Vendors: Retry getting Amazon data from the affiliate server

[cclauss]

Closes #5474

The /isbn endpoint should retry a few times to see if the affiliate service has the Amazon result in the cache. If this import is already queued up, the set operation will ensure that it will be ignored automatically.

Technical

Testing

Screenshot

Stakeholders

[cdrini]

Can you search the history to see if we can do list | str ? I vaguely recall we couldn't for some reason... There's a PR somewhere I think. Might need Union[list, str]

[cclauss]

Did you mean to close this PR?

#6320 says that the type hints thing is about Cython use in Solr.

• Confirmed by https://cython.readthedocs.io/en/latest/src/tutorial/pure.html#typing-module

Also see:

• Run pyupgrade --keep-runtime-typing in pre-commit #5922
• https://github.com/internetarchive/openlibrary/blob/master/scripts/solr_builder/solr_builder/fn_to_cli.py

[cdrini]

Ooops!!! No I did not meant to close it :P

[cclauss]

Test this on one of the VMs like testing.

• Type hints
• Comments

[cclauss]

Ready for review.