Major refactorings - iteration 1 (Sourcery refactored)

[sourcery-ai]

Pull Request #458 refactored by Sourcery.

If you're happy with these changes, merge this Pull Request using the Squash and merge strategy.

NOTE: As code is pushed to the original Pull Request, Sourcery will
re-run and update (force-push) this Pull Request with new refactorings as
necessary. If Sourcery finds no refactorings at any point, this Pull Request
will be closed automatically.

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To manually merge these changes, make sure you're on the v3.0 branch, then run:

git fetch origin sourcery/v3.0
git merge --ff-only FETCH_HEAD
git reset HEAD^

Help us improve this pull request!

[sourcery-ai]

Sourcery Code Quality Report

✅  Merging this PR will increase code quality in the affected files by 0.46%.

Quality metrics	Before	After	Change
Complexity	0.65 ⭐	0.63 ⭐	-0.02 👍
Method Length	57.00 ⭐	56.17 ⭐	-0.83 👍
Working memory	6.22 🙂	6.00 ⭐	-0.22 👍
Quality	80.03% ⭐	80.49% ⭐	0.46% 👍

Other metrics	Before	After	Change
Lines	243	240	-3

Changed files	Quality Before	Quality After	Quality Change
docs/conf.py	73.00% 🙂	78.28% ⭐	5.28% 👍
mysql_autoxtrabackup/api/controller/controller.py	85.77% ⭐	82.52% ⭐	-3.25% 👎

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation

Legend and Explanation

The emojis denote the absolute quality of the code:

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• 😞 poor
• ⛔ very poor

The 👍 and 👎 indicate whether the quality has improved or gotten worse with this pull request.

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We are actively working on this report - lots more documentation and extra metrics to come!

Help us improve this quality report!