From ec425f61da309a084fff446fab30637b637f9315 Mon Sep 17 00:00:00 2001
From: DarcyRaynerDD <darcy.rayner@datadoghq.com>
Date: Thu, 9 Apr 2020 13:25:29 -0400
Subject: [PATCH] Downcase function arn in trace metadata

---
 datadog_lambda/tracing.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/datadog_lambda/tracing.py b/datadog_lambda/tracing.py
index 132b3884..d62cad37 100644
--- a/datadog_lambda/tracing.py
+++ b/datadog_lambda/tracing.py
@@ -238,9 +238,10 @@ def create_function_execution_span(
 ):
     tags = {}
     if context:
+        function_arn = (context.invoked_function_arn or "").lower()
         tags = {
             "cold_start": str(is_cold_start).lower(),
-            "function_arn": context.invoked_function_arn,
+            "function_arn": function_arn,
             "request_id": context.aws_request_id,
             "resource_names": context.function_name,
         }