notify

type Condition ¶

type Condition func(now time.Time) (deadline time.Time, callback func())

Condition is a function that gets executed with a certain time.

• It should return the deadline for the notification, as well as a callback function to execute once the time to the deadline is less than one of the notify attempts. If deadline is the zero time, callback will not be executed.
• Callback is executed once for every time the difference between deadline and the current time is less than an element of countdown.
• To enforce a minimum interval between consecutive callbacks, truncate the returned deadline to the minimum interval.

type Notifier ¶

type Notifier struct {
	// contains filtered or unexported fields
}

Notifier calls a Condition at most once for each count in countdown.

func New(cond Condition, countdown ...time.Duration) *Notifier

func (n *Notifier) Poll(ticker <-chan time.Time)