Stop a training job

[lotif]

PR Type

Feature

Short Description

Clickup Ticket(s): Link(s) if applicable.

Adding a button on in-progress jobs to stop it. Clicking on it will call an API that will ultimately kill the clients' processes and the server processes.

In this PR I am:

• Saving the client and server PIDs in the database so they can be retrieved later
• Adding an API on the client that will allow to kill a client given its PID
• Adding an API on the server to stop a job. This API will call the client APIs one by one, and then it will kill the server process. It will also change the job status to "Finished With Error" and write down an error message.
• As a bonus, now that we have an error message field, I'm also setting it to the exception message when the /start endpoint fails
• Adding the stop button only for jobs that are in progress

Tests Added

Fully unit and integration tested

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 95.85492% with 8 lines in your changes missing coverage. Please review.

Project coverage is 94.31%. Comparing base (454cf11) to head (b959537).

Files with missing lines	Patch %	Lines
florist/api/routes/server/job.py	91.89%	3 Missing ⚠️
florist/app/jobs/page.tsx	94.33%	3 Missing ⚠️
florist/api/routes/server/training.py	92.30%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #147      +/-   ##
==========================================
+ Coverage   89.29%   94.31%   +5.02%     
==========================================
  Files          24       24              
  Lines        2411     2570     +159     
  Branches      138      149      +11     
==========================================
+ Hits         2153     2424     +271     
+ Misses        258      146     -112     

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[emersodb]

A couple of small comments on my end. I can't review the front-end stuff, but the back end components seem sound.

[emersodb]

Out of curiosity, why do we need this to be True now?

[lotif]

I should have added an explanation here, but daemon threads will not prevent the main thread to terminate if they are still running. This will solve an issue I have seen with shutting down the servers when there are listeners still running.

[emersodb]

Ah...that makes sense. Thanks for the background!