From 09134c8c79b177dcbdcef16c30f72a7407b0c75b Mon Sep 17 00:00:00 2001
From: Sergey Yedrikov <syedriko@redhat.com>
Date: Sat, 27 Apr 2019 12:56:54 -0400
Subject: [PATCH] compile-time assert numControllers == len(controllersArray)

---
 cmd/controller/main.go | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/cmd/controller/main.go b/cmd/controller/main.go
index 348c4e6ecf2f..90759c011034 100644
--- a/cmd/controller/main.go
+++ b/cmd/controller/main.go
@@ -102,7 +102,7 @@ func main() {
 
 	// Build all of our controllers, with the clients constructed above.
 	// Add new controllers to this array.
-	controllers := []*controller.Impl{
+	controllersArray := [...]*controller.Impl{
 		configuration.NewController(
 			opt,
 			configurationInformer,
@@ -147,9 +147,9 @@ func main() {
 			endpointsInformer,
 		),
 	}
-	if len(controllers) != numControllers {
-		logger.Fatalf("Number of controllers and QPS settings mismatch: %d != %d", len(controllers), numControllers)
-	}
+	controllers := controllersArray[:]
+	// compile-time assert numControllers == len(controllersArray)
+	var _ [numControllers - len(controllersArray)][len(controllersArray) - numControllers]int
 
 	// Watch the logging config map and dynamically update logging levels.
 	opt.ConfigMapWatcher.Watch(logging.ConfigMapName(), logging.UpdateLevelFromConfigMap(logger, atomicLevel, component))