[#199] putsvc: Refactor placement iterator

Resolve funlen linter for iteratePlacement method

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/services/object/put/distributed.go

@@ -164,7 +164,6 @@ func (t *distributedTarget) sendObject(node nodeDesc) error {
 	return nil
 }
 
-// nolint: funlen
 func (t *distributedTarget) iteratePlacement(f func(nodeDesc) error) (*transformer.AccessIdentifiers, error) {
 	id, _ := t.obj.ID()
 
@@ -175,16 +174,42 @@ func (t *distributedTarget) iteratePlacement(f func(nodeDesc) error) (*transform
 		return nil, fmt.Errorf("(%T) could not create object placement traverser: %w", t, err)
 	}
 
-	var resErr atomic.Value
+	resErr := &atomic.Value{}
 
-loop:
 	for {
 		addrs := traverser.Next()
 		if len(addrs) == 0 {
 			break
 		}
 
-		wg := new(sync.WaitGroup)
+		if t.iterateAddresses(traverser, addrs, f, resErr) {
+			break
+		}
+	}
+
+	if !traverser.Success() {
+		var err errIncompletePut
+		err.singleErr, _ = resErr.Load().(error)
+		return nil, err
+	}
+
+	// perform additional container broadcast if needed
+	if t.traversal.submitPrimaryPlacementFinish() {
+		_, err = t.iteratePlacement(f)
+		if err != nil {
+			t.log.Error("additional container broadcast failure", zap.Error(err))
+			// we don't fail primary operation because of broadcast failure
+		}
+	}
+
+	id, _ = t.obj.ID()
+
+	return new(transformer.AccessIdentifiers).
+		WithSelfID(id), nil
+}
+
+func (t *distributedTarget) iterateAddresses(traverser *placement.Traverser, addrs []placement.Node, f func(nodeDesc) error, resErr *atomic.Value) bool {
+	wg := &sync.WaitGroup{}
 
 	for i := range addrs {
 		if t.traversal.processed(addrs[i]) {
@@ -195,15 +220,11 @@ loop:
 		wg.Add(1)
 
 		addr := addrs[i]
-
 		isLocal := t.isLocalKey(addr.PublicKey())
 
-			var workerPool util.WorkerPool
-
+		workerPool := t.remotePool
 		if isLocal {
 			workerPool = t.localPool
-			} else {
-				workerPool = t.remotePool
 		}
 
 		if err := workerPool.Submit(func() {
@@ -226,38 +247,12 @@ loop:
 			traverser.SubmitSuccess()
 		}); err != nil {
 			wg.Done()
-
 			svcutil.LogWorkerPoolError(t.log, "PUT", err)
-
-				break loop
+			return true
 		}
 	}
 
 	wg.Wait()
-	}
 
-	if !traverser.Success() {
-		var err errIncompletePut
-
-		err.singleErr, _ = resErr.Load().(error)
-
-		return nil, err
-	}
-
-	// perform additional container broadcast if needed
-	if t.traversal.submitPrimaryPlacementFinish() {
-		_, err = t.iteratePlacement(f)
-		if err != nil {
-			t.log.Error("additional container broadcast failure",
-				zap.Error(err),
-			)
-
-			// we don't fail primary operation because of broadcast failure
-		}
-	}
-
-	id, _ = t.obj.ID()
-
-	return new(transformer.AccessIdentifiers).
-		WithSelfID(id), nil
+	return false
 }