Cap image API deprecated methods at 2.35

The image proxy API GET/DELETE methods are deprecated
at microversion 2.36 and will return a 404 after that.

This adds the wraps decorator to those python API methods
so set the cap at 2.35 so rather than get a 404 you'll
get a more uesful VersionNotFoundForAPIMethod.

Note that set_meta and delete_meta are not decorated
because we missed deprecating the image-metadata proxy API
with the 2.36 microversion. That will be fixed in Ocata.

Related to blueprint deprecate-api-proxies

Change-Id: Ie65efadb5c65e8a624ffd0315a634accd49f1c30

novaclient/api_versions.py

@@ -374,6 +374,9 @@ def get_substitutions(func_name, api_version=None):
     return sorted(substitutions, key=lambda m: m.start_version)
 
 
+# FIXME(mriedem): This breaks any ManagerWithFind.list method that has a
+# 'detailed' kwarg since the ManagerWithFind.findall won't find the correct
+# argspec from the wrapped list method.
 def wraps(start_version, end_version=None):
     start_version = APIVersion(start_version)
     if end_version:

novaclient/tests/unit/v2/test_images.py

@@ -15,6 +15,8 @@ import warnings
 
 import mock
 
+from novaclient import api_versions
+from novaclient import exceptions
 from novaclient.tests.unit.fixture_data import client
 from novaclient.tests.unit.fixture_data import images as data
 from novaclient.tests.unit import utils
@@ -96,3 +98,10 @@ class ImagesTest(utils.FixturedTestCase):
         self.assert_request_id(iml, fakes.FAKE_REQUEST_ID_LIST)
         self.assertEqual(1, len(iml))
         self.assertEqual('My Server Backup', iml[0].name)
+
+    def test_find_2_36(self):
+        """Tests that using the find method fails after microversion 2.35.
+        """
+        self.cs.api_version = api_versions.APIVersion('2.36')
+        self.assertRaises(exceptions.VersionNotFoundForAPIMethod,
+                          self.cs.images.find, name="CentOS 5.2")

novaclient/v2/images.py

@@ -21,6 +21,7 @@ import warnings
 from oslo_utils import uuidutils
 from six.moves.urllib import parse
 
+from novaclient import api_versions
 from novaclient import base
 from novaclient import exceptions
 from novaclient.i18n import _
@@ -91,6 +92,7 @@ class ImageManager(base.ManagerWithFind):
     """
     resource_class = Image
 
+    @api_versions.wraps('2.0', '2.35')
     def get(self, image):
         """
         DEPRECATED: Get an image.
@@ -113,6 +115,14 @@ class ImageManager(base.ManagerWithFind):
         :param marker: Begin returning images that appear later in the image
                        list than that represented by this image id (optional).
         """
+        # FIXME(mriedem): Should use the api_versions.wraps decorator but that
+        # breaks the ManagerWithFind.findall method which checks the argspec
+        # on this function looking for the 'detailed' arg, and it's getting
+        # tripped up if you use the wraps decorator. This is all deprecated for
+        # removal anyway so we probably don't care too much about this.
+        if self.api.api_version > api_versions.APIVersion('2.35'):
+            raise exceptions.VersionNotFoundForAPIMethod(
+                self.api.api_version, 'list')
         warnings.warn(
             'The novaclient.v2.images module is deprecated and will be '
             'removed after Nova 15.0.0 is released. Use python-glanceclient '
@@ -129,6 +139,7 @@ class ImageManager(base.ManagerWithFind):
         query = '?%s' % parse.urlencode(params) if params else ''
         return self._list('/images%s%s' % (detail, query), 'images')
 
+    @api_versions.wraps('2.0', '2.35')
     def delete(self, image):
         """
         DEPRECATED: Delete an image.