retry_on_failure.rb

# excute the given block, retying only when one of the given exceptions is raised
module RetryOnFailure
  def retry_on_failure(*exception_list)
    retry_count = 5
    begin
      yield
    rescue *exception_list => e
      if retry_count > 0
        retry_count -= 1
        puts "Exception, trying again #{retry_count} more times"
        retry
      else
        HoptoadNotifier.notify(e)
        raise e
      end
    end
  end
end