[#1413] engine: Remove error counting methods from Shard

All error counting and hangling logic is present on the engine level.
Currently, we pass engine metrics with shard ID metric to shard, then
export 3 methods to manipulate these metrics.
In this commits all methods are removed and error counter is tracked on
the engine level exlusively.

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

pkg/local_object_storage/engine/engine.go

@@ -144,7 +144,7 @@ func (e *StorageEngine) reportShardError(
 	}
 
 	errCount := sh.errorCount.Add(1)
-	sh.Shard.IncErrorCounter()
+	e.metrics.IncErrorCounter(sh.ID().String())
 
 	sid := sh.ID()
 	e.log.Warn(msg, append([]zap.Field{

pkg/local_object_storage/engine/shards.go

@@ -217,7 +217,7 @@ func (e *StorageEngine) removeShards(ids ...string) {
 			continue
 		}
 
-		sh.DeleteShardMetrics()
+		e.metrics.DeleteShardMetrics(id)
 
 		ss = append(ss, sh)
 		delete(e.shards, id)
@@ -318,7 +318,7 @@ func (e *StorageEngine) SetShardMode(id *shard.ID, m mode.Mode, resetErrorCounte
 		if id.String() == shID {
 			if resetErrorCounter {
 				sh.errorCount.Store(0)
-				sh.Shard.ClearErrorCounter()
+				e.metrics.ClearErrorCounter(shID)
 			}
 			return sh.SetMode(m)
 		}
@@ -422,7 +422,7 @@ func (e *StorageEngine) deleteShards(ids []*shard.ID) ([]hashedShard, error) {
 	for _, sh := range ss {
 		idStr := sh.ID().String()
 
-		sh.DeleteShardMetrics()
+		e.metrics.DeleteShardMetrics(idStr)
 
 		delete(e.shards, idStr)
 

pkg/local_object_storage/shard/metrics.go

@@ -24,12 +24,6 @@ type MetricsWriter interface {
 	SetShardID(id string)
 	// SetReadonly must set shard mode.
 	SetMode(mode mode.Mode)
-	// IncErrorCounter increment error counter.
-	IncErrorCounter()
-	// ClearErrorCounter clear error counter.
-	ClearErrorCounter()
-	// DeleteShardMetrics deletes shard metrics from registry.
-	DeleteShardMetrics()
 	// SetContainerObjectsCount sets container object count.
 	SetContainerObjectsCount(cnrID string, objectType string, value uint64)
 	// IncContainerObjectsCount increments container object count.
@@ -57,9 +51,6 @@ func (noopMetrics) AddToPayloadSize(int64)                          {}
 func (noopMetrics) IncObjectCounter(string)                         {}
 func (noopMetrics) SetShardID(string)                               {}
 func (noopMetrics) SetMode(mode.Mode)                               {}
-func (noopMetrics) IncErrorCounter()                                {}
-func (noopMetrics) ClearErrorCounter()                              {}
-func (noopMetrics) DeleteShardMetrics()                             {}
 func (noopMetrics) SetContainerObjectsCount(string, string, uint64) {}
 func (noopMetrics) IncContainerObjectsCount(string, string)         {}
 func (noopMetrics) SubContainerObjectsCount(string, string, uint64) {}

pkg/local_object_storage/shard/shard.go

@@ -494,18 +494,6 @@ func (s *Shard) setContainerObjectsCount(cnr string, typ string, v uint64) {
 	}
 }
 
-func (s *Shard) IncErrorCounter() {
-	s.cfg.metricsWriter.IncErrorCounter()
-}
-
-func (s *Shard) ClearErrorCounter() {
-	s.cfg.metricsWriter.ClearErrorCounter()
-}
-
-func (s *Shard) DeleteShardMetrics() {
-	s.cfg.metricsWriter.DeleteShardMetrics()
-}
-
 func (s *Shard) SetEvacuationInProgress(val bool) {
 	s.m.Lock()
 	defer s.m.Unlock()