Replace DbMigrationError with DBMigrationError

because DbMigrationError is deprecated

Change-Id: I9fb20315c8451c590bce00167e9bd4c0c176b3aa

keystone/cmd/cli.py

@@ -458,7 +458,7 @@ class DbSync(BaseApp):
         status = 0
         try:
             expand_version = upgrades.get_db_version(repo='expand_repo')
-        except migration.exception.DbMigrationError:
+        except migration.exception.DBMigrationError:
             LOG.info('Your database is not currently under version '
                      'control or the database is already controlled. Your '
                      'first step is to run `keystone-manage db_sync '
@@ -467,11 +467,11 @@ class DbSync(BaseApp):
         try:
             migrate_version = upgrades.get_db_version(
                 repo='data_migration_repo')
-        except migration.exception.DbMigrationError:
+        except migration.exception.DBMigrationError:
             migrate_version = 0
         try:
             contract_version = upgrades.get_db_version(repo='contract_repo')
-        except migration.exception.DbMigrationError:
+        except migration.exception.DBMigrationError:
             contract_version = 0
 
         repo = migrate.versioning.repository.Repository(

keystone/common/sql/upgrades.py

@@ -179,7 +179,7 @@ def _sync_repo(repo_name):
         # an exception that we can safely ignore
         try:
             migration.db_version_control(engine, abs_path)
-        except (migration.exception.DbMigrationError,
+        except (migration.exception.DBMigrationError,
                 exceptions.DatabaseAlreadyControlledError):  # nosec
             pass
         init_version = get_init_version(abs_path=abs_path)
@@ -214,7 +214,7 @@ def _assert_not_schema_downgrade(version=None):
         try:
             current_ver = int(six.text_type(get_db_version()))
             if int(version) < current_ver:
-                raise migration.exception.DbMigrationError(
+                raise migration.exception.DBMigrationError(
                     _("Unable to downgrade schema"))
         except exceptions.DatabaseNotControlledError:  # nosec
             # NOTE(morganfainberg): The database is not controlled, this action

keystone/tests/unit/test_cli.py

@@ -682,7 +682,7 @@ class CliDBSyncTestCase(unit.BaseTestCase):
 
     @mock.patch('keystone.cmd.cli.upgrades.get_db_version')
     def test_db_sync_check_when_database_is_empty(self, mocked_get_db_version):
-        e = migration.exception.DbMigrationError("Invalid version")
+        e = migration.exception.DBMigrationError("Invalid version")
         mocked_get_db_version.side_effect = e
         checker = cli.DbSync()
 

keystone/tests/unit/test_sql_upgrade.py

@@ -1600,7 +1600,7 @@ class VersionTests(SqlMigrateBase):
     def test_assert_not_schema_downgrade(self):
         self.upgrade()
         self.assertRaises(
-            db_exception.DbMigrationError,
+            db_exception.DBMigrationError,
             upgrades._sync_common_repo,
             self.repos[LEGACY_REPO].max_version - 1)