#!/usr/bin/env bash
# The single most useful number in this repository: how long a naive Kafka health check blocks.
set -uo pipefail
cd "$(dirname "$0")/.."
OUT=docs/output/09-kafka-timeout.txt
MODE="${1:-tuned}"
B=http://localhost:8080/actuator/health/kafka
{
  echo "### Kafka health check against an unreachable broker -- ${MODE}"
  echo
  echo "\$ time curl -s $B"
  s=$(date +%s.%N)
  body=$(curl -s -u ops:ops-password --max-time 180 "$B")
  e=$(date +%s.%N)
  echo "$body" | python3 -m json.tool 2>/dev/null || echo "$body"
  echo
  printf 'wall clock: %.1f s\n' "$(echo "$e - $s" | bc)"
} > "$OUT.$MODE" 2>&1
echo "wrote $OUT.$MODE"