117 lines
2.8 KiB
Go
117 lines
2.8 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package storagenodedb
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import (
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"context"
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"database/sql"
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"strings"
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"time"
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"github.com/gogo/protobuf/proto"
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"storj.io/storj/pkg/pb"
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"storj.io/storj/pkg/storj"
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"storj.io/storj/storagenode/vouchers"
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)
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type vouchersdb struct{ *InfoDB }
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// Vouchers returns database for storing vouchers
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func (db *DB) Vouchers() vouchers.DB { return db.info.Vouchers() }
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// Vouchers returns database for storing vouchers
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func (db *InfoDB) Vouchers() vouchers.DB { return &vouchersdb{db} }
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// Put inserts or updates a voucher from a satellite
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func (db *vouchersdb) Put(ctx context.Context, voucher *pb.Voucher) (err error) {
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defer mon.Task()(&ctx)(&err)
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id := voucher.SatelliteId
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expiration := voucher.Expiration.UTC()
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voucherSerialized, err := proto.Marshal(voucher)
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if err != nil {
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return ErrInfo.Wrap(err)
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}
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_, err = db.db.Exec(`
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INSERT INTO vouchers(
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satellite_id,
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voucher_serialized,
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expiration
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) VALUES (?, ?, ?)
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ON CONFLICT(satellite_id) DO UPDATE SET
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voucher_serialized = ?,
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expiration = ?
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`, id, voucherSerialized, expiration, voucherSerialized, expiration)
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return err
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}
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// NeedVoucher returns true if a voucher from a particular satellite is expired, about to expire, or does not exist
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func (db *vouchersdb) NeedVoucher(ctx context.Context, satelliteID storj.NodeID, expirationBuffer time.Duration) (need bool, err error) {
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defer mon.Task()(&ctx)(&err)
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expiresBefore := time.Now().UTC().Add(expirationBuffer)
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// query returns row if voucher is good. If not, it is either expiring or does not exist
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row := db.db.QueryRow(`
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SELECT satellite_id
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FROM vouchers
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WHERE satellite_id = ? AND expiration >= ?
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`, satelliteID, expiresBefore)
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var bytes []byte
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err = row.Scan(&bytes)
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if err != nil {
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if err == sql.ErrNoRows {
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return true, nil
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}
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return false, ErrInfo.Wrap(err)
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}
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return false, nil
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}
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// GetValid returns one valid voucher from the list of approved satellites
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func (db *vouchersdb) GetValid(ctx context.Context, satellites []storj.NodeID) (*pb.Voucher, error) {
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var err error
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defer mon.Task()(&ctx)(&err)
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var args []interface{}
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idCondition := `satellite_id IN (?` + strings.Repeat(", ?", len(satellites)-1) + `)`
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for _, id := range satellites {
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args = append(args, id)
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}
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args = append(args, time.Now().UTC())
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row := db.db.QueryRow(db.InfoDB.Rebind(`
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SELECT voucher_serialized
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FROM vouchers
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WHERE `+idCondition+`
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AND expiration > ?
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LIMIT 1
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`), args...)
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var bytes []byte
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err = row.Scan(&bytes)
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if err != nil {
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if err == sql.ErrNoRows {
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return nil, nil
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}
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return nil, ErrInfo.Wrap(err)
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}
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voucher := &pb.Voucher{}
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err = proto.Unmarshal(bytes, voucher)
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if err != nil {
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return nil, ErrInfo.Wrap(err)
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}
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return voucher, nil
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}
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