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package mount
import (
"context"
"github.com/chrislusf/seaweedfs/weed/filesys/meta_cache"
"github.com/chrislusf/seaweedfs/weed/pb"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/storage/types"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/chrislusf/seaweedfs/weed/util/grace"
"google.golang.org/grpc"
"os"
"path"
"path/filepath"
"syscall"
"time"
"github.com/hanwen/go-fuse/v2/fs"
"github.com/hanwen/go-fuse/v2/fuse"
)
type Option struct {
MountDirectory string
FilerAddresses []pb.ServerAddress
filerIndex int
GrpcDialOption grpc.DialOption
FilerMountRootPath string
Collection string
Replication string
TtlSec int32
DiskType types.DiskType
ChunkSizeLimit int64
ConcurrentWriters int
CacheDir string
CacheSizeMB int64
DataCenter string
Umask os.FileMode
MountUid uint32
MountGid uint32
MountMode os.FileMode
MountCtime time.Time
MountMtime time.Time
MountParentInode uint64
VolumeServerAccess string // how to access volume servers
Cipher bool // whether encrypt data on volume server
UidGidMapper *meta_cache.UidGidMapper
uniqueCacheDir string
uniqueCacheTempPageDir string
}
type WFS struct {
fs.Inode
option *Option
metaCache *meta_cache.MetaCache
signature int32
}
func NewSeaweedFileSystem(option *Option) *WFS {
wfs := &WFS{
option: option,
signature: util.RandomInt32(),
}
wfs.metaCache = meta_cache.NewMetaCache(path.Join(option.getUniqueCacheDir(), "meta"), util.FullPath(option.FilerMountRootPath), option.UidGidMapper, func(filePath util.FullPath, entry *filer_pb.Entry) {
})
grace.OnInterrupt(func() {
wfs.metaCache.Shutdown()
})
return wfs
}
func (option *Option) setupUniqueCacheDirectory() {
cacheUniqueId := util.Md5String([]byte(option.MountDirectory + string(option.FilerAddresses[0]) + option.FilerMountRootPath + util.Version()))[0:8]
option.uniqueCacheDir = path.Join(option.CacheDir, cacheUniqueId)
option.uniqueCacheTempPageDir = filepath.Join(option.uniqueCacheDir, "sw")
os.MkdirAll(option.uniqueCacheTempPageDir, os.FileMode(0777)&^option.Umask)
}
func (option *Option) getTempFilePageDir() string {
return option.uniqueCacheTempPageDir
}
func (option *Option) getUniqueCacheDir() string {
return option.uniqueCacheDir
}
func (r *WFS) OnAdd(ctx context.Context) {
ch := r.NewPersistentInode(
ctx, &fs.MemRegularFile{
Data: []byte("file.txt"),
Attr: fuse.Attr{
Mode: 0644,
},
}, fs.StableAttr{Ino: 2})
r.AddChild("file.txt", ch, false)
}
func (r *WFS) Getattr(ctx context.Context, fh fs.FileHandle, out *fuse.AttrOut) syscall.Errno {
out.Mode = 0755
return 0
}
var _ = (fs.NodeGetattrer)((*WFS)(nil))
var _ = (fs.NodeOnAdder)((*WFS)(nil))
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