mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
136 lines
3.1 KiB
Go
136 lines
3.1 KiB
Go
package filesys
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import (
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"bazil.org/fuse"
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"bazil.org/fuse/fs"
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"context"
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"github.com/chrislusf/seaweedfs/weed/filer2"
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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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"os"
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"path/filepath"
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"time"
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)
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var _ = fs.Node(&File{})
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var _ = fs.NodeOpener(&File{})
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var _ = fs.NodeFsyncer(&File{})
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var _ = fs.NodeSetattrer(&File{})
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type File struct {
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Chunks []*filer_pb.FileChunk
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Name string
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dir *Dir
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wfs *WFS
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attributes *filer_pb.FuseAttributes
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isOpen bool
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}
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func (file *File) Attr(context context.Context, attr *fuse.Attr) error {
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fullPath := filepath.Join(file.dir.Path, file.Name)
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if file.attributes == nil || !file.isOpen {
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item := file.wfs.listDirectoryEntriesCache.Get(fullPath)
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if item != nil {
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entry := item.Value().(*filer_pb.Entry)
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file.Chunks = entry.Chunks
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file.attributes = entry.Attributes
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glog.V(1).Infof("file attr read cached %v attributes", file.Name)
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} else {
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err := file.wfs.withFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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request := &filer_pb.GetEntryAttributesRequest{
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Name: file.Name,
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ParentDir: file.dir.Path,
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}
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resp, err := client.GetEntryAttributes(context, request)
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if err != nil {
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glog.V(0).Infof("file attr read file %v: %v", request, err)
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return err
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}
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file.attributes = resp.Attributes
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file.Chunks = resp.Chunks
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glog.V(1).Infof("file attr %v %+v: %d", fullPath, file.attributes, filer2.TotalSize(file.Chunks))
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return nil
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})
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if err != nil {
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return err
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}
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}
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}
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attr.Mode = os.FileMode(file.attributes.FileMode)
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attr.Size = filer2.TotalSize(file.Chunks)
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attr.Mtime = time.Unix(file.attributes.Mtime, 0)
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attr.Gid = file.attributes.Gid
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attr.Uid = file.attributes.Uid
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return nil
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}
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func (file *File) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.OpenResponse) (fs.Handle, error) {
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fullPath := filepath.Join(file.dir.Path, file.Name)
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glog.V(3).Infof("%v file open %+v", fullPath, req)
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file.isOpen = true
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return &FileHandle{
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f: file,
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RequestId: req.Header.ID,
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NodeId: req.Header.Node,
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Uid: req.Uid,
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Gid: req.Gid,
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}, nil
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}
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func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
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fullPath := filepath.Join(file.dir.Path, file.Name)
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glog.V(3).Infof("%v file setattr %+v", fullPath, req)
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if req.Valid.Size() {
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glog.V(3).Infof("%v file setattr set size=%v", fullPath, req.Size)
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if req.Size == 0 {
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// fmt.Printf("truncate %v \n", fullPath)
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file.Chunks = nil
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}
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file.attributes.FileSize = req.Size
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}
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if req.Valid.Mode() {
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file.attributes.FileMode = uint32(req.Mode)
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}
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if req.Valid.Uid() {
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file.attributes.Uid = req.Uid
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}
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if req.Valid.Gid() {
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file.attributes.Gid = req.Gid
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}
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if req.Valid.Mtime() {
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file.attributes.Mtime = req.Mtime.Unix()
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}
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return nil
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}
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func (file *File) Fsync(ctx context.Context, req *fuse.FsyncRequest) error {
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// fsync works at OS level
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// write the file chunks to the filer
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glog.V(3).Infof("%s/%s fsync file %+v", file.dir.Path, file.Name, req)
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return nil
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}
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