Fix volume upload failure with glance_api_version=2

When the volume has additional image properties, upload-to-image
using glance API version 2 will fail with the following error.

  Failed validation u'type' in schema[u'additionalProperties']:
      {u'type': u'string'}

This is due to non core properties passed as a dict to the key
'properties'. It is valid in Image API v1, but the additional
properties must be passed just like core properties in v2.

Change-Id: Ib32c92a8be170b5f43a34e69155398dfc1a8cbcd
Closes-Bug: #1527324

cinder/image/glance.py

@@ -412,6 +412,15 @@ class GlanceImageService(object):
     def _translate_to_glance(image_meta):
         image_meta = _convert_to_string(image_meta)
         image_meta = _remove_read_only(image_meta)
+
+        # NOTE(tsekiyama): From the Image API v2, custom properties must
+        # be stored in image_meta directly, instead of the 'properties' key.
+        if CONF.glance_api_version >= 2:
+            properties = image_meta.get('properties')
+            if properties:
+                image_meta.update(properties)
+                del image_meta['properties']
+
         return image_meta
 
     @staticmethod

cinder/tests/unit/image/test_glance.py

@@ -665,6 +665,52 @@ class TestGlanceImageService(test.TestCase):
 
         self.assertEqual(expected, actual)
 
+    def test_translate_to_glance(self):
+        self.flags(glance_api_version=1)
+        client = glance_stubs.StubGlanceClient()
+        service = self._create_image_service(client)
+
+        metadata = {
+            'id': 1,
+            'size': 2,
+            'min_disk': 2,
+            'min_ram': 2,
+            'properties': {'kernel_id': 'foo',
+                           'ramdisk_id': 'bar',
+                           'x_billinginfo': '123'},
+        }
+
+        actual = service._translate_to_glance(metadata)
+        expected = metadata
+        self.assertEqual(expected, actual)
+
+    def test_translate_to_glance_v2(self):
+        self.flags(glance_api_version=2)
+        client = glance_stubs.StubGlanceClient()
+        service = self._create_image_service(client)
+
+        metadata = {
+            'id': 1,
+            'size': 2,
+            'min_disk': 2,
+            'min_ram': 2,
+            'properties': {'kernel_id': 'foo',
+                           'ramdisk_id': 'bar',
+                           'x_billinginfo': '123'},
+        }
+
+        actual = service._translate_to_glance(metadata)
+        expected = {
+            'id': 1,
+            'size': 2,
+            'min_disk': 2,
+            'min_ram': 2,
+            'kernel_id': 'foo',
+            'ramdisk_id': 'bar',
+            'x_billinginfo': '123',
+        }
+        self.assertEqual(expected, actual)
+
 
 class TestGlanceClientVersion(test.TestCase):
     """Tests the version of the glance client generated."""

releasenotes/notes/glance_v2_upload-939c5693bcc25483.yaml

@@ -0,0 +1,3 @@
+---
+fixes:
+  - upload-to-image using Image API v2 now correctly handles custom image properties.