package block /* import ( "fmt" "os" "github.com/mitchellh/mapstructure" "golang.org/x/sys/unix" "github.com/sdstack/storage/backend" ) type StoreBlock struct { store []string } type ObjectBlock struct { fs *StoreBlock fp *os.File } func init() { backend.RegisterBackend("block", &StoreBlock{}) } func (s *StoreBlock) Init(data interface{}) error { var err error err = mapstructure.Decode(data, &s.store) if err != nil { return err } fmt.Printf("%#+v\n", s) return nil } func (s *StoreBlock) Configure(data interface{}) error { var err error err = mapstructure.Decode(data, &s.store) if err != nil { return err } fmt.Printf("%#+v\n", s) return nil } func (s *StoreBlock) Open() error { return nil } func (s *StoreBlock) Close() error { return nil } func (o *ObjectBlock) Allocate(mode uint64, offset uint64, length uint64) error { return unix.Fallocate(int(o.fp.Fd()), uint32(mode), int64(offset), int64(length)) } func (o *ObjectBlock) Delete(flags uint64) error { return nil // return os.Remove(filepath.Join()) } func (o *ObjectBlock) ReadAt(data []byte, offset uint64, flags uint64) (uint64, error) { return 0, nil } func (o *ObjectBlock) WriteAt(data []byte, offset uint64, flags uint64) (uint64, error) { return 0, nil } func (o *ObjectBlock) Read(data []byte) (int, error) { return o.fp.Read(data) } func (o *ObjectBlock) Write(data []byte) (int, error) { return o.fp.Write(data) } func (o *ObjectBlock) Seek(offset int64, whence int) (int64, error) { return o.fp.Seek(offset, whence) } func (o *StoreBlock) ObjectExists(name string) (bool, error) { _, err := os.Stat(name) return os.IsNotExist(err), nil } func (o *ObjectBlock) Sync() error { return o.fp.Sync() } func (o *ObjectBlock) Close() error { return o.fp.Close() } func (o *ObjectBlock) Remove() error { return nil } */