Reuse oslo for is_uuid_like() implementation

In the original code, isalnum() in is_uuid_like() doesn't allow "-",
while for UUID, format like aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa should be
allowed. This patch is to reuse uuidutils's API in oslo.

Change-Id: I339974c75a32d27f8e4443a1b97bb6e410933aa4
Signed-off-by: Shane Wang <shane.wang@intel.com>

novaclient/openstack/common/uuidutils.py

@@ -0,0 +1,39 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright (c) 2012 Intel Corporation.
+# 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.
+
+"""
+UUID related utilities and helper functions.
+"""
+
+import uuid
+
+
+def generate_uuid():
+    return str(uuid.uuid4())
+
+
+def is_uuid_like(val):
+    """Returns validation of a value as a UUID.
+
+    For our purposes, a UUID is a canonical form string:
+    aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+
+    """
+    try:
+        return str(uuid.UUID(val)) == val
+    except (TypeError, ValueError, AttributeError):
+        return False

novaclient/utils.py

@@ -346,19 +346,6 @@ def slugify(value):
     return _slugify_hyphenate_re.sub('-', value)
 
 
-def is_uuid_like(val):
-    """
-    The UUID which doesn't contain hyphens or 'A-F' is allowed.
-    """
-    try:
-        if uuid.UUID(val) and val.isalnum() and val.islower():
-            return True
-        else:
-            return False
-    except (TypeError, ValueError, AttributeError):
-        return False
-
-
 def _load_entry_point(ep_name, name=None):
     """Try to load the entry point ep_name that matches name."""
     for ep in pkg_resources.iter_entry_points(ep_name, name=name):

novaclient/v1_1/flavors.py

@@ -7,6 +7,7 @@ import urllib
 from novaclient import base
 from novaclient import exceptions
 from novaclient import utils
+from novaclient.openstack.common import uuidutils
 
 
 class Flavor(base.Resource):
@@ -147,7 +148,7 @@ class FlavorManager(base.ManagerWithFind):
 
         if flavorid == "auto":
             flavorid = None
-        elif not utils.is_uuid_like(flavorid):
+        elif not uuidutils.is_uuid_like(flavorid):
             try:
                 flavorid = int(flavorid)
             except (TypeError, ValueError):

novaclient/v1_1/shell.py

@@ -28,6 +28,7 @@ import time
 from novaclient import exceptions
 from novaclient.openstack.common import strutils
 from novaclient.openstack.common import timeutils
+from novaclient.openstack.common import uuidutils
 from novaclient import utils
 from novaclient.v1_1 import availability_zones
 from novaclient.v1_1 import quotas
@@ -1883,7 +1884,7 @@ def _print_secgroups(secgroups):
 
 def _get_secgroup(cs, secgroup):
     # Check secgroup is an ID
-    if utils.is_uuid_like(strutils.safe_encode(secgroup)):
+    if uuidutils.is_uuid_like(strutils.safe_encode(secgroup)):
         try:
             return cs.security_groups.get(secgroup)
         except exceptions.NotFound:

openstack-common.conf

@@ -1,7 +1,7 @@
 [DEFAULT]
 
 # The list of modules to copy from openstack-common
-modules=timeutils,strutils
+modules=timeutils,strutils,uuidutils
 
 # The base module to hold the copy of openstack.common
 base=novaclient