342 lines
9.7 KiB
JavaScript
342 lines
9.7 KiB
JavaScript
import os from 'os';
|
|
import cluster from 'cluster';
|
|
import dotenv from 'dotenv'
|
|
import express from 'express'
|
|
import http from 'http'
|
|
import redis from 'redis'
|
|
import pg from 'pg'
|
|
import log from 'npmlog'
|
|
import url from 'url'
|
|
import WebSocket from 'ws'
|
|
import uuid from 'uuid'
|
|
|
|
const env = process.env.NODE_ENV || 'development'
|
|
|
|
dotenv.config({
|
|
path: env === 'production' ? '.env.production' : '.env'
|
|
})
|
|
|
|
if (cluster.isMaster) {
|
|
// cluster master
|
|
|
|
const core = +process.env.STREAMING_CLUSTER_NUM || (env === 'development' ? 1 : Math.max(os.cpus().length - 1, 1))
|
|
const fork = () => {
|
|
const worker = cluster.fork();
|
|
worker.on('exit', (code, signal) => {
|
|
log.error(`Worker died with exit code ${code}, signal ${signal} received.`);
|
|
setTimeout(() => fork(), 0);
|
|
});
|
|
};
|
|
for (let i = 0; i < core; i++) fork();
|
|
log.info(`Starting streaming API server master with ${core} workers`)
|
|
|
|
} else {
|
|
// cluster worker
|
|
|
|
const pgConfigs = {
|
|
development: {
|
|
database: 'mastodon_development',
|
|
host: '/var/run/postgresql',
|
|
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(pgConfigs[env])
|
|
const server = http.createServer(app)
|
|
const wss = new WebSocket.Server({ server })
|
|
|
|
const redisClient = redis.createClient({
|
|
host: process.env.REDIS_HOST || '127.0.0.1',
|
|
port: process.env.REDIS_PORT || 6379,
|
|
password: process.env.REDIS_PASSWORD
|
|
})
|
|
|
|
const subs = {}
|
|
|
|
redisClient.on('pmessage', (_, channel, message) => {
|
|
const callbacks = subs[channel]
|
|
|
|
log.silly(`New message on channel ${channel}`)
|
|
|
|
if (!callbacks) {
|
|
return
|
|
}
|
|
|
|
callbacks.forEach(callback => callback(message))
|
|
})
|
|
|
|
redisClient.psubscribe('timeline:*')
|
|
|
|
const subscribe = (channel, callback) => {
|
|
log.silly(`Adding listener for ${channel}`)
|
|
subs[channel] = subs[channel] || []
|
|
subs[channel].push(callback)
|
|
}
|
|
|
|
const unsubscribe = (channel, callback) => {
|
|
log.silly(`Removing listener for ${channel}`)
|
|
subs[channel] = subs[channel].filter(item => item !== callback)
|
|
}
|
|
|
|
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 FROM oauth_access_tokens INNER JOIN users ON oauth_access_tokens.resource_owner_id = users.id WHERE oauth_access_tokens.token = $1 LIMIT 1', [token], (err, result) => {
|
|
done()
|
|
|
|
if (err) {
|
|
next(err)
|
|
return
|
|
}
|
|
|
|
if (result.rows.length === 0) {
|
|
err = new Error('Invalid access token')
|
|
err.statusCode = 401
|
|
|
|
next(err)
|
|
return
|
|
}
|
|
|
|
req.accountId = result.rows[0].account_id
|
|
|
|
next()
|
|
})
|
|
})
|
|
}
|
|
|
|
const authenticationMiddleware = (req, res, next) => {
|
|
if (req.method === 'OPTIONS') {
|
|
next()
|
|
return
|
|
}
|
|
|
|
const authorization = req.get('Authorization')
|
|
|
|
if (!authorization) {
|
|
const err = new Error('Missing access token')
|
|
err.statusCode = 401
|
|
|
|
next(err)
|
|
return
|
|
}
|
|
|
|
const token = authorization.replace(/^Bearer /, '')
|
|
|
|
accountFromToken(token, req, next)
|
|
}
|
|
|
|
const errorMiddleware = (err, req, res, next) => {
|
|
log.error(req.requestId, err)
|
|
res.writeHead(err.statusCode || 500, { 'Content-Type': 'application/json' })
|
|
res.end(JSON.stringify({ error: err.statusCode ? `${err}` : 'An unexpected error occurred' }))
|
|
}
|
|
|
|
const placeholders = (arr, shift = 0) => arr.map((_, i) => `$${i + 1 + shift}`).join(', ');
|
|
|
|
const streamFrom = (id, req, output, attachCloseHandler, needsFiltering = false) => {
|
|
log.verbose(req.requestId, `Starting stream from ${id} for ${req.accountId}`)
|
|
|
|
const listener = message => {
|
|
const { event, payload, queued_at } = JSON.parse(message)
|
|
|
|
const transmit = () => {
|
|
const now = new Date().getTime()
|
|
const delta = now - queued_at;
|
|
|
|
log.silly(req.requestId, `Transmitting for ${req.accountId}: ${event} ${payload} Delay: ${delta}ms`)
|
|
output(event, payload)
|
|
}
|
|
|
|
// 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 = JSON.parse(payload)
|
|
const targetAccountIds = [unpackedPayload.account.id].concat(unpackedPayload.mentions.map(item => item.id)).concat(unpackedPayload.reblog ? [unpackedPayload.reblog.account.id] : [])
|
|
|
|
client.query(`SELECT target_account_id FROM blocks WHERE account_id = $1 AND target_account_id IN (${placeholders(targetAccountIds, 1)}) UNION SELECT target_account_id FROM mutes WHERE account_id = $1 AND target_account_id IN (${placeholders(targetAccountIds, 1)})`, [req.accountId].concat(targetAccountIds), (err, result) => {
|
|
done()
|
|
|
|
if (err) {
|
|
log.error(err)
|
|
return
|
|
}
|
|
|
|
if (result.rows.length > 0) {
|
|
return
|
|
}
|
|
|
|
transmit()
|
|
})
|
|
})
|
|
} else {
|
|
transmit()
|
|
}
|
|
}
|
|
|
|
subscribe(id, listener)
|
|
attachCloseHandler(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 => (id, listener) => {
|
|
req.on('close', () => {
|
|
unsubscribe(id, listener)
|
|
})
|
|
}
|
|
|
|
// Setup stream output to WebSockets
|
|
const streamToWs = (req, ws) => {
|
|
const heartbeat = setInterval(() => ws.ping(), 15000)
|
|
|
|
ws.on('close', () => {
|
|
log.verbose(req.requestId, `Ending stream for ${req.accountId}`)
|
|
clearInterval(heartbeat)
|
|
})
|
|
|
|
return (event, payload) => {
|
|
if (ws.readyState !== ws.OPEN) {
|
|
log.error(req.requestId, 'Tried writing to closed socket')
|
|
return
|
|
}
|
|
|
|
ws.send(JSON.stringify({ event, payload }))
|
|
}
|
|
}
|
|
|
|
// Setup stream end for WebSockets
|
|
const streamWsEnd = ws => (id, listener) => {
|
|
ws.on('close', () => {
|
|
unsubscribe(id, listener)
|
|
})
|
|
|
|
ws.on('error', e => {
|
|
unsubscribe(id, listener)
|
|
})
|
|
}
|
|
|
|
app.use(setRequestId)
|
|
app.use(allowCrossDomain)
|
|
app.use(authenticationMiddleware)
|
|
app.use(errorMiddleware)
|
|
|
|
app.get('/api/v1/streaming/user', (req, res) => {
|
|
streamFrom(`timeline:${req.accountId}`, req, streamToHttp(req, res), streamHttpEnd(req))
|
|
})
|
|
|
|
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)
|
|
})
|
|
|
|
wss.on('connection', ws => {
|
|
const location = url.parse(ws.upgradeReq.url, true)
|
|
const token = location.query.access_token
|
|
const req = { requestId: uuid.v4() }
|
|
|
|
accountFromToken(token, req, err => {
|
|
if (err) {
|
|
log.error(req.requestId, err)
|
|
ws.close()
|
|
return
|
|
}
|
|
|
|
switch(location.query.stream) {
|
|
case 'user':
|
|
streamFrom(`timeline:${req.accountId}`, req, streamToWs(req, ws), streamWsEnd(ws))
|
|
break;
|
|
case 'public':
|
|
streamFrom('timeline:public', req, streamToWs(req, ws), streamWsEnd(ws), true)
|
|
break;
|
|
case 'public:local':
|
|
streamFrom('timeline:public:local', req, streamToWs(req, ws), streamWsEnd(ws), true)
|
|
break;
|
|
case 'hashtag':
|
|
streamFrom(`timeline:hashtag:${location.query.tag}`, req, streamToWs(req, ws), streamWsEnd(ws), true)
|
|
break;
|
|
case 'hashtag:local':
|
|
streamFrom(`timeline:hashtag:${location.query.tag}:local`, req, streamToWs(req, ws), streamWsEnd(ws), true)
|
|
break;
|
|
default:
|
|
ws.close()
|
|
}
|
|
})
|
|
})
|
|
|
|
server.listen(process.env.PORT || 4000, () => {
|
|
log.level = process.env.LOG_LEVEL || 'verbose'
|
|
log.info(`Starting streaming API server worker on ${server.address().address}:${server.address().port}`)
|
|
})
|
|
|
|
process.on('SIGINT', exit)
|
|
process.on('SIGTERM', exit)
|
|
process.on('exit', exit)
|
|
|
|
function exit() {
|
|
server.close()
|
|
}
|
|
}
|