Check if datadog agent is running

getDataDogAgentStatus.js

const fetch = require('node-fetch');
const hotShots = require('hot-shots');

const ddAgentHost = process.env.DD_AGENT_HOST || 'localhost';

async function checkAgentStatus() {
  let metricsUp = 'OK (no error returned)';
  let apmUp = '';

  const datadog = new hotShots.StatsD({
    protocol: undefined,
    host: ddAgentHost,
    port: 8125,
    errorHandler(error) {
      metricsUp += `errorHandler: ${error}`;
    },
  });
  await datadog.close(async (error) => {
    metricsUp = await `Close error: ${error}`;
    console.log(metricsUp);
  });

  await fetch(`http://${ddAgentHost}:8126/services`)
    .then(async (response) => {
      console.log(await response.text());
      apmUp = response.statusText;
    })
    .catch((error) => {
      apmUp = error;
    });

  return {
    metricsUp,
    apmUp,
  };
}

module.exports = {
  checkAgentStatus,
};