event

type Batch interface {
	Events() []Event
	SetEvents(events []Event)
	ACK()
	Drop()
	Retry()
	RetryEvents(events []Event)
	Cancelled()
	CancelledEvents(events []Event)
}

type Event struct {
	Timestamp time.Time
	Meta      MapStr
	Fields    MapStr
	Private   interface{}
}

type MapStr map[string]interface{}