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path: root/src/bundle/start.ts
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/*
	Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
	Copyright (C) 2023 Spacebar and Spacebar Contributors
	
	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Affero General Public License as published
	by the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.
	
	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Affero General Public License for more details.
	
	You should have received a copy of the GNU Affero General Public License
	along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

// process.env.MONGOMS_DEBUG = "true";
require("module-alias/register");
import "reflect-metadata";
import cluster, { Worker } from "cluster";
import os from "os";
import { red, bold, yellow, cyan } from "picocolors";
import { initStats } from "./stats";
import { config } from "dotenv";
config();
import { execSync } from "child_process";

const cores = process.env.THREADS ? parseInt(process.env.THREADS) : 1;

function getCommitOrFail() {
	try {
		return execSync("git rev-parse HEAD").toString().trim();
	} catch (e) {
		return null;
	}
}

if (cluster.isPrimary) {
	const commit = getCommitOrFail();

	console.log(
		bold(`
███████╗ ██████╗ ███████╗███████╗ ██████╗ ██████╗ ██████╗ ██████╗
██╔════╝██╔═══██╗██╔════╝██╔════╝██╔════╝██╔═══██╗██╔══██╗██╔══██╗
█████╗  ██║   ██║███████╗███████╗██║     ██║   ██║██████╔╝██║  ██║
██╔══╝  ██║   ██║╚════██║╚════██║██║     ██║   ██║██╔══██╗██║  ██║
██║     ╚██████╔╝███████║███████║╚██████╗╚██████╔╝██║  ██║██████╔╝
╚═╝      ╚═════╝ ╚══════╝╚══════╝ ╚═════╝ ╚═════╝ ╚═╝  ╚═╝╚═════╝

		fosscord-server | ${yellow(
			`Pre-release (${
				commit !== null
					? commit.slice(0, 7)
					: "Unknown (Git cannot be found)"
			})`,
		)}

Commit Hash: ${
			commit !== null
				? `${cyan(commit)} (${yellow(commit.slice(0, 7))})`
				: "Unknown (Git cannot be found)"
		}
Cores: ${cyan(os.cpus().length)} (Using ${cores} thread(s).)
`),
	);

	if (commit == null) {
		console.log(yellow(`Warning: Git is not installed or not in PATH.`));
	}

	initStats();

	console.log(`[Process] starting with ${cores} threads`);

	if (cores === 1) {
		require("./Server");
	} else {
		process.env.EVENT_TRANSMISSION = "process";

		// Fork workers.
		for (let i = 0; i < cores; i++) {
			// Delay each worker start if using sqlite database to prevent locking it
			const delay = process.env.DATABASE?.includes("://") ? 0 : i * 1000;
			setTimeout(() => {
				cluster.fork();
				console.log(`[Process] worker ${cyan(i)} started.`);
			}, delay);
		}

		cluster.on("message", (sender: Worker, message) => {
			for (const id in cluster.workers) {
				const worker = cluster.workers[id];
				if (worker === sender || !worker) continue;
				worker.send(message);
			}
		});

		cluster.on("exit", (worker) => {
			console.log(
				`[Worker] ${red(
					`died with PID: ${worker.process.pid} , restarting ...`,
				)}`,
			);
			cluster.fork();
		});
	}
} else {
	require("./Server");
}