refactor: inline ready handler

main.go

@@ -101,15 +101,11 @@ func main() {
 		os.Exit(1)
 	}
 
-	readyHandler, err := handler.NewReadyHandler()
-	if err != nil {
-		klog.ErrorS(err, "unable to create ready handler")
-		os.Exit(1)
-	}
-
 	mux.Handle("POST /validate", http.TimeoutHandler(validateHandler, handlerTimeout, timeoutError))
 	mux.Handle("POST /mutate", http.TimeoutHandler(mutateHandler, handlerTimeout, timeoutError))
-	mux.Handle("GET /ready", readyHandler)
+	mux.Handle("GET /ready", http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		w.WriteHeader(http.StatusOK)
+	}))
 
 	server := &http.Server{
 		Addr:              fmt.Sprintf(":%d", port),

pkg/handler/ready.go

@@ -1,16 +0,0 @@
-package handler
-
-import (
-	"net/http"
-)
-
-type readyHandler struct{}
-
-// NewReadyHandler returns a readiness probe handler.
-func NewReadyHandler() (http.Handler, error) {
-	return &readyHandler{}, nil
-}
-
-func (h *readyHandler) ServeHTTP(w http.ResponseWriter, _ *http.Request) {
-	w.WriteHeader(http.StatusOK)
-}