prettier: convert individual decaffeinated files to Prettier format

services/real-time/app.js

@@ -5,214 +5,249 @@
  * DS207: Consider shorter variations of null checks
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
-const Metrics = require("metrics-sharelatex");
-const Settings = require("settings-sharelatex");
-Metrics.initialize(Settings.appName || "real-time");
-const async = require("async");
-const _ = require("underscore");
-
-const logger = require("logger-sharelatex");
-logger.initialize("real-time");
-Metrics.event_loop.monitor(logger);
-
-const express = require("express");
-const session = require("express-session");
-const redis = require("redis-sharelatex");
+const Metrics = require('metrics-sharelatex')
+const Settings = require('settings-sharelatex')
+Metrics.initialize(Settings.appName || 'real-time')
+const async = require('async')
+const _ = require('underscore')
+
+const logger = require('logger-sharelatex')
+logger.initialize('real-time')
+Metrics.event_loop.monitor(logger)
+
+const express = require('express')
+const session = require('express-session')
+const redis = require('redis-sharelatex')
 if ((Settings.sentry != null ? Settings.sentry.dsn : undefined) != null) {
-	logger.initializeErrorReporting(Settings.sentry.dsn);
+  logger.initializeErrorReporting(Settings.sentry.dsn)
 }
 
-const sessionRedisClient = redis.createClient(Settings.redis.websessions);
+const sessionRedisClient = redis.createClient(Settings.redis.websessions)
 
-const RedisStore = require('connect-redis')(session);
-const SessionSockets = require('./app/js/SessionSockets');
-const CookieParser = require("cookie-parser");
+const RedisStore = require('connect-redis')(session)
+const SessionSockets = require('./app/js/SessionSockets')
+const CookieParser = require('cookie-parser')
 
-const DrainManager = require("./app/js/DrainManager");
-const HealthCheckManager = require("./app/js/HealthCheckManager");
+const DrainManager = require('./app/js/DrainManager')
+const HealthCheckManager = require('./app/js/HealthCheckManager')
 
 // work around frame handler bug in socket.io v0.9.16
-require("./socket.io.patch.js"); 
+require('./socket.io.patch.js')
 // Set up socket.io server
-const app = express();
+const app = express()
 
-const server = require('http').createServer(app);
-const io = require('socket.io').listen(server);
+const server = require('http').createServer(app)
+const io = require('socket.io').listen(server)
 
 // Bind to sessions
-const sessionStore = new RedisStore({client: sessionRedisClient});
-const cookieParser = CookieParser(Settings.security.sessionSecret);
-
-const sessionSockets = new SessionSockets(io, sessionStore, cookieParser, Settings.cookieName);
-
-Metrics.injectMetricsRoute(app);
-app.use(Metrics.http.monitor(logger));
-
-io.configure(function() {
-	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']);
-	return io.set('log level', 1);
-});
-
-app.get("/", (req, res, next) => res.send("real-time-sharelatex is alive"));
-
-app.get("/status", function(req, res, next) {
-	if (Settings.shutDownInProgress) {
-		return res.send(503); // Service unavailable
-	} else {
-		return res.send("real-time-sharelatex is alive");
-	}
-});
-
-app.get("/debug/events", function(req, res, next) {
-	Settings.debugEvents = parseInt(req.query != null ? req.query.count : undefined,10) || 20;
-	logger.log({count: Settings.debugEvents}, "starting debug mode");
-	return res.send(`debug mode will log next ${Settings.debugEvents} events`);
-});
-
-const rclient = require("redis-sharelatex").createClient(Settings.redis.realtime);
-
-const healthCheck = (req, res, next) => rclient.healthCheck(function(error) {
+const sessionStore = new RedisStore({ client: sessionRedisClient })
+const cookieParser = CookieParser(Settings.security.sessionSecret)
+
+const sessionSockets = new SessionSockets(
+  io,
+  sessionStore,
+  cookieParser,
+  Settings.cookieName
+)
+
+Metrics.injectMetricsRoute(app)
+app.use(Metrics.http.monitor(logger))
+
+io.configure(function () {
+  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'
+  ])
+  return io.set('log level', 1)
+})
+
+app.get('/', (req, res, next) => res.send('real-time-sharelatex is alive'))
+
+app.get('/status', function (req, res, next) {
+  if (Settings.shutDownInProgress) {
+    return res.send(503) // Service unavailable
+  } else {
+    return res.send('real-time-sharelatex is alive')
+  }
+})
+
+app.get('/debug/events', function (req, res, next) {
+  Settings.debugEvents =
+    parseInt(req.query != null ? req.query.count : undefined, 10) || 20
+  logger.log({ count: Settings.debugEvents }, 'starting debug mode')
+  return res.send(`debug mode will log next ${Settings.debugEvents} events`)
+})
+
+const rclient = require('redis-sharelatex').createClient(
+  Settings.redis.realtime
+)
+
+const healthCheck = (req, res, next) =>
+  rclient.healthCheck(function (error) {
     if (error != null) {
-        logger.err({err: error}, "failed redis health check");
-        return res.sendStatus(500);
+      logger.err({ err: error }, 'failed redis health check')
+      return res.sendStatus(500)
     } else if (HealthCheckManager.isFailing()) {
-        const status = HealthCheckManager.status();
-        logger.err({pubSubErrors: status}, "failed pubsub health check");
-        return res.sendStatus(500);
+      const status = HealthCheckManager.status()
+      logger.err({ pubSubErrors: status }, 'failed pubsub health check')
+      return res.sendStatus(500)
     } else {
-        return res.sendStatus(200);
+      return res.sendStatus(200)
     }
-});
+  })
 
-app.get("/health_check", healthCheck);
+app.get('/health_check', healthCheck)
 
-app.get("/health_check/redis", healthCheck);
+app.get('/health_check/redis', healthCheck)
 
+const Router = require('./app/js/Router')
+Router.configure(app, io, sessionSockets)
 
+const WebsocketLoadBalancer = require('./app/js/WebsocketLoadBalancer')
+WebsocketLoadBalancer.listenForEditorEvents(io)
 
-const Router = require("./app/js/Router");
-Router.configure(app, io, sessionSockets);
+const DocumentUpdaterController = require('./app/js/DocumentUpdaterController')
+DocumentUpdaterController.listenForUpdatesFromDocumentUpdater(io)
 
-const WebsocketLoadBalancer = require("./app/js/WebsocketLoadBalancer");
-WebsocketLoadBalancer.listenForEditorEvents(io);
+const { port } = Settings.internal.realTime
+const { host } = Settings.internal.realTime
 
-const DocumentUpdaterController = require("./app/js/DocumentUpdaterController");
-DocumentUpdaterController.listenForUpdatesFromDocumentUpdater(io);
+server.listen(port, host, function (error) {
+  if (error != null) {
+    throw error
+  }
+  return logger.info(`realtime starting up, listening on ${host}:${port}`)
+})
 
-const {
-    port
-} = Settings.internal.realTime;
-const {
-    host
-} = Settings.internal.realTime;
+// Stop huge stack traces in logs from all the socket.io parsing steps.
+Error.stackTraceLimit = 10
+
+var shutdownCleanly = function (signal) {
+  const connectedClients = __guard__(io.sockets.clients(), (x) => x.length)
+  if (connectedClients === 0) {
+    logger.warn('no clients connected, exiting')
+    return process.exit()
+  } else {
+    logger.warn(
+      { connectedClients },
+      'clients still connected, not shutting down yet'
+    )
+    return setTimeout(() => shutdownCleanly(signal), 30 * 1000)
+  }
+}
 
-server.listen(port, host, function(error) {
-	if (error != null) { throw error; }
-	return logger.info(`realtime starting up, listening on ${host}:${port}`);
-});
+const drainAndShutdown = function (signal) {
+  if (Settings.shutDownInProgress) {
+    logger.warn({ signal }, 'shutdown already in progress, ignoring signal')
+  } else {
+    Settings.shutDownInProgress = true
+    const { statusCheckInterval } = Settings
+    if (statusCheckInterval) {
+      logger.warn(
+        { signal },
+        `received interrupt, delay drain by ${statusCheckInterval}ms`
+      )
+    }
+    return setTimeout(function () {
+      logger.warn(
+        { signal },
+        `received interrupt, starting drain over ${shutdownDrainTimeWindow} mins`
+      )
+      DrainManager.startDrainTimeWindow(io, shutdownDrainTimeWindow)
+      return shutdownCleanly(signal)
+    }, statusCheckInterval)
+  }
+}
 
-// Stop huge stack traces in logs from all the socket.io parsing steps.
-Error.stackTraceLimit = 10;
-
-
-var shutdownCleanly = function(signal) {
-	const connectedClients = __guard__(io.sockets.clients(), x => x.length);
-	if (connectedClients === 0) {
-		logger.warn("no clients connected, exiting");
-		return process.exit();
-	} else {
-		logger.warn({connectedClients}, "clients still connected, not shutting down yet");
-		return setTimeout(() => shutdownCleanly(signal)
-		, 30 * 1000);
-	}
-};
-
-const drainAndShutdown = function(signal) {
-	if (Settings.shutDownInProgress) {
-		logger.warn({signal}, "shutdown already in progress, ignoring signal");
-		return;
-	} else {
-		Settings.shutDownInProgress = true;
-		const {
-            statusCheckInterval
-        } = Settings;
-		if (statusCheckInterval) {
-			logger.warn({signal}, `received interrupt, delay drain by ${statusCheckInterval}ms`);
-		}
-		return setTimeout(function() {
-			logger.warn({signal}, `received interrupt, starting drain over ${shutdownDrainTimeWindow} mins`);
-			DrainManager.startDrainTimeWindow(io, shutdownDrainTimeWindow);
-			return shutdownCleanly(signal);
-		}
-		, statusCheckInterval);
-	}
-};
-
-
-Settings.shutDownInProgress = false;
+Settings.shutDownInProgress = false
 if (Settings.shutdownDrainTimeWindow != null) {
-	var shutdownDrainTimeWindow = parseInt(Settings.shutdownDrainTimeWindow, 10);
-	logger.log({shutdownDrainTimeWindow},"shutdownDrainTimeWindow enabled");
-	for (let signal of ['SIGINT', 'SIGHUP', 'SIGQUIT', 'SIGUSR1', 'SIGUSR2', 'SIGTERM', 'SIGABRT']) {
-		process.on(signal, drainAndShutdown);
-	}  // signal is passed as argument to event handler
-
-	// global exception handler
-	if (Settings.errors != null ? Settings.errors.catchUncaughtErrors : undefined) {
-		process.removeAllListeners('uncaughtException');
-		process.on('uncaughtException', function(error) {
-			if (['EPIPE', 'ECONNRESET'].includes(error.code)) {
-				Metrics.inc('disconnected_write', 1, {status: error.code});
-				return logger.warn({err: error}, 'attempted to write to disconnected client');
-			}
-			logger.error({err: error}, 'uncaught exception');
-			if (Settings.errors != null ? Settings.errors.shutdownOnUncaughtError : undefined) {
-				return drainAndShutdown('SIGABRT');
-			}
-		});
-	}
+  var shutdownDrainTimeWindow = parseInt(Settings.shutdownDrainTimeWindow, 10)
+  logger.log({ shutdownDrainTimeWindow }, 'shutdownDrainTimeWindow enabled')
+  for (const signal of [
+    'SIGINT',
+    'SIGHUP',
+    'SIGQUIT',
+    'SIGUSR1',
+    'SIGUSR2',
+    'SIGTERM',
+    'SIGABRT'
+  ]) {
+    process.on(signal, drainAndShutdown)
+  } // signal is passed as argument to event handler
+
+  // global exception handler
+  if (
+    Settings.errors != null ? Settings.errors.catchUncaughtErrors : undefined
+  ) {
+    process.removeAllListeners('uncaughtException')
+    process.on('uncaughtException', function (error) {
+      if (['EPIPE', 'ECONNRESET'].includes(error.code)) {
+        Metrics.inc('disconnected_write', 1, { status: error.code })
+        return logger.warn(
+          { err: error },
+          'attempted to write to disconnected client'
+        )
+      }
+      logger.error({ err: error }, 'uncaught exception')
+      if (
+        Settings.errors != null
+          ? Settings.errors.shutdownOnUncaughtError
+          : undefined
+      ) {
+        return drainAndShutdown('SIGABRT')
+      }
+    })
+  }
 }
 
 if (Settings.continualPubsubTraffic) {
-	console.log("continualPubsubTraffic enabled");
-
-	const pubsubClient = redis.createClient(Settings.redis.pubsub);
-	const clusterClient = redis.createClient(Settings.redis.websessions);
-
-	const publishJob = function(channel, callback){
-		const checker = new HealthCheckManager(channel);
-		logger.debug({channel}, "sending pub to keep connection alive");
-		const json = JSON.stringify({health_check:true, key: checker.id, date: new Date().toString()});
-		Metrics.summary(`redis.publish.${channel}`, json.length);
-		return pubsubClient.publish(channel, json, function(err){
-			if (err != null) {
-				logger.err({err, channel}, "error publishing pubsub traffic to redis");
-			}
-			const blob = JSON.stringify({keep: "alive"});
-			Metrics.summary("redis.publish.cluster-continual-traffic", blob.length);
-			return clusterClient.publish("cluster-continual-traffic", blob, callback);
-		});
-	};
-
-
-	var runPubSubTraffic = () => async.map(["applied-ops", "editor-events"], publishJob, err => setTimeout(runPubSubTraffic, 1000 * 20));
-
-	runPubSubTraffic();
+  console.log('continualPubsubTraffic enabled')
+
+  const pubsubClient = redis.createClient(Settings.redis.pubsub)
+  const clusterClient = redis.createClient(Settings.redis.websessions)
+
+  const publishJob = function (channel, callback) {
+    const checker = new HealthCheckManager(channel)
+    logger.debug({ channel }, 'sending pub to keep connection alive')
+    const json = JSON.stringify({
+      health_check: true,
+      key: checker.id,
+      date: new Date().toString()
+    })
+    Metrics.summary(`redis.publish.${channel}`, json.length)
+    return pubsubClient.publish(channel, json, function (err) {
+      if (err != null) {
+        logger.err({ err, channel }, 'error publishing pubsub traffic to redis')
+      }
+      const blob = JSON.stringify({ keep: 'alive' })
+      Metrics.summary('redis.publish.cluster-continual-traffic', blob.length)
+      return clusterClient.publish('cluster-continual-traffic', blob, callback)
+    })
+  }
+
+  var runPubSubTraffic = () =>
+    async.map(['applied-ops', 'editor-events'], publishJob, (err) =>
+      setTimeout(runPubSubTraffic, 1000 * 20)
+    )
+
+  runPubSubTraffic()
 }
 
-
-
-
 function __guard__(value, transform) {
-  return (typeof value !== 'undefined' && value !== null) ? transform(value) : undefined;
-}
+  return typeof value !== 'undefined' && value !== null
+    ? transform(value)
+    : undefined
+}

services/real-time/config/settings.defaults.js

@@ -1,95 +1,141 @@
 const settings = {
-	redis: {
-
-		pubsub: {
-			host: process.env['PUBSUB_REDIS_HOST'] || process.env['REDIS_HOST'] || "localhost",
-			port: process.env['PUBSUB_REDIS_PORT'] || process.env['REDIS_PORT'] || "6379",
-			password: process.env["PUBSUB_REDIS_PASSWORD"] || process.env["REDIS_PASSWORD"] || "",
-			maxRetriesPerRequest: parseInt(process.env["PUBSUB_REDIS_MAX_RETRIES_PER_REQUEST"] || process.env["REDIS_MAX_RETRIES_PER_REQUEST"] || "20")
-		},
-
-		realtime: {
-			host: process.env['REAL_TIME_REDIS_HOST'] || process.env['REDIS_HOST'] || "localhost",
-			port: process.env['REAL_TIME_REDIS_PORT'] || process.env['REDIS_PORT'] || "6379",
-			password: process.env["REAL_TIME_REDIS_PASSWORD"] || process.env["REDIS_PASSWORD"] || "",
-			key_schema: {
-				clientsInProject({project_id}) { return `clients_in_project:{${project_id}}`; },
-				connectedUser({project_id, client_id}){ return `connected_user:{${project_id}}:${client_id}`; }
-			},
-			maxRetriesPerRequest: parseInt(process.env["REAL_TIME_REDIS_MAX_RETRIES_PER_REQUEST"] || process.env["REDIS_MAX_RETRIES_PER_REQUEST"] || "20")
-		},
-
-		documentupdater: {
-			host: process.env['DOC_UPDATER_REDIS_HOST'] || process.env['REDIS_HOST'] || "localhost",
-			port: process.env['DOC_UPDATER_REDIS_PORT'] || process.env['REDIS_PORT'] || "6379",
-			password: process.env["DOC_UPDATER_REDIS_PASSWORD"] || process.env["REDIS_PASSWORD"] || "",
-			key_schema: {
-				pendingUpdates({doc_id}) { return `PendingUpdates:{${doc_id}}`; }
-			},
-			maxRetriesPerRequest: parseInt(process.env["DOC_UPDATER_REDIS_MAX_RETRIES_PER_REQUEST"] || process.env["REDIS_MAX_RETRIES_PER_REQUEST"] || "20")
-		},
-
-		websessions: { 			
-			host: process.env['WEB_REDIS_HOST'] || process.env['REDIS_HOST'] || "localhost",
-			port: process.env['WEB_REDIS_PORT'] || process.env['REDIS_PORT'] || "6379",
-			password: process.env["WEB_REDIS_PASSWORD"] || process.env["REDIS_PASSWORD"] || "",
-			maxRetriesPerRequest: parseInt(process.env["WEB_REDIS_MAX_RETRIES_PER_REQUEST"] || process.env["REDIS_MAX_RETRIES_PER_REQUEST"] || "20")
-		}
-	},
-
-	internal: {
-		realTime: {
-			port: 3026,
-			host: process.env['LISTEN_ADDRESS'] || "localhost",
-			user: "sharelatex",
-			pass: "password"
-		}
-	},
-			
-	apis: {
-		web: {
-			url: `http://${process.env['WEB_API_HOST'] || process.env['WEB_HOST'] || "localhost"}:${process.env['WEB_API_PORT'] || process.env['WEB_PORT'] || 3000}`,
-			user: process.env['WEB_API_USER'] || "sharelatex",
-			pass: process.env['WEB_API_PASSWORD'] || "password"
-		},
-		documentupdater: {
-			url: `http://${process.env['DOCUMENT_UPDATER_HOST'] || process.env['DOCUPDATER_HOST'] || "localhost"}:3003`
-		}
-	},
-			
-	security: {
-		sessionSecret: process.env['SESSION_SECRET'] || "secret-please-change"
-	},
-		
-	cookieName: process.env['COOKIE_NAME'] || "sharelatex.sid",
-	
-	max_doc_length: 2 * 1024 * 1024, // 2mb
-
-	// combine
-	// max_doc_length (2mb see above) * 2 (delete + insert)
-	// max_ranges_size (3mb see MAX_RANGES_SIZE in document-updater)
-	// overhead for JSON serialization
-	maxUpdateSize: parseInt(process.env['MAX_UPDATE_SIZE']) || ((7 * 1024 * 1024) + (64 * 1024)),
-
-	shutdownDrainTimeWindow: process.env['SHUTDOWN_DRAIN_TIME_WINDOW'] || 9,
-
-	continualPubsubTraffic: process.env['CONTINUAL_PUBSUB_TRAFFIC'] || false,
-
-	checkEventOrder: process.env['CHECK_EVENT_ORDER'] || false,
-	
-	publishOnIndividualChannels: process.env['PUBLISH_ON_INDIVIDUAL_CHANNELS'] || false,
-
-	statusCheckInterval: parseInt(process.env['STATUS_CHECK_INTERVAL'] || '0'),
-
-	sentry: {
-		dsn: process.env.SENTRY_DSN
-	},
-
-	errors: {
-		catchUncaughtErrors: true,
-		shutdownOnUncaughtError: true
-	}
-};
-	
+  redis: {
+    pubsub: {
+      host:
+        process.env.PUBSUB_REDIS_HOST || process.env.REDIS_HOST || 'localhost',
+      port: process.env.PUBSUB_REDIS_PORT || process.env.REDIS_PORT || '6379',
+      password:
+        process.env.PUBSUB_REDIS_PASSWORD || process.env.REDIS_PASSWORD || '',
+      maxRetriesPerRequest: parseInt(
+        process.env.PUBSUB_REDIS_MAX_RETRIES_PER_REQUEST ||
+          process.env.REDIS_MAX_RETRIES_PER_REQUEST ||
+          '20'
+      )
+    },
+
+    realtime: {
+      host:
+        process.env.REAL_TIME_REDIS_HOST ||
+        process.env.REDIS_HOST ||
+        'localhost',
+      port:
+        process.env.REAL_TIME_REDIS_PORT || process.env.REDIS_PORT || '6379',
+      password:
+        process.env.REAL_TIME_REDIS_PASSWORD ||
+        process.env.REDIS_PASSWORD ||
+        '',
+      key_schema: {
+        clientsInProject({ project_id }) {
+          return `clients_in_project:{${project_id}}`
+        },
+        connectedUser({ project_id, client_id }) {
+          return `connected_user:{${project_id}}:${client_id}`
+        }
+      },
+      maxRetriesPerRequest: parseInt(
+        process.env.REAL_TIME_REDIS_MAX_RETRIES_PER_REQUEST ||
+          process.env.REDIS_MAX_RETRIES_PER_REQUEST ||
+          '20'
+      )
+    },
+
+    documentupdater: {
+      host:
+        process.env.DOC_UPDATER_REDIS_HOST ||
+        process.env.REDIS_HOST ||
+        'localhost',
+      port:
+        process.env.DOC_UPDATER_REDIS_PORT || process.env.REDIS_PORT || '6379',
+      password:
+        process.env.DOC_UPDATER_REDIS_PASSWORD ||
+        process.env.REDIS_PASSWORD ||
+        '',
+      key_schema: {
+        pendingUpdates({ doc_id }) {
+          return `PendingUpdates:{${doc_id}}`
+        }
+      },
+      maxRetriesPerRequest: parseInt(
+        process.env.DOC_UPDATER_REDIS_MAX_RETRIES_PER_REQUEST ||
+          process.env.REDIS_MAX_RETRIES_PER_REQUEST ||
+          '20'
+      )
+    },
+
+    websessions: {
+      host: process.env.WEB_REDIS_HOST || process.env.REDIS_HOST || 'localhost',
+      port: process.env.WEB_REDIS_PORT || process.env.REDIS_PORT || '6379',
+      password:
+        process.env.WEB_REDIS_PASSWORD || process.env.REDIS_PASSWORD || '',
+      maxRetriesPerRequest: parseInt(
+        process.env.WEB_REDIS_MAX_RETRIES_PER_REQUEST ||
+          process.env.REDIS_MAX_RETRIES_PER_REQUEST ||
+          '20'
+      )
+    }
+  },
+
+  internal: {
+    realTime: {
+      port: 3026,
+      host: process.env.LISTEN_ADDRESS || 'localhost',
+      user: 'sharelatex',
+      pass: 'password'
+    }
+  },
+
+  apis: {
+    web: {
+      url: `http://${
+        process.env.WEB_API_HOST || process.env.WEB_HOST || 'localhost'
+      }:${process.env.WEB_API_PORT || process.env.WEB_PORT || 3000}`,
+      user: process.env.WEB_API_USER || 'sharelatex',
+      pass: process.env.WEB_API_PASSWORD || 'password'
+    },
+    documentupdater: {
+      url: `http://${
+        process.env.DOCUMENT_UPDATER_HOST ||
+        process.env.DOCUPDATER_HOST ||
+        'localhost'
+      }:3003`
+    }
+  },
+
+  security: {
+    sessionSecret: process.env.SESSION_SECRET || 'secret-please-change'
+  },
+
+  cookieName: process.env.COOKIE_NAME || 'sharelatex.sid',
+
+  max_doc_length: 2 * 1024 * 1024, // 2mb
+
+  // combine
+  // max_doc_length (2mb see above) * 2 (delete + insert)
+  // max_ranges_size (3mb see MAX_RANGES_SIZE in document-updater)
+  // overhead for JSON serialization
+  maxUpdateSize:
+    parseInt(process.env.MAX_UPDATE_SIZE) || 7 * 1024 * 1024 + 64 * 1024,
+
+  shutdownDrainTimeWindow: process.env.SHUTDOWN_DRAIN_TIME_WINDOW || 9,
+
+  continualPubsubTraffic: process.env.CONTINUAL_PUBSUB_TRAFFIC || false,
+
+  checkEventOrder: process.env.CHECK_EVENT_ORDER || false,
+
+  publishOnIndividualChannels:
+    process.env.PUBLISH_ON_INDIVIDUAL_CHANNELS || false,
+
+  statusCheckInterval: parseInt(process.env.STATUS_CHECK_INTERVAL || '0'),
+
+  sentry: {
+    dsn: process.env.SENTRY_DSN
+  },
+
+  errors: {
+    catchUncaughtErrors: true,
+    shutdownOnUncaughtError: true
+  }
+}
+
 // console.log settings.redis
-module.exports = settings;
+module.exports = settings