Method Do

kontrol/onceevery/onceevery.go:28–44

Do calls the function f if and only if Do hits the given periodic interval. In other words Do can be called multiple times during the interval but it gets called only once if it hits the interval tick. So if the interval is 10 seconds, and a total of 100 calls are made during this period, f will be

(f func())

// 10 seconds, and a total of 100 calls are made during this period, f will
// be called it every 10 seconds.
func (o *OnceEvery) Do(f func()) {
	if f == nil {
		panic("passed function is nil")
	}

	o.mu.Lock()
	now := time.Now()
	ok := o.last.Add(o.Interval).Before(now)
	if ok {
		o.last = now
	}
	o.mu.Unlock()

	if ok {
		f()
	}
}