diff --git a/pkg/local_object_storage/shard/list.go b/pkg/local_object_storage/shard/list.go index 98dc4747..bf584024 100644 --- a/pkg/local_object_storage/shard/list.go +++ b/pkg/local_object_storage/shard/list.go @@ -19,6 +19,42 @@ func (r *ListContainersRes) Containers() []*cid.ID { return r.containers } +// ListWithCursorPrm contains parameters for ListWithCursor operation. +type ListWithCursorPrm struct { + count uint32 + cursor string +} + +// ListWithCursorRes contains values returned from ListWithCursor operation. +type ListWithCursorRes struct { + addrList []*object.Address + cursor string +} + +// WithCount sets maximum amount of addresses that ListWithCursor can return. +func (p *ListWithCursorPrm) WithCount(count uint32) *ListWithCursorPrm { + p.count = count + return p +} + +// WithCursor sets cursor for ListWithCursor operation. For initial request, +// ignore this param or use empty string. For continues requests, use value +// from ListWithCursorRes. +func (p *ListWithCursorPrm) WithCursor(cursor string) *ListWithCursorPrm { + p.cursor = cursor + return p +} + +// AddressList returns addresses selected by ListWithCursor operation. +func (r ListWithCursorRes) AddressList() []*object.Address { + return r.addrList +} + +// Cursor returns cursor for consecutive listing requests. +func (r ListWithCursorRes) Cursor() string { + return r.cursor +} + // List returns all objects physically stored in the Shard. func (s *Shard) List() (*SelectRes, error) { lst, err := s.metaBase.Containers() @@ -65,3 +101,32 @@ func ListContainers(s *Shard) ([]*cid.ID, error) { return res.Containers(), nil } + +// ListWithCursor lists physical objects available in shard starting from +// cursor. Includes regular, tombstone and storage group objects. Does not +// include inhumed objects. Use cursor value from response for consecutive requests. +func (s *Shard) ListWithCursor(prm *ListWithCursorPrm) (*ListWithCursorRes, error) { + metaPrm := new(meta.ListPrm).WithCount(prm.count).WithCursor(prm.cursor) + res, err := s.metaBase.ListWithCursor(metaPrm) + if err != nil { + return nil, fmt.Errorf("could not get list of objects: %w", err) + } + + return &ListWithCursorRes{ + addrList: res.AddressList(), + cursor: res.Cursor(), + }, nil +} + +// ListWithCursor lists physical objects available in shard starting from +// cursor. Includes regular, tombstone and storage group objects. Does not +// include inhumed objects. Use cursor value from response for consecutive requests. +func ListWithCursor(s *Shard, count uint32, cursor string) ([]*object.Address, string, error) { + prm := new(ListWithCursorPrm).WithCount(count).WithCursor(cursor) + res, err := s.ListWithCursor(prm) + if err != nil { + return nil, "", err + } + + return res.AddressList(), res.Cursor(), nil +}