mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-05-02 01:27:55 +02:00
556 lines
14 KiB
Go
556 lines
14 KiB
Go
package filesys
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import (
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"bytes"
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"context"
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"math"
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"os"
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"strings"
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"time"
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"github.com/seaweedfs/fuse"
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"github.com/seaweedfs/fuse/fs"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/filesys/meta_cache"
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"github.com/chrislusf/seaweedfs/weed/util/log"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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type Dir struct {
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name string
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wfs *WFS
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entry *filer_pb.Entry
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parent *Dir
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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.NodeMknoder(&Dir{})
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var _ = fs.NodeMkdirer(&Dir{})
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var _ = fs.NodeFsyncer(&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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var _ = fs.NodeGetxattrer(&Dir{})
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var _ = fs.NodeSetxattrer(&Dir{})
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var _ = fs.NodeRemovexattrer(&Dir{})
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var _ = fs.NodeListxattrer(&Dir{})
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var _ = fs.NodeForgetter(&Dir{})
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func (dir *Dir) Attr(ctx 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.FullPath() == dir.wfs.option.FilerMountRootPath {
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dir.setRootDirAttributes(attr)
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log.Tracef("root dir Attr %s, attr: %+v", dir.FullPath(), attr)
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return nil
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}
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if err := dir.maybeLoadEntry(); err != nil {
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log.Tracef("dir Attr %s,err: %+v", dir.FullPath(), err)
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return err
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}
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attr.Inode = util.FullPath(dir.FullPath()).AsInode()
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attr.Mode = os.FileMode(dir.entry.Attributes.FileMode) | os.ModeDir
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attr.Mtime = time.Unix(dir.entry.Attributes.Mtime, 0)
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attr.Crtime = time.Unix(dir.entry.Attributes.Crtime, 0)
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attr.Gid = dir.entry.Attributes.Gid
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attr.Uid = dir.entry.Attributes.Uid
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log.Tracef("dir Attr %s, attr: %+v", dir.FullPath(), attr)
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return nil
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}
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func (dir *Dir) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error {
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log.Tracef("dir Getxattr %s", dir.FullPath())
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if err := dir.maybeLoadEntry(); err != nil {
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return err
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}
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return getxattr(dir.entry, req, resp)
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}
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func (dir *Dir) setRootDirAttributes(attr *fuse.Attr) {
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attr.Inode = 1 // filer2.FullPath(dir.Path).AsInode()
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attr.Valid = time.Hour
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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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attr.Crtime = dir.wfs.option.MountCtime
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attr.Ctime = dir.wfs.option.MountCtime
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attr.Mtime = dir.wfs.option.MountMtime
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attr.Atime = dir.wfs.option.MountMtime
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attr.BlockSize = 1024 * 1024
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}
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func (dir *Dir) 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 filerGrpcAddress
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log.Tracef("dir %s fsync %+v", dir.FullPath(), req)
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return nil
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}
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func (dir *Dir) newFile(name string, entry *filer_pb.Entry) fs.Node {
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f := dir.wfs.fsNodeCache.EnsureFsNode(util.NewFullPath(dir.FullPath(), name), func() fs.Node {
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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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f.(*File).dir = dir // in case dir node was created later
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return f
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}
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func (dir *Dir) newDirectory(fullpath util.FullPath, entry *filer_pb.Entry) fs.Node {
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d := dir.wfs.fsNodeCache.EnsureFsNode(fullpath, func() fs.Node {
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return &Dir{name: entry.Name, wfs: dir.wfs, entry: entry, parent: dir}
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})
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d.(*Dir).parent = dir // in case dir node was created later
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return d
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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.FullPath(),
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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 &^ dir.wfs.option.Umask),
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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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OExcl: req.Flags&fuse.OpenExclusive != 0,
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Signatures: []int32{dir.wfs.signature},
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}
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log.Debugf("create %s/%s: %v", dir.FullPath(), req.Name, req.Flags)
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if err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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dir.wfs.mapPbIdFromLocalToFiler(request.Entry)
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defer dir.wfs.mapPbIdFromFilerToLocal(request.Entry)
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if err := filer_pb.CreateEntry(client, request); err != nil {
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if strings.Contains(err.Error(), "EEXIST") {
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return fuse.EEXIST
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}
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log.Infof("create %s/%s: %v", dir.FullPath(), req.Name, err)
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return fuse.EIO
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}
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dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
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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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var node fs.Node
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if request.Entry.IsDirectory {
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node = dir.newDirectory(util.NewFullPath(dir.FullPath(), req.Name), request.Entry)
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return node, nil, nil
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}
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node = dir.newFile(req.Name, request.Entry)
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file := node.(*File)
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fh := dir.wfs.AcquireHandle(file, req.Uid, req.Gid)
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return file, fh, nil
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}
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func (dir *Dir) Mknod(ctx context.Context, req *fuse.MknodRequest) (fs.Node, error) {
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if req.Mode&os.ModeNamedPipe != 0 {
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log.Debugf("mknod named pipe %s", req.String())
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return nil, fuse.ENOSYS
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}
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if req.Mode&req.Mode&os.ModeSocket != 0 {
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log.Debugf("mknod socket %s", req.String())
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return nil, fuse.ENOSYS
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}
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// not going to support mknod for normal files either
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log.Debugf("mknod %s", req.String())
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return nil, fuse.ENOSYS
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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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log.Tracef("mkdir %s: %s", dir.FullPath(), req.Name)
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newEntry := &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 &^ dir.wfs.option.Umask),
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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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err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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dir.wfs.mapPbIdFromLocalToFiler(newEntry)
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defer dir.wfs.mapPbIdFromFilerToLocal(newEntry)
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request := &filer_pb.CreateEntryRequest{
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Directory: dir.FullPath(),
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Entry: newEntry,
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Signatures: []int32{dir.wfs.signature},
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}
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log.Debugf("mkdir: %v", request)
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if err := filer_pb.CreateEntry(client, request); err != nil {
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log.Infof("mkdir %s/%s: %v", dir.FullPath(), req.Name, err)
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return err
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}
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dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
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return nil
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})
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if err == nil {
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node := dir.newDirectory(util.NewFullPath(dir.FullPath(), req.Name), newEntry)
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return node, nil
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}
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log.Infof("mkdir %s/%s: %v", dir.FullPath(), req.Name, err)
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return nil, fuse.EIO
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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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log.Tracef("dir Lookup %s: %s by %s", dir.FullPath(), req.Name, req.Header.String())
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fullFilePath := util.NewFullPath(dir.FullPath(), req.Name)
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dirPath := util.FullPath(dir.FullPath())
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visitErr := meta_cache.EnsureVisited(dir.wfs.metaCache, dir.wfs, dirPath)
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if visitErr != nil {
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log.Errorf("dir Lookup %s: %v", dirPath, visitErr)
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return nil, fuse.EIO
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}
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cachedEntry, cacheErr := dir.wfs.metaCache.FindEntry(context.Background(), fullFilePath)
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if cacheErr == filer_pb.ErrNotFound {
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return nil, fuse.ENOENT
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}
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entry := cachedEntry.ToProtoEntry()
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if entry == nil {
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// log.Tracef("dir Lookup cache miss %s", fullFilePath)
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entry, err = filer_pb.GetEntry(dir.wfs, fullFilePath)
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if err != nil {
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log.Debugf("dir GetEntry %s: %v", fullFilePath, err)
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return nil, fuse.ENOENT
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}
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} else {
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log.Tracef("dir Lookup cache hit %s", fullFilePath)
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}
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if entry != nil {
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if entry.IsDirectory {
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node = dir.newDirectory(fullFilePath, entry)
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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.Second
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resp.Attr.Inode = fullFilePath.AsInode()
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resp.Attr.Valid = time.Second
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resp.Attr.Mtime = time.Unix(entry.Attributes.Mtime, 0)
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resp.Attr.Crtime = 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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if entry.HardLinkCounter > 0 {
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resp.Attr.Nlink = uint32(entry.HardLinkCounter)
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}
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return node, nil
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}
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log.Tracef("not found dir GetEntry %s: %v", fullFilePath, err)
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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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log.Tracef("dir ReadDirAll %s", dir.FullPath())
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processEachEntryFn := func(entry *filer_pb.Entry, isLast bool) error {
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fullpath := util.NewFullPath(dir.FullPath(), entry.Name)
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inode := fullpath.AsInode()
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if entry.IsDirectory {
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dirent := fuse.Dirent{Inode: inode, 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{Inode: inode, Name: entry.Name, Type: fuse.DT_File}
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ret = append(ret, dirent)
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}
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return nil
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}
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dirPath := util.FullPath(dir.FullPath())
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if err = meta_cache.EnsureVisited(dir.wfs.metaCache, dir.wfs, dirPath); err != nil {
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log.Errorf("dir ReadDirAll %s: %v", dirPath, err)
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return nil, fuse.EIO
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}
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listedEntries, listErr := dir.wfs.metaCache.ListDirectoryEntries(context.Background(), util.FullPath(dir.FullPath()), "", false, int(math.MaxInt32))
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if listErr != nil {
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log.Errorf("list meta cache: %v", listErr)
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return nil, fuse.EIO
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}
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for _, cachedEntry := range listedEntries {
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processEachEntryFn(cachedEntry.ToProtoEntry(), false)
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}
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return
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}
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func (dir *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) error {
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if !req.Dir {
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return dir.removeOneFile(req)
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}
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return dir.removeFolder(req)
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}
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func (dir *Dir) removeOneFile(req *fuse.RemoveRequest) error {
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filePath := util.NewFullPath(dir.FullPath(), req.Name)
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entry, err := filer_pb.GetEntry(dir.wfs, filePath)
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if err != nil {
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return err
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}
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if entry == nil {
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return nil
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}
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// first, ensure the filer store can correctly delete
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log.Tracef("remove file: %v", req)
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isDeleteData := entry.HardLinkCounter <= 1
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err = filer_pb.Remove(dir.wfs, dir.FullPath(), req.Name, isDeleteData, false, false, false, []int32{dir.wfs.signature})
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if err != nil {
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log.Tracef("not found remove file %s/%s: %v", dir.FullPath(), req.Name, err)
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return fuse.ENOENT
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}
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// then, delete meta cache and fsNode cache
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dir.wfs.metaCache.DeleteEntry(context.Background(), filePath)
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// clear entry inside the file
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fsNode := dir.wfs.fsNodeCache.GetFsNode(filePath)
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if fsNode != nil {
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if file, ok := fsNode.(*File); ok {
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file.clearEntry()
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}
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}
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dir.wfs.fsNodeCache.DeleteFsNode(filePath)
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// remove current file handle if any
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dir.wfs.handlesLock.Lock()
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defer dir.wfs.handlesLock.Unlock()
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inodeId := util.NewFullPath(dir.FullPath(), req.Name).AsInode()
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delete(dir.wfs.handles, inodeId)
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// delete the chunks last
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if isDeleteData {
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dir.wfs.deleteFileChunks(entry.Chunks)
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}
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return nil
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}
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func (dir *Dir) removeFolder(req *fuse.RemoveRequest) error {
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log.Tracef("remove directory entry: %v", req)
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ignoreRecursiveErr := true // ignore recursion error since the OS should manage it
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err := filer_pb.Remove(dir.wfs, dir.FullPath(), req.Name, true, false, ignoreRecursiveErr, false, []int32{dir.wfs.signature})
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if err != nil {
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log.Infof("remove %s/%s: %v", dir.FullPath(), req.Name, err)
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if strings.Contains(err.Error(), "non-empty") {
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return fuse.EEXIST
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}
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return fuse.ENOENT
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}
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t := util.NewFullPath(dir.FullPath(), req.Name)
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dir.wfs.metaCache.DeleteEntry(context.Background(), t)
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dir.wfs.fsNodeCache.DeleteFsNode(t)
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return nil
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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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log.Tracef("%v dir setattr %+v", dir.FullPath(), req)
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if err := dir.maybeLoadEntry(); err != nil {
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return err
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}
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if req.Valid.Mode() {
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dir.entry.Attributes.FileMode = uint32(req.Mode)
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}
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if req.Valid.Uid() {
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dir.entry.Attributes.Uid = req.Uid
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}
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if req.Valid.Gid() {
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dir.entry.Attributes.Gid = req.Gid
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}
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if req.Valid.Mtime() {
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dir.entry.Attributes.Mtime = req.Mtime.Unix()
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}
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return dir.saveEntry()
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}
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func (dir *Dir) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {
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log.Tracef("dir Setxattr %s: %s", dir.FullPath(), req.Name)
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if err := dir.maybeLoadEntry(); err != nil {
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return err
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}
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if err := setxattr(dir.entry, req); err != nil {
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return err
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}
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return dir.saveEntry()
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}
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func (dir *Dir) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error {
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log.Tracef("dir Removexattr %s: %s", dir.FullPath(), req.Name)
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if err := dir.maybeLoadEntry(); err != nil {
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return err
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}
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if err := removexattr(dir.entry, req); err != nil {
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return err
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}
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return dir.saveEntry()
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}
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func (dir *Dir) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error {
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log.Tracef("dir Listxattr %s", dir.FullPath())
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if err := dir.maybeLoadEntry(); err != nil {
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return err
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}
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if err := listxattr(dir.entry, req, resp); err != nil {
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return err
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}
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return nil
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}
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func (dir *Dir) Forget() {
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log.Tracef("Forget dir %s", dir.FullPath())
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dir.wfs.fsNodeCache.DeleteFsNode(util.FullPath(dir.FullPath()))
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}
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func (dir *Dir) maybeLoadEntry() error {
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if dir.entry == nil {
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parentDirPath, name := util.FullPath(dir.FullPath()).DirAndName()
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entry, err := dir.wfs.maybeLoadEntry(parentDirPath, name)
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if err != nil {
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|
return err
|
|
}
|
|
dir.entry = entry
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (dir *Dir) saveEntry() error {
|
|
|
|
parentDir, name := util.FullPath(dir.FullPath()).DirAndName()
|
|
|
|
return dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
|
|
|
|
dir.wfs.mapPbIdFromLocalToFiler(dir.entry)
|
|
defer dir.wfs.mapPbIdFromFilerToLocal(dir.entry)
|
|
|
|
request := &filer_pb.UpdateEntryRequest{
|
|
Directory: parentDir,
|
|
Entry: dir.entry,
|
|
Signatures: []int32{dir.wfs.signature},
|
|
}
|
|
|
|
log.Debugf("save dir entry: %v", request)
|
|
_, err := client.UpdateEntry(context.Background(), request)
|
|
if err != nil {
|
|
log.Errorf("UpdateEntry dir %s/%s: %v", parentDir, name, err)
|
|
return fuse.EIO
|
|
}
|
|
|
|
dir.wfs.metaCache.UpdateEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
|
|
|
|
return nil
|
|
})
|
|
}
|
|
|
|
func (dir *Dir) FullPath() string {
|
|
var parts []string
|
|
for p := dir; p != nil; p = p.parent {
|
|
if strings.HasPrefix(p.name, "/") {
|
|
if len(p.name) > 1 {
|
|
parts = append(parts, p.name[1:])
|
|
}
|
|
} else {
|
|
parts = append(parts, p.name)
|
|
}
|
|
}
|
|
|
|
if len(parts) == 0 {
|
|
return "/"
|
|
}
|
|
|
|
var buf bytes.Buffer
|
|
for i := len(parts) - 1; i >= 0; i-- {
|
|
buf.WriteString("/")
|
|
buf.WriteString(parts[i])
|
|
}
|
|
return buf.String()
|
|
}
|