Fix error status code on update-volume API
As the following part of API-WG guidline[1],
If a request contains a reference to a nonexistent resource in the
body (not URI), the code should be 400 Bad Request. Do not use 404
NotFound because :rfc:`7231#section-6.5.4` (section 6.5.4) mentions
the origin server did not find a current representation for the
target resource for 404 and representation for the target resource
means a URI
Nova should return a BadRequest response(400) in this case, because
new_volume_id is specified in a request body. old_volume_id is not
necessary to be changed because the value is specified with URI.
So it is valid to return NotFound response if that is not existent.
[1]: https://github.com/openstack/api-wg/blob/master/guidelines/http.rst#failure-code-clarifications
Close-Bug: #1629110
Change-Id: Ib781b116f5af713d64b5880858cc4f81c3da3977
(cherry picked from commit edd86d9dac
)
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@ -363,12 +363,22 @@ class VolumeAttachmentController(wsgi.Controller):
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old_volume_id = id
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try:
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old_volume = self.volume_api.get(context, old_volume_id)
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new_volume_id = body['volumeAttachment']['volumeId']
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new_volume = self.volume_api.get(context, new_volume_id)
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except exception.VolumeNotFound as e:
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raise exc.HTTPNotFound(explanation=e.format_message())
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new_volume_id = body['volumeAttachment']['volumeId']
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try:
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new_volume = self.volume_api.get(context, new_volume_id)
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except exception.VolumeNotFound as e:
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# NOTE: This BadRequest is different from the above NotFound even
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# though the same VolumeNotFound exception. This is intentional
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# because new_volume_id is specified in a request body and if a
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# nonexistent resource in the body (not URI) the code should be
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# 400 Bad Request as API-WG guideline. On the other hand,
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# old_volume_id is specified with URI. So it is valid to return
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# NotFound response if that is not existent.
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raise exc.HTTPBadRequest(explanation=e.format_message())
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instance = common.get_instance(self.compute_api, context, server_id)
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bdms = objects.BlockDeviceMappingList.get_by_instance_uuid(
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@ -706,9 +706,17 @@ class VolumeAttachTestsV21(test.NoDBTestCase):
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status_int = result.status_int
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self.assertEqual(202, status_int)
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def test_swap_volume_no_attachment(self):
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def test_swap_volume_with_nonexistent_uri(self):
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self.assertRaises(exc.HTTPNotFound, self._test_swap,
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self.attachments, FAKE_UUID_C)
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self.attachments, uuid=FAKE_UUID_C)
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@mock.patch.object(cinder.API, 'get')
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def test_swap_volume_with_nonexistent_dest_in_body(self, mock_update):
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mock_update.side_effect = [
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None, exception.VolumeNotFound(volume_id=FAKE_UUID_C)]
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body = {'volumeAttachment': {'volumeId': FAKE_UUID_C}}
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self.assertRaises(exc.HTTPBadRequest, self._test_swap,
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self.attachments, body=body)
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def test_swap_volume_without_volumeId(self):
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body = {'volumeAttachment': {'device': '/dev/fake'}}
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