From 6089780b73014fa85e2faaa7321c9ede054bc2eb Mon Sep 17 00:00:00 2001
From: Josh Hunt <joshhunt@users.noreply.github.com>
Date: Thu, 17 Jul 2025 18:18:29 +0100
Subject: [PATCH] E2E: Use while/curl loop for waiting for the server to come
 up (#108259)

* E2E: Use while/curl loop for waiting for the server to come up

* add 60s timeout
---
 scripts/grafana-server/wait-for-grafana | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/scripts/grafana-server/wait-for-grafana b/scripts/grafana-server/wait-for-grafana
index 54ff393b7a8..7ed31822f38 100755
--- a/scripts/grafana-server/wait-for-grafana
+++ b/scripts/grafana-server/wait-for-grafana
@@ -6,6 +6,20 @@ set -eo pipefail
 HOST=${HOST:-$DEFAULT_HOST}
 PORT=${PORT:-$DEFAULT_PORT}
 
-echo -e "Waiting for grafana-server to finish starting, host=$HOST, port=$PORT"
+printf "Waiting for grafana-server to finish starting, host=%s, port=%s" "$HOST" "$PORT"
 
-timeout 60 bash -c 'until nc -z $0 $1; do sleep 1; done' $HOST $PORT
+timeout=60
+elapsed=0
+
+while ! curl -s -f http://$HOST:$PORT/health > /dev/null 2>&1; do
+  if [ $elapsed -ge $timeout ]; then
+    printf "\nTimeout after %d seconds waiting for grafana-server to start\n" "$timeout"
+    exit 1
+  fi
+
+  printf "."
+  sleep 1
+  elapsed=$((elapsed + 1))
+done
+
+printf "\n"