Module: DockerfileRails::Scanner

Included in:
DockerfileGenerator
Defined in:
lib/dockerfile-rails/scanner.rb

Instance Method Summary collapse

Instance Method Details

#scan_rails_app ⇒ Object 



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# File 'lib/dockerfile-rails/scanner.rb', line 5

def scan_rails_app
  ### ruby gems ###

  @gemfile = []
  @git = false

  if File.exist? "Gemfile.lock"
    parser = Bundler::LockfileParser.new(Bundler.read_file("Gemfile.lock"))
    @gemfile += parser.specs.map { |spec, version| spec.name }
    @git ||= ENV["RAILS_ENV"] != "test" && parser.specs.any? do |spec|
      spec.source.instance_of? Bundler::Source::Git
    end

    # determine if the application is affected by the net-pop bug
    # https://github.com/ruby/ruby/pull/11006#issuecomment-2176562332
    if RUBY_VERSION == "3.3.3" && @gemfile.include?("net-pop")
      @netpopbug = parser.specs.find { |spec| spec.name == "net-pop" }.dependencies.empty?
    end
  end

  if File.exist? "Gemfile"
    begin
      gemfile_definition = Bundler::Definition.build("Gemfile", nil, [])
      @gemfile += gemfile_definition.dependencies.map(&:name)

      unless ENV["RAILS_ENV"] == "test"
        @git = !gemfile_definition.spec_git_paths.empty?
      end
    rescue => error
      STDERR.puts error.message
    end
  end

  @anycable = @gemfile.include? "anycable-rails"
  @vips = @gemfile.include? "ruby-vips"
  @bootstrap = @gemfile.include? "bootstrap"
  @puppeteer = @gemfile.include? "puppeteer"
  @bootsnap = @gemfile.include? "bootsnap"

  ### database ###

  database = YAML.load_file("config/database.yml", aliases: true).
    dig("production", "adapter") rescue nil

  if database == "sqlite3"
    @sqlite3 = true
  elsif database == "postgresql"
    @postgresql = true
  elsif (database == "mysql") || (database == "mysql2") || (database == "trilogy")
    @mysql = true
  elsif database == "sqlserver"
    @sqlserver = true
  end

  @sqlite3 = true if @gemfile.include? "sqlite3"
  @postgresql = true if @gemfile.include? "pg"
  @mysql = true if @gemfile.include?("mysql2") || using_trilogy?
  @sqlserver = true if @gemfile.include?("activerecord-sqlserver-adapter")

  ### node modules ###

  @package_json = []

  if File.exist? "package.json"
    @package_json += JSON.load_file("package.json")["dependencies"].keys rescue []
  end

  @puppeteer ||= @package_json.include? "puppeteer"

  ### cable/redis ###

  @cable = ! Dir["app/channels/*.rb"].empty?

  if @cable
    @redis_cable = true
    if (YAML.load_file("config/cable.yml").dig("production", "adapter") rescue "").include? "any_cable"
      @anycable = true
    end
  end

  if (IO.read("config/environments/production.rb") =~ /redis/i rescue false)
    @redis_cache = true
  end

  @redis = @redis_cable || @redis_cache
end

#using_trilogy? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dockerfile-rails/scanner.rb', line 92

def using_trilogy?
  @gemfile.include?("trilogy") || @gemfile.include?("activerecord-trilogy-adapter")
end