[#373] blobovnizca: Add missed/fix tracing spans

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

pkg/local_object_storage/blobovnicza/iterate.go

@@ -4,8 +4,11 @@ import (
 	"context"
 	"fmt"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
 	"go.etcd.io/bbolt"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/trace"
 )
 
 func (b *Blobovnicza) iterateBuckets(tx *bbolt.Tx, f func(uint64, uint64, *bbolt.Bucket) (bool, error)) error {
@@ -119,6 +122,15 @@ type IterateRes struct {
 //
 // Handler should not retain object data. Handler must not be nil.
 func (b *Blobovnicza) Iterate(ctx context.Context, prm IteratePrm) (IterateRes, error) {
+	ctx, span := tracing.StartSpanFromContext(ctx, "Blobovnicza.Iterate",
+		trace.WithAttributes(
+			attribute.String("path", b.path),
+			attribute.Bool("decode_addresses", prm.decodeAddresses),
+			attribute.Bool("without_data", prm.withoutData),
+			attribute.Bool("ignore_errors", prm.ignoreErrors),
+		))
+	defer span.End()
+
 	var elem IterationElement
 
 	if err := b.boltDB.View(func(tx *bbolt.Tx) error {