[#366] node: Stop GC once termination signal received

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

pkg/local_object_storage/shard/gc.go

@@ -76,7 +76,7 @@ type gc struct {
 
 	workerPool util.WorkerPool
 
-	remover func()
+	remover func(context.Context)
 
 	eventChan     chan Event
 	mEventHandler map[eventType]*eventHandlers
@@ -115,7 +115,7 @@ func (gc *gc) init(ctx context.Context) {
 	}
 
 	gc.wg.Add(2)
-	go gc.tickRemover()
+	go gc.tickRemover(ctx)
 	go gc.listenEvents(ctx)
 }
 
@@ -160,7 +160,7 @@ func (gc *gc) listenEvents(ctx context.Context) {
 	}
 }
 
-func (gc *gc) tickRemover() {
+func (gc *gc) tickRemover(ctx context.Context) {
 	defer gc.wg.Done()
 
 	timer := time.NewTimer(gc.removerInterval)
@@ -178,7 +178,7 @@ func (gc *gc) tickRemover() {
 			gc.log.Debug(logs.ShardGCIsStopped)
 			return
 		case <-timer.C:
-			gc.remover()
+			gc.remover(ctx)
 			timer.Reset(gc.removerInterval)
 		}
 	}
@@ -196,8 +196,8 @@ func (gc *gc) stop() {
 // iterates over metabase and deletes objects
 // with GC-marked graves.
 // Does nothing if shard is in "read-only" mode.
-func (s *Shard) removeGarbage() {
-	ctx, cancel := context.WithCancel(context.Background())
+func (s *Shard) removeGarbage(pctx context.Context) {
+	ctx, cancel := context.WithCancel(pctx)
 	defer cancel()
 
 	s.gcCancel.Store(cancel)