github.com/sl1pm4t/consul@v1.4.5-0.20190325224627-74c31c540f9c/agent/ae/trigger.go (about)

     1  package ae
     2  
     3  // Trigger implements a non-blocking event notifier. Events can be
     4  // triggered without blocking and notifications happen only when the
     5  // previous event was consumed.
     6  type Trigger struct {
     7  	ch chan struct{}
     8  }
     9  
    10  func NewTrigger() *Trigger {
    11  	return &Trigger{make(chan struct{}, 1)}
    12  }
    13  
    14  func (t Trigger) Trigger() {
    15  	select {
    16  	case t.ch <- struct{}{}:
    17  	default:
    18  	}
    19  }
    20  
    21  func (t Trigger) Notif() <-chan struct{} {
    22  	return t.ch
    23  }