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misskey/src/index.ts

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/**
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* Misskey Entry Point!
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*/
Error.stackTraceLimit = Infinity;
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require('events').EventEmitter.defaultMaxListeners = 128;
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import * as os from 'os';
import * as cluster from 'cluster';
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import * as debug from 'debug';
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import chalk from 'chalk';
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import * as portscanner from 'portscanner';
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import isRoot = require('is-root');
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import Xev from 'xev';
import * as program from 'commander';
import * as sysUtils from 'systeminformation';
import mongo, { nativeDbConn } from './db/mongodb';
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import Logger from './misc/logger';
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import serverStats from './daemons/server-stats';
import notesStats from './daemons/notes-stats';
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import loadConfig from './config/load';
import { Config } from './config/types';
import { lessThan } from './prelude/array';
import * as pkg from '../package.json';
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const clusterLog = debug('misskey:cluster');
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const ev = new Xev();
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if (process.env.NODE_ENV != 'production' && process.env.DEBUG == null) {
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debug.enable('misskey');
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}
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//#region Command line argument definitions
program
.version(pkg.version)
.option('--no-daemons', 'Disable daemon processes (for debbuging)')
.option('--disable-clustering', 'Disable clustering')
.parse(process.argv);
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//#endregion
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/**
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* Init process
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*/
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function main() {
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process.title = `Misskey (${cluster.isMaster ? 'master' : 'worker'})`;
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if (cluster.isMaster || program.disableClustering) {
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masterMain();
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if (cluster.isMaster) {
ev.mount();
}
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if (program.daemons) {
serverStats();
notesStats();
}
}
if (cluster.isWorker || program.disableClustering) {
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workerMain();
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}
}
/**
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* Init master process
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*/
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async function masterMain() {
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let config: Config;
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try {
// initialize app
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config = await init();
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} catch (e) {
console.error(e);
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Logger.error('Fatal error occurred during initialization');
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process.exit(1);
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}
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Logger.succ('Misskey initialized');
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if (!program.disableClustering) {
await spawnWorkers(config.clusterLimit);
}
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Logger.succ(`Now listening on port ${config.port} on ${config.url}`);
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}
/**
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* Init worker process
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*/
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async function workerMain() {
// start server
await require('./server').default();
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if (cluster.isWorker) {
// Send a 'ready' message to parent process
process.send('ready');
}
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}
const runningNodejsVersion = process.version.slice(1).split('.').map(x => parseInt(x, 10));
const requiredNodejsVersion = [10, 0, 0];
const satisfyNodejsVersion = !lessThan(runningNodejsVersion, requiredNodejsVersion);
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function isWellKnownPort(port: number): boolean {
return port < 1024;
}
async function isPortAvailable(port: number): Promise<boolean> {
return await portscanner.checkPortStatus(port, '127.0.0.1') === 'closed';
}
async function showMachine() {
const logger = new Logger('Machine');
logger.info(`Hostname: ${os.hostname()}`);
logger.info(`Platform: ${process.platform}`);
logger.info(`Architecture: ${process.arch}`);
logger.info(`CPU: ${os.cpus().length} core`);
const mem = await sysUtils.mem();
const totalmem = (mem.total / 1024 / 1024 / 1024).toFixed(1);
const availmem = (mem.available / 1024 / 1024 / 1024).toFixed(1);
logger.info(`MEM: ${totalmem}GB (available: ${availmem}GB)`);
}
function showEnvironment(): void {
const env = process.env.NODE_ENV;
const logger = new Logger('Env');
logger.info(typeof env == 'undefined' ? 'NODE_ENV is not set' : `NODE_ENV: ${env}`);
if (env !== 'production') {
logger.warn('The environment is not in production mode');
logger.warn('Do not use for production purpose');
}
logger.info(`You ${isRoot() ? '' : 'do not '}have root privileges`);
}
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/**
* Init app
*/
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async function init(): Promise<Config> {
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Logger.info('Welcome to Misskey!');
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Logger.info(`<<< Misskey v${pkg.version} >>>`);
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new Logger('Nodejs').info(`Version ${runningNodejsVersion.join('.')}`);
if (!satisfyNodejsVersion) {
new Logger('Nodejs').error(`Node.js version is less than ${requiredNodejsVersion.join('.')}. Please upgrade it.`);
process.exit(1);
}
await showMachine();
showEnvironment();
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const configLogger = new Logger('Config');
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let config;
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try {
config = loadConfig();
} catch (exception) {
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if (typeof exception === 'string') {
configLogger.error(exception);
process.exit(1);
}
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if (exception.code === 'ENOENT') {
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configLogger.error('Configuration file not found');
process.exit(1);
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}
throw exception;
}
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configLogger.succ('Loaded');
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if (config.port == null) {
Logger.error('The port is not configured. Please configure port.');
process.exit(1);
}
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if (process.platform === 'linux' && isWellKnownPort(config.port) && !isRoot()) {
Logger.error('You need root privileges to listen on well-known port on Linux');
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process.exit(1);
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}
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if (!await isPortAvailable(config.port)) {
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Logger.error(`Port ${config.port} is already in use`);
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process.exit(1);
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}
// Try to connect to MongoDB
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await checkMongoDB(config);
return config;
}
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const requiredMongoDBVersion = [3, 6];
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function checkMongoDB(config: Config) {
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const mongoDBLogger = new Logger('MongoDB');
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const u = config.mongodb.user ? encodeURIComponent(config.mongodb.user) : null;
const p = config.mongodb.pass ? encodeURIComponent(config.mongodb.pass) : null;
const uri = `mongodb://${u && p ? `${u}:****@` : ''}${config.mongodb.host}:${config.mongodb.port}/${config.mongodb.db}`;
mongoDBLogger.info(`Connecting to ${uri}`);
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mongo.then(() => {
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mongoDBLogger.succ('Connectivity confirmed');
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nativeDbConn().then(db => db.admin().serverInfo()).then(x => x.version).then((version: string) => {
mongoDBLogger.info(`Version: ${version}`);
if (lessThan(version.split('.').map(x => parseInt(x, 10)), requiredMongoDBVersion)) {
mongoDBLogger.error(`MongoDB version is less than ${requiredMongoDBVersion.join('.')}. Please upgrade it.`);
process.exit(1);
}
});
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}).catch(err => {
mongoDBLogger.error(err.message);
});
}
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async function spawnWorkers(limit: number = Infinity) {
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const workers = Math.min(limit, os.cpus().length);
Logger.info(`Starting ${workers} worker${workers === 1 ? '' : 's'}...`);
await Promise.all([...Array(workers)].map(spawnWorker));
Logger.succ('All workers started');
}
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function spawnWorker(): Promise<void> {
return new Promise(res => {
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const worker = cluster.fork();
worker.on('message', message => {
if (message !== 'ready') return;
Logger.succ('A worker started');
res();
});
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});
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}
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//#region Events
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// Listen new workers
cluster.on('fork', worker => {
clusterLog(`Process forked: [${worker.id}]`);
});
// Listen online workers
cluster.on('online', worker => {
clusterLog(`Process is now online: [${worker.id}]`);
});
// Listen for dying workers
cluster.on('exit', worker => {
// Replace the dead worker,
// we're not sentimental
clusterLog(chalk.red(`[${worker.id}] died :(`));
cluster.fork();
});
// Display detail of unhandled promise rejection
process.on('unhandledRejection', console.dir);
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// Display detail of uncaught exception
process.on('uncaughtException', err => {
console.error(err);
});
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// Dying away...
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process.on('exit', code => {
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Logger.info(`The process is going to exit with code ${code}`);
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});
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//#endregion
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main();