// hasUpdates checks an alert against the last notification that was made
// about it.
func (n *DedupingNotifier) hasUpdate(alert *types.Alert, last *types.NotifyInfo, now time.Time, interval time.Duration) bool {
if last != nil {
if alert.Resolved() {
if last.Resolved {
return false
}
} else if !last.Resolved {
// Do not send again if last was delivered unless
// the repeat interval has already passed.
if !now.After(last.Timestamp.Add(interval)) {
return false
}
}
} else if alert.Resolved() {
// If the alert is resolved but we never notified about it firing,
// there is nothing to do.
return false
}
return true
}
