forked from mirrors/catstodon
Improve streaming server with cluster (#1970)
This commit is contained in:
geta6
Eugen
parent
7a5086729a
commit
64e1d51025
2 changed files with 272 additions and 248 deletions
|
|
@ -81,3 +81,7 @@ SMTP_FROM_ADDRESS=notifications@example.com
|
|||
# Advanced settings
|
||||
# If you need to use pgBouncer, you need to disable prepared statements:
|
||||
# PREPARED_STATEMENTS=false
|
||||
|
||||
# Cluster number setting for streaming API server.
|
||||
# If you comment out following line, cluster number will be `numOfCpuCores - 1`.
|
||||
STREAMING_CLUSTER_NUM=1
|
||||
|
|
|
|||
|
|
@ -1,3 +1,5 @@
|
|||
import os from 'os';
|
||||
import cluster from 'cluster';
|
||||
import dotenv from 'dotenv'
|
||||
import express from 'express'
|
||||
import http from 'http'
|
||||
|
|
@ -14,7 +16,24 @@ dotenv.config({
|
|||
path: env === 'production' ? '.env.production' : '.env'
|
||||
})
|
||||
|
||||
const pgConfigs = {
|
||||
if (cluster.isMaster) {
|
||||
// cluster master
|
||||
|
||||
const core = +process.env.STREAMING_CLUSTER_NUM || (env === 'development' ? 1 : os.cpus().length - 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',
|
||||
|
|
@ -29,22 +48,22 @@ const pgConfigs = {
|
|||
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 app = express()
|
||||
const pgPool = new pg.Pool(pgConfigs[env])
|
||||
const server = http.createServer(app)
|
||||
const wss = new WebSocket.Server({ server })
|
||||
|
||||
const redisClient = redis.createClient({
|
||||
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 = {}
|
||||
const subs = {}
|
||||
|
||||
redisClient.on('pmessage', (_, channel, message) => {
|
||||
redisClient.on('pmessage', (_, channel, message) => {
|
||||
const callbacks = subs[channel]
|
||||
|
||||
log.silly(`New message on channel ${channel}`)
|
||||
|
|
@ -54,37 +73,37 @@ redisClient.on('pmessage', (_, channel, message) => {
|
|||
}
|
||||
|
||||
callbacks.forEach(callback => callback(message))
|
||||
})
|
||||
})
|
||||
|
||||
redisClient.psubscribe('timeline:*')
|
||||
redisClient.psubscribe('timeline:*')
|
||||
|
||||
const subscribe = (channel, callback) => {
|
||||
const subscribe = (channel, callback) => {
|
||||
log.silly(`Adding listener for ${channel}`)
|
||||
subs[channel] = subs[channel] || []
|
||||
subs[channel].push(callback)
|
||||
}
|
||||
}
|
||||
|
||||
const unsubscribe = (channel, callback) => {
|
||||
const unsubscribe = (channel, callback) => {
|
||||
log.silly(`Removing listener for ${channel}`)
|
||||
subs[channel] = subs[channel].filter(item => item !== callback)
|
||||
}
|
||||
}
|
||||
|
||||
const allowCrossDomain = (req, res, next) => {
|
||||
const allowCrossDomain = (req, res, next) => {
|
||||
res.header('Access-Control-Allow-Origin', '*')
|
||||
res.header('Access-Control-Allow-Headers', 'Authorization, Accept, Cache-Control')
|
||||
res.header('Access-Control-Allow-Methods', 'GET, OPTIONS')
|
||||
|
||||
next()
|
||||
}
|
||||
}
|
||||
|
||||
const setRequestId = (req, res, next) => {
|
||||
const setRequestId = (req, res, next) => {
|
||||
req.requestId = uuid.v4()
|
||||
res.header('X-Request-Id', req.requestId)
|
||||
|
||||
next()
|
||||
}
|
||||
}
|
||||
|
||||
const accountFromToken = (token, req, next) => {
|
||||
const accountFromToken = (token, req, next) => {
|
||||
pgPool.connect((err, client, done) => {
|
||||
if (err) {
|
||||
next(err)
|
||||
|
|
@ -112,9 +131,9 @@ const accountFromToken = (token, req, next) => {
|
|||
next()
|
||||
})
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
const authenticationMiddleware = (req, res, next) => {
|
||||
const authenticationMiddleware = (req, res, next) => {
|
||||
if (req.method === 'OPTIONS') {
|
||||
next()
|
||||
return
|
||||
|
|
@ -133,17 +152,17 @@ const authenticationMiddleware = (req, res, next) => {
|
|||
const token = authorization.replace(/^Bearer /, '')
|
||||
|
||||
accountFromToken(token, req, next)
|
||||
}
|
||||
}
|
||||
|
||||
const errorMiddleware = (err, req, res, next) => {
|
||||
const errorMiddleware = (err, req, res, next) => {
|
||||
log.error(req.requestId, err)
|
||||
res.writeHead(err.statusCode || 500, { 'Content-Type': 'application/json' })
|
||||
res.end(JSON.stringify({ error: err.statusCode ? `${err}` : 'An unexpected error occurred' }))
|
||||
}
|
||||
}
|
||||
|
||||
const placeholders = (arr, shift = 0) => arr.map((_, i) => `$${i + 1 + shift}`).join(', ');
|
||||
const placeholders = (arr, shift = 0) => arr.map((_, i) => `$${i + 1 + shift}`).join(', ');
|
||||
|
||||
const streamFrom = (id, req, output, attachCloseHandler, needsFiltering = false) => {
|
||||
const streamFrom = (id, req, output, attachCloseHandler, needsFiltering = false) => {
|
||||
log.verbose(req.requestId, `Starting stream from ${id} for ${req.accountId}`)
|
||||
|
||||
const listener = message => {
|
||||
|
|
@ -191,10 +210,10 @@ const streamFrom = (id, req, output, attachCloseHandler, needsFiltering = false)
|
|||
|
||||
subscribe(id, listener)
|
||||
attachCloseHandler(id, listener)
|
||||
}
|
||||
}
|
||||
|
||||
// Setup stream output to HTTP
|
||||
const streamToHttp = (req, res) => {
|
||||
// Setup stream output to HTTP
|
||||
const streamToHttp = (req, res) => {
|
||||
res.setHeader('Content-Type', 'text/event-stream')
|
||||
res.setHeader('Transfer-Encoding', 'chunked')
|
||||
|
||||
|
|
@ -209,17 +228,17 @@ const streamToHttp = (req, res) => {
|
|||
res.write(`event: ${event}\n`)
|
||||
res.write(`data: ${payload}\n\n`)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Setup stream end for HTTP
|
||||
const streamHttpEnd = req => (id, listener) => {
|
||||
// Setup stream end for HTTP
|
||||
const streamHttpEnd = req => (id, listener) => {
|
||||
req.on('close', () => {
|
||||
unsubscribe(id, listener)
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// Setup stream output to WebSockets
|
||||
const streamToWs = (req, ws) => {
|
||||
// Setup stream output to WebSockets
|
||||
const streamToWs = (req, ws) => {
|
||||
const heartbeat = setInterval(() => ws.ping(), 15000)
|
||||
|
||||
ws.on('close', () => {
|
||||
|
|
@ -235,10 +254,10 @@ const streamToWs = (req, ws) => {
|
|||
|
||||
ws.send(JSON.stringify({ event, payload }))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Setup stream end for WebSockets
|
||||
const streamWsEnd = ws => (id, listener) => {
|
||||
// Setup stream end for WebSockets
|
||||
const streamWsEnd = ws => (id, listener) => {
|
||||
ws.on('close', () => {
|
||||
unsubscribe(id, listener)
|
||||
})
|
||||
|
|
@ -246,34 +265,34 @@ const streamWsEnd = ws => (id, listener) => {
|
|||
ws.on('error', e => {
|
||||
unsubscribe(id, listener)
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
app.use(setRequestId)
|
||||
app.use(allowCrossDomain)
|
||||
app.use(authenticationMiddleware)
|
||||
app.use(errorMiddleware)
|
||||
app.use(setRequestId)
|
||||
app.use(allowCrossDomain)
|
||||
app.use(authenticationMiddleware)
|
||||
app.use(errorMiddleware)
|
||||
|
||||
app.get('/api/v1/streaming/user', (req, res) => {
|
||||
app.get('/api/v1/streaming/user', (req, res) => {
|
||||
streamFrom(`timeline:${req.accountId}`, req, streamToHttp(req, res), streamHttpEnd(req))
|
||||
})
|
||||
})
|
||||
|
||||
app.get('/api/v1/streaming/public', (req, res) => {
|
||||
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) => {
|
||||
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) => {
|
||||
app.get('/api/v1/streaming/hashtag', (req, res) => {
|
||||
streamFrom(`timeline:hashtag:${req.params.tag}`, req, streamToHttp(req, res), streamHttpEnd(req), true)
|
||||
})
|
||||
})
|
||||
|
||||
app.get('/api/v1/streaming/hashtag/local', (req, res) => {
|
||||
app.get('/api/v1/streaming/hashtag/local', (req, res) => {
|
||||
streamFrom(`timeline:hashtag:${req.params.tag}:local`, req, streamToHttp(req, res), streamHttpEnd(req), true)
|
||||
})
|
||||
})
|
||||
|
||||
wss.on('connection', ws => {
|
||||
wss.on('connection', ws => {
|
||||
const location = url.parse(ws.upgradeReq.url, true)
|
||||
const token = location.query.access_token
|
||||
const req = { requestId: uuid.v4() }
|
||||
|
|
@ -305,9 +324,10 @@ wss.on('connection', ws => {
|
|||
ws.close()
|
||||
}
|
||||
})
|
||||
})
|
||||
})
|
||||
|
||||
server.listen(process.env.PORT || 4000, () => {
|
||||
server.listen(process.env.PORT || 4000, () => {
|
||||
log.level = process.env.LOG_LEVEL || 'verbose'
|
||||
log.info(`Starting streaming API server on port ${server.address().port}`)
|
||||
})
|
||||
log.info(`Starting streaming API server worker on port ${server.address().port}`)
|
||||
})
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue