server.js

'use strict';

process.title = 'pending-dns';

// cache before wild-config
const argv = process.argv.slice(2);
const config = require('wild-config');
const logger = require('./lib/logger').child({ component: 'server' });
const pathlib = require('path');
const { Worker, SHARE_ENV } = require('worker_threads');
const { isemail } = require('./lib/tools');
const { installCrashHandlers } = require('./lib/close-process');

if (!config.acme || !isemail(config.acme.email)) {
    console.error('"acme.email" configuration value is not set or is not a valid email address');
    process.exit(51);
}

require('./lib/sentry').initSentry('main');

const { isClosing } = installCrashHandlers(logger);

let workers = new Map();

let spawnWorker = type => {
    if (isClosing()) {
        return;
    }

    if (!workers.has(type)) {
        workers.set(type, new Set());
    }

    let worker = new Worker(pathlib.join(__dirname, 'workers', `${type}.js`), {
        argv,
        env: SHARE_ENV
    });

    workers.get(type).add(worker);

    worker.on('exit', exitCode => {
        workers.get(type).delete(worker);

        if (isClosing()) {
            return;
        }

        // spawning a new worker trigger reassign
        logger.error({ msg: 'Worker exited', exitCode });
        setTimeout(() => spawnWorker(type), 1000);
    });
};

if (config.api.enabled) {
    spawnWorker('api');
}

// DNS server
if (config.dns.enabled) {
    spawnWorker('dns');
}

// Public HTTP/HTTPS server
if (config.public.enabled) {
    spawnWorker('public');
}

// Healthchecks
if (config.health.enabled) {
    spawnWorker('health');
}