✨ Add new SyncEngine, support async and sync code - with fixed session

[tiangolo]

✨ Add new SyncEngine, support async and sync code - with fixed session

This is the same as #225, but it includes the fixes to share the same session in #227

This would supersede #225 if the session fix in #227 is accepted.

I'm doing it here as an additional PR because there are a couple of changes and fixes needed in the new SyncEngine to handle that same issue with the session.

[codecov]

Codecov Report

Merging #231 (8850bae) into master (623fa27) will decrease coverage by 0.05%.
The diff coverage is 99.79%.

❗ Current head 8850bae differs from pull request most recent head 51d2585. Consider uploading reports for the commit 51d2585 to get more accurate results

@@             Coverage Diff             @@
##            master     #231      +/-   ##
===========================================
- Coverage   100.00%   99.94%   -0.06%     
===========================================
  Files           38       38              
  Lines         2725     3424     +699     
  Branches       413      483      +70     
===========================================
+ Hits          2725     3422     +697     
- Misses           0        1       +1     
- Partials         0        1       +1     

Flag	Coverage Δ
tests-3.6-4-standalone	98.29% <95.12%> (-1.42%)	⬇️
tests-3.6-4.2-standalone	98.29% <95.12%> (-1.42%)	⬇️
tests-3.6-4.4-standalone	98.29% <95.12%> (-1.42%)	⬇️
tests-3.7-4-standalone	98.14% <95.12%> (-1.38%)	⬇️
tests-3.7-4.2-standalone	98.14% <95.12%> (-1.38%)	⬇️
tests-3.7-4.4-standalone	98.14% <95.12%> (-1.38%)	⬇️
tests-3.8-4-replicaSet	98.30% <99.79%> (+0.36%)	⬆️
tests-3.8-4-standalone	98.10% <95.14%> (-1.35%)	⬇️
tests-3.8-4.2-sharded	96.90% <95.14%> (-1.05%)	⬇️
tests-3.8-4.2-standalone	98.10% <95.14%> (-1.35%)	⬇️
tests-3.8-4.4-standalone	98.10% <95.14%> (-1.35%)	⬇️
tests-3.9-4-standalone	97.98% <94.93%> (-1.32%)	⬇️
tests-3.9-4.2-standalone	97.98% <94.93%> (-1.32%)	⬇️
tests-3.9-4.4-standalone	97.98% <94.93%> (-1.32%)	⬇️

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Impacted Files	Coverage Δ
odmantic/engine.py	99.20% <98.57%> (-0.80%)	⬇️
odmantic/__init__.py	100.00% <100.00%> (ø)
tests/integration/fastapi/test_doc_example.py	100.00% <100.00%> (ø)
tests/integration/test_embedded_model.py	100.00% <100.00%> (ø)
tests/integration/test_engine.py	100.00% <100.00%> (ø)
tests/integration/test_engine_reference.py	100.00% <100.00%> (ø)
tests/integration/test_query.py	100.00% <100.00%> (ø)
tests/integration/test_types.py	100.00% <100.00%> (ø)
tests/integration/test_zoo.py	100.00% <100.00%> (ø)

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[tiangolo]

I added a couple of small tests to check the errors when motor is not installed, this should fix the line missing coverage. 😎

[art049]

Awesome @tiangolo !
I just reviewed everything and it looks perfect to me.

There is just a tiny rebase required and it will be good for a merge!
I can handle the documentation part if you want, it shouldn't be that long.

Can't wait to see what you plan to do with bulk_writes and switch_collection!

[art049]

Actually I though about it again and it might be quite painful for existing users to have to change the dependency in order to upgrade to the new release.
I think it would be smoother to let the motor dependency as required.
I'm not totally sure but wdyt @tiangolo ?

[art049]

Merged in #242 !
Many thanks @tiangolo ! 🔥

[tiangolo]

Awesome, thanks a lot! 🚀

About having Motor as optional or not, I think that's totally up to you. I get it that as ODMantic was always Motor-specific it could feel weird suddenly having that as optional.

If it was a new project, I guess it would be a no-brainer but I get that it can make sense to keep it required for backwards compatibility.

Maybe it can be done in a future release after having some warning in the docs for a while or something like that. Anyway, I don't feel strongly about it in one way or the other. 😅