server.js

import SwaggerExpress from 'swagger-express-mw'
import SwaggerUi from 'swagger-tools/middleware/swagger-ui'
import volosCache from 'volos-cache-memory'
import compression from 'compression'
import express from 'express'
import deepcopy from 'deepcopy'
import * as auth from './api/helpers/auth'
const VOLOS_RESOURCE = 'x-volos-resources'
import requestIp from 'request-ip'
import * as logger from './api/helpers/logger'

const config = {
  appRoot: __dirname,
  port: process.env.PORT || 8000,
  swaggerSecurityHandlers: {Bearer: auth.verifyToken}
}
console.log(process.version);
const app = express()

app.use(compression())
app.use(requestIp.mw())
app.use(logger.logRequest)


SwaggerExpress.create(config, (err, swaggerExpress) => {
  if (err) {
    throw err
  }

  let cacheOptions = swaggerExpress.runner.swagger[VOLOS_RESOURCE].cache.options
  let cacheName = swaggerExpress.runner.swagger[VOLOS_RESOURCE].cache.name
  let cache = volosCache.create(cacheName, cacheOptions)
  cacheOptions.key = getCacheKey

  // eliminate path that has x-hide property
  let swaggerObject = deepcopy(swaggerExpress.runner.swagger)
  let new_paths = Object.keys(swaggerObject.paths).reduce((obj, path) => {
    if (!swaggerObject.paths[path]['x-hide']) {
      obj[path] = swaggerObject.paths[path]
    }
    return obj
  }, {})

  swaggerObject.paths = new_paths

  app.use(SwaggerUi(swaggerObject))

  // Serve the Swagger documents and Swagger UI
  // app.use(swaggerExpress.runner.swaggerTools.swaggerUi());
  // install middleware
  app.use(swaggerExpress.runner.swaggerTools.swaggerMetadata())
  app.use(swaggerExpress.runner.swaggerTools.swaggerSecurity(config.swaggerSecurityHandlers))

  app.use(cache.expressMiddleware().cache({key: getCacheKey}))
  // Provide the security handlers

  swaggerExpress.register(app)

  app.listen(config.port, () => {
    console.log(`Open maps API is up on http://localhost:${config.port}`)
  })
})

/**
 * Extracts and returns data from shapefiles
 * @param  {object} req request object
 * @return {sting} cacheKey
 */
const getCacheKey = (req) => {
  let cacheKey = null
  let url = req.originalUrl

  if (url.indexOf('/api/v1/') !== -1) {
    if (url.substring(url.length - 1) === '/') {
      url = url.substring(0, url.length - 1)
    }
    let urlParts = url.split('/')
    cacheKey = urlParts[3]

    urlParts.slice(4, urlParts.length).forEach(part => {
      cacheKey += '_' + part
    })
  }

  return cacheKey
}


export default app