main.go

type state struct {
	sync.RWMutex
	co2         int
	temperature float64
}

func (s *state) getCo2() int {
	s.RLock()
	defer s.RUnlock()
	return s.co2
}

func (s *state) setCo2(co2 int) {
	s.Lock()
	defer s.Unlock()
	s.co2 = co2
}

func (s *state) getTemperature() int {
	s.RLock()
	defer s.RUnlock()
	s.temperature
}

func (s *state) setTemperature(temperature int) {
	s.Lock()
	defer s.Unlock()
	s.temperature = temperature
}