feat: make webhook address configurable (#450)

* feat: make webhook address configurable

* do not hard exit when failed to create a webhook handler

main.go

@@ -72,6 +72,7 @@ func init() {
 func main() {
  var metricsAddr string
  var probeBindAddr string
+ var webhookAddr string
  var enableLeaderElection bool
  var namespace string
  var argocdRepoServer string
@@ -83,6 +84,7 @@ func main() {
 
  flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
  flag.StringVar(&probeBindAddr, "probe-addr", ":8081", "The address the probe endpoint binds to.")
+ flag.StringVar(&webhookAddr, "webhook-addr", ":7000", "The address the webhook endpoint binds to.")
  flag.BoolVar(&enableLeaderElection, "enable-leader-election", false,
  "Enable leader election for controller manager. "+
  "Enabling this will ensure there is only one active controller manager.")
@@ -156,9 +158,11 @@ func main() {
  webhookHandler, err := utils.NewWebhookHandler(namespace, argoSettingsMgr, mgr.GetClient())
  if err != nil {
  setupLog.Error(err, "failed to create webhook handler")
- os.Exit(1)
  }
- startWebhookServer(webhookHandler)
+
+ if webhookHandler != nil {
+ startWebhookServer(webhookHandler, webhookAddr)
+ }
 
  terminalGenerators := map[string]generators.Generator{
  "List": generators.NewListGenerator(),
@@ -232,12 +236,12 @@ func setLoggingLevel(debug bool, logLevel string) {
  }
 }
 
-func startWebhookServer(webhookHandler *utils.WebhookHandler) {
+func startWebhookServer(webhookHandler *utils.WebhookHandler, webhookAddr string) {
  mux := http.NewServeMux()
  mux.HandleFunc("/api/webhook", webhookHandler.Handler)
  go func() {
  setupLog.Info("Starting webhook server")
- err := http.ListenAndServe(":7000", mux)
+ err := http.ListenAndServe(webhookAddr, mux)
  if err != nil {
  setupLog.Error(err, "failed to start webhook server")
  os.Exit(1)