54 lines
1.7 KiB
JavaScript
54 lines
1.7 KiB
JavaScript
const http = require('http');
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const port = 3000;
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const pClient = require('prom-client');
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const metrics = require('./index');
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pClient.collectDefaultMetrics({ timeout: 60000 });
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const requestHandler = async (req, res) => {
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let date = new Date(Date.now()).toLocaleString();
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console.log(`${date}: ${req.url}`);
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switch (req.url) {
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case '/metrics':
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let m = await metrics.getUsage();
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// TODO: Switch to the correct err, res pattern with promise
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if (m !== null) {
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let usedGauge = new pClient.Gauge({
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name: 'act_fup_usage_gigabytes_total',
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help: 'ACT current usage in GB',
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});
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usedGauge.set(m.used);
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let totalGauge = new pClient.Gauge({
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name: 'act_fup_max_gigabytes_total',
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help: 'ACT FUP limit in GB',
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});
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totalGauge.set(m.total);
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let register = pClient.register;
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res.setHeader('Content-Type', register.contentType);
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res.end(register.metrics());
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} else {
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res.sendStatus(500);
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res.end('Scrape failed');
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}
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break;
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default:
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res.writeHead(302, {
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Location:
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'https://git.captnemo.in/nemo/prometheus-node-exporter',
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});
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res.end();
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break;
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}
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};
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const server = http.createServer(requestHandler);
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server.listen(port, err => {
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if (err) {
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return console.log('something bad happened', err);
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}
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console.log(`server is listening on ${port}`);
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});
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