overleaf/services/web/app.js

/* eslint-disable
    max-len,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
 * decaffeinate suggestions:
 * DS102: Remove unnecessary code created because of implicit returns
 * DS207: Consider shorter variations of null checks
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
const metrics = require('@overleaf/metrics')
metrics.initialize(process.env.METRICS_APP_NAME || 'web')
const Settings = require('settings-sharelatex')
const logger = require('logger-sharelatex')
logger.initialize(process.env.METRICS_APP_NAME || 'web')
logger.logger.serializers.user = require('./app/src/infrastructure/LoggerSerializers').user
logger.logger.serializers.docs = require('./app/src/infrastructure/LoggerSerializers').docs
logger.logger.serializers.files = require('./app/src/infrastructure/LoggerSerializers').files
logger.logger.serializers.project = require('./app/src/infrastructure/LoggerSerializers').project
if ((Settings.sentry != null ? Settings.sentry.dsn : undefined) != null) {
  logger.initializeErrorReporting(Settings.sentry.dsn)
}

metrics.memory.monitor(logger)

const Server = require('./app/src/infrastructure/Server')
const mongodb = require('./app/src/infrastructure/mongodb')
const mongoose = require('./app/src/infrastructure/Mongoose')

if (Settings.catchErrors) {
  process.removeAllListeners('uncaughtException')
  process.on('uncaughtException', error =>
    logger.error({ err: error }, 'uncaughtException')
  )
}
const port = Settings.port || Settings.internal.web.port || 3000
const host = Settings.internal.web.host || 'localhost'
if (!module.parent) {
  // Called directly

  // We want to make sure that we provided a password through the environment.
  if (!process.env.WEB_API_USER || !process.env.WEB_API_PASSWORD) {
    throw new Error('No API user and password provided')
  }
  Promise.all([mongodb.waitForDb(), mongoose.connectionPromise])
    .then(() => {
      Server.server.listen(port, host, function () {
        logger.info(`web starting up, listening on ${host}:${port}`)
        logger.info(`${require('http').globalAgent.maxSockets} sockets enabled`)
        // wait until the process is ready before monitoring the event loop
        metrics.event_loop.monitor(logger)
      })
    })
    .catch(err => {
      logger.fatal({ err }, 'Cannot connect to mongo. Exiting.')
      process.exit(1)
    })
}

// handle SIGTERM for graceful shutdown in kubernetes
process.on('SIGTERM', function (signal) {
  logger.warn({ signal: signal }, 'received signal, shutting down')
  Settings.shuttingDown = true
})

module.exports = Server.server