Adding openstack common utils module

Change-Id: Ie8d0c90e5ae37f15b377519a269988dcaf01eea2

cloudpulseclient/openstack/common/apiclient/utils.py

@@ -0,0 +1,100 @@
+#
+#    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.
+
+########################################################################
+#
+# THIS MODULE IS DEPRECATED
+#
+# Please refer to
+# https://etherpad.openstack.org/p/kilo-cloudpulseclient-library-proposals for
+# the discussion leading to this deprecation.
+#
+# We recommend checking out the python-openstacksdk project
+# (https://launchpad.net/python-openstacksdk) instead.
+#
+########################################################################
+
+from oslo_utils import encodeutils
+from oslo_utils import uuidutils
+import six
+
+from cloudpulseclient.openstack.common._i18n import _
+from cloudpulseclient.openstack.common.apiclient import exceptions
+
+
+def find_resource(manager, name_or_id, **find_args):
+    """Look for resource in a given manager.
+
+    Used as a helper for the _find_* methods.
+    Example:
+
+    .. code-block:: python
+
+        def _find_hypervisor(cs, hypervisor):
+            #Get a hypervisor by name or ID.
+            return cliutils.find_resource(cs.hypervisors, hypervisor)
+    """
+    # first try to get entity as integer id
+    try:
+        return manager.get(int(name_or_id))
+    except (TypeError, ValueError, exceptions.NotFound):
+        pass
+
+    # now try to get entity as uuid
+    try:
+        if six.PY2:
+            tmp_id = encodeutils.safe_encode(name_or_id)
+        else:
+            tmp_id = encodeutils.safe_decode(name_or_id)
+
+        if uuidutils.is_uuid_like(tmp_id):
+            return manager.get(tmp_id)
+    except (TypeError, ValueError, exceptions.NotFound):
+        pass
+
+    # for str id which is not uuid
+    if getattr(manager, 'is_alphanum_id_allowed', False):
+        try:
+            return manager.get(name_or_id)
+        except exceptions.NotFound:
+            pass
+
+    try:
+        try:
+            return manager.find(human_id=name_or_id, **find_args)
+        except exceptions.NotFound:
+            pass
+
+        # finally try to find entity by name
+        try:
+            resource = getattr(manager, 'resource_class', None)
+            name_attr = resource.NAME_ATTR if resource else 'name'
+            kwargs = {name_attr: name_or_id}
+            kwargs.update(find_args)
+            return manager.find(**kwargs)
+        except exceptions.NotFound:
+            msg = _("No %(name)s with a name or "
+                    "ID of '%(name_or_id)s' exists.") % \
+                {
+                    "name": manager.resource_class.__name__.lower(),
+                    "name_or_id": name_or_id
+                }
+            raise exceptions.CommandError(msg)
+    except exceptions.NoUniqueMatch:
+        msg = _("Multiple %(name)s matches found for "
+                "'%(name_or_id)s', use an ID to be more specific.") % \
+            {
+                "name": manager.resource_class.__name__.lower(),
+                "name_or_id": name_or_id
+            }
+        raise exceptions.CommandError(msg)

openstack-common.conf

@@ -9,3 +9,4 @@ modules=apiclient/base
 modules=apiclient/client
 modules=apiclient/fake_client
 modules=apiclient/exceptions
+modules=apiclient/utils