🐛 Attempt to avoid connection pool running out of connections

[GitHK]

What do these changes do?

Connections pool slowly fills up and at some point connections run out. This instructs the remote webserver (aka: the sidecar's Uvicorn to close the connection after the request is over).

If this brings no benefits will replace the global client with a per sidecar client.

Related issue/s

• director-v2 shared client connection pool runs out of clients #3944
• improving dynamic-sidecar design osparc-issues#638

How to test

Checklist

[codecov]

Codecov Report

Merging #3947 (b75ab69) into master (5a04039) will increase coverage by 14.3%.
The diff coverage is 100.0%.

@@            Coverage Diff            @@
##           master   #3947      +/-   ##
=========================================
+ Coverage    71.9%   86.2%   +14.3%     
=========================================
  Files         898     126     -772     
  Lines       38439    6380   -32059     
  Branches      839       0     -839     
=========================================
- Hits        27643    5504   -22139     
+ Misses      10588     876    -9712     
+ Partials      208       0     -208     

Flag	Coverage Δ
integrationtests	?
unittests	86.2% <100.0%> (+6.6%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...tor_v2/modules/dynamic_sidecar/api_client/_base.py	98.6% <100.0%> (+8.3%)	⬆️
...ules/dynamic_sidecar/docker_service_specs/proxy.py	53.8% <0.0%> (-46.2%)	⬇️
...modules/dynamic_sidecar/scheduler/_core/_events.py	62.0% <0.0%> (-34.7%)	⬇️
...s/dynamic_sidecar/scheduler/_core/_events_utils.py	56.0% <0.0%> (-34.4%)	⬇️
...v2/modules/dynamic_sidecar/docker_compose_specs.py	71.4% <0.0%> (-22.7%)	⬇️
...s/dynamic_sidecar/docker_service_specs/settings.py	41.5% <0.0%> (-22.7%)	⬇️
...r_v2/modules/dynamic_sidecar/api_client/_public.py	68.6% <0.0%> (-21.0%)	⬇️
...or_v2/modules/db/repositories/projects_networks.py	52.1% <0.0%> (-17.4%)	⬇️
...vice_director_v2/api/routes/running_interactive.py	81.2% <0.0%> (-12.5%)	⬇️
...es/dynamic_sidecar/docker_service_specs/sidecar.py	79.1% <0.0%> (-6.3%)	⬇️
... and 841 more

[codeclimate]

Code Climate has analyzed commit b75ab69 and detected 0 issues on this pull request.

View more on Code Climate.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.2% Duplication

[pcrespov]

This sounds like a plausible solution to the saturation of connections we detected! thx