fix(ssh-tunnel): fix dataset creation flow through modal for DB with …

…tunnel (apache#22581)

superset/models/core.py

@@ -744,13 +744,14 @@ def update_params_from_encrypted_extra(self, params: Dict[str, Any]) -> None:
     def get_table(self, table_name: str, schema: Optional[str] = None) -> Table:
         extra = self.get_extra()
         meta = MetaData(**extra.get("metadata_params", {}))
-        return Table(
-            table_name,
-            meta,
-            schema=schema or None,
-            autoload=True,
-            autoload_with=self._get_sqla_engine(),
-        )
+        with self.get_sqla_engine_with_context() as engine:
+            return Table(
+                table_name,
+                meta,
+                schema=schema or None,
+                autoload=True,
+                autoload_with=engine,
+            )
 
     def get_table_comment(
         self, table_name: str, schema: Optional[str] = None
@@ -846,12 +847,12 @@ def get_perm(self) -> str:
         return self.perm  # type: ignore
 
     def has_table(self, table: Table) -> bool:
-        engine = self._get_sqla_engine()
-        return engine.has_table(table.table_name, table.schema or None)
+        with self.get_sqla_engine_with_context() as engine:
+            return engine.has_table(table.table_name, table.schema or None)
 
     def has_table_by_name(self, table_name: str, schema: Optional[str] = None) -> bool:
-        engine = self._get_sqla_engine()
-        return engine.has_table(table_name, schema)
+        with self.get_sqla_engine_with_context() as engine:
+            return engine.has_table(table_name, schema)
 
     @classmethod
     def _has_view(

tests/integration_tests/core_tests.py

@@ -27,10 +27,12 @@
 from urllib.parse import quote
 
 import superset.utils.database
+from superset.utils.core import backend
 from tests.integration_tests.fixtures.birth_names_dashboard import (
     load_birth_names_dashboard_with_slices,
     load_birth_names_data,
 )
+from sqlalchemy import Table
 
 import pytest
 import pytz
@@ -79,6 +81,7 @@
     load_world_bank_dashboard_with_slices,
     load_world_bank_data,
 )
+from tests.integration_tests.conftest import CTAS_SCHEMA_NAME
 
 logger = logging.getLogger(__name__)
 
@@ -1673,6 +1676,16 @@ def test_explore_redirect(self, mock_command: mock.Mock):
         )
         self.assertRedirects(rv, f"/explore/?form_data_key={random_key}")
 
+    @pytest.mark.usefixtures("load_birth_names_dashboard_with_slices")
+    def test_has_table_by_name(self):
+        if backend() in ("sqlite", "mysql"):
+            return
+        example_db = superset.utils.database.get_example_database()
+        assert (
+            example_db.has_table_by_name(table_name="birth_names", schema="public")
+            is True
+        )
+
 
 if __name__ == "__main__":
     unittest.main()