lotus/blockstore/splitstore/markset.go

40 lines
934 B
Go

package splitstore
import (
"errors"
"golang.org/x/xerrors"
cid "github.com/ipfs/go-cid"
)
var errMarkSetClosed = errors.New("markset closed")
// MarkSet is an interface for tracking CIDs during chain and object walks
type MarkSet interface {
ObjectVisitor
Mark(cid.Cid) error
Has(cid.Cid) (bool, error)
Close() error
}
type MarkSetEnv interface {
// Create creates a new markset within the environment.
// name is a unique name for this markset, mapped to the filesystem in disk-backed environments
// sizeHint is a hint about the expected size of the markset
Create(name string, sizeHint int64) (MarkSet, error)
// Close closes the markset
Close() error
}
func OpenMarkSetEnv(path string, mtype string) (MarkSetEnv, error) {
switch mtype {
case "map":
return NewMapMarkSetEnv()
case "badger":
return NewBadgerMarkSetEnv(path)
default:
return nil, xerrors.Errorf("unknown mark set type %s", mtype)
}
}