mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-11-29 23:05:34 +08:00
381 lines
9.2 KiB
Go
381 lines
9.2 KiB
Go
package filesys
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import (
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"context"
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"os"
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"path"
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"path/filepath"
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"time"
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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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"github.com/seaweedfs/fuse"
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"github.com/seaweedfs/fuse/fs"
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)
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type Dir struct {
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Path string
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wfs *WFS
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attributes *filer_pb.FuseAttributes
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}
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var _ = fs.Node(&Dir{})
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var _ = fs.NodeCreater(&Dir{})
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var _ = fs.NodeMkdirer(&Dir{})
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var _ = fs.NodeRequestLookuper(&Dir{})
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var _ = fs.HandleReadDirAller(&Dir{})
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var _ = fs.NodeRemover(&Dir{})
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var _ = fs.NodeRenamer(&Dir{})
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var _ = fs.NodeSetattrer(&Dir{})
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func (dir *Dir) Attr(context context.Context, attr *fuse.Attr) error {
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// https://github.com/bazil/fuse/issues/196
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attr.Valid = time.Second
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if dir.Path == dir.wfs.option.FilerMountRootPath {
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attr.Uid = dir.wfs.option.MountUid
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attr.Gid = dir.wfs.option.MountGid
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attr.Mode = dir.wfs.option.MountMode
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return nil
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}
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item := dir.wfs.listDirectoryEntriesCache.Get(dir.Path)
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if item != nil && !item.Expired() {
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entry := item.Value().(*filer_pb.Entry)
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attr.Mtime = time.Unix(entry.Attributes.Mtime, 0)
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attr.Ctime = time.Unix(entry.Attributes.Crtime, 0)
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attr.Mode = os.FileMode(entry.Attributes.FileMode)
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attr.Gid = entry.Attributes.Gid
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attr.Uid = entry.Attributes.Uid
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return nil
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}
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parent, name := filepath.Split(dir.Path)
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err := dir.wfs.withFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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request := &filer_pb.LookupDirectoryEntryRequest{
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Directory: parent,
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Name: name,
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}
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glog.V(1).Infof("read dir %s attr: %v", dir.Path, request)
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resp, err := client.LookupDirectoryEntry(context, request)
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if err != nil {
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if err == filer2.ErrNotFound {
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return nil
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}
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glog.V(0).Infof("read dir %s attr %v: %v", dir.Path, request, err)
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return err
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}
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if resp.Entry != nil {
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dir.attributes = resp.Entry.Attributes
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}
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dir.wfs.listDirectoryEntriesCache.Set(dir.Path, resp.Entry, dir.wfs.option.EntryCacheTtl)
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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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// glog.V(1).Infof("dir %s: %v", dir.Path, attributes)
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// glog.V(1).Infof("dir %s permission: %v", dir.Path, os.FileMode(attributes.FileMode))
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attr.Mode = os.FileMode(dir.attributes.FileMode) | os.ModeDir
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attr.Mtime = time.Unix(dir.attributes.Mtime, 0)
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attr.Ctime = time.Unix(dir.attributes.Crtime, 0)
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attr.Gid = dir.attributes.Gid
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attr.Uid = dir.attributes.Uid
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return nil
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}
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func (dir *Dir) newFile(name string, entry *filer_pb.Entry) *File {
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return &File{
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Name: name,
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dir: dir,
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wfs: dir.wfs,
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entry: entry,
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entryViewCache: nil,
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}
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}
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func (dir *Dir) Create(ctx context.Context, req *fuse.CreateRequest,
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resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
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request := &filer_pb.CreateEntryRequest{
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Directory: dir.Path,
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Entry: &filer_pb.Entry{
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Name: req.Name,
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IsDirectory: req.Mode&os.ModeDir > 0,
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Attributes: &filer_pb.FuseAttributes{
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Mtime: time.Now().Unix(),
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Crtime: time.Now().Unix(),
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FileMode: uint32(req.Mode),
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Uid: req.Uid,
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Gid: req.Gid,
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Collection: dir.wfs.option.Collection,
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Replication: dir.wfs.option.Replication,
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TtlSec: dir.wfs.option.TtlSec,
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},
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},
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}
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glog.V(1).Infof("create: %v", request)
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if request.Entry.IsDirectory {
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if err := dir.wfs.withFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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if _, err := client.CreateEntry(ctx, request); err != nil {
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glog.V(0).Infof("create %s/%s: %v", dir.Path, req.Name, err)
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return fuse.EIO
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}
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return nil
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}); err != nil {
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return nil, nil, err
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}
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}
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file := dir.newFile(req.Name, request.Entry)
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if !request.Entry.IsDirectory {
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file.isOpen = true
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}
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fh := dir.wfs.AcquireHandle(file, req.Uid, req.Gid)
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fh.dirtyMetadata = true
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return file, fh, 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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err := dir.wfs.withFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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request := &filer_pb.CreateEntryRequest{
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Directory: dir.Path,
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Entry: &filer_pb.Entry{
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Name: req.Name,
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IsDirectory: true,
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Attributes: &filer_pb.FuseAttributes{
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Mtime: time.Now().Unix(),
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Crtime: time.Now().Unix(),
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FileMode: uint32(req.Mode),
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Uid: req.Uid,
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Gid: req.Gid,
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},
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},
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}
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glog.V(1).Infof("mkdir: %v", request)
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if _, err := client.CreateEntry(ctx, request); err != nil {
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glog.V(0).Infof("mkdir %s/%s: %v", dir.Path, req.Name, err)
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return fuse.EIO
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}
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return nil
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})
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if err == nil {
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node := &Dir{Path: path.Join(dir.Path, req.Name), wfs: dir.wfs}
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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) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (node fs.Node, err error) {
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var entry *filer_pb.Entry
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item := dir.wfs.listDirectoryEntriesCache.Get(path.Join(dir.Path, req.Name))
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if item != nil && !item.Expired() {
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entry = item.Value().(*filer_pb.Entry)
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}
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if entry == nil {
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err = dir.wfs.withFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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request := &filer_pb.LookupDirectoryEntryRequest{
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Directory: dir.Path,
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Name: req.Name,
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}
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glog.V(4).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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// glog.V(0).Infof("lookup %s/%s: %v", dir.Path, name, err)
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return fuse.ENOENT
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}
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entry = resp.Entry
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dir.wfs.listDirectoryEntriesCache.Set(path.Join(dir.Path, entry.Name), entry, dir.wfs.option.EntryCacheTtl)
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return nil
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})
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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, req.Name), wfs: dir.wfs, attributes: entry.Attributes}
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} else {
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node = dir.newFile(req.Name, entry)
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}
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resp.EntryValid = time.Duration(0)
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resp.Attr.Mtime = time.Unix(entry.Attributes.Mtime, 0)
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resp.Attr.Ctime = time.Unix(entry.Attributes.Crtime, 0)
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resp.Attr.Mode = os.FileMode(entry.Attributes.FileMode)
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resp.Attr.Gid = entry.Attributes.Gid
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resp.Attr.Uid = entry.Attributes.Uid
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return node, nil
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}
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return nil, fuse.ENOENT
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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_pb.SeaweedFilerClient) error {
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paginationLimit := 1024
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remaining := dir.wfs.option.DirListingLimit
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lastEntryName := ""
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for remaining >= 0 {
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request := &filer_pb.ListEntriesRequest{
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Directory: dir.Path,
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StartFromFileName: lastEntryName,
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Limit: uint32(paginationLimit),
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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", dir.Path, err)
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return fuse.EIO
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}
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cacheTtl := estimatedCacheTtl(len(resp.Entries))
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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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dir.wfs.listDirectoryEntriesCache.Set(path.Join(dir.Path, entry.Name), entry, cacheTtl)
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lastEntryName = entry.Name
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}
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remaining -= len(resp.Entries)
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if len(resp.Entries) < paginationLimit {
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break
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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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return dir.wfs.withFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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request := &filer_pb.DeleteEntryRequest{
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Directory: dir.Path,
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Name: req.Name,
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IsDeleteData: true,
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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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glog.V(0).Infof("remove %s/%s: %v", dir.Path, req.Name, err)
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return fuse.EIO
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}
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dir.wfs.listDirectoryEntriesCache.Delete(path.Join(dir.Path, req.Name))
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return nil
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})
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}
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func (dir *Dir) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
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glog.V(3).Infof("%v dir setattr %+v, fh=%d", dir.Path, req, req.Handle)
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if req.Valid.Mode() {
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dir.attributes.FileMode = uint32(req.Mode)
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}
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if req.Valid.Uid() {
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dir.attributes.Uid = req.Uid
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}
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if req.Valid.Gid() {
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dir.attributes.Gid = req.Gid
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}
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if req.Valid.Mtime() {
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dir.attributes.Mtime = req.Mtime.Unix()
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}
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parentDir, name := filer2.FullPath(dir.Path).DirAndName()
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return dir.wfs.withFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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request := &filer_pb.UpdateEntryRequest{
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Directory: parentDir,
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Entry: &filer_pb.Entry{
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Name: name,
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Attributes: dir.attributes,
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},
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}
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glog.V(1).Infof("set attr directory entry: %v", request)
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_, err := client.UpdateEntry(ctx, request)
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if err != nil {
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glog.V(0).Infof("UpdateEntry %s: %v", dir.Path, err)
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return fuse.EIO
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}
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dir.wfs.listDirectoryEntriesCache.Delete(dir.Path)
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return nil
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})
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}
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func estimatedCacheTtl(numEntries int) time.Duration {
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if numEntries < 100 {
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// 30 ms per entry
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return 3 * time.Second
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}
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if numEntries < 1000 {
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// 10 ms per entry
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return 10 * time.Second
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}
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if numEntries < 10000 {
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// 10 ms per entry
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return 100 * time.Second
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}
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// 2 ms per entry
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return time.Duration(numEntries*2) * time.Millisecond
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}
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