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/* eslint-disable no-continue */
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/* eslint-disable import/no-dynamic-require */
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/* eslint-disable no-await-in-loop */
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/* eslint-disable no-eval */
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import './interface';
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import os from 'os';
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import path from 'path';
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import cluster from 'cluster';
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import wtfnode from 'wtfnode';
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import fs from 'fs-extra';
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import { argv } from 'yargs';
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import AdmZip from 'adm-zip';
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import { } from './utils';
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export * from './interface';
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if (!global.Hydro) {
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global.Hydro = {
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stat: { reqCount: 0 },
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handler: {},
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// @ts-ignore
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service: {},
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// @ts-ignore
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model: {},
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script: {},
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// @ts-ignore
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lib: {},
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// @ts-ignore
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ui: {
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manifest: {},
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nodes: {
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nav: [],
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problem_add: [],
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user_dropdown: [],
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},
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template: {},
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},
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// @ts-ignore
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error: {},
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locales: {},
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};
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global.addons = [];
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}
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// eslint-disable-next-line import/first
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import { Logger } from './logger';
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// eslint-disable-next-line import/first
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import * as bus from './service/bus';
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const logger = new Logger('loader');
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wtfnode.setLogger('error', logger.error.bind(logger));
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wtfnode.setLogger('warn', logger.warn.bind(logger));
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wtfnode.setLogger('info', logger.info.bind(logger));
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logger.debug('%o', argv);
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async function terminate() {
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wtfnode.dump();
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try {
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await bus.parallel('app/exit');
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} catch (e) {
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process.exit(1);
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}
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process.exit(0);
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}
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async function fork(args: string[] = []) {
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const _args = process.argv.slice(2);
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_args.push(...args, `--addons=${Buffer.from(JSON.stringify(global.addons)).toString('base64')}`);
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cluster.setupMaster({ args: _args });
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return cluster.fork();
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}
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interface EntryConfig {
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entry: string,
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newProcess?: boolean,
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}
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async function entry(config: EntryConfig) {
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if (config.entry) {
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if (config.newProcess) {
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const p = await fork([`--entry=${config.entry}`]);
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await new Promise((resolve, reject) => {
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p.on('exit', (code, signal) => {
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if (code === 0) resolve();
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else reject(signal);
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});
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p.on('error', (err: Error) => {
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p.kill();
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reject(err);
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});
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});
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} else {
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const loader = require(`./entry/${config.entry}`);
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return await loader.load(entry, global.addons);
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}
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}
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return null;
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}
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export type Entry = typeof entry;
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async function stopWorker() {
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cluster.disconnect();
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}
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async function startWorker(cnt: number) {
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await fork(['--firstWorker']);
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for (let i = 1; i < cnt; i++) await fork();
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}
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async function executeCommand(input: string) {
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try {
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const t = eval(input.toString().trim());
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if (t instanceof Promise) console.log(await t);
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else console.log(t);
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} catch (e) {
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console.warn(e);
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}
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}
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async function reload(count = 1) {
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logger.info('Reloading');
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await stopWorker();
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logger.info('Worker stopped');
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await startWorker(count);
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}
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async function messageHandler(worker: cluster.Worker, msg: any) {
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if (!msg) msg = worker;
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if (msg.event) {
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if (msg.event === 'bus') {
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if (cluster.isMaster) {
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for (const i in cluster.workers) {
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cluster.workers[i].send(msg);
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}
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} else {
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global.Hydro.service.bus.emit(msg.eventName, ...msg.payload);
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}
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} else if (msg.event === 'stat') {
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global.Hydro.stat.reqCount += msg.count;
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} else if (msg.event === 'restart') {
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await reload(msg.count);
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} else if (msg.event === 'run') {
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await executeCommand(msg.command);
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}
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}
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}
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const moduleTemp = path.resolve(os.tmpdir(), 'hydro', 'module');
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const publicTemp = path.resolve(os.tmpdir(), 'hydro', 'public');
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const tmp = path.resolve(os.tmpdir(), 'hydro', '__');
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export function addon(addonPath: string) {
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let modulePath = path.resolve(process.cwd(), addonPath);
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if (!(fs.existsSync(addonPath) && fs.statSync(addonPath).isFile())) {
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try {
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// Is a npm package
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const packagejson = require.resolve(`${addonPath}/package.json`);
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modulePath = path.dirname(packagejson);
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const publicPath = path.resolve(modulePath, 'public');
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if (fs.existsSync(publicPath)) fs.copySync(publicPath, publicTemp);
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global.addons.push(modulePath);
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} catch (e) {
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logger.error(`Addon not found: ${addonPath}`);
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}
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} else if (modulePath.endsWith('.hydro')) {
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try {
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// Is *.hydro module
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const t = modulePath.split(path.sep);
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const name = t[t.length - 1].split('.')[0];
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const zip = new AdmZip(modulePath);
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const targetPath = path.resolve(moduleTemp, name);
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zip.extractAllTo(targetPath, true);
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const content = fs.readdirSync(targetPath);
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const ipath = path.join(targetPath, content[0]);
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if (content.length === 1 && fs.statSync(ipath).isDirectory()) {
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fs.moveSync(ipath, tmp);
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fs.rmdirSync(targetPath);
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fs.moveSync(tmp, targetPath);
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}
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const publicPath = path.resolve(targetPath, 'public');
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if (fs.existsSync(publicPath)) fs.copySync(publicPath, publicTemp);
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global.addons.push(targetPath);
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} catch (e) {
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logger.error('Addon load fail: ', e);
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throw e;
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}
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} else logger.error(`Addon not found: ${addonPath}`);
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}
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process.on('unhandledRejection', logger.error);
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process.on('SIGINT', terminate);
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export async function load() {
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addon(path.resolve(__dirname, '..'));
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Error.stackTraceLimit = 50;
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process.on('message', messageHandler);
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cluster.on('message', messageHandler);
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if (cluster.isMaster || argv.startAsMaster) {
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logger.info(`Master ${process.pid} Starting`);
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process.stdin.setEncoding('utf8');
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process.stdin.on('data', (buf) => {
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const input = buf.toString();
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if (input[0] === '@') {
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for (const i in cluster.workers) {
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cluster.workers[i].send({ event: 'run', command: input.substr(1, input.length - 1) });
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break;
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}
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} else {
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executeCommand(input);
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}
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});
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const cnt = await entry({ entry: 'master' });
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logger.info('Master started');
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cluster.on('exit', (worker, code, signal) => {
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logger.warn(`Worker ${worker.process.pid} ${worker.id} exit: ${code} ${signal}`);
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});
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cluster.on('disconnect', (worker) => {
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logger.info(`Worker ${worker.process.pid} ${worker.id} disconnected`);
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});
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cluster.on('listening', (worker, address) => {
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logger.success(`Worker ${worker.process.pid} ${worker.id} listening at `, address);
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});
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cluster.on('online', (worker) => {
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logger.success(`Worker ${worker.process.pid} ${worker.id} is online`);
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});
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await startWorker(cnt);
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} else {
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global.addons = JSON.parse(Buffer.from(argv.addons as string, 'base64').toString());
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logger.info('%o', global.addons);
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if (argv.entry) {
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logger.info(`Worker ${process.pid} Starting as ${argv.entry}`);
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await entry({ entry: argv.entry as string });
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logger.success(`Worker ${process.pid} Started as ${argv.entry}`);
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} else {
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if (argv.firstWorker) global.Hydro.isFirstWorker = true;
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else global.Hydro.isFirstWorker = false;
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logger.info(`Worker ${process.pid} Starting`);
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await entry({ entry: 'worker' });
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logger.success(`Worker ${process.pid} Started`);
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}
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}
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if (global.gc) global.gc();
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}
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export async function loadCli() {
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await entry({ entry: 'cli' });
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return terminate();
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}
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if (argv.pandora || !module.parent) {
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const func = argv._[0] === 'cli' ? load : loadCli;
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func().catch((e) => {
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logger.error(e);
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process.exit(1);
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});
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}
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