[#373] blobovniczatree: Add metrics

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

pkg/local_object_storage/blobstor/blobovniczatree/delete.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/hex"
 	"path/filepath"
+	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobovnicza"
@@ -21,8 +22,17 @@ import (
 // If blobocvnicza ID is specified, only this blobovnicza is processed.
 // Otherwise, all Blobovniczas are processed descending weight.
 func (b *Blobovniczas) Delete(ctx context.Context, prm common.DeletePrm) (res common.DeleteRes, err error) {
+	var (
+		success   = false
+		startedAt = time.Now()
+	)
+	defer func() {
+		b.metrics.Delete(time.Since(startedAt), success, prm.StorageID != nil)
+	}()
+
 	ctx, span := tracing.StartSpanFromContext(ctx, "Blobovniczas.Delete",
 		trace.WithAttributes(
+			attribute.String("path", b.rootPath),
 			attribute.String("address", prm.Address.EncodeToString()),
 			attribute.String("storage_id", hex.EncodeToString(prm.StorageID)),
 		))
@@ -42,7 +52,10 @@ func (b *Blobovniczas) Delete(ctx context.Context, prm common.DeletePrm) (res co
 			return res, err
 		}
 
-		return b.deleteObject(ctx, blz, bPrm)
+		if res, err = b.deleteObject(ctx, blz, bPrm); err == nil {
+			success = true
+		}
+		return res, err
 	}
 
 	activeCache := make(map[string]struct{})
@@ -78,6 +91,7 @@ func (b *Blobovniczas) Delete(ctx context.Context, prm common.DeletePrm) (res co
 		// not found in any blobovnicza
 		return common.DeleteRes{}, logicerr.Wrap(apistatus.ObjectNotFound{})
 	}
+	success = err == nil
 
 	return
 }