Return 404 for import-info call

Change the response to GET v2/info/import to be a 404 when Glance is
configured with enable_image_import = False so that the response is
consistent with the v2.5 API.  See the bug for details.

Change-Id: Ib56b600dbf53672bcaa4fd959adb736de4cdff50
Closes-bug: #1711362

glance/api/v2/discovery.py

@@ -14,14 +14,23 @@
 # limitations under the License.
 
 from oslo_config import cfg
+import webob.exc
 
 from glance.common import wsgi
+from glance.i18n import _
+
 
 CONF = cfg.CONF
 
 
 class InfoController(object):
     def get_image_import(self, req):
+        # TODO(jokke): Will be removed after the config option
+        # is removed. (deprecated)
+        if not CONF.enable_image_import:
+            msg = _("Image import is not supported at this site.")
+            raise webob.exc.HTTPNotFound(explanation=msg)
+
         # TODO(jokke): All the rest of the boundaries should be implemented.
         # TODO(jokke): Once we have the rest of the methods implemented
         # the value should be inherited from the CONF rather than hard-
@@ -32,11 +41,6 @@ class InfoController(object):
             'value': ['glance-direct']
         }
 
-        # TODO(jokke): Will be removed after the config option
-        # is removed. (deprecated)
-        if not CONF.enable_image_import:
-            import_methods['value'] = []
-
         return {
             'import-methods': import_methods
         }

glance/tests/unit/v2/test_discovery_image_import.py

@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import webob.exc
+
 import glance.api.v2.discovery
 import glance.tests.unit.utils as unit_test_utils
 import glance.tests.utils as test_utils
@@ -24,8 +26,21 @@ class TestInfoControllers(test_utils.BaseTestCase):
         super(TestInfoControllers, self).setUp()
         self.controller = glance.api.v2.discovery.InfoController()
 
-    def test_get_image_import(self):
+    def test_get_import_info_when_import_not_enabled(self):
+        """When import not enabled, should return 404 just like v2.5"""
+        self.config(enable_image_import=False)
+        req = unit_test_utils.get_fake_request()
+        self.assertRaises(webob.exc.HTTPNotFound,
+                          self.controller.get_image_import,
+                          req)
+
+    def test_get_import_info(self):
+        # TODO(rosmaita): change this when import methods are
+        # listed in the config file
+        import_method = 'glance-direct'
+
+        self.config(enable_image_import=True)
         req = unit_test_utils.get_fake_request()
         output = self.controller.get_image_import(req)
         self.assertIn('import-methods', output)
-        self.assertEqual([], output['import-methods']['value'])
+        self.assertEqual([import_method], output['import-methods']['value'])