ksa auth conf and client for Cyborg access

Framework for communication with the Cyborg API.

- Standard keystoneauth1 config options for setting up authentication in
the [cyborg] section of nova*.conf.
- A new nova.accelerator.cyborg module containing a get_client method to
return a client containing a keystoneauth1 adapter pointing
to the Cyborg service with user- and service- based authentication.
- Requirements updates to pull in the os-service-types release
containing the 'accelerator' service type.

Change-Id: Iee0766269d61948ad701911e8b0e5e24d3d6eb04
Blueprint: nova-cyborg-interaction

2 files changed, 32 insertions, 0 deletions

diff --git a/nova/accelerator/__init__.py b/nova/accelerator/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/nova/accelerator/__init__.py
diff --git a/nova/accelerator/cyborg.py b/nova/accelerator/cyborg.py
new file mode 100644
index 0000000000..dca3688665
--- /dev/null
+++ b/nova/accelerator/cyborg.py
@@ -0,0 +1,32 @@
+# Copyright 2019 Intel
+#
+#    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 oslo_log import log as logging
+
+from nova import service_auth
+from nova import utils
+
+
+LOG = logging.getLogger(__name__)
+
+
+def get_client(context):
+    return _CyborgClient(context)
+
+
+class _CyborgClient(object):
+
+    def __init__(self, context):
+        auth = service_auth.get_auth_plugin(context)
+        self._client = utils.get_ksa_adapter('accelerator', ksa_auth=auth)