// GetChecksumInfo - get checksum of a part.
func (e ErasureInfo) GetChecksumInfo(partNumber int) (ckSum ChecksumInfo) {
	for _, sum := range e.Checksums {
		if sum.PartNumber == partNumber {
			// Return the checksum
			return sum
		}
	}
	return ChecksumInfo{Algorithm: DefaultBitrotAlgorithm}
}

// ShardFileSize - returns final erasure size from original size.
func (e ErasureInfo) ShardFileSize(totalLength int64) int64 {

	ExistingObjectReplicationType
	ResyncReplicationType
	AllReplicationType
)

// Valid returns true if replication type is set
func (t Type) Valid() bool {
	return t > 0
}

// IsDataReplication returns true if content being replicated
func (t Type) IsDataReplication() bool {
	switch t {
	case ObjectReplicationType, HealReplicationType, ExistingObjectReplicationType:
		return true
	}

// A goroutine will be started and run until the provided context is canceled.
func (r *RingBuffer) WithCancel(ctx context.Context) *RingBuffer {
	go func() {
		select {
		case <-ctx.Done():
			r.CloseWithError(ctx.Err())
		}
	}()
	return r
}

func (r *RingBuffer) setErr(err error, locked bool) error {
	if !locked {
		r.mu.Lock()
		defer r.mu.Unlock()
	}

	}
	t.Logf("Created temporary dir: %v", tempDir)
	return tempDir
}

func ls(dir string, t *testing.T) []string {
	files, err := os.ReadDir(dir)
	t.Helper()
	if err != nil {
		t.Fatalf("Failed to list files, err: %v", err)
	}
	return slices.Map(files, func(e os.DirEntry) string {
		return e.Name()
	})
}

func cp(src, dest string, t *testing.T) {
	t.Helper()
	data, err := os.ReadFile(src)

// This can be used for goroutines that live beyond the parent context.
func bgContext(parent context.Context) context.Context {
	return bgCtx{parent: parent}
}

type bgCtx struct {
	parent context.Context
}

func (a bgCtx) Done() <-chan struct{} {
	return nil
}

func (a bgCtx) Err() error {
	return nil
}

func (a bgCtx) Deadline() (deadline time.Time, ok bool) {

	// RetCompliance - compliance mode.
	RetCompliance RetMode = "COMPLIANCE"
)

// Valid - returns if retention mode is valid
func (r RetMode) Valid() bool {
	switch r {
	case RetGovernance, RetCompliance:
		return true
	}
	return false
}

func parseRetMode(modeStr string) (mode RetMode) {
	switch strings.ToUpper(modeStr) {
	case "GOVERNANCE":
		mode = RetGovernance
	case "COMPLIANCE":

type mockNetNs struct {
	path string
}

func (ns *mockNetNs) Do(toRun func(ns.NetNS) error) error {
	return toRun(ns)
}

func (*mockNetNs) Set() error {
	return nil
}

func (ns *mockNetNs) Path() string {
	return ns.path
}

func (*mockNetNs) Fd() uintptr {
	return 0
}

func (*mockNetNs) Close() error {
	return nil
}

type netNsFunc func(nspath string) (ns.NetNS, error)

// slice.
func (r *Reader) Len() int {
	if r.i >= int64(len(r.s)) {
		return 0
	}
	return int(int64(len(r.s)) - r.i)
}

// Size returns the original length of the underlying byte slice.
// Size is the number of bytes available for reading via [Reader.ReadAt].
// The result is unaffected by any method calls except [Reader.Reset].
func (r *Reader) Size() int64 { return int64(len(r.s)) }

	"github.com/tinylib/msgp/msgp"
	"github.com/zeebo/xxh3"
)

func gridLogIf(ctx context.Context, err error, errKind ...interface{}) {
	logger.LogIf(ctx, "grid", err, errKind...)
}

func gridLogIfNot(ctx context.Context, err error, ignored ...error) {
	logger.LogIfNot(ctx, "grid", err, ignored...)
}

func gridLogOnceIf(ctx context.Context, err error, id string, errKind ...interface{}) {

//
//msgp:ignore versionsSorter
type versionsSorter []FileInfo

func (v versionsSorter) reverse() {
	sort.Slice(v, func(i, j int) bool {
		return v[i].ModTime.Before(v[j].ModTime)
	})
}

func (set *erasureObjects) listObjectsToDecommission(ctx context.Context, bi decomBucketInfo, fn func(entry metaCacheEntry)) error {
	disks, _ := set.getOnlineDisksWithHealing(false)
	if len(disks) == 0 {