9 "github.com/anacrolix/torrent/metainfo"
12 type boltPiece struct {
20 _ PieceImpl = (*boltPiece)(nil)
21 dataBucketKey = []byte("data")
24 func (me *boltPiece) pc() PieceCompletionGetSetter {
25 return boltPieceCompletion{me.db}
28 func (me *boltPiece) pk() metainfo.PieceKey {
29 return metainfo.PieceKey{me.ih, me.p.Index()}
32 func (me *boltPiece) Completion() Completion {
33 c, err := me.pc().Get(me.pk())
35 case bbolt.ErrDatabaseNotOpen:
44 func (me *boltPiece) MarkComplete() error {
45 return me.pc().Set(me.pk(), true)
48 func (me *boltPiece) MarkNotComplete() error {
49 return me.pc().Set(me.pk(), false)
51 func (me *boltPiece) ReadAt(b []byte, off int64) (n int, err error) {
52 err = me.db.View(func(tx *bbolt.Tx) error {
53 db := tx.Bucket(dataBucketKey)
60 ck := me.chunkKey(int(ci))
62 // If the chunk is the wrong size, assume it's missing as we can't rely on the data.
63 if len(_b) != chunkSize {
66 n1 := copy(b, _b[off:])
77 func (me *boltPiece) chunkKey(index int) (ret [26]byte) {
78 copy(ret[:], me.key[:])
79 binary.BigEndian.PutUint16(ret[24:], uint16(index))
83 func (me *boltPiece) WriteAt(b []byte, off int64) (n int, err error) {
84 err = me.db.Update(func(tx *bbolt.Tx) error {
85 db, err := tx.CreateBucketIfNotExists(dataBucketKey)
92 _b := make([]byte, chunkSize)
93 ck := me.chunkKey(int(ci))
94 copy(_b, db.Get(ck[:]))
95 n1 := copy(_b[off:], b)