How to exclude specific fields for comparison within the statefulset spec ?

[kaushiksrinivas]

Would like to exclude one specific field within the statefulset spec for the object matcher comparison. Is there a way to exclude specific fields in the statefulset spec for object matcher comparison ?

[pepov]

The way this goes is to remove those fields before the comparison happens. You can see examples here on how to do that:
https://github.com/banzaicloud/k8s-objectmatcher/blob/af0ea18f6ccf72e970a35f370ff0a392b3a1ffdc/patch/deletenull.go#L28-L58

And here is how to use it:

	opts := []patch.CalculateOption{
		patch.IgnoreStatusFields(),
		patch.IgnoreVolumeClaimTemplateTypeMetaAndStatus(),
	}

        patchResult, err := patch.DefaultPatchMaker.Calculate(existing.(runtime.Object), newObject.(runtime.Object), opts...)
	if err != nil {
		return err
	}

[kaushiksrinivas]

Hi,
The above code samples highlights only about status fields and volumeClainTemplateTypeMetaAndStatus fields. How to exclude for a field which is part of the spec. For example a field within the statefulset spec. Is that exclusion also possible ? I could not see any related functions to do the same.

[pepov]

those are examples, you have to craft the function you need for yourself right now

[kaushiksrinivas]

Got it... Would it be possible to implement such field exclusions as part of a common library within this repository ?
Or we could take them as contribution pull requests ?

[pepov]

It's absolutely possible! If you have something we can add it through a pull request of course!

[kaushiksrinivas]

Ok sure.. am currently working on excluding fields in statefulset. i will try to create them in a generic way and come up with a PR.
thanks for the info now.