auto disable failing features if they break

ruby.rb

#pseudo code

class Rollout
  def auto_disable(feature, user, feature_block, old_block)
    if active?(feature, user)
      begin
        yield feature_block
      rescue => e
        deactivate(feature)
        raise e
      end
    else
      yield old_block
    end
  end
end

features = Rollout.new

feature = -> { raise if [0,1].sample == 0 }
old = -> { "old code" }

features.auto_disable(:chat, lender, feature, old, &:call)