Add update attached volume function to servers_client

os-volume_attachments API for update:
PUT /v2.1/{tenant_id}/servers/{server_id}/os-volume_attachments/{attachment_id}

tenant_id: The project ID (tenant ID) that the target server belongs to
server_id: The server ID to update the volume attachment
attachment_id: The volume attachment ID to update

Request body sample:
{
    "volumeAttachment": {
        "volumeId": "a26887c6-c47b-4654-abb5-dfadf7d3f805"
    }
}

volumeId: The volume ID to attach instead of the volume
          that has already been attached

This API does not return a response body.

Reference:
- Request body sample
  https://github.com/openstack/nova/blob/master/doc/api_samples/os-volumes/update-volume-req.json

- Fuctional test
  test_volume_attachment_update method in
  VolumeAttachmentsSample class
  https://github.com/openstack/nova/blob/master/nova/tests/functional/api_sample_tests/test_volumes.py

Change-Id: Ic0258e5688be6ede3316ab4310e9ca6ac0f51659
Implements: blueprint add-nova-swap-volume-tests

1 files changed, 9 insertions, 0 deletions

diff --git a/tempest_lib/services/compute/servers_client.py b/tempest_lib/services/compute/servers_client.py
index 5bbcf24..cdb992b 100644
--- a/tempest_lib/services/compute/servers_client.py
+++ b/tempest_lib/services/compute/servers_client.py
@@ -312,6 +312,15 @@ class ServersClient(rest_client.RestClient):
         self.validate_response(schema.attach_volume, resp, body)
         return rest_client.ResponseBody(resp, body)
 
+    def update_attached_volume(self, server_id, attachment_id, **kwargs):
+        """Swaps a volume attached to an instance for another volume"""
+        post_body = json.dumps({'volumeAttachment': kwargs})
+        resp, body = self.put('servers/%s/os-volume_attachments/%s' %
+                              (server_id, attachment_id),
+                              post_body)
+        self.validate_response(schema.update_attached_volume, resp, body)
+        return rest_client.ResponseBody(resp, body)
+
     def detach_volume(self, server_id, volume_id):  # noqa
         """Detaches a volume from a server instance."""
         resp, body = self.delete('servers/%s/os-volume_attachments/%s' %