#!/usr/bin/env bash
# 作业 8 · 在 207 上启动 SLA Prometheus Exporter
set -euo pipefail

DIR="/opt/workbuddy/scripts_cursor/作业8_SLA监控大盘"
PORT="${SLA_EXPORTER_PORT:-8781}"
PIDFILE="/tmp/hw8_sla_exporter.pid"
LOG="/tmp/hw8_sla_exporter.log"

if [[ -f "$PIDFILE" ]] && kill -0 "$(cat "$PIDFILE")" 2>/dev/null; then
  if [[ "${FORCE_RESTART:-0}" == "1" ]]; then
    echo "restarting sla_exporter pid=$(cat "$PIDFILE")"
    kill "$(cat "$PIDFILE")" 2>/dev/null || true
    sleep 1
    rm -f "$PIDFILE"
  else
    echo "sla_exporter already running pid=$(cat "$PIDFILE")"
    curl -sf "http://127.0.0.1:${PORT}/health" && echo
    exit 0
  fi
fi

mkdir -p /opt/workbuddy/data/homework8
cd "$DIR"
nohup python3 作业8_sla_exporter.py --port "$PORT" --interval 60 >>"$LOG" 2>&1 &
echo $! >"$PIDFILE"
sleep 2
curl -sf "http://127.0.0.1:${PORT}/health" && echo
curl -sf "http://127.0.0.1:${PORT}/metrics" | head -n 8
echo "started on :${PORT}, log=$LOG"