app.js

const uptrace = require('@uptrace/node')

// Run this before any other imports for auto-instrumentation to work.
const upclient = uptrace.createClient({
  plugins: {
    mongoose: {
      enabled: true,
      path: '@wdalmut/opentelemetry-plugin-mongoose',
    },
  },
})

var http = require('http'),
  path = require('path'),
  methods = require('methods'),
  express = require('express'),
  bodyParser = require('body-parser'),
  session = require('express-session'),
  cors = require('cors'),
  passport = require('passport'),
  errorhandler = require('errorhandler'),
  mongoose = require('mongoose')

var isProduction = process.env.NODE_ENV === 'production'

// Create global app object
var app = express()

app.use(cors())

// Normal express config defaults
app.use(require('morgan')('dev'))
app.use(bodyParser.urlencoded({ extended: false }))
app.use(bodyParser.json())

app.use(require('method-override')())
app.use(express.static(__dirname + '/public'))

app.use(
  session({
    secret: 'conduit',
    cookie: { maxAge: 60000 },
    resave: false,
    saveUninitialized: false,
  })
)

if (!isProduction) {
  app.use(errorhandler())
}

if (isProduction) {
  mongoose.connect(process.env.MONGODB_URI, {
    useNewUrlParser: true,
    useUnifiedTopology: true,
  })
} else {
  mongoose.connect('mongodb://localhost/conduit', {
    useNewUrlParser: true,
    useUnifiedTopology: true,
  })
  mongoose.set('debug', true)
}

require('./models/User')
require('./models/Article')
require('./models/Comment')
require('./config/passport')

app.use(require('./routes'))

/// catch 404 and forward to error handler
app.use(function (req, res, next) {
  var err = new Error('Not Found')
  err.status = 404
  next(err)
})

/// error handlers

// development error handler
// will print stacktrace
if (!isProduction) {
  app.use(function (err, req, res, next) {
    console.log(err.stack)

    res.status(err.status || 500)

    res.json({
      errors: {
        message: err.message,
        error: err,
      },
    })
  })
}

// production error handler
// no stacktraces leaked to user
app.use(function (err, req, res, next) {
  res.status(err.status || 500)
  res.json({
    errors: {
      message: err.message,
      error: {},
    },
  })
})

// finally, let's start our server...
var server = app.listen(process.env.PORT || 3000, function () {
  console.log('Listening on port ' + server.address().port)
})