fix(import-datasources): Use "admin" user as default for importing datasources (#27154)

superset/cli/importexport.py

@@ -28,6 +28,7 @@ from flask.cli import with_appcontext
 
 from superset import security_manager
 from superset.extensions import db
+from superset.utils.core import override_user
 
 logger = logging.getLogger(__name__)
 
@@ -170,12 +171,20 @@ def import_dashboards(path: str, username: Optional[str]) -> None:
     "-p",
     help="Path to a single ZIP file",
 )
-def import_datasources(path: str) -> None:
+@click.option(
+    "--username",
+    "-u",
+    required=False,
+    default="admin",
+    help="Specify the user name to assign datasources to",
+)
+def import_datasources(path: str, username: Optional[str] = "admin") -> None:
     """Import datasources from ZIP file"""
     # pylint: disable=import-outside-toplevel
     from superset.commands.dataset.importers.dispatcher import ImportDatasetsCommand
     from superset.commands.importers.v1.utils import get_contents_from_bundle
 
+    with override_user(user=security_manager.find_user(username=username)):
         if is_zipfile(path):
             with ZipFile(path) as bundle:
                 contents = get_contents_from_bundle(bundle)