From 0b62b1cdd829e74cc0a2b145e883611cb3356c22 Mon Sep 17 00:00:00 2001
From: Knut Ahlers <knut@ahlers.me>
Date: Mon, 1 Oct 2018 15:07:52 +0200
Subject: [PATCH] Add error logging for http rendering errors

Signed-off-by: Knut Ahlers <knut@ahlers.me>
---
 http.go | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/http.go b/http.go
index 2f70d34..6eef63a 100644
--- a/http.go
+++ b/http.go
@@ -18,12 +18,14 @@ func htmlHandler(res http.ResponseWriter, r *http.Request) {
 		log.Fatal(err)
 	}
 
-	template.ExecuteWriter(pongo2.Context{
+	if err := template.ExecuteWriter(pongo2.Context{
 		"results":                probeMonitors,
 		"certificateOK":          certificateOK,
 		"certificateExpiresSoon": certificateExpiresSoon,
 		"version":                version,
-	}, res)
+	}, res); err != nil {
+		log.WithError(err).Error("Unable to render display template")
+	}
 }
 
 func httpStatusHandler(res http.ResponseWriter, r *http.Request) {