Add streaming server

[saschagrunert]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Adding streaming server support.

Which issue(s) this PR fixes:

None

Special notes for your reviewer:

Refers to cri-o/cri-o#7826

Does this PR introduce a user-facing change?

Added streaming server support.

[openshift-ci]

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Codecov Report

Attention: Patch coverage is 59.04762% with 43 lines in your changes missing coverage. Please review.

Project coverage is 48.36%. Comparing base (4e0f474) to head (944e709).
Report is 795 commits behind head on main.

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Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2070       +/-   ##
===========================================
+ Coverage   37.53%   48.36%   +10.82%     
===========================================
  Files          15      131      +116     
  Lines        1268     4605     +3337     
  Branches      414      908      +494     
===========================================
+ Hits          476     2227     +1751     
- Misses        526     1783     +1257     
- Partials      266      595      +329     

[rphillips]

+1 to axum. Can we use a domain socket instead of a tcp socket?

[saschagrunert]

+1 to axum. Can we use a domain socket instead of a tcp socket?

I have to check if Kubernetes supports that, but generally yes 👍

[saschagrunert]

+1 to axum. Can we use a domain socket instead of a tcp socket?

No, it's currently not due to:
https://github.com/kubernetes/client-go/blob/1518fca9f06c6a73fc091535b8966c71704e657b/transport/websocket/roundtripper.go#L109

[saschagrunert]

@kwilczynski @haircommander PTAL, shall we get this in?

[saschagrunert]

Rebased

[saschagrunert]

Rebased again.

[rphillips]

Did we get past the memory usage? I believe that blocked this feature before?

[saschagrunert]

Did we get past the memory usage? I believe that blocked this feature before?

The memory usage will increase because the code added for the streaming server adds a static amount per instance.

-	export MAX_RSS_KB=9500 && \
+	export MAX_RSS_KB=12000 && \

We could make it a compilation feature but this would increase shipping complexity.