Round 1 of changes for keystone integration.

 * Modified request context to allow it to hold all of the relevant data from the auth component.
 * Pulled out access to AuthManager from as many places as possible
 * Massive cleanup of unit tests
 * Made the openstack api fakes use fake Authentication by default

There are now only a few places that are using auth manager:
 * Authentication middleware for ec2 api (will move to stand-alone middleware)
 * Authentication middleware for os api (will be deprecated in favor of keystone)
 * Accounts and Users apis for os (will be switched to keystone or deprecated)
 * Ec2 admin api for users and projects (will be removed)
 * Nova-manage user and project commands (will be deprecated and removed with AuthManager)
 * Tests that test the above sections (will be converted or removed with their relevant section)
 * Tests for auth manager
 * Pipelib (authman can be removed once ec2 stand-alone middleware is in place)
 * xen_api (for getting images from old objectstore. I think this can be removed)

Vish

1 files changed, 16 insertions, 7 deletions

diff --git a/nova/utils.py b/nova/utils.py
index 8784a227d..737903f81 100644
--- a/nova/utils.py
+++ b/nova/utils.py
@@ -19,7 +19,6 @@
 
 """Utilities and helper functions."""
 
-import base64
 import datetime
 import functools
 import inspect
@@ -30,7 +29,6 @@ import os
 import random
 import re
 import socket
-import string
 import struct
 import sys
 import time
@@ -50,7 +48,8 @@ from nova import version
 
 
 LOG = logging.getLogger("nova.utils")
-TIME_FORMAT = "%Y-%m-%dT%H:%M:%SZ"
+ISO_TIME_FORMAT = "%Y-%m-%dT%H:%M:%SZ"
+PERFECT_TIME_FORMAT = "%Y-%m-%dT%H:%M:%S.%f"
 FLAGS = flags.FLAGS
 
 
@@ -361,16 +360,26 @@ def clear_time_override():
     utcnow.override_time = None
 
 
-def isotime(at=None):
-    """Returns iso formatted utcnow."""
+def strtime(at=None, fmt=PERFECT_TIME_FORMAT):
+    """Returns formatted utcnow."""
     if not at:
         at = utcnow()
-    return at.strftime(TIME_FORMAT)
+    return at.strftime(fmt)
+
+
+def parse_strtime(timestr, fmt=PERFECT_TIME_FORMAT):
+    """Turn a formatted time back into a datetime."""
+    return datetime.datetime.strptime(timestr, fmt)
+
+
+def isotime(at=None):
+    """Returns iso formatted utcnow."""
+    return strtime(at, ISO_TIME_FORMAT)
 
 
 def parse_isotime(timestr):
     """Turn an iso formatted time back into a datetime."""
-    return datetime.datetime.strptime(timestr, TIME_FORMAT)
+    return parse_strtime(timestr, ISO_TIME_FORMAT)
 
 
 def parse_mailmap(mailmap='.mailmap'):