raft/node.go
func (n *node) Tick() {
	select {
	case n.tickc <- struct{}{}:
	case <-n.done:
	default:
		n.logger.Warningf("A tick missed to fire. Node blocks too long!")
	}
}
func (n *node) Tick() {
	select {
	case n.tickc <- struct{}{}:
	case <-n.done:
	default:
		n.logger.Warningf("A tick missed to fire. Node blocks too long!")
	}
}
func ( n * node ) Tick ( ) { select { case n . tickc <- struct { } { } : case <- n . done : default : n . logger . Warningf ( " " ) } }
// Tick increments the internal logical clock for this Node. Election timeouts
// and heartbeat timeouts are in units of ticks.
Tick increments the internal logical clock for this Node . Election timeouts and heartbeat timeouts are in units of ticks .