seaweedfs/weed/filesys/dir.go
2019-12-15 22:24:06 -08:00

413 lines
9.9 KiB
Go

package filesys
import (
"context"
"os"
"path"
"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"
)
type Dir struct {
Path string
wfs *WFS
entry *filer_pb.Entry
}
var _ = fs.Node(&Dir{})
var _ = fs.NodeCreater(&Dir{})
var _ = fs.NodeMkdirer(&Dir{})
var _ = fs.NodeRequestLookuper(&Dir{})
var _ = fs.HandleReadDirAller(&Dir{})
var _ = fs.NodeRemover(&Dir{})
var _ = fs.NodeRenamer(&Dir{})
var _ = fs.NodeSetattrer(&Dir{})
var _ = fs.NodeGetxattrer(&Dir{})
var _ = fs.NodeSetxattrer(&Dir{})
var _ = fs.NodeRemovexattrer(&Dir{})
var _ = fs.NodeListxattrer(&Dir{})
func (dir *Dir) Attr(ctx context.Context, attr *fuse.Attr) error {
glog.V(3).Infof("dir Attr %s", dir.Path)
// https://github.com/bazil/fuse/issues/196
attr.Valid = time.Second
if dir.Path == dir.wfs.option.FilerMountRootPath {
dir.setRootDirAttributes(attr)
return nil
}
if err := dir.maybeLoadEntry(ctx); err != nil {
return err
}
attr.Mode = os.FileMode(dir.entry.Attributes.FileMode) | os.ModeDir
attr.Mtime = time.Unix(dir.entry.Attributes.Mtime, 0)
attr.Ctime = time.Unix(dir.entry.Attributes.Crtime, 0)
attr.Gid = dir.entry.Attributes.Gid
attr.Uid = dir.entry.Attributes.Uid
return nil
}
func (dir *Dir) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error {
glog.V(4).Infof("dir Getxattr %s", dir.Path)
if err := dir.maybeLoadEntry(ctx); err != nil {
return err
}
return getxattr(dir.entry, req, resp)
}
func (dir *Dir) setRootDirAttributes(attr *fuse.Attr) {
attr.Uid = dir.wfs.option.MountUid
attr.Gid = dir.wfs.option.MountGid
attr.Mode = dir.wfs.option.MountMode
attr.Crtime = dir.wfs.option.MountCtime
attr.Ctime = dir.wfs.option.MountCtime
attr.Mtime = dir.wfs.option.MountMtime
attr.Atime = dir.wfs.option.MountMtime
}
func (dir *Dir) newFile(name string, entry *filer_pb.Entry) *File {
return &File{
Name: name,
dir: dir,
wfs: dir.wfs,
entry: entry,
entryViewCache: nil,
}
}
func (dir *Dir) Create(ctx context.Context, req *fuse.CreateRequest,
resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
request := &filer_pb.CreateEntryRequest{
Directory: dir.Path,
Entry: &filer_pb.Entry{
Name: req.Name,
IsDirectory: req.Mode&os.ModeDir > 0,
Attributes: &filer_pb.FuseAttributes{
Mtime: time.Now().Unix(),
Crtime: time.Now().Unix(),
FileMode: uint32(req.Mode &^ dir.wfs.option.Umask),
Uid: req.Uid,
Gid: req.Gid,
Collection: dir.wfs.option.Collection,
Replication: dir.wfs.option.Replication,
TtlSec: dir.wfs.option.TtlSec,
},
},
}
glog.V(1).Infof("create: %v", request)
if request.Entry.IsDirectory {
if err := dir.wfs.WithFilerClient(ctx, func(client filer_pb.SeaweedFilerClient) error {
if _, err := client.CreateEntry(ctx, request); err != nil {
glog.V(0).Infof("create %s/%s: %v", dir.Path, req.Name, err)
return fuse.EIO
}
return nil
}); err != nil {
return nil, nil, err
}
}
file := dir.newFile(req.Name, request.Entry)
if !request.Entry.IsDirectory {
file.isOpen = true
}
fh := dir.wfs.AcquireHandle(file, req.Uid, req.Gid)
fh.dirtyMetadata = true
return file, fh, nil
}
func (dir *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, error) {
err := dir.wfs.WithFilerClient(ctx, func(client filer_pb.SeaweedFilerClient) error {
request := &filer_pb.CreateEntryRequest{
Directory: dir.Path,
Entry: &filer_pb.Entry{
Name: req.Name,
IsDirectory: true,
Attributes: &filer_pb.FuseAttributes{
Mtime: time.Now().Unix(),
Crtime: time.Now().Unix(),
FileMode: uint32(req.Mode &^ dir.wfs.option.Umask),
Uid: req.Uid,
Gid: req.Gid,
},
},
}
glog.V(1).Infof("mkdir: %v", request)
if _, err := client.CreateEntry(ctx, request); err != nil {
glog.V(0).Infof("mkdir %s/%s: %v", dir.Path, req.Name, err)
return fuse.EIO
}
return nil
})
if err == nil {
node := &Dir{Path: path.Join(dir.Path, req.Name), wfs: dir.wfs}
return node, nil
}
return nil, err
}
func (dir *Dir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (node fs.Node, err error) {
glog.V(4).Infof("dir Lookup %s: %s", dir.Path, req.Name)
var entry *filer_pb.Entry
fullFilePath := path.Join(dir.Path, req.Name)
item := dir.wfs.listDirectoryEntriesCache.Get(fullFilePath)
if item != nil && !item.Expired() {
entry = item.Value().(*filer_pb.Entry)
}
if entry == nil {
glog.V(3).Infof("dir Lookup cache miss %s", fullFilePath)
entry, err = filer2.GetEntry(ctx, dir.wfs, fullFilePath)
if err != nil {
return nil, err
}
dir.wfs.listDirectoryEntriesCache.Set(fullFilePath, entry, 5*time.Minute)
} else {
glog.V(4).Infof("dir Lookup cache hit %s", fullFilePath)
}
if entry != nil {
if entry.IsDirectory {
node = &Dir{Path: path.Join(dir.Path, req.Name), wfs: dir.wfs, entry: entry}
} else {
node = dir.newFile(req.Name, entry)
}
resp.EntryValid = time.Duration(0)
resp.Attr.Mtime = time.Unix(entry.Attributes.Mtime, 0)
resp.Attr.Ctime = time.Unix(entry.Attributes.Crtime, 0)
resp.Attr.Mode = os.FileMode(entry.Attributes.FileMode)
resp.Attr.Gid = entry.Attributes.Gid
resp.Attr.Uid = entry.Attributes.Uid
return node, nil
}
return nil, fuse.ENOENT
}
func (dir *Dir) ReadDirAll(ctx context.Context) (ret []fuse.Dirent, err error) {
glog.V(3).Infof("dir ReadDirAll %s", dir.Path)
cacheTtl := 5 * time.Minute
readErr := filer2.ReadDirAllEntries(ctx, dir.wfs, dir.Path, "", func(entry *filer_pb.Entry, isLast bool) {
if entry.IsDirectory {
dirent := fuse.Dirent{Name: entry.Name, Type: fuse.DT_Dir}
ret = append(ret, dirent)
} else {
dirent := fuse.Dirent{Name: entry.Name, Type: fuse.DT_File}
ret = append(ret, dirent)
}
dir.wfs.listDirectoryEntriesCache.Set(path.Join(dir.Path, entry.Name), entry, cacheTtl)
})
if readErr != nil {
glog.V(0).Infof("list %s: %v", dir.Path, err)
return ret, fuse.EIO
}
return ret, err
}
func (dir *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) error {
if !req.Dir {
return dir.removeOneFile(ctx, req)
}
return dir.removeFolder(ctx, req)
}
func (dir *Dir) removeOneFile(ctx context.Context, req *fuse.RemoveRequest) error {
entry, err := filer2.GetEntry(ctx, dir.wfs, path.Join(dir.Path, req.Name))
if err != nil {
return err
}
dir.wfs.deleteFileChunks(ctx, entry.Chunks)
dir.wfs.listDirectoryEntriesCache.Delete(path.Join(dir.Path, req.Name))
return dir.wfs.WithFilerClient(ctx, func(client filer_pb.SeaweedFilerClient) error {
request := &filer_pb.DeleteEntryRequest{
Directory: dir.Path,
Name: req.Name,
IsDeleteData: false,
}
glog.V(3).Infof("remove file: %v", request)
_, err := client.DeleteEntry(ctx, request)
if err != nil {
glog.V(3).Infof("remove file %s/%s: %v", dir.Path, req.Name, err)
return fuse.ENOENT
}
return nil
})
}
func (dir *Dir) removeFolder(ctx context.Context, req *fuse.RemoveRequest) error {
dir.wfs.listDirectoryEntriesCache.Delete(path.Join(dir.Path, req.Name))
return dir.wfs.WithFilerClient(ctx, func(client filer_pb.SeaweedFilerClient) error {
request := &filer_pb.DeleteEntryRequest{
Directory: dir.Path,
Name: req.Name,
IsDeleteData: true,
}
glog.V(3).Infof("remove directory entry: %v", request)
_, err := client.DeleteEntry(ctx, request)
if err != nil {
glog.V(3).Infof("remove %s/%s: %v", dir.Path, req.Name, err)
return fuse.ENOENT
}
return nil
})
}
func (dir *Dir) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
if err := dir.maybeLoadEntry(ctx); err != nil {
return err
}
glog.V(3).Infof("%v dir setattr %+v, fh=%d", dir.Path, req, req.Handle)
if req.Valid.Mode() {
dir.entry.Attributes.FileMode = uint32(req.Mode)
}
if req.Valid.Uid() {
dir.entry.Attributes.Uid = req.Uid
}
if req.Valid.Gid() {
dir.entry.Attributes.Gid = req.Gid
}
if req.Valid.Mtime() {
dir.entry.Attributes.Mtime = req.Mtime.Unix()
}
dir.wfs.listDirectoryEntriesCache.Delete(dir.Path)
return dir.saveEntry(ctx)
}
func (dir *Dir) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {
glog.V(4).Infof("dir Setxattr %s: %s", dir.Path, req.Name)
if err := dir.maybeLoadEntry(ctx); err != nil {
return err
}
if err := setxattr(dir.entry, req); err != nil {
return err
}
return dir.saveEntry(ctx)
}
func (dir *Dir) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error {
glog.V(4).Infof("dir Removexattr %s: %s", dir.Path, req.Name)
if err := dir.maybeLoadEntry(ctx); err != nil {
return err
}
if err := removexattr(dir.entry, req); err != nil {
return err
}
return dir.saveEntry(ctx)
}
func (dir *Dir) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error {
glog.V(4).Infof("dir Listxattr %s", dir.Path)
if err := dir.maybeLoadEntry(ctx); err != nil {
return err
}
if err := listxattr(dir.entry, req, resp); err != nil {
return err
}
return dir.saveEntry(ctx)
}
func (dir *Dir) maybeLoadEntry(ctx context.Context) error {
if dir.entry == nil {
parentDirPath, name := filer2.FullPath(dir.Path).DirAndName()
entry, err := dir.wfs.maybeLoadEntry(ctx, parentDirPath, name)
dir.entry = entry
if err != nil {
return err
}
}
return nil
}
func (dir *Dir) saveEntry(ctx context.Context) error {
parentDir, name := filer2.FullPath(dir.Path).DirAndName()
return dir.wfs.WithFilerClient(ctx, func(client filer_pb.SeaweedFilerClient) error {
request := &filer_pb.UpdateEntryRequest{
Directory: parentDir,
Entry: dir.entry,
}
glog.V(1).Infof("save dir entry: %v", request)
_, err := client.UpdateEntry(ctx, request)
if err != nil {
glog.V(0).Infof("UpdateEntry dir %s/%s: %v", parentDir, name, err)
return fuse.EIO
}
return nil
})
}