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mount: support extended attributes

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This commit is contained in:
Chris Lu
2019-12-15 21:07:01 -08:00
parent ad9d5ff5d0
commit 33b4b1868b
4 changed files with 320 additions and 104 deletions
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139
weed/filesys/file.go
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@@ -20,6 +20,10 @@ 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{})
type File struct {
Name string
@@ -38,7 +42,7 @@ func (file *File) Attr(ctx context.Context, attr *fuse.Attr) error {
glog.V(4).Infof("file Attr %s", file.fullpath())
if err := file.maybeLoadAttributes(ctx); err != nil {
if err := file.maybeLoadEntry(ctx); err != nil {
return err
}
@@ -54,6 +58,17 @@ func (file *File) Attr(ctx context.Context, attr *fuse.Attr) error {
}
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)
@@ -72,7 +87,7 @@ func (file *File) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.Op
func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
if err := file.maybeLoadAttributes(ctx); err != nil {
if err := file.maybeLoadEntry(ctx); err != nil {
return err
}
@@ -113,22 +128,55 @@ func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *f
file.wfs.listDirectoryEntriesCache.Delete(file.fullpath())
return file.wfs.WithFilerClient(ctx, func(client filer_pb.SeaweedFilerClient) error {
return file.saveEntry(ctx)
request := &filer_pb.UpdateEntryRequest{
Directory: file.dir.Path,
Entry: file.entry,
}
}
glog.V(1).Infof("set attr 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
}
func (file *File) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {
return nil
})
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
}
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
}
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: %s", file.fullpath())
if err := file.maybeLoadEntry(ctx); err != nil {
return err
}
if err := listxattr(file.entry, req, resp); err != nil {
return err
}
return file.saveEntry(ctx)
}
@@ -140,48 +188,14 @@ func (file *File) Fsync(ctx context.Context, req *fuse.FsyncRequest) error {
return nil
}
func (file *File) maybeLoadAttributes(ctx context.Context) error {
func (file *File) maybeLoadEntry(ctx context.Context) error {
if file.entry == nil || !file.isOpen {
item := file.wfs.listDirectoryEntriesCache.Get(file.fullpath())
var entry *filer_pb.Entry
if item != nil && !item.Expired() {
entry = item.Value().(*filer_pb.Entry)
entry, err := file.wfs.maybeLoadEntry(ctx, file.dir.Path, file.Name)
if err != nil {
return err
}
if entry != nil {
glog.V(4).Infof("file read attr cache hit %s", file.fullpath())
file.setEntry(entry)
// glog.V(1).Infof("file attr read cached %v attributes", file.Name)
} else {
glog.V(3).Infof("file read attr cache miss %s", file.fullpath())
err := file.wfs.WithFilerClient(ctx, func(client filer_pb.SeaweedFilerClient) error {
request := &filer_pb.LookupDirectoryEntryRequest{
Name: file.Name,
Directory: file.dir.Path,
}
resp, err := client.LookupDirectoryEntry(ctx, request)
if err != nil {
glog.V(3).Infof("file attr read file %v: %v", request, err)
return fuse.ENOENT
}
file.setEntry(resp.Entry)
glog.V(3).Infof("file attr %v %+v: %d", file.fullpath(), file.entry.Attributes, filer2.TotalSize(file.entry.Chunks))
// file.wfs.listDirectoryEntriesCache.Set(file.fullpath(), file.entry, file.wfs.option.EntryCacheTtl)
return nil
})
if err != nil {
return err
}
}
}
return nil
@@ -216,3 +230,22 @@ 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
})
}