Snippet: Simple Website Uptime Monitor | Discord Alerts

Simple Website Uptime Monitor | Discord Alerts

kangabru — kangabru

A simple uptime monitor script that pings your website periodically to see if it's up and running. If the site breaks then it sends an alert to Discord.

const lib = require('lib')({token: process.env.STDLIB_SECRET_TOKEN});
const axios = require('axios');

const sites = [
  'https://google.com',
  'https://this-site-doesnt-exist.zyx',
];

const sendWarning = async (siteUrl) => {
  const content = `⚠ '${siteUrl}' is not responding ⚠`
  console.warn(content);
  return lib.discord.channels['@0.2.0'].messages.create({
    channel_id: `${process.env.CHANNEL}`, content,
  });
}

// Send a GET request up to 3 times for a specific site
const checkSite = async (site) => {
  for (let checks = 0; checks < 3; checks++) {
    const passed = await axios
      .get(site, {timeout: 8e3}) // 8 secs
      .then(() => true)
      .catch(() => false);
    if (passed) return true;
  }
  return false;
};

// Test all sites and post warnings
await Promise.all(
  (await Promise.all(sites.map(checkSite)))
    .map((passed, i) => [passed, sites[i]])
    .filter(([passed, _]) => !passed)
    .map(([_, site]) => sendWarning(site))
);