[#1284] shard: Resolve funlen linter

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

pkg/local_object_storage/shard/control.go

@@ -99,12 +99,50 @@ func (x *metabaseSynchronizer) Init() error {
 
 // Init initializes all Shard's components.
 func (s *Shard) Init(ctx context.Context) error {
+	m := s.GetMode()
+	if err := s.initializeComponents(m); err != nil {
+		return err
+	}
+
+	s.updateMetrics(ctx)
+
+	s.gc = &gc{
+		gcCfg:       &s.gcCfg,
+		remover:     s.removeGarbage,
+		stopChannel: make(chan struct{}),
+		eventChan:   make(chan Event),
+		mEventHandler: map[eventType]*eventHandlers{
+			eventNewEpoch: {
+				cancelFunc: func() {},
+				handlers: []eventHandler{
+					s.collectExpiredLocks,
+					s.collectExpiredObjects,
+					s.collectExpiredTombstones,
+					s.collectExpiredMetrics,
+				},
+			},
+		},
+	}
+	if s.gc.metrics != nil {
+		s.gc.metrics.SetShardID(s.info.ID.String())
+	}
+
+	s.gc.init(ctx)
+
+	s.rb = newRebuilder(s.rebuildLimiter)
+	if !m.NoMetabase() {
+		s.rb.Start(ctx, s.blobStor, s.metaBase, s.log)
+	}
+	s.writecacheSealCancel.Store(dummyCancel)
+	return nil
+}
+
+func (s *Shard) initializeComponents(m mode.Mode) error {
 	type initializer interface {
 		Init() error
 	}
 
 	var components []initializer
-	m := s.GetMode()
 
 	if !m.NoMetabase() {
 		var initMetabase initializer
@@ -148,37 +186,6 @@ func (s *Shard) Init(ctx context.Context) error {
 			return fmt.Errorf("could not initialize %T: %w", component, err)
 		}
 	}
-
-	s.updateMetrics(ctx)
-
-	s.gc = &gc{
-		gcCfg:       &s.gcCfg,
-		remover:     s.removeGarbage,
-		stopChannel: make(chan struct{}),
-		eventChan:   make(chan Event),
-		mEventHandler: map[eventType]*eventHandlers{
-			eventNewEpoch: {
-				cancelFunc: func() {},
-				handlers: []eventHandler{
-					s.collectExpiredLocks,
-					s.collectExpiredObjects,
-					s.collectExpiredTombstones,
-					s.collectExpiredMetrics,
-				},
-			},
-		},
-	}
-	if s.gc.metrics != nil {
-		s.gc.metrics.SetShardID(s.info.ID.String())
-	}
-
-	s.gc.init(ctx)
-
-	s.rb = newRebuilder(s.rebuildLimiter)
-	if !m.NoMetabase() {
-		s.rb.Start(ctx, s.blobStor, s.metaBase, s.log)
-	}
-	s.writecacheSealCancel.Store(dummyCancel)
 	return nil
 }