[WIP] First-class catalog and schema setting

[lennartkats-db]

Changes

This is the latest, experimental way to add first-class 'catalog' and 'schema' notion.

The basic idea is that databricks.yml can say

targets:
  dev:
    ...
    presets:
      catalog: dev
      schema: ${workspace.current_user.short_name} # the user's name, e.g. lennart_kats

  prod:
    ...
    presets:
      catalog: prod
      schema: finance

which will then configure the default schema for all resources in the bundle (pipelines, jobs, model serving endpoints, etc.)

A caveat exists for notebooks, which need use parameters to configure the catalog and schema. While the catalog and schema parameter values are automatically passed to all job tasks, notebooks need to consume the parameter values. We check whether they do this, and otherwise show a recommendation:

Recommendation: Use the 'catalog' and 'schema' parameters provided via 'presets.catalog' and 'presets.schema' using

  dbutils.widgets.text('catalog')
  dbutils.widgets.text('schema')
  catalog = dbutils.widgets.get('catalog')
  schema = dbutils.widgets.get('schema')
  spark.sql(f'USE {catalog}.{schema}')

  in src/notebook.ipynb:1:1

Note that the code above also helps for interactive notebook development scenarios: users can use the parameter widgets to set the catalog and schema they use during development.

Similarly, for Python and Wheel tasks, users must add some extra code to process a catalog and schema parameter. For Python tasks we show a similar recommendation; for wheel tasks we can't directly check for this.

Tests

This PR has basic tests while in draft. We'll mainly want to use testing to help maintain this code as new resources are added: we should have a reflection-based test that verifies that any new resource types and/or resource properties that set the catalog and schema can be defaulted using presets.catalog/schema.

[fjakobs]

+1 for having first-class support for catalog/schema. I don't have a strong opinion if it should be under presets or a global setting. I think both could work.

[eng-dev-ecosystem-bot]

Test Details: go/deco-tests/12253819228

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• PR number: 1979
• Commit SHA: 0acb2223bcabb41f176e1620cd8b5658818d32b9

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