Unsupported "valueFrom" when configuring app config using bundle

[wallrothm]

Describe the issue

The possibility to use bundle variables when configuring the app was recently added in #4271

The implementation seems to be incomplete though, as there's currently no way to use valueFrom in this spec. Nor is it possible to combine app.yaml and the bundle app config (unless I'm missing something).

In practice, this means it's not possible to combine valueFrom with bundle variables.

Configuration

bundle:
 name: test

variables:
 catalog:
 description: The catalog to use
 default: dev_catalog
 warehouse_id:
 description: The SQL warehouse ID to use
 default: "1234-567890-abcd123"

targets:
 dev:
 mode: development
 default: true
 resources:
 apps:
 my-app:
 name: my-app
 source_code_path: "."
 config:
 env:
 - name: catalog
 value: ${var.catalog}
 - name: warehouse_id
 valueFrom: sql-warehouse
 resources:
 - name: sql-warehouse
 description: "A SQL warehouse for app to be able to work with"
 sql_warehouse:
 id: ${var.warehouse_id}
 permission: "CAN_USE"

Steps to reproduce the behavior

databricks bundle validate

Expected Behavior

The bundle validation to succeed (and deployment to work).

Actual Behavior

> databricks bundle validate
Warning: unknown field: valueFrom
 at targets.dev.resources.apps.my-app.config.env[1]
 in databricks.yml:26:17

Warning: required field "value" is not set
 at resources.apps.my-app.config.env[1]
 in databricks.yml:25:17

OS and CLI version

Windows 11
Databricks CLI v0.283.0

Is this a regression?

No, the functionality is new.

Debug Logs

Output logs if you run the command with debug logs enabled. Example: databricks bundle deploy --log-level=debug. Redact if needed

[cicorias]

has there been any doc updates on this at all?

[andrewnester]

Feel free to take a look at this doc on setting up apps in DABs https://docs.databricks.com/aws/en/dev-tools/bundles/resources#app-config

[cicorias]

Feel free to take a look at this doc on setting up apps in DABs https://docs.databricks.com/aws/en/dev-tools/bundles/resources#app-config

yes -- seen that but nothing on value_from that I can see and a link to the came case approach on https://docs.databricks.com/aws/en/dev-tools/databricks-apps/app-runtime

regardless, your other note on snake case in DAB yaml is very helpful -- thanks