489 lines
14 KiB
JavaScript
489 lines
14 KiB
JavaScript
const os = require('os');
|
|
const throng = require('throng');
|
|
const dotenv = require('dotenv');
|
|
const express = require('express');
|
|
const http = require('http');
|
|
const redis = require('redis');
|
|
const pg = require('pg');
|
|
const log = require('npmlog');
|
|
const url = require('url');
|
|
const WebSocket = require('uws');
|
|
const uuid = require('uuid');
|
|
|
|
const env = process.env.NODE_ENV || 'development';
|
|
|
|
dotenv.config({
|
|
path: env === 'production' ? '.env.production' : '.env',
|
|
});
|
|
|
|
log.level = process.env.LOG_LEVEL || 'verbose';
|
|
|
|
const dbUrlToConfig = (dbUrl) => {
|
|
if (!dbUrl) {
|
|
return {};
|
|
}
|
|
|
|
const params = url.parse(dbUrl);
|
|
const config = {};
|
|
|
|
if (params.auth) {
|
|
[config.user, config.password] = params.auth.split(':');
|
|
}
|
|
|
|
if (params.hostname) {
|
|
config.host = params.hostname;
|
|
}
|
|
|
|
if (params.port) {
|
|
config.port = params.port;
|
|
}
|
|
|
|
if (params.pathname) {
|
|
config.database = params.pathname.split('/')[1];
|
|
}
|
|
|
|
const ssl = params.query && params.query.ssl;
|
|
|
|
if (ssl) {
|
|
config.ssl = ssl === 'true' || ssl === '1';
|
|
}
|
|
|
|
return config;
|
|
};
|
|
|
|
const redisUrlToClient = (defaultConfig, redisUrl) => {
|
|
const config = defaultConfig;
|
|
|
|
if (!redisUrl) {
|
|
return redis.createClient(config);
|
|
}
|
|
|
|
if (redisUrl.startsWith('unix://')) {
|
|
return redis.createClient(redisUrl.slice(7), config);
|
|
}
|
|
|
|
return redis.createClient(Object.assign(config, {
|
|
url: redisUrl,
|
|
}));
|
|
};
|
|
|
|
const numWorkers = +process.env.STREAMING_CLUSTER_NUM || (env === 'development' ? 1 : Math.max(os.cpus().length - 1, 1));
|
|
|
|
const startMaster = () => {
|
|
log.info(`Starting streaming API server master with ${numWorkers} workers`);
|
|
};
|
|
|
|
const startWorker = (workerId) => {
|
|
log.info(`Starting worker ${workerId}`);
|
|
|
|
const pgConfigs = {
|
|
development: {
|
|
user: process.env.DB_USER || pg.defaults.user,
|
|
password: process.env.DB_PASS || pg.defaults.password,
|
|
database: 'mastodon_development',
|
|
host: process.env.DB_HOST || pg.defaults.host,
|
|
port: process.env.DB_PORT || pg.defaults.port,
|
|
max: 10,
|
|
},
|
|
|
|
production: {
|
|
user: process.env.DB_USER || 'mastodon',
|
|
password: process.env.DB_PASS || '',
|
|
database: process.env.DB_NAME || 'mastodon_production',
|
|
host: process.env.DB_HOST || 'localhost',
|
|
port: process.env.DB_PORT || 5432,
|
|
max: 10,
|
|
},
|
|
};
|
|
|
|
const app = express();
|
|
const pgPool = new pg.Pool(Object.assign(pgConfigs[env], dbUrlToConfig(process.env.DATABASE_URL)));
|
|
const server = http.createServer(app);
|
|
const redisNamespace = process.env.REDIS_NAMESPACE || null;
|
|
|
|
const redisParams = {
|
|
host: process.env.REDIS_HOST || '127.0.0.1',
|
|
port: process.env.REDIS_PORT || 6379,
|
|
db: process.env.REDIS_DB || 0,
|
|
password: process.env.REDIS_PASSWORD,
|
|
};
|
|
|
|
if (redisNamespace) {
|
|
redisParams.namespace = redisNamespace;
|
|
}
|
|
|
|
const redisPrefix = redisNamespace ? `${redisNamespace}:` : '';
|
|
|
|
const redisSubscribeClient = redisUrlToClient(redisParams, process.env.REDIS_URL);
|
|
const redisClient = redisUrlToClient(redisParams, process.env.REDIS_URL);
|
|
|
|
const subs = {};
|
|
|
|
redisSubscribeClient.on('message', (channel, message) => {
|
|
const callbacks = subs[channel];
|
|
|
|
log.silly(`New message on channel ${channel}`);
|
|
|
|
if (!callbacks) {
|
|
return;
|
|
}
|
|
|
|
callbacks.forEach(callback => callback(message));
|
|
});
|
|
|
|
const subscriptionHeartbeat = (channel) => {
|
|
const interval = 6*60;
|
|
const tellSubscribed = () => {
|
|
redisClient.set(`${redisPrefix}subscribed:${channel}`, '1', 'EX', interval*3);
|
|
};
|
|
tellSubscribed();
|
|
const heartbeat = setInterval(tellSubscribed, interval*1000);
|
|
return () => {
|
|
clearInterval(heartbeat);
|
|
};
|
|
};
|
|
|
|
const subscribe = (channel, callback) => {
|
|
log.silly(`Adding listener for ${channel}`);
|
|
subs[channel] = subs[channel] || [];
|
|
if (subs[channel].length === 0) {
|
|
log.verbose(`Subscribe ${channel}`);
|
|
redisSubscribeClient.subscribe(channel);
|
|
}
|
|
subs[channel].push(callback);
|
|
};
|
|
|
|
const unsubscribe = (channel, callback) => {
|
|
log.silly(`Removing listener for ${channel}`);
|
|
subs[channel] = subs[channel].filter(item => item !== callback);
|
|
if (subs[channel].length === 0) {
|
|
log.verbose(`Unsubscribe ${channel}`);
|
|
redisSubscribeClient.unsubscribe(channel);
|
|
}
|
|
};
|
|
|
|
const allowCrossDomain = (req, res, next) => {
|
|
res.header('Access-Control-Allow-Origin', '*');
|
|
res.header('Access-Control-Allow-Headers', 'Authorization, Accept, Cache-Control');
|
|
res.header('Access-Control-Allow-Methods', 'GET, OPTIONS');
|
|
|
|
next();
|
|
};
|
|
|
|
const setRequestId = (req, res, next) => {
|
|
req.requestId = uuid.v4();
|
|
res.header('X-Request-Id', req.requestId);
|
|
|
|
next();
|
|
};
|
|
|
|
const accountFromToken = (token, req, next) => {
|
|
pgPool.connect((err, client, done) => {
|
|
if (err) {
|
|
next(err);
|
|
return;
|
|
}
|
|
|
|
client.query('SELECT oauth_access_tokens.resource_owner_id, users.account_id, users.filtered_languages FROM oauth_access_tokens INNER JOIN users ON oauth_access_tokens.resource_owner_id = users.id WHERE oauth_access_tokens.token = $1 AND oauth_access_tokens.revoked_at IS NULL LIMIT 1', [token], (err, result) => {
|
|
done();
|
|
|
|
if (err) {
|
|
next(err);
|
|
return;
|
|
}
|
|
|
|
if (result.rows.length === 0) {
|
|
err = new Error('Invalid access token');
|
|
err.statusCode = 401;
|
|
|
|
next(err);
|
|
return;
|
|
}
|
|
|
|
req.accountId = result.rows[0].account_id;
|
|
req.filteredLanguages = result.rows[0].filtered_languages;
|
|
|
|
next();
|
|
});
|
|
});
|
|
};
|
|
|
|
const accountFromRequest = (req, next) => {
|
|
const authorization = req.headers.authorization;
|
|
const location = url.parse(req.url, true);
|
|
const accessToken = location.query.access_token;
|
|
|
|
if (!authorization && !accessToken) {
|
|
const err = new Error('Missing access token');
|
|
err.statusCode = 401;
|
|
|
|
next(err);
|
|
return;
|
|
}
|
|
|
|
const token = authorization ? authorization.replace(/^Bearer /, '') : accessToken;
|
|
|
|
accountFromToken(token, req, next);
|
|
};
|
|
|
|
const wsVerifyClient = (info, cb) => {
|
|
accountFromRequest(info.req, err => {
|
|
if (!err) {
|
|
cb(true, undefined, undefined);
|
|
} else {
|
|
log.error(info.req.requestId, err.toString());
|
|
cb(false, 401, 'Unauthorized');
|
|
}
|
|
});
|
|
};
|
|
|
|
const authenticationMiddleware = (req, res, next) => {
|
|
if (req.method === 'OPTIONS') {
|
|
next();
|
|
return;
|
|
}
|
|
|
|
accountFromRequest(req, next);
|
|
};
|
|
|
|
const errorMiddleware = (err, req, res, {}) => {
|
|
log.error(req.requestId, err.toString());
|
|
res.writeHead(err.statusCode || 500, { 'Content-Type': 'application/json' });
|
|
res.end(JSON.stringify({ error: err.statusCode ? err.toString() : 'An unexpected error occurred' }));
|
|
};
|
|
|
|
const placeholders = (arr, shift = 0) => arr.map((_, i) => `$${i + 1 + shift}`).join(', ');
|
|
|
|
const streamFrom = (id, req, output, attachCloseHandler, needsFiltering = false, notificationOnly = false) => {
|
|
const streamType = notificationOnly ? ' (notification)' : '';
|
|
log.verbose(req.requestId, `Starting stream from ${id} for ${req.accountId}${streamType}`);
|
|
|
|
const listener = message => {
|
|
const { event, payload, queued_at } = JSON.parse(message);
|
|
|
|
const transmit = () => {
|
|
const now = new Date().getTime();
|
|
const delta = now - queued_at;
|
|
const encodedPayload = typeof payload === 'number' ? payload : JSON.stringify(payload);
|
|
|
|
log.silly(req.requestId, `Transmitting for ${req.accountId}: ${event} ${encodedPayload} Delay: ${delta}ms`);
|
|
output(event, encodedPayload);
|
|
};
|
|
|
|
if (notificationOnly && event !== 'notification') {
|
|
return;
|
|
}
|
|
|
|
// Only messages that may require filtering are statuses, since notifications
|
|
// are already personalized and deletes do not matter
|
|
if (needsFiltering && event === 'update') {
|
|
pgPool.connect((err, client, done) => {
|
|
if (err) {
|
|
log.error(err);
|
|
return;
|
|
}
|
|
|
|
const unpackedPayload = payload;
|
|
const targetAccountIds = [unpackedPayload.account.id].concat(unpackedPayload.mentions.map(item => item.id));
|
|
const accountDomain = unpackedPayload.account.acct.split('@')[1];
|
|
|
|
if (Array.isArray(req.filteredLanguages) && req.filteredLanguages.indexOf(unpackedPayload.language) !== -1) {
|
|
log.silly(req.requestId, `Message ${unpackedPayload.id} filtered by language (${unpackedPayload.language})`);
|
|
done();
|
|
return;
|
|
}
|
|
|
|
const queries = [
|
|
client.query(`SELECT 1 FROM blocks WHERE (account_id = $1 AND target_account_id IN (${placeholders(targetAccountIds, 2)})) OR (account_id = $2 AND target_account_id = $1) UNION SELECT 1 FROM mutes WHERE account_id = $1 AND target_account_id IN (${placeholders(targetAccountIds, 2)})`, [req.accountId, unpackedPayload.account.id].concat(targetAccountIds)),
|
|
];
|
|
|
|
if (accountDomain) {
|
|
queries.push(client.query('SELECT 1 FROM account_domain_blocks WHERE account_id = $1 AND domain = $2', [req.accountId, accountDomain]));
|
|
}
|
|
|
|
Promise.all(queries).then(values => {
|
|
done();
|
|
|
|
if (values[0].rows.length > 0 || (values.length > 1 && values[1].rows.length > 0)) {
|
|
return;
|
|
}
|
|
|
|
transmit();
|
|
}).catch(err => {
|
|
done();
|
|
log.error(err);
|
|
});
|
|
});
|
|
} else {
|
|
transmit();
|
|
}
|
|
};
|
|
|
|
subscribe(`${redisPrefix}${id}`, listener);
|
|
attachCloseHandler(`${redisPrefix}${id}`, listener);
|
|
};
|
|
|
|
// Setup stream output to HTTP
|
|
const streamToHttp = (req, res) => {
|
|
res.setHeader('Content-Type', 'text/event-stream');
|
|
res.setHeader('Transfer-Encoding', 'chunked');
|
|
|
|
const heartbeat = setInterval(() => res.write(':thump\n'), 15000);
|
|
|
|
req.on('close', () => {
|
|
log.verbose(req.requestId, `Ending stream for ${req.accountId}`);
|
|
clearInterval(heartbeat);
|
|
});
|
|
|
|
return (event, payload) => {
|
|
res.write(`event: ${event}\n`);
|
|
res.write(`data: ${payload}\n\n`);
|
|
};
|
|
};
|
|
|
|
// Setup stream end for HTTP
|
|
const streamHttpEnd = (req, closeHandler = false) => (id, listener) => {
|
|
req.on('close', () => {
|
|
unsubscribe(id, listener);
|
|
if (closeHandler) {
|
|
closeHandler();
|
|
}
|
|
});
|
|
};
|
|
|
|
// Setup stream output to WebSockets
|
|
const streamToWs = (req, ws) => (event, payload) => {
|
|
if (ws.readyState !== ws.OPEN) {
|
|
log.error(req.requestId, 'Tried writing to closed socket');
|
|
return;
|
|
}
|
|
|
|
ws.send(JSON.stringify({ event, payload }));
|
|
};
|
|
|
|
// Setup stream end for WebSockets
|
|
const streamWsEnd = (req, ws, closeHandler = false) => (id, listener) => {
|
|
ws.on('close', () => {
|
|
log.verbose(req.requestId, `Ending stream for ${req.accountId}`);
|
|
unsubscribe(id, listener);
|
|
if (closeHandler) {
|
|
closeHandler();
|
|
}
|
|
});
|
|
|
|
ws.on('error', () => {
|
|
log.verbose(req.requestId, `Ending stream for ${req.accountId}`);
|
|
unsubscribe(id, listener);
|
|
if (closeHandler) {
|
|
closeHandler();
|
|
}
|
|
});
|
|
};
|
|
|
|
app.use(setRequestId);
|
|
app.use(allowCrossDomain);
|
|
app.use(authenticationMiddleware);
|
|
app.use(errorMiddleware);
|
|
|
|
app.get('/api/v1/streaming/user', (req, res) => {
|
|
const channel = `timeline:${req.accountId}`;
|
|
streamFrom(channel, req, streamToHttp(req, res), streamHttpEnd(req, subscriptionHeartbeat(channel)));
|
|
});
|
|
|
|
app.get('/api/v1/streaming/user/notification', (req, res) => {
|
|
streamFrom(`timeline:${req.accountId}`, req, streamToHttp(req, res), streamHttpEnd(req), false, true);
|
|
});
|
|
|
|
app.get('/api/v1/streaming/public', (req, res) => {
|
|
streamFrom('timeline:public', req, streamToHttp(req, res), streamHttpEnd(req), true);
|
|
});
|
|
|
|
app.get('/api/v1/streaming/public/local', (req, res) => {
|
|
streamFrom('timeline:public:local', req, streamToHttp(req, res), streamHttpEnd(req), true);
|
|
});
|
|
|
|
app.get('/api/v1/streaming/hashtag', (req, res) => {
|
|
streamFrom(`timeline:hashtag:${req.query.tag}`, req, streamToHttp(req, res), streamHttpEnd(req), true);
|
|
});
|
|
|
|
app.get('/api/v1/streaming/hashtag/local', (req, res) => {
|
|
streamFrom(`timeline:hashtag:${req.query.tag}:local`, req, streamToHttp(req, res), streamHttpEnd(req), true);
|
|
});
|
|
|
|
const wss = new WebSocket.Server({ server, verifyClient: wsVerifyClient });
|
|
|
|
wss.on('connection', ws => {
|
|
const req = ws.upgradeReq;
|
|
const location = url.parse(req.url, true);
|
|
req.requestId = uuid.v4();
|
|
|
|
ws.isAlive = true;
|
|
|
|
ws.on('pong', () => {
|
|
ws.isAlive = true;
|
|
});
|
|
|
|
switch(location.query.stream) {
|
|
case 'user':
|
|
const channel = `timeline:${req.accountId}`;
|
|
streamFrom(channel, req, streamToWs(req, ws), streamWsEnd(req, ws, subscriptionHeartbeat(channel)));
|
|
break;
|
|
case 'user:notification':
|
|
streamFrom(`timeline:${req.accountId}`, req, streamToWs(req, ws), streamWsEnd(req, ws), false, true);
|
|
break;
|
|
case 'public':
|
|
streamFrom('timeline:public', req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
|
break;
|
|
case 'public:local':
|
|
streamFrom('timeline:public:local', req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
|
break;
|
|
case 'hashtag':
|
|
streamFrom(`timeline:hashtag:${location.query.tag}`, req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
|
break;
|
|
case 'hashtag:local':
|
|
streamFrom(`timeline:hashtag:${location.query.tag}:local`, req, streamToWs(req, ws), streamWsEnd(req, ws), true);
|
|
break;
|
|
default:
|
|
ws.close();
|
|
}
|
|
});
|
|
|
|
setInterval(() => {
|
|
wss.clients.forEach(ws => {
|
|
if (ws.isAlive === false) {
|
|
ws.terminate();
|
|
return;
|
|
}
|
|
|
|
ws.isAlive = false;
|
|
ws.ping('', false, true);
|
|
});
|
|
}, 30000);
|
|
|
|
server.listen(process.env.PORT || 4000, () => {
|
|
log.info(`Worker ${workerId} now listening on ${server.address().address}:${server.address().port}`);
|
|
});
|
|
|
|
const onExit = () => {
|
|
log.info(`Worker ${workerId} exiting, bye bye`);
|
|
server.close();
|
|
process.exit(0);
|
|
};
|
|
|
|
const onError = (err) => {
|
|
log.error(err);
|
|
};
|
|
|
|
process.on('SIGINT', onExit);
|
|
process.on('SIGTERM', onExit);
|
|
process.on('exit', onExit);
|
|
process.on('error', onError);
|
|
};
|
|
|
|
throng({
|
|
workers: numWorkers,
|
|
lifetime: Infinity,
|
|
start: startWorker,
|
|
master: startMaster,
|
|
});
|