From 68361c37931a48c53a125fb8046daeed0b288847 Mon Sep 17 00:00:00 2001
From: Chris Gianelloni <wolf31o2@blinklabs.io>
Date: Sun, 10 Nov 2024 22:05:27 -0500
Subject: [PATCH] fix: guard resp against nil from http do (#237)

Signed-off-by: Chris Gianelloni <wolf31o2@blinklabs.io>
---
 env.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/env.go b/env.go
index 381b773..79369b0 100644
--- a/env.go
+++ b/env.go
@@ -34,7 +34,7 @@ func getNodeMetrics(ctx context.Context) ([]byte, int, error) {
 		cfg.Prometheus.Host,
 		cfg.Prometheus.Port,
 	)
-	var respBodyBytes []byte
+	respBodyBytes := []byte{}
 	// Setup request
 	req, err := http.NewRequest(
 		http.MethodGet,
@@ -56,6 +56,11 @@ func getNodeMetrics(ctx context.Context) ([]byte, int, error) {
 	if err != nil {
 		return respBodyBytes, http.StatusInternalServerError, err
 	}
+	if resp == nil {
+		return respBodyBytes, http.StatusInternalServerError, fmt.Errorf(
+			"empty response",
+		)
+	}
 	// Read the entire response body and close it to prevent a memory leak
 	respBodyBytes, err = io.ReadAll(resp.Body)
 	if err != nil {