| set -euo pipefail | |
| check_cmd() { | |
| local name="$1"; shift | |
| if command -v "$name" >/dev/null 2>&1; then | |
| printf "✅ %-14s %s\n" "$name" "$("$name" --version 2>/dev/null | head -n1 || echo present)" | |
| else | |
| printf "❌ %-14s %s\n" "$name" "not found" | |
| return 1 | |
| fi | |
| } | |
| echo "=== DTO Prerequisites Check ===" | |
| rc=0 | |
| check_cmd nats-server || rc=1 | |
| check_cmd dragonfly || rc=1 | |
| check_cmd java || rc=1 | |
| if [[ $rc -ne 0 ]]; then | |
| echo "\nSome prerequisites are missing. See scripts/install_prereqs.sh to install." | |
| exit $rc | |
| fi | |
| echo "All prerequisites detected." | |