tracker

type CountingTracker interface {
	Add(ids.ShortID)                               // increments total count taken by ID
	AddPool(ids.ShortID)                           // increments pool messages taken by ID
	Remove(ids.ShortID)                            // removes a message taken by ID
	OutstandingCount(ids.ShortID) (uint32, uint32) // returns the total count and pool count
	PoolCount() uint32                             // returns the total count of messages taken from the pool
}

type TimeTracker interface {
	UtilizeTime(ids.ShortID, time.Time, time.Time)
	Utilization(ids.ShortID, time.Time) float64
	CumulativeUtilization(time.Time) float64
	Len() int
	EndInterval(time.Time)
}