overleaf/services/real-time/app.coffee
2016-11-09 12:09:15 +00:00

78 lines
2.6 KiB
CoffeeScript

logger = require "logger-sharelatex"
logger.initialize("real-time-sharelatex")
express = require("express")
session = require("express-session")
redis = require("redis-sharelatex")
ioredis = require('ioredis')
Settings = require "settings-sharelatex"
redisSessionsSettings = Settings.redis.websessions or Settings.redis.web
if redisSessionsSettings?.cluster?
logger.log {}, "using redis cluster for web sessions"
sessionRedisClient = new ioredis.Cluster(redisSessionsSettings.cluster)
else
sessionRedisClient = redis.createClient(redisSessionsSettings)
RedisStore = require('connect-redis')(session)
SessionSockets = require('session.socket.io')
CookieParser = require("cookie-parser")
Metrics = require("metrics-sharelatex")
Metrics.initialize(Settings.appName or "real-time")
Metrics.event_loop.monitor(logger)
# Set up socket.io server
app = express()
server = require('http').createServer(app)
io = require('socket.io').listen(server)
# Bind to sessions
sessionStore = new RedisStore(client: sessionRedisClient)
cookieParser = CookieParser(Settings.security.sessionSecret)
sessionSockets = new SessionSockets(io, sessionStore, cookieParser, Settings.cookieName)
io.configure ->
io.enable('browser client minification')
io.enable('browser client etag')
# Fix for Safari 5 error of "Error during WebSocket handshake: location mismatch"
# See http://answers.dotcloud.com/question/578/problem-with-websocket-over-ssl-in-safari-with
io.set('match origin protocol', true)
# gzip uses a Node 0.8.x method of calling the gzip program which
# doesn't work with 0.6.x
#io.enable('browser client gzip')
io.set('transports', ['websocket', 'flashsocket', 'htmlfile', 'xhr-polling', 'jsonp-polling'])
io.set('log level', 1)
app.get "/status", (req, res, next) ->
res.send "real-time-sharelatex is alive"
redisCheck = redis.activeHealthCheckRedis(Settings.redis.web)
app.get "/health_check/redis", (req, res, next) ->
if redisCheck.isAlive()
res.send 200
else
res.send 500
Router = require "./app/js/Router"
Router.configure(app, io, sessionSockets)
WebsocketLoadBalancer = require "./app/js/WebsocketLoadBalancer"
WebsocketLoadBalancer.listenForEditorEvents(io)
DocumentUpdaterController = require "./app/js/DocumentUpdaterController"
DocumentUpdaterController.listenForUpdatesFromDocumentUpdater(io)
port = Settings.internal.realTime.port
host = Settings.internal.realTime.host
server.listen port, host, (error) ->
throw error if error?
logger.info "realtime starting up, listening on #{host}:#{port}"
# Stop huge stack traces in logs from all the socket.io parsing steps.
Error.stackTraceLimit = 10