ranging over channel after selecting from it

aggregator.go

	for {
		select {
		case elem := <-a.traffChan:
			a.aggregateTraff(elem.header, elem.body)
			//!TODO maybe return elem to the pool
		case elem := <-a.hitChan:
			a.aggregateHit(elem.header, elem.body)
			//!TODO maybe return elem to the pool
		case <-a.stopChan:
			close(a.traffChan)
			for elem := range a.traffChan {
				a.aggregateTraff(elem.header, elem.body)
			}
			close(a.hitChan)
			for elem := range a.hitChan {
				a.aggregateHit(elem.header, elem.body)
			}
			a.aggregationStopped <- struct{}{}
			return
		}
	}