From 0a68b48acc956ab7e9b9b6e869b14e6f5e7d78e9 Mon Sep 17 00:00:00 2001
From: Esther Lozano <esloho@gmail.com>
Date: Wed, 26 Feb 2020 17:58:32 +0100
Subject: [PATCH] Avoid normalizing empty fields (#645)

---
 lib/api/middlewares/pubsub-metrics.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/api/middlewares/pubsub-metrics.js b/lib/api/middlewares/pubsub-metrics.js
index 1f459a1c..f5410a03 100644
--- a/lib/api/middlewares/pubsub-metrics.js
+++ b/lib/api/middlewares/pubsub-metrics.js
@@ -45,6 +45,10 @@ function getEventData (req, res) {
 }
 
 function normalizedField (field) {
+    if (!field) {
+        return undefined;
+    }
+
     return field.toString().trim().substr(0, MAX_LENGTH);
 }