[#1319] services/object: Remove Write method from local and remote targets

They work with prepared objects only.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

pkg/services/object/put/distributed.go

@@ -15,6 +15,11 @@ import (
 	"go.uber.org/zap"
 )
 
+type preparedObjectTarget interface {
+	WriteHeader(*objectSDK.Object) error
+	Close() (*transformer.AccessIdentifiers, error)
+}
+
 type distributedTarget struct {
 	traversal traversal
 
@@ -24,7 +29,7 @@ type distributedTarget struct {
 
 	payload []byte
 
-	nodeTargetInitializer func(nodeDesc) transformer.ObjectTarget
+	nodeTargetInitializer func(nodeDesc) preparedObjectTarget
 
 	isLocalKey func([]byte) bool
 

pkg/services/object/put/local.go

@@ -19,24 +19,14 @@ type localTarget struct {
 	storage ObjectStorage
 
 	obj *object.Object
-
-	payload []byte
 }
 
 func (t *localTarget) WriteHeader(obj *object.Object) error {
 	t.obj = obj
 
-	t.payload = make([]byte, 0, obj.PayloadSize())
-
 	return nil
 }
 
-func (t *localTarget) Write(p []byte) (n int, err error) {
-	t.payload = append(t.payload, p...)
-
-	return len(p), nil
-}
-
 func (t *localTarget) Close() (*transformer.AccessIdentifiers, error) {
 	if err := t.storage.Put(t.obj); err != nil {
 		return nil, fmt.Errorf("(%T) could not put object to local storage: %w", t, err)

pkg/services/object/put/remote.go

@@ -13,8 +13,6 @@ import (
 )
 
 type remoteTarget struct {
-	transformer.ObjectTarget
-
 	ctx context.Context
 
 	keyStorage *util.KeyStorage

pkg/services/object/put/streamer.go

@@ -184,7 +184,7 @@ func (p *Streamer) newCommonTarget(prm *PutInitPrm) transformer.ObjectTarget {
 		},
 		remotePool: p.remotePool,
 		localPool:  p.localPool,
-		nodeTargetInitializer: func(node nodeDesc) transformer.ObjectTarget {
+		nodeTargetInitializer: func(node nodeDesc) preparedObjectTarget {
 			if node.local {
 				return &localTarget{
 					storage: p.localStore,