[#864] engine: Drop container size metric if container deleted

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

pkg/local_object_storage/shard/container.go

@@ -1,9 +1,13 @@
 package shard
 
 import (
+	"context"
 	"fmt"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/trace"
 )
 
 type ContainerSizePrm struct {
@@ -39,3 +43,25 @@ func (s *Shard) ContainerSize(prm ContainerSizePrm) (ContainerSizeRes, error) {
 		size: size,
 	}, nil
 }
+
+func (s *Shard) DeleteContainerSize(ctx context.Context, id cid.ID) error {
+	ctx, span := tracing.StartSpanFromContext(ctx, "Shard.DeleteContainerSize",
+		trace.WithAttributes(
+			attribute.String("shard_id", s.ID().String()),
+			attribute.Stringer("container_id", id),
+		))
+	defer span.End()
+
+	s.m.RLock()
+	defer s.m.RUnlock()
+
+	if s.info.Mode.ReadOnly() {
+		return ErrReadOnlyMode
+	}
+
+	if s.info.Mode.NoMetabase() {
+		return ErrDegradedMode
+	}
+
+	return s.metaBase.DeleteContainerSize(ctx, id)
+}