frostfs-node/pkg/local_object_storage/shard/list.go

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package shard
import (
"fmt"
meta "github.com/nspcc-dev/neofs-node/pkg/local_object_storage/metabase"
cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
"github.com/nspcc-dev/neofs-sdk-go/object"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
"go.uber.org/zap"
)
// Cursor is a type for continuous object listing.
type Cursor = meta.Cursor
// ErrEndOfListing is returned from object listing with cursor
// when storage can't return any more objects after provided
// cursor. Use nil cursor object to start listing again.
var ErrEndOfListing = meta.ErrEndOfListing
type ListContainersPrm struct{}
type ListContainersRes struct {
containers []cid.ID
}
func (r ListContainersRes) Containers() []cid.ID {
return r.containers
}
// ListWithCursorPrm contains parameters for ListWithCursor operation.
type ListWithCursorPrm struct {
count uint32
cursor *Cursor
}
// ListWithCursorRes contains values returned from ListWithCursor operation.
type ListWithCursorRes struct {
addrList []oid.Address
cursor *Cursor
}
// WithCount sets maximum amount of addresses that ListWithCursor should return.
func (p *ListWithCursorPrm) WithCount(count uint32) {
p.count = count
}
// WithCursor sets cursor for ListWithCursor operation. For initial request,
// ignore this param or use nil value. For consecutive requests, use value
// from ListWithCursorRes.
func (p *ListWithCursorPrm) WithCursor(cursor *Cursor) {
p.cursor = cursor
}
// AddressList returns addresses selected by ListWithCursor operation.
func (r ListWithCursorRes) AddressList() []oid.Address {
return r.addrList
}
// Cursor returns cursor for consecutive listing requests.
func (r ListWithCursorRes) Cursor() *Cursor {
return r.cursor
}
// List returns all objects physically stored in the Shard.
func (s *Shard) List() (res SelectRes, err error) {
if s.GetMode().NoMetabase() {
return SelectRes{}, ErrDegradedMode
}
lst, err := s.metaBase.Containers()
if err != nil {
return res, fmt.Errorf("can't list stored containers: %w", err)
}
filters := object.NewSearchFilters()
filters.AddPhyFilter()
for i := range lst {
var sPrm meta.SelectPrm
sPrm.SetContainerID(lst[i])
sPrm.SetFilters(filters)
sRes, err := s.metaBase.Select(sPrm) // consider making List in metabase
if err != nil {
s.log.Debug("can't select all objects",
zap.Stringer("cid", lst[i]),
zap.String("error", err.Error()))
continue
}
res.addrList = append(res.addrList, sRes.AddressList()...)
}
return res, nil
}
func (s *Shard) ListContainers(_ ListContainersPrm) (ListContainersRes, error) {
if s.GetMode().NoMetabase() {
return ListContainersRes{}, ErrDegradedMode
}
containers, err := s.metaBase.Containers()
if err != nil {
return ListContainersRes{}, fmt.Errorf("could not get list of containers: %w", err)
}
return ListContainersRes{
containers: 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.
//
// Returns ErrEndOfListing if there are no more objects to return or count
// parameter set to zero.
func (s *Shard) ListWithCursor(prm ListWithCursorPrm) (ListWithCursorRes, error) {
if s.GetMode().NoMetabase() {
return ListWithCursorRes{}, ErrDegradedMode
}
var metaPrm meta.ListPrm
metaPrm.SetCount(prm.count)
metaPrm.SetCursor(prm.cursor)
res, err := s.metaBase.ListWithCursor(metaPrm)
if err != nil {
return ListWithCursorRes{}, fmt.Errorf("could not get list of objects: %w", err)
}
return ListWithCursorRes{
addrList: res.AddressList(),
cursor: res.Cursor(),
}, nil
}