Name
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err := moveEntry(ctx, client, currentDirPath, item, filepath.ToSlash(filepath.Join(newParent, newName)), item.Name)
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if err != nil {
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return err
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}
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limit--
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}
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if len(resp.Entries) < 1024 {
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break
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}
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}
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}
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// add to new directory
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{
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request := &filer_pb.CreateEntryRequest{
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Directory: newParent,
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Entry: &filer_pb.Entry{
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Name: newName,
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IsDirectory: entry.IsDirectory,
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Attributes: entry.Attributes,
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Chunks: entry.Chunks,
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},
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}
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glog.V(1).Infof("create new entry: %v", request)
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if _, err := client.CreateEntry(ctx, request); err != nil {
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glog.V(0).Infof("renaming create %s/%s: %v", newParent, newName, err)
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return fuse.EIO
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}
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}
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// delete old entry
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{
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request := &filer_pb.DeleteEntryRequest{
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Directory: oldParent,
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Name: entry.Name,
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IsDeleteData: false,
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}
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glog.V(1).Infof("remove old entry: %v", request)
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_, err := client.DeleteEntry(ctx, request)
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if err != nil {
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glog.V(0).Infof("renaming delete %s/%s: %v", oldParent, entry.Name, err)
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return fuse.EIO
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}
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}
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return nil
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}
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