retry_auth.rb

def request(verb, endpoint, opts={})
 retry_on_auth_failure do
  cached_token.request(verb, endpoint, opts)
 end
end

def retry_on_auth_failure(retries=1, timeout=0, &block)
 attempts_remaining = retries
  begin
   yield
  rescue OAuth2::Error => error
   if error.response.status == 401 && attempts_remaining > 0
    attempts_remaining -= 1
     cache_new_token
      sleep(timeout)
      retry
    else
     raise error
   end
 end
end

What about just this:

  def request(verb, endpoint, opts={})
    remaining_retries ||= 1
    cached_token.request(verb, endpoint, opts)
  rescue OAuth2::Error => error
    if retry?(error, remaining_retries)
      cache_new_token
      remaining_retries -= 1
      retry
    else
      raise error
    end
  end

Reference: http://blog.mirthlab.com/2012/05/25/cleanly-retrying-blocks-of-code-after-an-exception-in-ruby/