Remove outdated code of metabase and localstore

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/local_object_storage/metabase/get.go

@@ -1,43 +1,96 @@
 package meta
 
 import (
+	"fmt"
+
+	"github.com/nspcc-dev/neofs-api-go/pkg/container"
 	objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
 	"github.com/nspcc-dev/neofs-node/pkg/core/object"
 	"go.etcd.io/bbolt"
 )
 
 // Get returns object header for specified address.
-func (db *DB) Get(addr *objectSDK.Address) (*object.Object, error) {
-	var obj *object.Object
-
-	if err := db.boltDB.View(func(tx *bbolt.Tx) error {
-		addrKey := addressKey(addr)
-
-		// check if object marked as deleted
-		if objectRemoved(tx, addrKey) {
-			return object.ErrNotFound
-		}
-
-		primaryBucket := tx.Bucket(primaryBucket)
-		if primaryBucket == nil {
-			return object.ErrNotFound
-		}
-
-		data := primaryBucket.Get(addrKey)
-		if data == nil {
-			return object.ErrNotFound
-		}
-
-		var err error
-
-		obj = object.New()
-
-		err = obj.Unmarshal(data)
+func (db *DB) Get(addr *objectSDK.Address) (obj *object.Object, err error) {
+	err = db.boltDB.View(func(tx *bbolt.Tx) error {
+		obj, err = db.get(tx, addr, true)
 
 		return err
-	}); err != nil {
+	})
+
+	return obj, err
+}
+
+func (db *DB) get(tx *bbolt.Tx, addr *objectSDK.Address, checkGraveyard bool) (*object.Object, error) {
+	obj := object.New()
+	key := objectKey(addr.ObjectID())
+	cid := addr.ContainerID()
+
+	if checkGraveyard && inGraveyard(tx, addr) {
+		return nil, object.ErrAlreadyRemoved
+	}
+
+	// check in primary index
+	data := getFromBucket(tx, primaryBucketName(cid), key)
+	if len(data) != 0 {
+		return obj, obj.Unmarshal(data)
+	}
+
+	// if not found then check in tombstone index
+	data = getFromBucket(tx, tombstoneBucketName(cid), key)
+	if len(data) != 0 {
+		return obj, obj.Unmarshal(data)
+	}
+
+	// if not found then check in storage group index
+	data = getFromBucket(tx, storageGroupBucketName(cid), key)
+	if len(data) != 0 {
+		return obj, obj.Unmarshal(data)
+	}
+
+	// if not found then check if object is a virtual
+	return getVirtualObject(tx, cid, key)
+}
+
+func getFromBucket(tx *bbolt.Tx, name, key []byte) []byte {
+	bkt := tx.Bucket(name)
+	if bkt == nil {
+		return nil
+	}
+
+	return bkt.Get(key)
+}
+
+func getVirtualObject(tx *bbolt.Tx, cid *container.ID, key []byte) (*object.Object, error) {
+	parentBucket := tx.Bucket(parentBucketName(cid))
+	if parentBucket == nil {
+		return nil, object.ErrNotFound
+	}
+
+	relativeLst, err := decodeList(parentBucket.Get(key))
+	if err != nil {
 		return nil, err
 	}
 
-	return obj, nil
+	if len(relativeLst) == 0 { // this should never happen though
+		return nil, object.ErrNotFound
+	}
+
+	// pick last item, for now there is not difference which address to pick
+	// but later list might be sorted so first or last value can be more
+	// prioritized to choose
+	virtualOID := relativeLst[len(relativeLst)-1]
+	data := getFromBucket(tx, primaryBucketName(cid), virtualOID)
+
+	child := object.New()
+
+	err = child.Unmarshal(data)
+	if err != nil {
+		return nil, fmt.Errorf("can't unmarshal child with parent: %w", err)
+	}
+
+	if child.GetParent() == nil { // this should never happen though
+		return nil, object.ErrNotFound
+	}
+
+	return child.GetParent(), nil
 }