check a second time if there was a change

cmd/domaincheckbot/main.go

@@ -48,15 +48,7 @@ func main() {
 			select {
 			case <-ticker.C:
 				for _, d := range config.Domains {
-					domain := dns.CheckDomain(d)
+					go checkDomain(0, d, repo, client)
-					retrievedDomain, _ := repo.GetValue(d)
-					if reflect.DeepEqual(domain, retrievedDomain) {
-						log.Debugf(" %v: did not change", d)
-					} else {
-						log.Infof("!%v: changed", d)
-						go sendWebhook(client, domain, retrievedDomain)
-						repo.SetValue(domain)
-					}
 				}
 
 			case <-tickerGC.C:
@@ -81,6 +73,24 @@ func main() {
 	<-s
 }
 
+func checkDomain(counter int, d string, repo *repository.DomainRepository, client webhook.Client) {
+	domain := dns.CheckDomain(d)
+	retrievedDomain, _ := repo.GetValue(d)
+	if reflect.DeepEqual(domain, retrievedDomain) {
+		log.Debugf(" %v: did not change", d)
+		return
+	}
+	log.Infof("!%v: changed", d)
+	counter += 1
+	if counter >= 2 {
+		go sendWebhook(client, domain, retrievedDomain)
+		repo.SetValue(domain)
+		return
+	}
+	time.Sleep(1 * time.Minute)
+	checkDomain(counter, d, repo, client)
+}
+
 func sendWebhook(client webhook.Client, domain repository.Domain, oldDomain repository.Domain) {
 	var status string