146 lines
3.4 KiB
Go
146 lines
3.4 KiB
Go
package meta
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import (
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"fmt"
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objectSDK "github.com/nspcc-dev/neofs-sdk-go/object"
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"go.etcd.io/bbolt"
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)
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// ToMoveItPrm groups the parameters of ToMoveIt operation.
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type ToMoveItPrm struct {
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addr *objectSDK.Address
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}
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// ToMoveItRes groups resulting values of ToMoveIt operation.
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type ToMoveItRes struct{}
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// WithAddress sets address of the object to move into another shard.
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func (p *ToMoveItPrm) WithAddress(addr *objectSDK.Address) *ToMoveItPrm {
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if p != nil {
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p.addr = addr
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}
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return p
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}
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// DoNotMovePrm groups the parameters of DoNotMove operation.
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type DoNotMovePrm struct {
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addr *objectSDK.Address
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}
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// DoNotMoveRes groups resulting values of DoNotMove operation.
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type DoNotMoveRes struct{}
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// WithAddress sets address of the object to prevent moving into another shard.
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func (p *DoNotMovePrm) WithAddress(addr *objectSDK.Address) *DoNotMovePrm {
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if p != nil {
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p.addr = addr
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}
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return p
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}
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// MovablePrm groups the parameters of Movable operation.
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type MovablePrm struct{}
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// MovableRes groups resulting values of Movable operation.
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type MovableRes struct {
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addrList []*objectSDK.Address
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}
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// AddressList returns resulting addresses of Movable operation.
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func (p *MovableRes) AddressList() []*objectSDK.Address {
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return p.addrList
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}
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// ToMoveIt marks object to move it into another shard.
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func ToMoveIt(db *DB, addr *objectSDK.Address) error {
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_, err := db.ToMoveIt(new(ToMoveItPrm).WithAddress(addr))
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return err
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}
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// ToMoveIt marks objects to move it into another shard. This useful for
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// faster HRW fetching.
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func (db *DB) ToMoveIt(prm *ToMoveItPrm) (res *ToMoveItRes, err error) {
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err = db.boltDB.Update(func(tx *bbolt.Tx) error {
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toMoveIt, err := tx.CreateBucketIfNotExists(toMoveItBucketName)
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if err != nil {
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return err
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}
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return toMoveIt.Put(addressKey(prm.addr), zeroValue)
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})
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return
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}
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// DoNotMove prevents the object to be moved into another shard.
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func DoNotMove(db *DB, addr *objectSDK.Address) error {
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_, err := db.DoNotMove(new(DoNotMovePrm).WithAddress(addr))
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return err
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}
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// DoNotMove removes `MoveIt` mark from the object.
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func (db *DB) DoNotMove(prm *DoNotMovePrm) (res *DoNotMoveRes, err error) {
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err = db.boltDB.Update(func(tx *bbolt.Tx) error {
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toMoveIt := tx.Bucket(toMoveItBucketName)
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if toMoveIt == nil {
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return nil
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}
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return toMoveIt.Delete(addressKey(prm.addr))
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})
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return
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}
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// Movable returns all movable objects of DB.
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func Movable(db *DB) ([]*objectSDK.Address, error) {
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r, err := db.Movable(new(MovablePrm))
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if err != nil {
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return nil, err
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}
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return r.AddressList(), nil
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}
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// Movable returns list of marked objects to move into other shard.
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func (db *DB) Movable(prm *MovablePrm) (*MovableRes, error) {
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var strAddrs []string
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err := db.boltDB.View(func(tx *bbolt.Tx) error {
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toMoveIt := tx.Bucket(toMoveItBucketName)
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if toMoveIt == nil {
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return nil
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}
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return toMoveIt.ForEach(func(k, v []byte) error {
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strAddrs = append(strAddrs, string(k))
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return nil
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})
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})
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if err != nil {
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return nil, err
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}
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// we can parse strings to structures in-place, but probably it seems
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// more efficient to keep bolt db TX code smaller because it might be
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// bottleneck.
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addrs := make([]*objectSDK.Address, 0, len(strAddrs))
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for i := range strAddrs {
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addr, err := addressFromKey([]byte(strAddrs[i]))
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if err != nil {
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return nil, fmt.Errorf("can't parse object address %v: %w",
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strAddrs[i], err)
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}
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addrs = append(addrs, addr)
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}
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return &MovableRes{
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addrList: addrs,
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}, nil
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}
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