How to edit permissions of Databricks queries with REST API?

I am trying to give CAN_MANAGE permission to other users for a given set of SQL queries on Azure Databricks.

Browsing Databricks REST API reference, under the Databricks SQL > ACL / Permissions section there are both Get object ACL and Set object ACL endpoints available.

I am able to use the Get object ACL to return the current permissions however, using the Set object ACL does not work.

After further investigation I find that the docs state that:

> The SQL Permissions API is similar to the endpoints of the Permissions/Set. However, this exposes only one endpoint, which gets the Access Control List for a given object. You cannot modify any permissions using this API.
>
> There are three levels of permission:
>
> CAN_VIEW: Allows read-only access
>
> CAN_RUN: Allows read access and run access (superset of CAN_VIEW)
>
> CAN_MANAGE: Allows all actions: read, run, edit, delete, modify permissions (superset of CAN_RUN)

As such, I then moved to try the Identity and Access Management > Permissions APIs however both Get object permissions and Set permissions rely upon passing a request_object_type value.

Looking at the documentation it seems that queries aren't supported:

> The Permissions API lets you manage permissions for:
>
> - Clusters
> - Cluster policies
> - Delta Live Tables
> - pipelines
> - Directories
> - Jobs
> - MLflow experiments
> - MLflow registered models
> - Notebooks
> - Pools
> - Repos
> - Databricks SQL warehouses
> - Tokens

Payload:

request_object_id = <QUERY_ID>
request_object_type = "sql/queries" # Tested these values also: "queries", "sql_query_id", "query"
generic_permissions_url = f"https://<DATABRICKS_HOST>/api/2.0/permissions/{request_object_type}/{request_object_id}"

generic_permissions_url_response_get = requests.get(generic_permissions_url, headers=HEADERS)

if generic_permissions_url_response_get.status_code == 200:
    print('Data retrieved succesfully.')
    generic_permissions_url_get_parsed = json.loads(generic_permissions_url_response_get.text)
else:
    print('Error retrieving data: ', generic_permissions_url_response_get.text)

Response:

Error retrieving data:  {"error_code":"BAD_REQUEST","message":"Invalid Object Type"}

As such:

1. Is it currently possible to alter query permissions programmatically in (Azure) Databricks?
2. If so, how?

If you look into corresponding documentation section, then you will see that you need to use another URL: /api/2.0/preview/sql/permissions/{objectType}/{objectId} instead of /api/2.0/permissions/{objectType}/{objectId}. Also, objectType should be queries, not the sql/queries. Here is a working command for getting queries using curl:

curl -s -H "Authorization: Bearer $DATABRICKS_TOKEN" -H 'Accept: application/json' 
  "$DATABRICKS_HOST/api/2.0/preview/sql/permissions/queries/$QUERY_ID"

gives:

{
  "object_id": "queries/<....>",
  "object_type": "query",
  "access_control_list": [
    {
      "user_name": "....@domain.com",
      "permission_level": "CAN_MANAGE"
    },
    {
      "group_name": "users",
      "permission_level": "CAN_VIEW"
    },
    {
      "group_name": "admins",
      "permission_level": "CAN_MANAGE"
    }
  ]
}