mirror of
https://github.com/BreizhHardware/express-prom-bundle.git
synced 2026-01-18 16:27:28 +01:00
20c6a7de24
v12 drops support for versions of Node.js that are no longer supported (as-of January, 2020), and also removes the timeout option from collectDefaultMetrics(). Remove 6 and 8 from Travis, and add 12 and 13 (so all the non-EOL versions of Node.js are tested).
59 lines
1.3 KiB
JavaScript
59 lines
1.3 KiB
JavaScript
'use strict';
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const express = require('express');
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const app = express();
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const promClient = require('prom-client');
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const promBundle = require('express-prom-bundle');
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const bundle = promBundle({
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buckets: [0.1, 0.4, 0.7],
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includeMethod: true,
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includePath: true,
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customLabels: {year: null},
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transformLabels: labels => Object.assign(labels, {year: new Date().getFullYear()}),
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metricsPath: '/prometheus',
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promClient: {
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collectDefaultMetrics: {
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}
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},
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urlValueParser: {
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minHexLength: 5,
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extraMasks: [
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"^[0-9]+\\.[0-9]+\\.[0-9]+$" // replace dot-separated dates with #val
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]
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},
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normalizePath: [
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['^/foo', '/example'] // replace /foo with /example
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]
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});
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app.use(bundle);
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// native prom-client metric (no prefix)
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const c1 = new promClient.Counter({name: 'c1', help: 'c1 help'});
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c1.inc(10);
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app.get('/foo/:id', (req, res) => {
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setTimeout(() => {
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res.send('foo response\n');
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}, 500);
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});
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app.delete('/foo/:id', (req, res) => {
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setTimeout(() => {
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res.send('foo deleted\n');
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}, 300);
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});
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app.get('/bar', (req, res) => res.send('bar response\n'));
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app.listen(3000, () => console.info( // eslint-disable-line
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`listening on 3000
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test in shell console:
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curl localhost:3000/foo/1234
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curl localhost:3000/foo/09.08.2018
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curl -X DELETE localhost:3000/foo/5432
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curl localhost:3000/bar
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curl localhost:3000/prometheus
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`
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));
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