Added action that returns nova-compute node name.

Closes-Bug: #1911012
Change-Id: Id9a7c3a675072ed4da3b9cb9fc997e70895205cb

README.md

@@ -301,6 +301,7 @@ deployed then see file `actions.yaml`.
 * `disable`
 * `enable`
 * `hugepagereport`
+* `node-name`
 * `openstack-upgrade`
 * `pause`
 * `register-to-cloud`

actions.yaml

@@ -12,6 +12,8 @@ register-to-cloud:
     README.md, section 'Cloud downscaling'.
 openstack-upgrade:
   description: Perform openstack upgrades. Config option action-managed-upgrade must be set to True.
+node-name:
+  description: Return nova-compute node name. This can be used to identify this unit in the list of nova-compute services.
 pause:
   description: Pause the nova_compute unit.  This action will stop nova_compute services.
 resume:

actions/cloud.py

@@ -136,11 +136,16 @@ def register_to_cloud():
     })
 
 
+def node_name():
+    function_set({'node-name': cloud_utils.service_hostname()})
+
+
 ACTIONS = {
     'disable': disable,
     'enable': enable,
     'remove-from-cloud': remove_from_cloud,
     'register-to-cloud': register_to_cloud,
+    'node-name': node_name,
 }
 
 

actions/node-name

@@ -0,0 +1 @@
+cloud.py

unit_tests/test_actions_cloud.py

@@ -231,3 +231,19 @@ class TestRegisterToCloud(_ActionTestCase):
 
         cloud.service_resume.assert_called_with('nova-compute')
         cloud.function_fail.assert_not_called()
+
+
+class TestNodeName(_ActionTestCase):
+    NAME = 'node-name'
+
+    def setUp(self, to_mock=None):
+        super(TestNodeName, self).setUp()
+
+    def test_get_compute_name(self):
+        """Test action 'node-name'"""
+        hostname = 'compute0.cloud'
+        cloud.cloud_utils.service_hostname.return_value = hostname
+
+        self.call_action()
+
+        cloud.function_set.assert_called_with({'node-name': hostname})