Automatically retry shopify API requests if they fail due to API request limits (code 429)

shopify_backoff.rb

ShopifyAPI::Connection.class_eval do
  alias_method :shopify_request, :request

  def request(*args)
    count = 0
    limit = 10

    begin
      count += 1
      shopify_request(*args)
    rescue ActiveResource::ClientError => e
      # TODO look at code instead of static string? This is brittle
      if count >= limit || e.message != "Failed.  Response code = 429.  Response message = Too Many Requests."
        raise
      else
        sleep(count)
        retry
      end
    end
  end
end

@hrp FYI I've bundled this into a gem https://github.com/iloveitaly/shopify_api_extensions