fix: add support for minor versions (#132)

iam_groups_authn/sync.py

@@ -28,7 +28,7 @@
     InstanceConnectionName,
 )
 from iam_groups_authn.iam_admin import get_iam_users
-from iam_groups_authn.utils import DatabaseVersion
+from iam_groups_authn.utils import DatabaseVersion, strip_minor_version
 from iam_groups_authn.mysql import (
     init_mysql_connection_engine,
     MysqlRoleService,
@@ -74,7 +74,6 @@ async def groups_sync(
     async with ClientSession(
         headers={"Content-Type": "application/json"}
     ) as client_session:
-
         # create UserService object for API calls
         user_service = UserService(client_session, credentials)
 
@@ -369,6 +368,8 @@ async def get_database_version(self, instance_connection_name):
             logging.debug(
                 f"[{project}:{region}:{instance}] Database version found: {database_version}"
             )
+            # if major version is supported, we support minor version
+            database_version = strip_minor_version(database_version)
             return DatabaseVersion(database_version)
         except ValueError as e:
             raise ValueError(

iam_groups_authn/utils.py

@@ -87,3 +87,13 @@ def grant_group_role(self, role, users):
     @abstractmethod
     def revoke_group_role(self, role, users):
         pass
+
+
+def strip_minor_version(database_version: str) -> str:
+    """
+    Helper method for stripping minor version suffix from database version.
+    """
+    for version in DatabaseVersion.__members__.keys():
+        if database_version.startswith(version):
+            database_version = version
+    return database_version

tests/unit/test_database_versions.py

@@ -0,0 +1,38 @@
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import pytest
+
+from iam_groups_authn.utils import strip_minor_version
+
+test_data = [
+    ("MYSQL_8_0", "MYSQL_8_0"),
+    ("MYSQL_8_0_26", "MYSQL_8_0"),
+    ("MYSQL_8_0_35", "MYSQL_8_0"),
+    ("POSTGRES_15", "POSTGRES_15"),
+    ("POSTGRES_14", "POSTGRES_14"),
+    ("POSTGRES_13", "POSTGRES_13"),
+    ("POSTGRES_12", "POSTGRES_12"),
+    ("POSTGRES_11", "POSTGRES_11"),
+    ("POSTGRES_10", "POSTGRES_10"),
+    ("POSTGRES_9_6", "POSTGRES_9_6"),
+]
+
+@pytest.mark.parametrize("database_version,expected", test_data)
+def test_strip_minor_version(database_version, expected):
+    """
+    Test that strip_minor_version() works correctly.
+    """
+    database_version = strip_minor_version(database_version)
+    assert database_version == expected