Script for deploying zip of FastBoot build to S3

deploy.js

#!/usr/bin/env node

var AWS = require('aws-sdk');

var RSVP = require('rsvp');
var exec = RSVP.denodeify(require('child_process').exec);
var fs = require('fs-promise');
var chalk = require('chalk');
var crypto = require('crypto');

var s3 = new AWS.S3({
  params: {
    Bucket: process.env.FASTBOOT_S3_BUCKET
  }
});

performBrowserBuild()
  .then(performFastBootBuild)
  .then(copyBrowserPathsToFastBoot)
  .then(createZip)
  .then(fingerprintZip)
  .then(function(zip) {
    return upload(zip);
  })
  .then(function(data) {
    log("Uploaded to S3");
    log(data.Location);
    log("\n\nDone.");
  })
  .catch(function(e) {
    console.log(chalk.red(e.stack));
  });

function performBrowserBuild() {
  log("Deploying browser build to CloudFront");
  return exec("ember build -prod")
    .then(function() {
      return exec("ember deploy production");
    });
}

function performFastBootBuild() {
  log("Building for FastBoot");
  return exec("ember fastboot:build -prod");
}

function copyBrowserPathsToFastBoot() {
  log("Rewriting FastBoot index.html assets");

  var browserAssetMap = JSON.parse(fs.readFileSync('dist/assets/assetMap.json'));
  var fastBootAssetMap = JSON.parse(fs.readFileSync('fastboot-dist/assets/assetMap.json'));

  var prepend = browserAssetMap.prepend;

  var indexHTML = fs.readFileSync('fastboot-dist/index.html').toString();

  var newAssets = browserAssetMap.assets;
  var oldAssets = fastBootAssetMap.assets;

  for (var key in oldAssets) {
    var value = oldAssets[key];
    indexHTML = indexHTML.replace(prepend + value, prepend + newAssets[key]);
  }

  fs.writeFileSync('fastboot-dist/index.html', indexHTML);
}


function createZip() {
  return exec("zip -r fastboot-dist.zip fastboot-dist");
}

function fingerprintZip() {
  var zipBuf = fs.readFileSync('fastboot-dist.zip');
  var hash = md5Hash(zipBuf);

  var hashedZip = 'fastboot-dist-' + hash + '.zip';

  return fs.rename('fastboot-dist.zip', hashedZip)
    .then(function() {
      log("Created " + hashedZip);
      return hashedZip;
    });
}

function md5Hash(buf) {
  var md5 = crypto.createHash('md5');
  md5.update(buf);
  return md5.digest('hex');
}

function upload(file) {
  return new RSVP.Promise(function(resolve, reject) {
    var params = { Key: 'fastboot/' + file };
    params.Body = fs.createReadStream(file);
    s3.upload(params, function(err, data) {
      if (err) {
        reject(err);
      }

      resolve(data);
    });
  });
}

function log() {
  var args = Array.prototype.map.call(arguments, function(val) {
    return typeof val === 'string' ? chalk.green(val) : val;
  });

  console.log.apply(console, args);
}