Part 3 - Prepping for Heroku

Gemfile

@@ -12,4 +12,9 @@ gem 'therubyracer' # faster JS compiles
 gem 'oj' # faster JS compiles
 
 gem 'middleman-search_engine_sitemap'
-gem 'middleman-minify-html'
+gem 'middleman-minify-html'
+
+gem 'puma'
+gem 'rack-contrib'
+gem 'rack-ssl'
+gem 'rack-cache'

Gemfile.lock

@@ -93,7 +93,15 @@ GEM
       tilt (~> 1.4.1)
     padrino-support (0.12.5)
       activesupport (>= 3.1)
+    puma (2.11.1)
+      rack (>= 1.1, < 2.0)
     rack (1.6.0)
+    rack-cache (1.2)
+      rack (>= 0.4)
+    rack-contrib (1.2.0)
+      rack (>= 0.9.1)
+    rack-ssl (1.4.1)
+      rack
     rack-test (0.6.3)
       rack (>= 1.0)
     rb-fsevent (0.9.4)
@@ -136,4 +144,8 @@ DEPENDENCIES
   middleman-minify-html
   middleman-search_engine_sitemap
   oj
+  puma
+  rack-cache
+  rack-contrib
+  rack-ssl
   therubyracer

Procfile

@@ -0,0 +1 @@
+web: bundle exec puma -p $PORT

Rakefile

@@ -0,0 +1,7 @@
+require 'bundler/setup'
+
+namespace :assets do
+  task :precompile do
+    sh 'middleman build'
+  end
+end

config.ru

@@ -0,0 +1,30 @@
+#\ -s puma
+require 'rack'
+require 'rack/contrib/try_static'
+require 'rack/deflater'
+require 'rack/cache'
+
+# Forces SSL on all requests
+unless ENV['RACK_ENV'] == 'development'
+  require 'rack/ssl'
+  use Rack::SSL
+end
+
+use Rack::Cache,
+    :verbose     => true,
+    :metastore   => 'file:/var/cache/rack/meta',
+    :entitystore => 'file:/var/cache/rack/body'
+
+# Enables compression of http responses, used in conjunction with `activate :gzip` in config.rb
+use Rack::Deflater
+
+# Serve files from the build directory
+use Rack::TryStatic,
+    root: 'build',
+    urls: %w[/],
+    try: %w(.html index.html /index.html)
+
+run lambda { |env|
+      four_oh_four_page = File.expand_path("../build/404/index.html", __FILE__)
+      [404, { 'Content-Type'  => 'text/html'}, [ File.read(four_oh_four_page) ]]
+    }