package filesys import ( "context" "os" "sort" "time" "github.com/chrislusf/seaweedfs/weed/filer2" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/seaweedfs/fuse" "github.com/seaweedfs/fuse/fs" ) const blockSize = 512 var _ = fs.Node(&File{}) var _ = fs.NodeOpener(&File{}) var _ = fs.NodeFsyncer(&File{}) var _ = fs.NodeSetattrer(&File{}) var _ = fs.NodeGetxattrer(&File{}) var _ = fs.NodeSetxattrer(&File{}) var _ = fs.NodeRemovexattrer(&File{}) var _ = fs.NodeListxattrer(&File{}) var _ = fs.NodeForgetter(&File{}) type File struct { Name string dir *Dir wfs *WFS entry *filer_pb.Entry entryViewCache []filer2.VisibleInterval isOpen bool } func (file *File) fullpath() filer2.FullPath { return filer2.NewFullPath(file.dir.Path, file.Name) } func (file *File) Attr(ctx context.Context, attr *fuse.Attr) error { glog.V(4).Infof("file Attr %s, open:%v, existing attr: %+v", file.fullpath(), file.isOpen, attr) if !file.isOpen { if err := file.maybeLoadEntry(ctx); err != nil { return err } } attr.Inode = file.fullpath().AsInode() attr.Valid = time.Second attr.Mode = os.FileMode(file.entry.Attributes.FileMode) attr.Size = filer2.TotalSize(file.entry.Chunks) if file.isOpen { attr.Size = file.entry.Attributes.FileSize } attr.Crtime = time.Unix(file.entry.Attributes.Crtime, 0) attr.Mtime = time.Unix(file.entry.Attributes.Mtime, 0) attr.Gid = file.entry.Attributes.Gid attr.Uid = file.entry.Attributes.Uid attr.Blocks = attr.Size/blockSize + 1 attr.BlockSize = uint32(file.wfs.option.ChunkSizeLimit) return nil } func (file *File) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error { glog.V(4).Infof("file Getxattr %s", file.fullpath()) if err := file.maybeLoadEntry(ctx); err != nil { return err } return getxattr(file.entry, req, resp) } func (file *File) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.OpenResponse) (fs.Handle, error) { glog.V(4).Infof("file %v open %+v", file.fullpath(), req) file.isOpen = true handle := file.wfs.AcquireHandle(file, req.Uid, req.Gid) resp.Handle = fuse.HandleID(handle.handle) glog.V(3).Infof("%v file open handle id = %d", file.fullpath(), handle.handle) return handle, nil } func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error { glog.V(3).Infof("%v file setattr %+v, old:%+v", file.fullpath(), req, file.entry.Attributes) if err := file.maybeLoadEntry(ctx); err != nil { return err } if req.Valid.Size() { glog.V(3).Infof("%v file setattr set size=%v", file.fullpath(), req.Size) if req.Size < filer2.TotalSize(file.entry.Chunks) { // fmt.Printf("truncate %v \n", fullPath) var chunks []*filer_pb.FileChunk for _, chunk := range file.entry.Chunks { if uint64(chunk.Offset)+chunk.Size > req.Size { chunk.Size = req.Size - uint64(chunk.Offset) } if chunk.Size > 0 { chunks = append(chunks, chunk) } } file.entry.Chunks = chunks file.entryViewCache = nil } file.entry.Attributes.FileSize = req.Size } if req.Valid.Mode() { file.entry.Attributes.FileMode = uint32(req.Mode) } if req.Valid.Uid() { file.entry.Attributes.Uid = req.Uid } if req.Valid.Gid() { file.entry.Attributes.Gid = req.Gid } if req.Valid.Crtime() { file.entry.Attributes.Crtime = req.Crtime.Unix() } if req.Valid.Mtime() { file.entry.Attributes.Mtime = req.Mtime.Unix() } if file.isOpen { return nil } file.wfs.cacheDelete(file.fullpath()) return file.saveEntry(ctx) } func (file *File) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error { glog.V(4).Infof("file Setxattr %s: %s", file.fullpath(), req.Name) if err := file.maybeLoadEntry(ctx); err != nil { return err } if err := setxattr(file.entry, req); err != nil { return err } file.wfs.cacheDelete(file.fullpath()) return file.saveEntry(ctx) } func (file *File) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error { glog.V(4).Infof("file Removexattr %s: %s", file.fullpath(), req.Name) if err := file.maybeLoadEntry(ctx); err != nil { return err } if err := removexattr(file.entry, req); err != nil { return err } file.wfs.cacheDelete(file.fullpath()) return file.saveEntry(ctx) } func (file *File) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error { glog.V(4).Infof("file Listxattr %s", file.fullpath()) if err := file.maybeLoadEntry(ctx); err != nil { return err } if err := listxattr(file.entry, req, resp); err != nil { return err } return nil } func (file *File) Fsync(ctx context.Context, req *fuse.FsyncRequest) error { // fsync works at OS level // write the file chunks to the filerGrpcAddress glog.V(3).Infof("%s/%s fsync file %+v", file.dir.Path, file.Name, req) return nil } func (file *File) Forget() { glog.V(3).Infof("Forget file %s/%s", file.dir.Path, file.Name) file.wfs.forgetNode(filer2.NewFullPath(file.dir.Path, file.Name)) } func (file *File) maybeLoadEntry(ctx context.Context) error { if file.entry == nil || !file.isOpen { entry, err := file.wfs.maybeLoadEntry(ctx, file.dir.Path, file.Name) if err != nil { return err } if entry != nil { file.setEntry(entry) } } return nil } func (file *File) addChunk(chunk *filer_pb.FileChunk) { if chunk != nil { file.addChunks([]*filer_pb.FileChunk{chunk}) } } func (file *File) addChunks(chunks []*filer_pb.FileChunk) { sort.Slice(chunks, func(i, j int) bool { return chunks[i].Mtime < chunks[j].Mtime }) var newVisibles []filer2.VisibleInterval for _, chunk := range chunks { newVisibles = filer2.MergeIntoVisibles(file.entryViewCache, newVisibles, chunk) t := file.entryViewCache[:0] file.entryViewCache = newVisibles newVisibles = t } glog.V(3).Infof("%s existing %d chunks adds %d more", file.fullpath(), len(file.entry.Chunks), len(chunks)) file.entry.Chunks = append(file.entry.Chunks, chunks...) } func (file *File) setEntry(entry *filer_pb.Entry) { file.entry = entry file.entryViewCache = filer2.NonOverlappingVisibleIntervals(file.entry.Chunks) } func (file *File) saveEntry(ctx context.Context) error { return file.wfs.WithFilerClient(ctx, func(client filer_pb.SeaweedFilerClient) error { request := &filer_pb.UpdateEntryRequest{ Directory: file.dir.Path, Entry: file.entry, } glog.V(1).Infof("save file entry: %v", request) _, err := client.UpdateEntry(ctx, request) if err != nil { glog.V(0).Infof("UpdateEntry file %s/%s: %v", file.dir.Path, file.Name, err) return fuse.EIO } return nil }) }