From 13e74fce8a993e496067c07357cbc19c5bc1941a Mon Sep 17 00:00:00 2001
From: Leonard Lyubich <leonard@nspcc.ru>
Date: Fri, 17 Jun 2022 01:00:38 +0300
Subject: [PATCH] [#1513] ir/settlement: Do not allocate intermediate slice of
 nodes

After recent changes `buildContainer` method returns two-dimensional
slice of `NodeInfo` so there is no need to flatten it to build slice of
`common.NodeInfo`.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
---
 pkg/innerring/settlement.go | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/pkg/innerring/settlement.go b/pkg/innerring/settlement.go
index dbb6a8503..0a0033daa 100644
--- a/pkg/innerring/settlement.go
+++ b/pkg/innerring/settlement.go
@@ -19,7 +19,6 @@ import (
 	auditClient "github.com/nspcc-dev/neofs-node/pkg/morph/client/audit"
 	balanceClient "github.com/nspcc-dev/neofs-node/pkg/morph/client/balance"
 	containerClient "github.com/nspcc-dev/neofs-node/pkg/morph/client/container"
-	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
 	"github.com/nspcc-dev/neofs-node/pkg/util/logger"
 	auditAPI "github.com/nspcc-dev/neofs-sdk-go/audit"
 	containerAPI "github.com/nspcc-dev/neofs-sdk-go/container"
@@ -173,13 +172,20 @@ func (s settlementDeps) ContainerNodes(e uint64, cid cid.ID) ([]common.NodeInfo,
 		return nil, err
 	}
 
-	ns := placement.FlattenNodes(cn)
-	res := make([]common.NodeInfo, 0, len(ns))
+	var sz int
 
-	for i := range ns {
-		res = append(res, &nodeInfoWrapper{
-			ni: ns[i],
-		})
+	for i := range cn {
+		sz += len(cn[i])
+	}
+
+	res := make([]common.NodeInfo, 0, sz)
+
+	for i := range cn {
+		for j := range cn[i] {
+			res = append(res, nodeInfoWrapper{
+				ni: cn[i][j],
+			})
+		}
 	}
 
 	return res, nil