From af758ba25f42eda37fb7ed8d93b7cfad212e4346 Mon Sep 17 00:00:00 2001
From: Dmitrii Stepanov <d.stepanov@yadro.com>
Date: Wed, 22 Jan 2025 11:39:24 +0300
Subject: [PATCH] Revert "[#1367] fstree: Add IterateInfo method"

This reverts commit 2dd3a6f7a85800452f38ddb3127dea455b6366dc.
---
 .../blobstor/fstree/fstree.go                 | 75 -------------------
 .../blobstor/fstree/metrics.go                |  2 -
 pkg/local_object_storage/metrics/fstree.go    |  4 -
 3 files changed, 81 deletions(-)

diff --git a/pkg/local_object_storage/blobstor/fstree/fstree.go b/pkg/local_object_storage/blobstor/fstree/fstree.go
index dc7949e5d..d480136a7 100644
--- a/pkg/local_object_storage/blobstor/fstree/fstree.go
+++ b/pkg/local_object_storage/blobstor/fstree/fstree.go
@@ -222,81 +222,6 @@ func (t *FSTree) iterate(ctx context.Context, depth uint64, curPath []string, pr
 	return nil
 }
 
-type ObjectInfo struct {
-	Address  oid.Address
-	DataSize uint64
-}
-type IterateInfoHandler func(ObjectInfo) error
-
-func (t *FSTree) IterateInfo(ctx context.Context, handler IterateInfoHandler) error {
-	var (
-		err       error
-		startedAt = time.Now()
-	)
-	defer func() {
-		t.metrics.IterateInfo(time.Since(startedAt), err == nil)
-	}()
-	_, span := tracing.StartSpanFromContext(ctx, "FSTree.IterateInfo")
-	defer span.End()
-
-	return t.iterateInfo(ctx, 0, []string{t.RootPath}, handler)
-}
-
-func (t *FSTree) iterateInfo(ctx context.Context, depth uint64, curPath []string, handler IterateInfoHandler) error {
-	curName := strings.Join(curPath[1:], "")
-	dirPath := filepath.Join(curPath...)
-	entries, err := os.ReadDir(dirPath)
-	if err != nil {
-		return fmt.Errorf("read fstree dir '%s': %w", dirPath, err)
-	}
-
-	isLast := depth >= t.Depth
-	l := len(curPath)
-	curPath = append(curPath, "")
-
-	for i := range entries {
-		select {
-		case <-ctx.Done():
-			return ctx.Err()
-		default:
-		}
-		curPath[l] = entries[i].Name()
-
-		if !isLast && entries[i].IsDir() {
-			err := t.iterateInfo(ctx, depth+1, curPath, handler)
-			if err != nil {
-				return err
-			}
-		}
-
-		if depth != t.Depth {
-			continue
-		}
-
-		addr, err := addressFromString(curName + entries[i].Name())
-		if err != nil {
-			continue
-		}
-		info, err := entries[i].Info()
-		if err != nil {
-			if os.IsNotExist(err) {
-				continue
-			}
-			return err
-		}
-
-		err = handler(ObjectInfo{
-			Address:  addr,
-			DataSize: uint64(info.Size()),
-		})
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
 func (t *FSTree) treePath(addr oid.Address) string {
 	sAddr := stringifyAddress(addr)
 
diff --git a/pkg/local_object_storage/blobstor/fstree/metrics.go b/pkg/local_object_storage/blobstor/fstree/metrics.go
index 4241beec9..10de935eb 100644
--- a/pkg/local_object_storage/blobstor/fstree/metrics.go
+++ b/pkg/local_object_storage/blobstor/fstree/metrics.go
@@ -13,7 +13,6 @@ type Metrics interface {
 	Close()
 
 	Iterate(d time.Duration, success bool)
-	IterateInfo(d time.Duration, success bool)
 	Delete(d time.Duration, success bool)
 	Exists(d time.Duration, success bool)
 	Put(d time.Duration, size int, success bool)
@@ -28,7 +27,6 @@ func (m *noopMetrics) SetParentID(string)                {}
 func (m *noopMetrics) SetMode(mode.ComponentMode)        {}
 func (m *noopMetrics) Close()                            {}
 func (m *noopMetrics) Iterate(time.Duration, bool)       {}
-func (m *noopMetrics) IterateInfo(time.Duration, bool)   {}
 func (m *noopMetrics) Delete(time.Duration, bool)        {}
 func (m *noopMetrics) Exists(time.Duration, bool)        {}
 func (m *noopMetrics) Put(time.Duration, int, bool)      {}
diff --git a/pkg/local_object_storage/metrics/fstree.go b/pkg/local_object_storage/metrics/fstree.go
index d93363fa3..76822ac2c 100644
--- a/pkg/local_object_storage/metrics/fstree.go
+++ b/pkg/local_object_storage/metrics/fstree.go
@@ -38,10 +38,6 @@ func (m *fstreeMetrics) Iterate(d time.Duration, success bool) {
 	m.m.MethodDuration(m.shardID, m.path, "Iterate", d, success)
 }
 
-func (m *fstreeMetrics) IterateInfo(d time.Duration, success bool) {
-	m.m.MethodDuration(m.shardID, m.path, "IterateInfo", d, success)
-}
-
 func (m *fstreeMetrics) Delete(d time.Duration, success bool) {
 	m.m.MethodDuration(m.shardID, m.path, "Delete", d, success)
 }