# encoding: utf-8
require 'one_apm/inst/rails4/action_view_subscriber'

LibraryDetection.defer do
  @name = :rails4_view

  depends_on do
    defined?(::Rails) && ::Rails::VERSION::MAJOR.to_i == 4
  end

  depends_on do
    !OneApm::Agent.config[:disable_view_instrumentation] &&
      !OneApm::Agent::Instrumentation::ActionViewSubscriber.subscribed?
  end

  executes do
    ::OneApm::Agent.logger.info 'Installing Rails 4 view instrumentation'
  end

  executes do
    OneApm::Agent::Instrumentation::ActionViewSubscriber.subscribe(/render_.+\.action_view$/)
  end
end