index.js

const fs = require('fs')
const path = require('path')
require("dotenv").config()

// LOGGER OPTIONS
let logger = false
if ("SERVER_LOGGER" in process.env) {
  logger = process.env.SERVER_LOGGER === "true" ? { level: 'info' } : { level: process.env.SERVER_LOGGER }
  if ("SERVER_LOGGER_PATH" in process.env) {
    logger.file = process.env.SERVER_LOGGER_PATH
  }
}

const fastify = require("fastify")({ logger: logger })

// EXIT IF POSTGRES_CONNECTION ENV VARIABLE NOT SET
if (!("POSTGRES_CONNECTION" in process.env)) {
  throw new Error("Required ENV variable POSTGRES_CONNECTION is not set. Please see README.md for more information.");
}

// POSTGRES CONNECTION
const postgresConfig = { connectionString: process.env.POSTGRES_CONNECTION }

if (process.env.SSL_ROOT_CERT) {
  postgresConfig.ssl = {
    ca: process.env.SSL_ROOT_CERT
  }
} else if (process.env.SSL_ROOT_CERT_PATH) {
  postgresConfig.ssl = {
    ca: fs.readFileSync(process.env.SSL_ROOT_CERT_PATH).toString()
  }
}

fastify.register(require('@fastify/postgres'), postgresConfig)

// COMPRESSION
// add x-protobuf
fastify.register(
  require('@fastify/compress'),
  { customTypes: /x-protobuf$/ }
)

// CACHE SETTINGS
fastify.register(
  require('@fastify/caching'), {
    privacy: process.env.CACHE_PRIVACY || 'private',
    expiresIn: process.env.CACHE_EXPIRESIN || 3600,
    serverExpiresIn: process.env.CACHE_SERVERCACHE
  }
)

// CORS
fastify.register(require('@fastify/cors'))

// OPTIONAL RATE LIMITER
if ("RATE_MAX" in process.env) {
  fastify.register(import('@fastify/rate-limit'), {
    max: process.env.RATE_MAX,
    timeWindow: '1 minute'
  })
}

// INITIALIZE SWAGGER
fastify.register(require('@fastify/swagger'), {
  exposeRoute: true,
  hideUntagged: true,
  swagger: {
    "basePath": process.env.BASE_PATH || "/",
    "info": {
      "title": "Dirt-Simple PostGIS HTTP API",
      "description": "The Dirt-Simple PostGIS HTTP API is an easy way to expose geospatial functionality to your applications. It takes simple requests over HTTP and returns JSON, JSONP, or protobuf (Mapbox Vector Tile) to the requester. Although the focus of the project has generally been on exposing PostGIS functionality to web apps, you can use the framework to make an API to any database.",
      "version": process.env.npm_package_version || ""
    },
    "externalDocs": {
      "url": "https://github.com/tobinbradley/dirt-simple-postgis-http-api",
      "description": "Source code on Github"
    },
    "tags": [{
      "name": "api",
      "description": "code related end-points"
    }, {
      "name": "feature",
      "description": "features in common formats for direct mapping."
    }, {
      "name": "meta",
      "description": "meta information for tables and views."
    }]
  }
})

// SWAGGER UI
fastify.register(require("@fastify/swagger-ui"), {
  routePrefix: "/"
})

// ADD ROUTES
fastify.register(require('@fastify/autoload'), {
  dir: path.join(__dirname, 'routes')
})

// LAUNCH SERVER
fastify.listen({port: process.env.SERVER_PORT || 3000, host: process.env.SERVER_HOST || '0.0.0.0'}, (err, address) => {
  if (err) {
    console.log(err)
    process.exit(1)
  }
  console.info(`Server listening on ${address}`)
})