Setup of an opentelemetry prometheus exporter

opentelemetry-exporter-setup.js

'use strict'

const { PrometheusExporter } = require('@opentelemetry/exporter-prometheus')
const { MeterProvider } = require('@opentelemetry/metrics')

// configuration options omitted for brevity
const exporter = new PrometheusExporter({ host, port, endpoint, appendTimestamp, prefix }, () => {
    console.log('Exporter now running on port', port)
})

const meter = new MeterProvider({
    exporter,
    interval
}).getMeter('logged-in-users', 1)