UPS shipping method rates request has no caching

[MichaelThessel]

Preconditions (*)

1. Magento 2.3.3 & 2.4-develop.

Steps to reproduce (*)

1. This problem only appears when M2 is extended and UPS shipping set up
2. I have an installation where 3 different modules fetch the shipping totals on the cart page
3. They do this via:

Magento\Quote\Model\Quote\TotalsCollector->collectAddressTotals()

which then executes:

Magento\Shipping\Model\Rate->getAllRates()

which then executes:

Magento\Ups\Model\Carrier->_getXmlQuotes()

The problem is now that _getXmlQuotes does a remote request to: https://onlinetools.ups.com/ups.app/xml/Rate which takes 2-3s per request (see: vendor/magento/module-ups/Model/Carrier.php line 782).

The problem is that the remote request to the UPS API is not cached. So in my case this is executed 3 times for each page load of the cart page. Additionally this is worsened by the fact that the cart page does 2 more API calls to:

rest/default/V1/guest-carts/[token]/totals-information (see: vendor/magento/module-checkout/etc/webapi.xml)                          
rest/default/V1/guest-carts/[token]/estimate-shipping-methods (see: vendor/magento/module-quote/etc/webapi.xml)     

which trigger the same extensions again resulting in 3 additional calls each. So in total for each page load of the cart page 9 identical requests to the UPS API are sent.

In case somebody else runs into this. In my case the initiating modules are:

vendor/amasty/promo/Plugin/Quote/Model/Quote/TotalsCollectorPlugin.php 119    
vendor/aheadworks/module-sarp2/Model/Shipping/RatesCollector.php 77    
vendor/mirasvit/module-rewards/src/Rewards/Model/Total/Quote/Discount.php 259  

Additionally:

While looking at vendor/magento/module-ups/Model/Carrier.php I noticed that the XML for the remote request is manually pieced together. The parameters inserted into the XML are not escaped. If any of the parameters contains i.e. '<' the entire request falls apart. Simplexml is a system requirement for M2 and the XML should be generated using a XML lib.

Expected result (*)

1. Remote request is cached.

Actual result (*)

1. Remote request gets executed multiple times

[m2-assistant]

Hi @MichaelThessel. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.4-develop instance - upcoming 2.4.x release

For more details, please, review the Magento Contributor Assistant documentation.

@MichaelThessel do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

---

• Join Magento Community Engineering Slack and ask your questions in #github channel.

[m2-assistant]

Hi @engcom-Hotel. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).

  Details

  If the issue has a valid description, the label Issue: Format is valid will be added to the issue automatically. Please, edit issue description if needed, until label Issue: Format is valid appears.

• 2. Verify that issue has a meaningful description and provides enough information to reproduce the issue. If the report is valid, add Issue: Clear Description label to the issue by yourself.

• 3. Add Component: XXXXX label(s) to the ticket, indicating the components it may be related to.

• 4. Verify that the issue is reproducible on 2.4-develop branch

  Details

  - Add the comment @magento give me 2.4-develop instance to deploy test instance on Magento infrastructure.
  - If the issue is reproducible on 2.4-develop branch, please, add the label Reproduced on 2.4.x.
  - If the issue is not reproducible, add your comment that issue is not reproducible and close the issue and stop verification process here!

• 5. Add label Issue: Confirmed once verification is complete.

• 6. Make sure that automatic system confirms that report has been added to the backlog.

[magento-engcom-team]

✅ Confirmed by @engcom-Hotel
Thank you for verifying the issue. Based on the provided information internal tickets MC-30805 were created

Issue Available: @engcom-Hotel, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.