Module: Inspec::Backend

Defined in:
lib/inspec/backend.rb

Defined Under Namespace

Modules: Base

Class Method Summary collapse

Class Method Details

.create(config) ⇒ TransportBackend

Create the transport backend with aggregated resources.

Parameters:

Returns:

  • (TransportBackend) —

    enriched transport instance



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# File 'lib/inspec/backend.rb', line 45

def self.create(config) # rubocop:disable Metrics/AbcSize
  train_credentials = config.unpack_train_credentials
  transport_name = Train.validate_backend(train_credentials)
  transport = Train.create(transport_name, train_credentials)
  if transport.nil?
    raise "Can't find transport backend '#{transport_name}'."
  end

  connection = transport.connection
  if connection.nil?
    raise "Can't connect to transport backend '#{transport_name}'."
  end

  # Set caching settings. We always want to enable caching for
  # the Mock transport for testing.
  if config[:backend_cache] || config[:backend] == :mock
    Inspec::Log.debug "Option backend_cache is enabled"
    connection.enable_cache(:file)
    connection.enable_cache(:command)
  elsif config[:debug_shell]
    Inspec::Log.debug "Option backend_cache is disabled"
    connection.disable_cache(:file)
    connection.disable_cache(:command)
  else
    Inspec::Log.debug "Option backend_cache is disabled"
    connection.disable_cache(:file)
    connection.disable_cache(:command)
  end

  cls = Class.new do
    include Base

    define_method :backend do
      connection
    end

    def method_missing(id, *args, &blk)
      Inspec::DSL.method_missing_resource(self, id, *args)
    rescue LoadError
      super
    end

    Inspec::Resource.registry.each do |id, r|
      define_method id.to_sym do |*args|
        r.new(self, id.to_s, *args)
      end
    end
  end

  cls.new
rescue Train::ClientError => e
  raise "Client error, can't connect to '#{transport_name}' backend: #{e.message}"
rescue Train::TransportError => e
  raise "Transport error, can't connect to '#{transport_name}' backend: #{e.message}"
end