First pass fix for non-existent users being passed to the calculate user storage task

[rtibbles]

Description

• Catch and log non-existent users.

Issue Addressed (if applicable)

Fixes #2825

Steps to Test

• Upload a file
• Finish up editing the contentnode
• Go to upload a new file
• Confirm that your storage has still updated properly

[codecov]

Codecov Report

Merging #2961 (9a5601a) into hotfixes (28587f8) will increase coverage by 4.91%.
The diff coverage is 92.89%.

@@             Coverage Diff              @@
##           hotfixes    #2961      +/-   ##
============================================
+ Coverage     80.80%   85.72%   +4.91%     
============================================
  Files           281      298      +17     
  Lines         12659    15879    +3220     
============================================
+ Hits          10229    13612    +3383     
+ Misses         2430     2267     -163     

Impacted Files	Coverage Δ
contentcuration/contentcuration/decorators.py	56.60% <50.00%> (-37.60%)	⬇️
...ntentcuration/contentcuration/db/models/manager.py	91.20% <90.98%> (-8.80%)	⬇️
contentcuration/contentcuration/forms.py	82.35% <93.90%> (+33.89%)	⬆️
contentcuration/contentcuration/api.py	92.06% <100.00%> (+1.43%)	⬆️
...tentcuration/contentcuration/context_processors.py	100.00% <100.00%> (ø)
...ontentcuration/contentcuration/db/advisory_lock.py	100.00% <100.00%> (ø)
...tcuration/contentcuration/db/models/expressions.py	93.33% <100.00%> (-6.67%)	⬇️
...entcuration/contentcuration/db/models/functions.py	100.00% <100.00%> (ø)
...ation/contentcuration/tests/test_rest_framework.py	36.93% <0.00%> (-63.07%)	⬇️
contentcuration/contentcuration/utils/format.py	21.05% <0.00%> (-49.54%)	⬇️
... and 181 more

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[micahscopes]

With the user user@b.com, I wasn't able to get the available storage bar to update. I also didn't see any errors in the console. Not sure what's going on?

[micahscopes]

👍

[pcenov]

@rtibbles today I tested the following 2 cases as mentioned in the QA Scenarios section of #3044:

• File upload and user storage status
• Adding and deleting a file updates publish channel size

I have to report that both test cases are currently failing because the 'Total storage' value remains the same after uploading or deleting a file. See the following screenshots where you can see that the initial storage size of 34 MB remains unchanged:

Tested mainly with the following user: cenov1@melon.bg but also with another one cenov2@melon.bg again with no observable change in the 'Total storage' value.

@radinamatic

[rtibbles]

Yes, my fix here was to prevent backend errors - seems like we have more work to do for cache invalidation here.

Can you file an issue with the above so we can track?

[pcenov]

Filed a new issue with the above here: #3058