}, index)
		}

		rmDisks := make(map[string]string, len(disks))
		for index, err := range g.Wait() {
			var errStr, diskName string
			if err != nil {
				errStr = err.Error()
			} else {
				errStr = "<nil>"
			}
			if disks[index] != nil {
				diskName = disks[index].String()
			} else {
				diskName = fmt.Sprintf("disk-%d", index)
			}

	}
}

func (m *batchJobMetrics) delete(jobID string) {
	m.Lock()
	defer m.Unlock()

	delete(m.metrics, jobID)
}

func (m *batchJobMetrics) save(jobID string, ri *batchJobInfo) {
	m.Lock()
	defer m.Unlock()

	m.metrics[jobID] = ri.clone()
}

type objTraceInfoer interface {
	TraceObjName() string
	TraceVersionID() string
}

// APIError structure
type APIError struct {
	Code           string
	Description    string
	HTTPStatusCode int
	ObjectSize     string
	RangeRequested string
}

// APIErrorResponse - error response format
type APIErrorResponse struct {
	XMLName          xml.Name `xml:"Error" json:"-"`
	Code             string
	Message          string
	Key              string `xml:"Key,omitempty" json:"Key,omitempty"`