[#34] services/object: Replace local placement to util

Replace local placement tool in order to reuse it in different object
services.

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

pkg/services/object/put/local.go

@@ -1,45 +1,12 @@
 package putsvc
 
 import (
-	"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
-	objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
 	"github.com/nspcc-dev/neofs-node/pkg/core/object"
 	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/localstore"
-	"github.com/nspcc-dev/neofs-node/pkg/network"
-	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
 	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/transformer"
 	"github.com/pkg/errors"
 )
 
-type localPlacement struct {
-	builder placement.Builder
-
-	localAddrSrc network.LocalAddressSource
-}
-
-func (p *localPlacement) BuildPlacement(addr *objectSDK.Address, policy *netmap.PlacementPolicy) ([]netmap.Nodes, error) {
-	vs, err := p.builder.BuildPlacement(addr, policy)
-	if err != nil {
-		return nil, errors.Wrapf(err, "(%T) could not build object placement", p)
-	}
-
-	for i := range vs {
-		for j := range vs[i] {
-			addr, err := network.AddressFromString(vs[i][j].NetworkAddress())
-			if err != nil {
-				// TODO: log error
-				continue
-			}
-
-			if network.IsLocalAddress(p.localAddrSrc, addr) {
-				return []netmap.Nodes{{vs[i][j]}}, nil
-			}
-		}
-	}
-
-	return nil, errors.Errorf("(%T) local node is outside of object placement", p)
-}
-
 type localTarget struct {
 	storage *localstore.Storage
 

pkg/services/object/put/streamer.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/nspcc-dev/neofs-node/pkg/core/netmap"
 	"github.com/nspcc-dev/neofs-node/pkg/network"
+	"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
 	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
 	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/transformer"
 	"github.com/pkg/errors"
@@ -107,10 +108,7 @@ func (p *Streamer) preparePrm(prm *PutInitPrm) error {
 		prm.traverseOpts = append(prm.traverseOpts, placement.SuccessAfter(1))
 
 		// use local-only placement builder
-		builder = &localPlacement{
-			builder:      placement.NewNetworkMapBuilder(nm),
-			localAddrSrc: p.localAddrSrc,
-		}
+		builder = util.NewLocalPlacement(placement.NewNetworkMapBuilder(nm), p.localAddrSrc)
 	}
 
 	// set placement builder

pkg/services/object/util/local.go

@@ -0,0 +1,45 @@
+package util
+
+import (
+	"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
+	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+	"github.com/nspcc-dev/neofs-node/pkg/network"
+	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
+	"github.com/pkg/errors"
+)
+
+type localPlacement struct {
+	builder placement.Builder
+
+	localAddrSrc network.LocalAddressSource
+}
+
+func NewLocalPlacement(b placement.Builder, s network.LocalAddressSource) placement.Builder {
+	return &localPlacement{
+		builder:      b,
+		localAddrSrc: s,
+	}
+}
+
+func (p *localPlacement) BuildPlacement(addr *object.Address, policy *netmap.PlacementPolicy) ([]netmap.Nodes, error) {
+	vs, err := p.builder.BuildPlacement(addr, policy)
+	if err != nil {
+		return nil, errors.Wrapf(err, "(%T) could not build object placement", p)
+	}
+
+	for i := range vs {
+		for j := range vs[i] {
+			addr, err := network.AddressFromString(vs[i][j].NetworkAddress())
+			if err != nil {
+				// TODO: log error
+				continue
+			}
+
+			if network.IsLocalAddress(p.localAddrSrc, addr) {
+				return []netmap.Nodes{{vs[i][j]}}, nil
+			}
+		}
+	}
+
+	return nil, errors.Errorf("(%T) local node is outside of object placement", p)
+}