Handling of no services case

[marcelldls]

At the moment if we get_services and no services are present (this can also happen when all the services are being restarted) then we raise an error f"No ec-services found in {self.target}". This was OK for calling ec ps but would need to be handled by the monitor which calls the same function.

Here the empty dataframe is represented by an empty dataframe with a Schema which allows the various operations without needing to add guards

@gilesknap this is unchanged since we tested it on your machine

[codecov]

Codecov Report

Attention: Patch coverage is 84.61538% with 6 lines in your changes missing coverage. Please review.

Project coverage is 82.35%. Comparing base (dcb747c) to head (dc06a9f).

Files with missing lines	Patch %	Lines
src/edge_containers_cli/cmds/argo_commands.py	88.46%	3 Missing ⚠️
src/edge_containers_cli/cmds/k8s_commands.py	76.92%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #178      +/-   ##
==========================================
+ Coverage   82.19%   82.35%   +0.16%     
==========================================
  Files          16       16              
  Lines        1022     1020       -2     
==========================================
  Hits          840      840              
+ Misses        182      180       -2     

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[gilesknap]

I am seeing an issue with this version and P47.

• use p47-deployment
• restart all services in sequence from top to bottom
  • this looked like it worked
• stop all services in sequence from top to bottom
• two of the services remain busy and can't be changed
• looking at argocd, it does not agree with the ready column shown by monitor, in fact all of the services appear to be running
  

[gilesknap]

@marcelldls we have agreed that these separate problems will be fixed in a later PR:

• ArgoCD can't handle multiple simultaneous commands
• an unhandled exception in a handler thread breaks monitor