Data catalog Tag module

[lcaggio]

Data catalog Tag module. This is a simple module. The main reason for creating a module is the Tag factory.

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Checklist

I applicable, I acknowledge that I have:

• Read the contributing guide
• Ran terraform fmt on all modified files
• Regenerated the relevant README.md files using tools/tfdoc.py
• Made sure all relevant tests pass

[thinhha]

This looks great! Thanks Lorenzo.

[wiktorn]

I wonder about actual usage. @lcaggio based on your experience - is it multiple templates applied to single parent, or rather one template per parent?

Also, can template location can be different than tag location?

I wonder about remodeling this structure a bit, to reduce boilerplate code, like for example if I have multiple column on one parent to tag

[wiktorn]

Suggested change

	parent = "projects/${each.value.project_id}/locations/${each.value.project_id}/entryGroups/@bigquery/entries/${trim(base64encode(each.value.parent), "=")}"
	parent = "projects/${each.value.project_id}/locations/${each.value.location}/entryGroups/@bigquery/entries/${trim(base64encode(each.value.parent), "=")}"

[wiktorn]

Suggested change

	location = "europe-west-1"
	location = "europe-west1"

?

[lcaggio]

Thanks @wiktorn. From my experience, multiple Tag can be assigned to a resource (e.g. multiple tag on a dataset, less common for columns).

I think location can be different, but I am going to use this module in 2 customers really soon and I will check the structure of the module with reality of customer needs. I will update the module accordingly.