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