aminghadersohi commented on code in PR #44705:
URL: https://github.com/apache/superset/pull/44705#discussion_r4141831064
##########
superset/db_engine_specs/databricks.py:
##########
@@ -447,14 +480,40 @@ def impersonate_user(
# back to an empty string to force re-authentication when none is set.
url = url.set(password=user_token or "")
+ # Drop shared credentials from ``extra`` (a PAT, OAuth M2M client,
Azure
+ # service principal) so none of them reaches the connector next to the
+ # user's token. The secure extra is filtered the same way in
+ # ``update_params_from_encrypted_extra``.
+ connect_args = engine_kwargs.get("connect_args") or {}
+ filtered_connect_args = {
+ key: value
+ for key, value in connect_args.items()
+ if key not in DATABRICKS_SHARED_CREDENTIAL_CONNECT_ARGS
+ }
# The Python connector passes the token via ``connect_args`` instead
of the
# URL password, so keep it in sync (clearing it likewise forces
re-auth).
- connect_args = engine_kwargs.setdefault("connect_args", {})
if "access_token" in connect_args:
- connect_args["access_token"] = user_token or ""
+ filtered_connect_args["access_token"] = user_token or ""
+ engine_kwargs["connect_args"] = filtered_connect_args
return url, engine_kwargs
+ @classmethod
+ def start_oauth2_dance(cls, database: Database) -> None:
+ """
+ Start the OAuth2 dance only when the database impersonates the user.
+
+ The user's OAuth2 token only reaches the connection through
+ ``impersonate_user``. Without impersonation the connection uses the
+ shared credential, so an authorization prompt cannot fix an auth
failure
+ (e.g. a revoked shared token returning HTTP 401). Return instead, so
the
+ caller raises the original error for an admin to act on.
+ """
+ if not database.impersonate_user:
Review Comment:
Confirmed: `UpdateDatabaseCommand` catches `MissingOAuth2TokenError` at
`update.py:128` and skips the sync. I added a "Known limitations (follow-up)"
section to the PR description covering this path and the
`ValidateDatabaseParametersCommand` one, so both are tracked for the same
engine-agnostic follow-up.
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