[ISSUE] Issue with `databricks_app` dependent resources

[Frunkh]

Configuration

terraform {
  required_providers {
    databricks = {
      source  = "databricks/databricks"
      version = ">=1.85.0"
    }
  }
} 

resource "databricks_database_instance" "this" {
  name     = "ldh-lakebase-${lower(var.environment)}"
  capacity = "CU_1"
}

resource "databricks_app" "this" {
  name        = "placeholder"
  description = "placeholder"

  resources = [{
    name = "placeholder-database"
    database = {
      database_name = databricks_database_instance.this.name
      instance_name = "placeholder_app"
      permission    = "CAN_CONNECT_AND_CREATE"
    }
  }]

  depends_on = [databricks_database_instance.this]
} 

Expected Behavior

The terraform documentation (https://registry.terraform.io/providers/databricks/databricks/1.85.0/docs/resources/app) shows the database resource as a valid resource. I expect the provided terraform code to be accepted as valid.

Actual Behavior

The terraform plan fails to execute due to the following error message:

│ Error: Invalid Attribute Combination
│ 
│   with module.create-lakehouse-app.databricks_app.this,
│   on create_lakehouse_app/main.tf line 6, in resource "databricks_app" "this":
│    6: resource "databricks_app" "this" {
│ 
│ No attribute specified when one (and only one) of
│ [resources[0].job.<.secret,resources[0].job.<.serving_endpoint,resources[0].job.<.sql_warehouse,resources[0].job.<.uc_securable]
│ is required

As you can see, database is not listed in the examples in the error message. It looks like the documentation of version 1.85.0 and the actual state are not in sync?

Steps to Reproduce

terraform plan

Terraform and provider versions

Terraform: 1.10.2
Databricks provider: 1.85.0

Is it a regression?

No.

Debug Output

Important Factoids

No

Would you like to implement a fix?

No

[peter-resnick]

This is likely an issue with the apps resource, not the database resource, but I experienced the same behavior.

The documentation suggests that database is a supported resource for a databricks_app but the latest releases of the provider do not actually allow that, as you can see here in the github where we explicitly set

exclusiveFields := []string{"job", "secret", "serving_endpoint", "sql_warehouse", "uc_securable"}

when you actually try to use a database resource with the app, you get:

│ [resources[0].job.<.secret,resources[0].job.<.serving_endpoint,resources[0].job.<.sql_warehouse,resources[0].job.<.uc_securable] is
│ required