err = readDirectoryHeader(f, buf)
		if err == ErrFormat || err == io.ErrUnexpectedEOF {
			break
		}
		if err != nil {
			return err
		}
		f.headerOffset += r.baseOffset
		r.File = append(r.File, f)
	}
	if uint16(len(r.File)) != uint16(end.directoryRecords) { // only compare 16 bits here
		// Return the readDirectoryHeader error if we read
		// the wrong number of directory entries.
		return err
	}

Здесь функция-обработчик события `shutdown` запишет строку текста `"Application shutdown"` в файл `log.txt`.

/// info | Информация

В функции `open()` параметр `mode="a"` означает «добавление» (append), то есть строка будет добавлена в конец файла, без перезаписи предыдущего содержимого.

///

/// tip | Совет

		Bucket:          rs.Bucket,
		Object:          rs.Object,
		NumBuckets:      int64(rs.TotBuckets),
	}
	for b, st := range rs.BucketStatuses {
		if st == ResyncFailed {
			m.FailedBuckets = append(m.FailedBuckets, b)
		}
	}
	return &m
}

// save in-memory stats to disk
func (sm *siteResyncMetrics) save(ctx context.Context) {
	sTimer := time.NewTimer(siteResyncSaveInterval)
	defer sTimer.Stop()

	if opts == nil {
		opts = &validateReplicationDestinationOptions{}
	}
	var arns []string
	if rCfg.RoleArn != "" {
		arns = append(arns, rCfg.RoleArn)
	} else {
		for _, rule := range rCfg.Rules {
			arns = append(arns, rule.Destination.String())
		}
	}
	var sameTarget bool
	for _, arnStr := range arns {
		arn, err := madmin.ParseARN(arnStr)
		if err != nil {

			sum  = make([]byte, 0, hash.Size())
		)
		for i := 0; i < hash.Size()*hash.BlockSize(); i += hash.Size() {
			hash.Write(msg)
			sum = hash.Sum(sum[:0])
			msg = append(msg, sum...)
			hash.Reset()
		}
		if !bytes.Equal(sum, checksum) {
			logger.Fatal(errSelfTestFailure, fmt.Sprintf("bitrot: %v selftest checksum mismatch: got %x - want %x", algorithm, sum, checksum))
		}
	}

			if afterParenthesis {
				processValue(builder, expr.Vars[idx])
			} else {
				builder.AddVar(builder, expr.Vars[idx])
			}

			idx++
		} else if inName {
			name = append(name, v)
		} else {
			if v == '(' {
				afterParenthesis = true
			} else {
				afterParenthesis = false
			}
			builder.WriteByte(v)
		}
	}

	if inName {

	sconfig.Metadata.Retry.Backoff = (10 * time.Second)
	sconfig.Metadata.RefreshFrequency = (15 * time.Minute)

	h.config = sconfig

	var brokers []string
	for _, broker := range h.kconfig.Brokers {
		brokers = append(brokers, broker.String())
	}

	client, err := sarama.NewClient(brokers, sconfig)
	if err != nil {
		return err
	}

	producer, err := sarama.NewSyncProducerFromClient(client)
	if err != nil {

			}
		}

		fallthrough
	default:
		selectedUpdate := len(tx.Statement.Selects) != 0
		// when updating, use all fields including those zero-value fields
		if !selectedUpdate {
			tx.Statement.Selects = append(tx.Statement.Selects, "*")
		}

		updateTx := tx.callbacks.Update().Execute(tx.Session(&Session{Initialized: true}))

		if updateTx.Error == nil && updateTx.RowsAffected == 0 && !updateTx.DryRun && !selectedUpdate {

		}
		if !v.wantValid {
			continue
		}
		gotAligned := alignSparseEntries(append([]sparseEntry{}, v.in...), v.size)
		if !slices.Equal(gotAligned, v.wantAligned) {
			t.Errorf("test %d, alignSparseEntries():\ngot  %v\nwant %v", i, gotAligned, v.wantAligned)
		}
		gotInverted := invertSparseEntries(append([]sparseEntry{}, v.in...), v.size)
		if !slices.Equal(gotInverted, v.wantInverted) {

		return err
	}
	sc.Parity = s.Parity
	return nil
}

// MarshalText - marshals storage class string.
func (sc *StorageClass) MarshalText() ([]byte, error) {
	if sc.Parity != 0 {
		return fmt.Appendf(nil, "%s:%d", schemePrefix, sc.Parity), nil
	}
	return []byte{}, nil
}

func (sc *StorageClass) String() string {
	if sc.Parity != 0 {
		return fmt.Sprintf("%s:%d", schemePrefix, sc.Parity)
	}