Connect to vCluster Platform earlier

vCluster is now able to request a data source from vCluster Platform.
vCluster is only able to use the data source if it attempts to connect
to the vCluster Platform prior to deploying its own control plane.
vCluster Platform is now connected before control plane is deployed
but the platform controllers and tailscale server are started after
because they require the control plane to be running.

cmd/vcluster/cmd/start.go

@@ -89,7 +89,12 @@ func ExecuteStart(ctx context.Context, options *StartOptions) error {
 	// set features for plugins to recognize
 	plugin.DefaultManager.SetProFeatures(pro.LicenseFeatures())
 
-	// check if we should create certs
+	// connect to vCluster platform if configured
+	startPlatformServersAndControllers, err := pro.ConnectToPlatform(ctx, vConfig)
+	if err != nil {
+		return fmt.Errorf("connect to platform: %w", err)
+	}
+
 	err = setup.Initialize(ctx, vConfig)
 	if err != nil {
 		return fmt.Errorf("initialize: %w", err)
@@ -101,6 +106,11 @@ func ExecuteStart(ctx context.Context, options *StartOptions) error {
 		return fmt.Errorf("create controller context: %w", err)
 	}
 
+	err = startPlatformServersAndControllers(controllerCtx.VirtualManager)
+	if err != nil {
+		return fmt.Errorf("start platform controllers: %w", err)
+	}
+
 	// start integrations
 	err = integrations.StartIntegrations(controllerCtx)
 	if err != nil {
@@ -134,11 +144,6 @@ func ExecuteStart(ctx context.Context, options *StartOptions) error {
 		}
 	}
 
-	// connect to vCluster platform if configured
-	if err := pro.ConnectToPlatform(ctx, vConfig, controllerCtx.VirtualManager); err != nil {
-		return fmt.Errorf("connect to platform: %w", err)
-	}
-
 	// start leader election + controllers
 	err = StartLeaderElection(controllerCtx, func() error {
 		return setup.StartControllers(controllerCtx, syncers)

pkg/pro/platform.go

@@ -7,6 +7,6 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/manager"
 )
 
-var ConnectToPlatform = func(context.Context, *config.VirtualClusterConfig, manager.Manager) error {
-	return nil
+var ConnectToPlatform = func(context.Context, *config.VirtualClusterConfig) (func(mgr manager.Manager) error, error) {
+	return func(_ manager.Manager) error { return nil }, nil
 }