feat: Postgres supported as Registry, Online store, and Offline store

[nossrannug]

Signed-off-by: Gunnar Sv Sigurbjörnsson gunnar.sigurbjornsson@gmail.com

What this PR does / why we need it:
Adds support for postgres as Registry, and Online and Offline stores.

[felixwang9817]

@nossrannug looking good overall! left some comments for you (no rush at all)

would also suggest that you add in a template so that users can easily initialize a postgres-based feature repo with feast init -t postgres, see https://github.com/feast-dev/feast/pull/2349/files for an example of Spark PR adding in a template

would also recommend adding some docs so folks know how to use postgres properly! once again see Spark PR for how to add docs

[achals]

Hi @nossrannug, are you still planning on working on this PR? Is there anything we can do to help?

[nossrannug]

Hi @nossrannug, are you still planning on working on this PR? Is there anything we can do to help?

Yes, I would like to see this PR completed. Real life stuff and lack of motivation have been my biggest blockers. I'll take a stab at it today and see how it goes.

[achals]

Hi @nossrannug, are you still planning on working on this PR? Is there anything we can do to help?

Yes, I would like to see this PR completed. Real life stuff and lack of motivation have been my biggest blockers. I'll take a stab at it today and see how it goes.

Totally understand - let us know if there's anything we can do to help!

[nossrannug]

Thanks, @achals, I greatly appreciate it.

I took a quick look at it over easter. I'm able to run:

feast init -t postgres random_folder
cd random_folder
feast apply
feast materialize-incremental $(date -u +"%Y-%m-%dT%H:%M:%S")
python test.py

I can also run make test-python-universal-postgres. Although I'm intentionally skipping some tests like persisting a tmp table for the results because I haven't implemented that functionality.

I think the main thing left now is to update the version lock files. I'll see if I can get that done later today and then I don't know if there is much left. I'll give you and @felixwang9817 a ping when I think I've covered everything to ask for your review.

[kevjumba]

@nossrannug let me see if I can get the unit test builds to work really quickly.

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

Attention: Patch coverage is 38.74346% with 234 lines in your changes missing coverage. Please review.

Project coverage is 82.24%. Comparing base (f372981) to head (72e9e3e).
Report is 1146 commits behind head on master.

Files with missing lines	Patch %	Lines
..._stores/contrib/postgres_offline_store/postgres.py	33.33%	96 Missing ⚠️
...thon/feast/infra/online_stores/contrib/postgres.py	30.00%	70 Missing ⚠️
.../contrib/postgres_offline_store/postgres_source.py	48.07%	27 Missing ⚠️
sdk/python/feast/type_map.py	25.00%	15 Missing ⚠️
...hon/feast/infra/utils/postgres/connection_utils.py	48.00%	13 Missing ⚠️
...n/feature_repos/universal/data_sources/postgres.py	53.57%	13 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2401      +/-   ##
==========================================
- Coverage   83.68%   82.24%   -1.45%     
==========================================
  Files         147      154       +7     
  Lines       12353    12735     +382     
==========================================
+ Hits        10338    10474     +136     
- Misses       2015     2261     +246     

Flag	Coverage Δ
integrationtests	72.53% <25.00%> (-0.55%)	⬇️
unittests	59.83% <38.74%> (-0.66%)	⬇️

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[kevjumba]

@nossrannug let me see if I can get the unit test builds to work really quickly.

Unit tests should be working now.

[achals]

/lgtm

[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: achals, nossrannug

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