Capybara Puma NGINX

capybara.rb

# spec/support/capybara.rb
require "capybara"
require "puma/server"
require "support/nginx"

Capybara.server do |app, port|
  server = Puma::Server.new(app)
  server.min_threads = 1
  server.max_threads = 1
  if ENV["PRECOMPILE"] == "true"
    FileUtils.mkdir_p "tmp/sockets"
    puma_sock = "tmp/sockets/puma.#{Process.pid}.sock"
    server.add_unix_listener(puma_sock)
    threads = server.run
    nginx_server = Support::Nginx.new(
      "#{Capybara.server_host}:#{port}",
      "unix:#{puma_sock}"
    )
    nginx_server.start
    threads.join
  else
    server.add_tcp_listener Capybara.server_host, port
    server.run.join
  end
end

RSpec.configure do |config|
  if ENV["PRECOMPILE"] == "true"
    config.after(:suite) do
      nginx_pid = "tmp/nginx.#{Process.pid}.pid"
      if File.exists? nginx_pid
        pid = File.read(nginx_pid).strip.to_i
        Process.kill "TERM", pid
        File.unlink nginx_pid rescue nil
      end
      nginx_conf = "tmp/nginx.#{Process.pid}.conf"
      if File.exists? nginx_conf
        File.unlink nginx_conf rescue nil
      end
    end
  end
end

mime.types

# spec/support/nginx/mime.types
types {
    text/html                             html htm shtml;
    text/css                              css;
    text/xml                              xml;
    image/gif                             gif;
    image/jpeg                            jpeg jpg;
    application/javascript                js;
    application/atom+xml                  atom;
    application/rss+xml                   rss;

    text/mathml                           mml;
    text/plain                            txt;
    text/vnd.sun.j2me.app-descriptor      jad;
    text/vnd.wap.wml                      wml;
    text/x-component                      htc;

    image/png                             png;
    image/tiff                            tif tiff;
    image/vnd.wap.wbmp                    wbmp;
    image/x-icon                          ico;
    image/x-jng                           jng;
    image/x-ms-bmp                        bmp;
    image/svg+xml                         svg svgz;
    image/webp                            webp;

    application/font-woff                 woff;
    application/java-archive              jar war ear;
    application/json                      json;
    application/mac-binhex40              hqx;
    application/msword                    doc;
    application/pdf                       pdf;
    application/postscript                ps eps ai;
    application/rtf                       rtf;
    application/vnd.apple.mpegurl         m3u8;
    application/vnd.ms-excel              xls;
    application/vnd.ms-fontobject         eot;
    application/vnd.ms-powerpoint         ppt;
    application/vnd.wap.wmlc              wmlc;
    application/vnd.google-earth.kml+xml  kml;
    application/vnd.google-earth.kmz      kmz;
    application/x-7z-compressed           7z;
    application/x-cocoa                   cco;
    application/x-java-archive-diff       jardiff;
    application/x-java-jnlp-file          jnlp;
    application/x-makeself                run;
    application/x-perl                    pl pm;
    application/x-pilot                   prc pdb;
    application/x-rar-compressed          rar;
    application/x-redhat-package-manager  rpm;
    application/x-sea                     sea;
    application/x-shockwave-flash         swf;
    application/x-stuffit                 sit;
    application/x-tcl                     tcl tk;
    application/x-x509-ca-cert            der pem crt;
    application/x-xpinstall               xpi;
    application/xhtml+xml                 xhtml;
    application/xspf+xml                  xspf;
    application/zip                       zip;

    application/octet-stream              bin exe dll;
    application/octet-stream              deb;
    application/octet-stream              dmg;
    application/octet-stream              iso img;
    application/octet-stream              msi msp msm;

    application/vnd.openxmlformats-officedocument.wordprocessingml.document    docx;
    application/vnd.openxmlformats-officedocument.spreadsheetml.sheet          xlsx;
    application/vnd.openxmlformats-officedocument.presentationml.presentation  pptx;

    audio/midi                            mid midi kar;
    audio/mpeg                            mp3;
    audio/ogg                             ogg;
    audio/x-m4a                           m4a;
    audio/x-realaudio                     ra;

    video/3gpp                            3gpp 3gp;
    video/mp2t                            ts;
    video/mp4                             mp4;
    video/mpeg                            mpeg mpg;
    video/quicktime                       mov;
    video/webm                            webm;
    video/x-flv                           flv;
    video/x-m4v                           m4v;
    video/x-mng                           mng;
    video/x-ms-asf                        asx asf;
    video/x-ms-wmv                        wmv;
    video/x-msvideo                       avi;
}

nginx.conf.erb

# spec/support/nginx/nginx.conf.erb
master_process off; # this allows ruby to kill the process after specs finish
pid tmp/nginx.<%= pid %>.pid;

error_log  log/nginx_text_error.<%= pid %>.log;

events {
  worker_connections  1024;
}

http {
  include       <%= mime_types_path %>;
  default_type  application/octet-stream;

  access_log  log/access.<%= pid %>.log;

  sendfile        on;

  #keepalive_timeout  0;
  keepalive_timeout  65;

  upstream app {
    server <%= upstream %> fail_timeout=0;
  }

  server {
    listen <%= listen %> default;
    client_max_body_size 1G;
    keepalive_timeout 5;
    server_tokens off;
    root public;
    try_files $uri/index.html $uri @app;

    location ^~ /assets/ {
      gzip_static on;
      expires max;
      add_header Cache-Control public;
      access_log /dev/null;
    }

    location @app {
      proxy_pass http://app;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $http_host;
      proxy_redirect off;
    }
  }
}

nginx.rb

# spec/support/nginx.rb
require "erb"
require "childprocess"

module Support
  class Nginx
    CONF_TEMPLATE_PATH = File.expand_path("../nginx/nginx.conf.erb", __FILE__)
    MIME_TYPES_PATH = File.expand_path("../nginx/mime.types", __FILE__)
    attr_reader :listen, :upstream

    def initialize(listen, upstream)
      @listen = listen
      @upstream = upstream
    end

    def start
      create_config
      process.start
      at_exit do
        quit
      end
      true
    end

    def quit
      if process.alive?
        process.quit
      end
      if File.exists? conf_path
        File.unlink conf_path
      end
    end

    def pid
      Process.pid
    end

    def conf_path
      "tmp/nginx.#{pid}.conf"
    end

    def create_config
      b = binding
      config = ERB.new(File.read(CONF_TEMPLATE_PATH)).result(b)
      File.write conf_path, config
    end

    def process
      @process ||= ChildProcess.build("nginx", "-p", ".", "-c", conf_path).tap do |process|
        process.io.inherit!
      end
    end

    def mime_types_path
      MIME_TYPES_PATH
    end
  end
end