package meta import ( "fmt" oid "github.com/nspcc-dev/neofs-sdk-go/object/id" "go.etcd.io/bbolt" ) // ToMoveItPrm groups the parameters of ToMoveIt operation. type ToMoveItPrm struct { addr oid.Address } // ToMoveItRes groups the resulting values of ToMoveIt operation. type ToMoveItRes struct{} // SetAddress sets address of the object to move into another shard. func (p *ToMoveItPrm) SetAddress(addr oid.Address) { p.addr = addr } // DoNotMovePrm groups the parameters of DoNotMove operation. type DoNotMovePrm struct { addr oid.Address } // DoNotMoveRes groups the resulting values of DoNotMove operation. type DoNotMoveRes struct{} // SetAddress sets address of the object to prevent moving into another shard. func (p *DoNotMovePrm) SetAddress(addr oid.Address) { p.addr = addr } // MovablePrm groups the parameters of Movable operation. type MovablePrm struct{} // MovableRes groups the resulting values of Movable operation. type MovableRes struct { addrList []oid.Address } // AddressList returns resulting addresses of Movable operation. func (p MovableRes) AddressList() []oid.Address { return p.addrList } // ToMoveIt marks objects to move it into another shard. This useful for // faster HRW fetching. func (db *DB) ToMoveIt(prm ToMoveItPrm) (res ToMoveItRes, err error) { db.modeMtx.RLock() defer db.modeMtx.RUnlock() if db.mode.NoMetabase() { return res, ErrDegradedMode } else if db.mode.ReadOnly() { return res, ErrReadOnlyMode } key := make([]byte, addressKeySize) key = addressKey(prm.addr, key) err = db.boltDB.Update(func(tx *bbolt.Tx) error { toMoveIt := tx.Bucket(toMoveItBucketName) return toMoveIt.Put(key, zeroValue) }) return } // DoNotMove removes `MoveIt` mark from the object. func (db *DB) DoNotMove(prm DoNotMovePrm) (res DoNotMoveRes, err error) { db.modeMtx.RLock() defer db.modeMtx.RUnlock() if db.mode.NoMetabase() { return res, ErrDegradedMode } else if db.mode.ReadOnly() { return res, ErrReadOnlyMode } key := make([]byte, addressKeySize) key = addressKey(prm.addr, key) err = db.boltDB.Update(func(tx *bbolt.Tx) error { toMoveIt := tx.Bucket(toMoveItBucketName) return toMoveIt.Delete(key) }) return } // Movable returns list of marked objects to move into other shard. func (db *DB) Movable(_ MovablePrm) (MovableRes, error) { db.modeMtx.RLock() defer db.modeMtx.RUnlock() if db.mode.NoMetabase() { return MovableRes{}, ErrDegradedMode } var strAddrs []string err := db.boltDB.View(func(tx *bbolt.Tx) error { toMoveIt := tx.Bucket(toMoveItBucketName) return toMoveIt.ForEach(func(k, v []byte) error { strAddrs = append(strAddrs, string(k)) return nil }) }) if err != nil { return MovableRes{}, err } // we can parse strings to structures in-place, but probably it seems // more efficient to keep bolt db TX code smaller because it might be // bottleneck. addrs := make([]oid.Address, len(strAddrs)) for i := range strAddrs { err = decodeAddressFromKey(&addrs[i], []byte(strAddrs[i])) if err != nil { return MovableRes{}, fmt.Errorf("can't parse object address %v: %w", strAddrs[i], err) } } return MovableRes{ addrList: addrs, }, nil }