Add image v2 tags

Tags created and deleted through this endpoint only, browse available through
image retrieve.

Change-Id: I9d801337c3775e8dc802eecf5d6bca07df55ac1f

openstack/image/v2/tag.py

@@ -0,0 +1,35 @@
+# 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.
+
+from openstack.image import image_service
+from openstack import resource
+
+
+class Tag(resource.Resource):
+    id_attribute = 'tag'
+    resources_key = 'tags'
+    base_path = '/images/%(image_id)s/tags'
+    service = image_service.ImageService()
+
+    # capabilities
+    allow_create = True
+    allow_delete = True
+
+    # Properties
+    image_id = resource.prop('image_id')
+
+    def create(self, session):
+        """Create a remote resource from this instance."""
+        # Service expects a naked PUT. Omit properties.
+        self.create_by_id(session, None, self.id, path_args=self)
+        self._reset_dirty()
+        return self

openstack/tests/image/v2/test_tag.py

@@ -0,0 +1,50 @@
+# 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.
+
+import mock
+import testtools
+
+from openstack.image.v2 import tag
+
+IDENTIFIER = 'IDENTIFIER'
+EXAMPLE = {
+    'image_id': 'IMAGE_ID',
+    'tag': IDENTIFIER,
+}
+
+
+class TestTag(testtools.TestCase):
+    def test_basic(self):
+        sot = tag.Tag()
+        self.assertIsNone(sot.resource_key)
+        self.assertEqual('tags', sot.resources_key)
+        self.assertEqual('/images/%(image_id)s/tags', sot.base_path)
+        self.assertEqual('image', sot.service.service_type)
+        self.assertEqual('tag', sot.id_attribute)
+        self.assertTrue(sot.allow_create)
+        self.assertFalse(sot.allow_retrieve)
+        self.assertFalse(sot.allow_update)
+        self.assertTrue(sot.allow_delete)
+        self.assertFalse(sot.allow_list)
+
+    def test_make_it(self):
+        sot = tag.Tag(EXAMPLE)
+        self.assertEqual(IDENTIFIER, sot.id)
+        self.assertEqual(EXAMPLE['image_id'], sot.image_id)
+
+    def test_create(self):
+        sess = mock.Mock()
+        resp = mock.Mock()
+        sess.put = mock.Mock(return_value=resp)
+        url = 'images/{image_id}/tags/{tag}'.format(**EXAMPLE)
+        tag.Tag(EXAMPLE).create(sess)
+        sess.put.assert_called_with(url, service=tag.Tag.service, json=None)