elastic-apm-node/lib/metrics/platforms/linux/index.js

The official Elastic APM agent for Node.js

'use strict'

const Stats = require('./stats')

module.exports = function createSystemMetrics (registry) {
  const stats = new Stats()

  registry.registerCollector(stats)

  for (let metric of Object.keys(stats.toJSON())) {
    registry.getOrCreateGauge(metric, () => stats.toJSON()[metric])
  }
}