49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
package storage
|
|
|
|
import (
|
|
"database/sql"
|
|
"path/filepath"
|
|
|
|
_ "github.com/mattn/go-sqlite3"
|
|
|
|
"github.com/anacrolix/torrent/metainfo"
|
|
)
|
|
|
|
type dbPieceCompletion struct {
|
|
db *sql.DB
|
|
}
|
|
|
|
func newDBPieceCompletion(dir string) (ret *dbPieceCompletion, err error) {
|
|
p := filepath.Join(dir, ".torrent.db")
|
|
db, err := sql.Open("sqlite3", p)
|
|
if err != nil {
|
|
return
|
|
}
|
|
_, err = db.Exec(`create table if not exists completed(infohash, "index", unique(infohash, "index") on conflict ignore)`)
|
|
if err != nil {
|
|
db.Close()
|
|
return
|
|
}
|
|
ret = &dbPieceCompletion{db}
|
|
return
|
|
}
|
|
|
|
func (me *dbPieceCompletion) Get(pk metainfo.PieceKey) (ret bool, err error) {
|
|
row := me.db.QueryRow(`select exists(select * from completed where infohash=? and "index"=?)`, pk.InfoHash.HexString(), pk.Index)
|
|
err = row.Scan(&ret)
|
|
return
|
|
}
|
|
|
|
func (me *dbPieceCompletion) Set(pk metainfo.PieceKey, b bool) (err error) {
|
|
if b {
|
|
_, err = me.db.Exec(`insert into completed (infohash, "index") values (?, ?)`, pk.InfoHash.HexString(), pk.Index)
|
|
} else {
|
|
_, err = me.db.Exec(`delete from completed where infohash=? and "index"=?`, pk.InfoHash.HexString(), pk.Index)
|
|
}
|
|
return
|
|
}
|
|
|
|
func (me *dbPieceCompletion) Close() {
|
|
me.db.Close()
|
|
}
|