add some docs to manager

1 files changed, 13 insertions, 0 deletions

diff --git a/keystone/manager.py b/keystone/manager.py
index 566d2a23..d6d1f602 100644
--- a/keystone/manager.py
+++ b/keystone/manager.py
@@ -7,10 +7,23 @@ from keystone import utils
 
 
 class Manager(object):
+    """Base class for intermediary request layer.
+
+    The Manager layer exists to support additional logic that applies to all
+    or some of the methods exposed by a service that are not specific to the
+    HTTP interface.
+
+    It also provides a stable entry point to dynamic backends.
+
+    An example of a probable use case is logging all the calls.
+
+    """
+
     def __init__(self, driver_name):
         self.driver = utils.import_object(driver_name)
 
     def __getattr__(self, name):
+        """Forward calls to the underlying driver."""
         # NOTE(termie): context is the first argument, we're going to strip
         #               that for now, in the future we'll probably do some
         #               logging and whatnot in this class