1 files changed, 39 insertions, 0 deletions
diff --git a/nova/manager.py b/nova/manager.py
new file mode 100644
index 000000000..e9aa50c56
--- /dev/null
+++ b/nova/manager.py
@@ -0,0 +1,39 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2010 United States Government as represented by the
+# Administrator of the National Aeronautics and Space Administration.
+# All Rights Reserved.
+#
+#    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
+#
+#         http://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.
+"""
+Base class for managers of different parts of the system
+"""
+
+from nova import utils
+from nova import flags
+
+
+FLAGS = flags.FLAGS
+flags.DEFINE_string('db_driver', 'nova.db.api',
+                    'driver to use for volume creation')
+
+
+class Manager(object):
+    """DB driver is injected in the init method"""
+    def __init__(self, host=None, db_driver=None):
+        if not host:
+            host = FLAGS.host
+        self.host = host
+        if not db_driver:
+            db_driver = FLAGS.db_driver
+        self.db = utils.import_object(db_driver)  # pylint: disable-msg=C0103