[#9999] adm: Add dry-run flag to zombie scan command

This allows to just print object addresses that should be moved to quarantine.

Change-Id: I551979d8bffaf45fe21d92f6edadfaadcb5d6e25
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

cmd/frostfs-adm/internal/modules/maintenance/zombie/root.go

@@ -18,6 +18,8 @@ const (
 	walletFlagUsage     = "Path to the wallet or binary key"
 	addressFlag         = "address"
 	addressFlagUsage    = "Address of wallet account"
+	dryRunFlag          = "dry-run"
+	dryRunFlagUsage     = "Print addresses of objects - candidates for quarantine without actually moving"
 )
 
 var (
@@ -36,6 +38,7 @@ var (
 			_ = viper.BindPFlag(walletFlag, cmd.Flags().Lookup(walletFlag))
 			_ = viper.BindPFlag(addressFlag, cmd.Flags().Lookup(addressFlag))
 			_ = viper.BindPFlag(flagBatchSize, cmd.Flags().Lookup(flagBatchSize))
+			_ = viper.BindPFlag(dryRunFlag, cmd.Flags().Lookup(dryRunFlag))
 		},
 		Run: scan,
 	}
@@ -92,6 +95,7 @@ func initScanCmd() {
 	scanCmd.Flags().Uint32(flagBatchSize, 1000, flagBatchSizeUsage)
 	scanCmd.Flags().StringP(walletFlag, walletFlagShorthand, "", walletFlagUsage)
 	scanCmd.Flags().String(addressFlag, "", addressFlagUsage)
+	scanCmd.Flags().Bool(dryRunFlag, false, dryRunFlagUsage)
 }
 
 func initListCmd() {

cmd/frostfs-adm/internal/modules/maintenance/zombie/scan.go

@@ -34,6 +34,7 @@ func scan(cmd *cobra.Command, _ []string) {
 	if batchSize == 0 {
 		commonCmd.ExitOnErr(cmd, "invalid batch size: %w", errors.New("batch size must be positive value"))
 	}
+	dryRun, _ := cmd.Flags().GetBool(dryRunFlag)
 
 	storageEngine := newEngine(cmd, appCfg)
 	morphClient := createMorphClient(cmd, appCfg)
@@ -76,7 +77,7 @@ func scan(cmd *cobra.Command, _ []string) {
 	}()
 	go func() {
 		defer wg.Done()
-		err = scanStorageEngine(cmd.Context(), batchSize, storageEngine, ps, appCfg, cnrCli, nmCli, q, pk)
+		err = scanStorageEngine(cmd, batchSize, storageEngine, ps, appCfg, cnrCli, nmCli, q, pk, dryRun)
 		close(stopCh)
 	}()
 	wg.Wait()
@@ -156,8 +157,8 @@ func checkAddr(ctx context.Context, cnrCli *cntClient.Client, nmCli *netmap.Clie
 	return statusQuarantine, nil
 }
 
-func scanStorageEngine(ctx context.Context, batchSize uint32, storageEngine *engine.StorageEngine, ps *processStatus,
-	appCfg *config.Config, cnrCli *cntClient.Client, nmCli *netmap.Client, q *quarantine, pk *ecdsa.PrivateKey,
+func scanStorageEngine(cmd *cobra.Command, batchSize uint32, storageEngine *engine.StorageEngine, ps *processStatus,
+	appCfg *config.Config, cnrCli *cntClient.Client, nmCli *netmap.Client, q *quarantine, pk *ecdsa.PrivateKey, dryRun bool,
 ) error {
 	cc := cache.NewSDKClientCache(cache.ClientCacheOpts{
 		DialTimeout:      apiclientconfig.DialTimeout(appCfg),
@@ -166,6 +167,7 @@ func scanStorageEngine(ctx context.Context, batchSize uint32, storageEngine *eng
 		Key:              pk,
 		AllowExternal:    apiclientconfig.AllowExternal(appCfg),
 	})
+	ctx := cmd.Context()
 
 	var cursor *engine.Cursor
 	for {
@@ -197,30 +199,17 @@ func scanStorageEngine(ctx context.Context, batchSize uint32, storageEngine *eng
 			eg.Go(func() error {
 				result, err := checkAddr(egCtx, cnrCli, nmCli, cc, addr.Address)
 				if err != nil {
-					return fmt.Errorf("check object %s status: %w", addr, err)
+					return fmt.Errorf("check object %s status: %w", addr.Address, err)
 				}
 				ps.add(result)
 
+				if dryRun && result == statusQuarantine {
+					cmd.Println(addr)
+					return nil
+				}
+
 				if result == statusQuarantine {
-					var getPrm engine.GetPrm
-					getPrm.WithAddress(addr.Address)
-					res, err := storageEngine.Get(egCtx, getPrm)
-					if err != nil {
-						return fmt.Errorf("get object %s from storage engine: %w", addr, err)
-					}
-
-					if err := q.Put(egCtx, res.Object()); err != nil {
-						return fmt.Errorf("put object %s to quarantine: %w", addr, err)
-					}
-
-					var delPrm engine.DeletePrm
-					delPrm.WithForceRemoval()
-					delPrm.WithAddress(addr.Address)
-
-					_, err = storageEngine.Delete(egCtx, delPrm)
-					if err != nil {
-						return fmt.Errorf("delete object %s from storage engine: %w", addr, err)
-					}
+					return moveToQuarantine(egCtx, storageEngine, q, addr.Address)
 				}
 				return nil
 			})
@@ -231,6 +220,29 @@ func scanStorageEngine(ctx context.Context, batchSize uint32, storageEngine *eng
 	}
 }
 
+func moveToQuarantine(ctx context.Context, storageEngine *engine.StorageEngine, q *quarantine, addr oid.Address) error {
+	var getPrm engine.GetPrm
+	getPrm.WithAddress(addr)
+	res, err := storageEngine.Get(ctx, getPrm)
+	if err != nil {
+		return fmt.Errorf("get object %s from storage engine: %w", addr, err)
+	}
+
+	if err := q.Put(ctx, res.Object()); err != nil {
+		return fmt.Errorf("put object %s to quarantine: %w", addr, err)
+	}
+
+	var delPrm engine.DeletePrm
+	delPrm.WithForceRemoval()
+	delPrm.WithAddress(addr)
+
+	_, err = storageEngine.Delete(ctx, delPrm)
+	if err != nil {
+		return fmt.Errorf("delete object %s from storage engine: %w", addr, err)
+	}
+	return nil
+}
+
 type processStatus struct {
 	guard       sync.RWMutex
 	statusCount map[status]uint64