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app.js
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const fs = require('fs');
const os = require('os');
const proc = require('child_process');
const fastify = require('fastify')({ logger:{level:'trace'}, trustProxy:true });
const App = {
Port:(process.env.PORT || '_'), //Port:(process.env.APP_PORT || process.argv[2] || '_'),
IP: (process.env.HOST || '0.0.0.0'), //IP: (process.env.APP_IP || process.argv[3] || '0.0.0.0'),
IP1:'127.0.0.1', IP4:'0.0.0.0', IP6:'::',
Requests:0,
Clients:{},
Host: { IP:false }
}
App.DoInfoPage = function (req,rep) {
let msg = App.GetMsg(req);
let info = App.GetInfo(req,rep);
let head = "<title>"+msg+"</title><style>body { font-size:15px;font-family:monospace; }</style>";
let body = "<center>"+msg+"<hr>"+"</center><pre>\n"+JSON.stringify(info,null,2)+"</pre>"+"<center><hr>"+"<a href='/'>/</a><br><a href='/info'>INFO</a><br><a href='/infoline'>INFOLINE</a><br><a href='/infopage'>INFOPAGE</a></center>";
let html = "<html><head>"+head+"</head><body>"+body+"</html>";
rep.type('text/html').send(html);
}
App.Init = function () {
// if (!App.IP) { App.IP = App.IP4; };
App.NICS=[]; App.NICDB = {}; var nics = os.networkInterfaces();
Object.keys(nics).forEach(function (x,n) {
for (var i=0;i<nics[x].length;i++) {
var z = nics[x][i]; if (z.family=='IPv4') {
if (!App.Host.IP && z.cidr!='127.0.0.1/8') { App.Host.IP=z.address; };
App.NICDB[x]={ID:n, MAC:z.mac.replace(/:/g,'').toUpperCase(), CIDR:z.cidr };
App.NICS.push(z.mac.replace(/:/g,'').toUpperCase()+'/'+z.cidr);
}
}
});
console.log(App.GetMsg());
if (App.Port=='_') { return; }
fastify.log.info('App.Init:Init');
fastify.addHook('onRequest', (req,rep,nxt) => {
let reqip = req.ip; // req.socket.remoteAddress;
App.Requests++;
if (!App.Clients[reqip]) { App.Clients[reqip]=1; } else { App.Clients[reqip]++; }
nxt();
});
// fastify.setNotFoundHandler((req,rep) => { App.DoInfoPage(req,rep); });
// fastify.get('/infopage', (req,rep) => { App.DoInfoPage(req,rep); });
fastify.setNotFoundHandler(App.DoInfoPage);
fastify.get('/infopage', App.DoInfoPage);
fastify.get('/', (req,rep) => { var url = '/infoline'; if (req.headers['user-agent'].startsWith('Mozilla')) { url='/infopage'; }; rep.redirect(url); });
fastify.get('/infoline', (req,rep) => { rep.send(App.GetMsg(req)+"\n"); });
//fastify.get('/info', (req,rep) => { let info = App.GetInfo(req,rep); rep.send(info); });
fastify.get('/info', (req,rep) => { let info = App.GetInfo(req,rep); rep.send( JSON.stringify(info,null,2)+"\n" ); });
fastify.listen(App.Port, App.IP, (err,address) => { if (err) { console.error(err); throw err; } else { fastify.log.info('App.Init:Done'); App.Main(); } } );
};
App.Main = function () { fastify.log.info('App.Main'); };
App.GetMsg = function (req) { let msg = 'NODEINFO'; msg += ': '+require('os').hostname().toUpperCase()+' @ '+App.IP+':'+App.Port+' @ '; if (req) { msg += req.headers.host.toUpperCase()+' @ '; }; msg += new Date().toISOString(); return msg; };
App.GetInfoReq = function (req) {
let info = {};
if (req) {
let reqip = req.ip; // let reqip = req.socket.remoteAddress;
info = {
ID:req.id,
IP:reqip,
IPs:req.ips,
Host:req.hostname,
Proto:req.protocol,
Method:req.method,
URL:req.url,
// Router:{ Method:req.routerMethod, Path:req.routerPath },
Query:req.query,
Params:req.params,
Body:req.body,
Headers:req.headers,
};
}
return info;
};
App.GetInfo = function (req,rep) {
let info = {
DT: new Date().toISOString(),
Request: App.GetInfoReq(req),
Reply: { Status:rep.statusCode, Headers:rep.getHeaders() },
Requests: { Total:App.Requests, IP:App.Clients },
Listen: { IP:App.IP, Port:App.Port },
Docker: { Env:fs.existsSync('/.dockerenv') },
Host: { Name:os.hostname().toUpperCase(), IP:App.Host.IP, Uptime:os.uptime(), Load:os.loadavg(), OS:{ Info:(os.arch()+','+os.platform()+','+os.type()).replace(/ /g,'_'), Arch:os.arch(), Platform:os.platform(), Type:os.type(), Version:os.version() } },
Process: { Uptime:process.uptime(), Title:process.title, CWD:process.cwd(), Argv:process.argv, ExecPath:process.execPath, ExecArgv:process.execArgv, PID:process.pid, PPID:process.ppid, },
Node: { Version:process.version, DebugPort:process.debugPort, Deps:process.versions },
Env: process.env,
Metrics: { CPU: process.cpuUsage(), Memory: process.memoryUsage(), Usage:process.resourceUsage(), },
NIC:App.NICDB,
//App:App,
};
if (os.platform()=='linux') {
info.Host.ProcSched = proc.execSync('head -1 /proc/1/sched').toString().split(" (")[0];
// info.Docker.ProcGroups = proc.execSync('grep docker /proc/1/cgroup').toString().split("\n");
}
return info;
};
App.Init();