rails + unicorn + nginx の立ちあげちょっと簡単にするやつ

nginx-conf.rb

#!/usr/bin/env ruby

require 'thor'

class NginxConf < Thor
  desc 'register PORT', 'install new config file'
  option :prefix, type: :string, default: "/usr/local"
  def register(port)
    root = Dir::pwd
    project = root.split(/\//).last
    server = "#{project}.local"

    file = <<-EOT
upstream #{project}-app {
  server unix:#{root}/tmp/sockets/unicorn.sock fail_timeout=0;
}

server {
  listen #{port};
  client_max_body_size 2G;
  server_name #{server};
  keepalive_timeout 5;
  root #{root}/public;
  access_log  off;
  error_log off;

  if ($request_method !~ ^(GET|HEAD|PUT|POST|DELETE|OPTIONS)$ ){
    return 405;
  }

  location / {
    try_files $uri/index.html $uri.html $uri @#{project}-app;
    error_page 404              /404.html;
    error_page 422              /422.html;
    error_page 500 502 503 504  /500.html;
    error_page 403              /403.html;
  }

  location @#{project}-app {
    proxy_pass http://#{project}-app;
  }

  location = /favicon.ico {
    expires    max;
    add_header Cache-Control public;
  }

}
    EOT

    conf_dir = "#{options.prefix}/etc/nginx/sites-available"
    conf_dir_enabled = "#{options.prefix}/etc/nginx/sites-enabled"
    conf = "#{conf_dir}/#{server}"

    begin
      unless File.directory? conf_dir
        raise "not a directory: #{conf_dir}"
      end

      unless File.directory? conf_dir_enabled
        raise "not a directory: #{conf_dir_enabled}"
      end

      if File.exists? conf
        raise "already exists: #{conf}"
      end
      `echo '#{file}' | sudo tee #{conf}`
      `sudo ln -s #{conf} #{conf_dir_enabled}/#{server}`
    rescue
      $stderr.puts "Error: #{$!.message}"
    end
  end
end

NginxConf.start