Fix: Welcome dashboard contains no metrics for 1m

Signed-off-by: Knut Ahlers <knut@ahlers.me>

welcome_runner.go

@@ -17,9 +17,15 @@ func runWelcomePage(cfg *config.Config) {
 	welcomeAPIToken := cfg.APIToken
 	generateTicker := time.NewTicker(time.Minute)
 
-	for {
-		select {
-		case <-generateTicker.C:
+	// Do one initial push on start
+	postWelcomeMetric(baseURL, welcomeAPIToken)
+
+	for range generateTicker.C {
+		postWelcomeMetric(baseURL, welcomeAPIToken)
+	}
+}
+
+func postWelcomeMetric(baseURL, welcomeAPIToken string) {
 	beers := rand.Intn(24)
 	status := "OK"
 	switch {
@@ -42,7 +48,7 @@ func runWelcomePage(cfg *config.Config) {
 	body, err := json.Marshal(beer)
 	if err != nil {
 		log.Println(err)
-				continue
+		return
 	}
 	url := fmt.Sprintf("%s/welcome/beer_available", baseURL)
 	req, _ := http.NewRequest("PUT", url, bytes.NewBuffer(body))
@@ -50,10 +56,7 @@ func runWelcomePage(cfg *config.Config) {
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		log.Printf("[WelcomeRunner] %s", err)
-				continue
+		return
 	}
 	resp.Body.Close()
 }
-	}
-
-}