feat: Log setup error in case of failed curl command

setup/entrypoint.sh

@@ -33,14 +33,36 @@ roles_files=(
 
 echo "-------- $(date) --------"
 
-state_file="$(dirname ${BASH_SOURCE[0]})/state/.done"
+state_file="$(dirname "${BASH_SOURCE[0]}")/state/.done"
 if [[ -e "$state_file" ]]; then
 	log "State file exists at '${state_file}', skipping setup"
 	exit 0
 fi
 
-log 'Waiting for availability of Elasticsearch'
+log 'Waiting for availability of Elasticsearch. This can take several minutes.'
-wait_for_elasticsearch
+
+declare -i exit_code=0
+wait_for_elasticsearch || exit_code=$?
+
+if ((exit_code)); then
+	case $exit_code in
+		6)
+			suberr 'Could not resolve host. Is Elasticsearch running?'
+			;;
+		7)
+			suberr 'Failed to connect to host. Is Elasticsearch healthy?'
+			;;
+		28)
+			suberr 'Timeout connecting to host. Is Elasticsearch healthy?'
+			;;
+		*)
+			suberr "Connection to Elasticsearch failed. Exit code: ${exit_code}"
+			;;
+	esac
+
+	exit $exit_code
+fi
+
 sublog 'Elasticsearch is running'
 
 for role in "${!roles_files[@]}"; do

setup/helpers.sh

@@ -15,6 +15,11 @@ function err {
 	echo "[x] $1" >&2
 }
 
+# Log an error at a sub-level.
+function suberr {
+	echo "   ⠍ $1" >&2
+}
+
 # Poll the 'elasticsearch' service until it responds with HTTP code 200.
 function wait_for_elasticsearch {
 	local elasticsearch_host="${ELASTICSEARCH_HOST:-elasticsearch}"
@@ -30,7 +35,13 @@ function wait_for_elasticsearch {
 
 	# retry for max 300s (60*5s)
 	for _ in $(seq 1 60); do
-		output="$(curl "${args[@]}" || true)"
+		local -i exit_code=0
+		output="$(curl "${args[@]}")" || exit_code=$?
+
+		if ((exit_code)); then
+			result=$exit_code
+		fi
+
 		if [[ "${output: -3}" -eq 200 ]]; then
 			result=0
 			break
@@ -39,7 +50,7 @@ function wait_for_elasticsearch {
 		sleep 5
 	done
 
-	if ((result)); then
+	if ((result)) && [[ "${output: -3}" -ne 000 ]]; then
 		echo -e "\n${output::-3}"
 	fi