add Shell script openshift-ci make some REST call to MR

[tarilabs]

In the scope of testing of Model Registry in openshift-ci:

• make a Shell script which invokes some REST calls to MR,
• so to make sure the REST endpoint is responsive,
• then create a K8s ISVC on the cluster,
• and display the MR InferenceService entities.

Later, in a subsequent issue/PR, once:

• Implement model registry inference service reconciliation odh-model-controller#135

is merged, the last bulletpoint can be automated and placed under test in the final part of this script so to make sure the K8s ISVC on the cluster reflected as a precise MR InferenceService entity.

Description

Resolves #294

How Has This Been Tested?

Tested with:

OCP_CLUSTER_NAME="rosa.mmortari-rosa-h.w0x4.p3.openshiftapps.com"

Result:

Registered Model ID: 27
Model Version ID: 28
Model Artifact ID: 14
inferenceservice.serving.kserve.io/demo-20240208144831 created
InferenceService entities on MR:
{"items":[],"nextPageToken":"","pageSize":0,"size":0}

Merge criteria:

• The commits and have meaningful messages; the author will squash them after approval or will ask to merge with squash.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[tarilabs]

the K8s ISVC is created with the IDs from the MR REST calls

[tarilabs]

As confirmed to offline review, this will eventually transform into a loop-while, waiting for the condition than some InferenceService entity on MR is valorized with the registeredModelId, modelVersionId as needed.

(once opendatahub-io/odh-model-controller#135 merged)

This described change, I suggest to be done in a subsequent PR, as this covers already for basic REST functionality.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (44ce399) 76.42% compared to head (fa2b5a4) 76.42%.

Additional details and impacted files

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  Coverage   76.42%   76.42%           
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  Files          17       17           
  Lines        1909     1909           
  Branches       73       73           
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  Hits         1459     1459           
  Misses        276      276           
  Partials      174      174           

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[lampajr]

Very good starting point, I think this could be refined in subsequent PRs if needed

[tonyxrmdavidson]

I think this is great for a starting point and /lgtm. Only thing I might add is to remove the entity using a rest api call once the reconciliation step is completed succesfully. That can be done later though.

[isinyaaa]

lgtm, just a nit on the shebang highlighted below :) still, I expect that we're not going to use this script a lot outside of the CI setup, so feel free to merge whatever works.

[tarilabs]

Only thing I might add is to remove the entity using a rest api call once the reconciliation step is completed succesfully

there is no concept of deletion in MLMD and consequently no concept of deletion also on MR.
an entity could only be patch-ed to a different state, such as:

https://github.com/opendatahub-io/model-registry/blob/901f8745b35fd777c2886b501955443c4247730e/api/openapi/model-registry.yaml#L920-L928