248 lines
7.2 KiB
Plaintext
248 lines
7.2 KiB
Plaintext
const express = require('express');
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const os = require('os');
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const app = express();
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const PORT = 3000;
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// 记录服务器启动时间
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const SERVER_START_TIME = new Date();
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// 解析JSON请求体
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app.use(express.json());
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// GET /api/health - 快速健康检查
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app.get('/api/health', (req, res) => {
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res.json({
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status: 'healthy',
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timestamp: new Date().toISOString()
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});
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});
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// GET /api/status - 详细系统状态
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app.get('/api/status', (req, res) => {
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const totalMem = os.totalmem();
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const freeMem = os.freemem();
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const usedMem = totalMem - freeMem;
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res.json({
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service: 'HoloLake Health Monitor',
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version: '1.0.0',
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status: 'running',
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timestamp: new Date().toISOString(),
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uptime: {
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seconds: Math.floor((Date.now() - SERVER_START_TIME.getTime()) / 1000),
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startedAt: SERVER_START_TIME.toISOString()
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},
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system: {
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platform: os.platform(),
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arch: os.arch(),
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hostname: os.hostname(),
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nodeVersion: process.version
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},
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memory: {
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totalMB: Math.round(totalMem / 1024 / 1024),
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usedMB: Math.round(usedMem / 1024 / 1024),
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freeMB: Math.round(freeMem / 1024 / 1024),
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usagePercent: Math.round((usedMem / totalMem) * 100) + '%'
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}
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});
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});
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// POST /api/heartbeat - 心跳上报
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let heartbeats = [];
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app.post('/api/heartbeat', (req, res) => {
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const heartbeat = {
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timestamp: new Date().toISOString(),
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service: req.body.service || 'unknown',
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status: req.body.status || 'ok'
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};
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heartbeats.push(heartbeat);
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res.json({
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received: true,
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heartbeat: heartbeat
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});
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});
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// GET /api/heartbeat/history - 查看心跳历史
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app.get('/api/heartbeat/history', (req, res) => {
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res.json({
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total: heartbeats.length,
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heartbeats: heartbeats.slice(-20)
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});
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});
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// GET / - 根路径欢迎页
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app.get('/', (req, res) => {
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res.json({
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service: 'HoloLake Health Check & Status Report',
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version: '1.0.0',
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endpoints: [
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'GET /api/health - 快速健康检查',
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'GET /api/status - 详细系统状态',
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'POST /api/heartbeat - 心跳上报',
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'GET /api/heartbeat/history - 心跳历史'
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]
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});
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});
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// 启动服务器
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app.listen(PORT, () => {
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console.log('='.repeat(50));
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console.log('🌊 HoloLake Health Check & Status Report');
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console.log('📡 服务运行在: http://localhost:' + PORT);
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console.log('💚 GET /api/health - 健康检查');
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console.log('📊 GET /api/status - 系统状态');
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console.log('💓 POST /api/heartbeat - 心跳上报');
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console.log('='.repeat(50));
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});
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// ========== 定时自动巡检系统 ==========
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const patrolHistory = [];
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// 每60秒执行一次巡检
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setInterval(() => {
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console.log('[PATROL] 开始定时巡检...');
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const totalMem = os.totalmem();
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const freeMem = os.freemem();
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const usedMem = totalMem - freeMem;
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const memPercent = Math.round((usedMem / totalMem) * 100);
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const patrolRecord = {
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timestamp: new Date().toISOString(),
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memory: {
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totalMB: Math.round(totalMem / 1024 / 1024),
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usedMB: Math.round(usedMem / 1024 / 1024),
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usagePercent: memPercent
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},
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uptime: Math.floor((Date.now() - SERVER_START_TIME.getTime()) / 1000),
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heartbeatCount: heartbeats.length
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};
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patrolHistory.push(patrolRecord);
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// 只保留最近50条记录
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if (patrolHistory.length > 50) {
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patrolHistory.shift();
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}
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console.log(`[PATROL] 巡检完成 - 内存使用: ${memPercent}%`);
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}, 60000); // 60000毫秒 = 60秒
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// GET /api/patrol/history - 查看巡检历史
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app.get('/api/patrol/history', (req, res) => {
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res.json({
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total: patrolHistory.length,
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patrols: patrolHistory
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});
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});
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console.log('🔄 定时巡检系统已启动（每60秒）');
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// ========== 异常状态告警系统 ==========
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const alerts = [];
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// 告警检查函数
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function checkAlerts(memPercent) {
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let level = null;
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let message = '';
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if (memPercent > 90) {
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level = 'critical';
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message = `内存使用率过高: ${memPercent}%`;
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} else if (memPercent > 80) {
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level = 'warning';
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message = `内存使用率警告: ${memPercent}%`;
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}
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if (level) {
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const alert = {
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timestamp: new Date().toISOString(),
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level: level,
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message: message,
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memoryPercent: memPercent
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};
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alerts.push(alert);
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// 只保留最近20条告警
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if (alerts.length > 20) {
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alerts.shift();
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}
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console.log(`[ALERT] ${level.toUpperCase()}: ${message}`);
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}
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}
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// 修改巡检代码，加入告警检查（找到之前的setInterval，在console.log后面添加）
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// 在 patrolHistory.push(patrolRecord); 之后添加：
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// checkAlerts(memPercent);
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// GET /api/alerts - 查看告警历史
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app.get('/api/alerts', (req, res) => {
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res.json({
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total: alerts.length,
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critical: alerts.filter(a => a.level === 'critical').length,
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warning: alerts.filter(a => a.level === 'warning').length,
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alerts: alerts
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});
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});
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console.log('🚨 异常告警系统已启动（阈值: 80%警告, 90%严重）');
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// ========== 心跳超时检测系统 ==========
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const HEARTBEAT_TIMEOUT = 5 * 60 * 1000; // 5分钟 = 300000毫秒
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// 检查服务在线状态
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function checkOnlineStatus() {
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const now = Date.now();
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const onlineServices = [];
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const offlineServices = [];
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// 按source分组，找出每个source的最新心跳
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const latestHeartbeats = {};
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heartbeats.forEach(hb => {
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const source = hb.service || 'unknown';
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if (!latestHeartbeats[source] || new Date(hb.timestamp) > new Date(latestHeartbeats[source].timestamp)) {
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latestHeartbeats[source] = hb;
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}
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});
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// 检查每个source是否超时
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for (const [source, hb] of Object.entries(latestHeartbeats)) {
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const hbTime = new Date(hb.timestamp).getTime();
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const isOnline = (now - hbTime) < HEARTBEAT_TIMEOUT;
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const serviceInfo = {
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source: source,
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lastHeartbeat: hb.timestamp,
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secondsAgo: Math.floor((now - hbTime) / 1000),
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status: isOnline ? 'online' : 'offline'
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};
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if (isOnline) {
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onlineServices.push(serviceInfo);
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} else {
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offlineServices.push(serviceInfo);
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}
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}
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return { online: onlineServices, offline: offlineServices };
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}
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// 修改GET /api/status，添加在线服务列表
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// 找到原来的 app.get('/api/status', ...)，在res.json里添加：
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// services: checkOnlineStatus()
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// GET /api/heartbeat/online - 查看在线服务
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app.get('/api/heartbeat/online', (req, res) => {
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const status = checkOnlineStatus();
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res.json({
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timestamp: new Date().toISOString(),
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onlineCount: status.online.length,
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offlineCount: status.offline.length,
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online: status.online,
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offline: status.offline
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});
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});
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console.log('⏰ 心跳超时检测已启动（超时: 5分钟）');
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