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 mongo, { nativeDbConn } from './db/mongodb';
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import Logger from './misc/logger';
import EnvironmentInfo from './misc/environmentInfo';
import MachineInfo from './misc/machineInfo';
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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';
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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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}
const pkg = require('../package.json');
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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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main();
/**
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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 ${config.url}`);
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}
/**
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* Init worker process
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*/
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async function workerMain() {
// start server
await require('./server').default();
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if (cluster.isWorker) {
// Send a 'ready' message to parent process
process.send('ready');
}
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}
/**
* Init app
*/
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async function init(): Promise<Config> {
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Logger.info('Welcome to Misskey!');
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Logger.info(`<<< Misskey v${pkg.version} >>>`);
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new Logger('Deps').info(`Node.js ${process.version}`);
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await MachineInfo.show();
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EnvironmentInfo.show();
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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 (process.platform === 'linux' && !isRoot() && config.port < 1024) {
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Logger.error('You need root privileges to listen on port below 1024 on Linux');
process.exit(1);
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}
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if (await portscanner.checkPortStatus(config.port, '127.0.0.1') === 'open') {
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Logger.error(`Port ${config.port} is already in use`);
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process.exit(1);
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}
// Try to connect to MongoDB
checkMongoDb(config);
return config;
}
function checkMongoDb(config: Config) {
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const mongoDBLogger = new Logger('MongoDB');
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const u = config.mongodb.user ? encodeURIComponent(config.mongodb.user) : null;
const p = config.mongodb.pass ? encodeURIComponent(config.mongodb.pass) : null;
const uri = `mongodb://${u && p ? `${u}:****@` : ''}${config.mongodb.host}:${config.mongodb.port}/${config.mongodb.db}`;
mongoDBLogger.info(`Connecting to ${uri}`);
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mongo.then(() => {
nativeDbConn().then(db => db.admin().serverInfo()).then(x => x.version).then((version: string) => {
mongoDBLogger.info(`Version: ${version}`);
if (lessThan(version.split('.').map(x => parseInt(x, 10)), [3, 6])) {
mongoDBLogger.error(`MongoDB version is less than 3.6. Please upgrade it.`);
process.exit(1);
}
});
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mongoDBLogger.succ('Connectivity confirmed');
})
.catch(err => {
mongoDBLogger.error(err.message);
});
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}
function spawnWorkers(limit: number) {
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Logger.info('Starting workers...');
return new Promise(res => {
// Count the machine's CPUs
const cpuCount = os.cpus().length;
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const count = limit || cpuCount;
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let started = 0;
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// Create a worker for each CPU
for (let i = 0; i < count; i++) {
const worker = cluster.fork();
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worker.on('message', message => {
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if (message !== 'ready') return;
started++;
// When all workers started
if (started == count) {
Logger.succ('All workers started');
res();
}
});
}
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});
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}
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//#region Events
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// Listen new workers
cluster.on('fork', worker => {
clusterLog(`Process forked: [${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