Fix server strings in reboot operation

The following message is shown currently in the reboot operation.

  Request to reboot server <Server: server1> has been accepted.

The server name string is a bit odd. So fix it as follows.

  Request to reboot server server1
  (ff79e91e-e2a7-4e0f-b4c3-7157676d43c9) has been accepted.

Change-Id: I62df4589dc950f69fdc23eafcbb5792e897cb635
Closes-Bug: #1785495

novaclient/tests/unit/test_utils.py

@@ -23,6 +23,7 @@ from novaclient import exceptions
 from novaclient.tests.unit import fakes
 from novaclient.tests.unit import utils as test_utils
 from novaclient import utils
+from novaclient.v2 import servers
 
 UUID = '8e8ec658-c7b0-4243-bdf8-6f7f2952c0d0'
 
@@ -402,6 +403,30 @@ class DoActionOnManyTestCase(test_utils.TestCase):
     def test_do_action_on_many_last_fails(self):
         self._test_do_action_on_many([None, Exception()], fail=True)
 
+    @mock.patch('sys.stdout', new_callable=six.StringIO)
+    def _test_do_action_on_many_resource_string(
+            self, resource, expected_string, mock_stdout):
+        utils.do_action_on_many(mock.Mock(), [resource], 'success with %s',
+                                'error')
+        self.assertIn('success with %s' % expected_string,
+                      mock_stdout.getvalue())
+
+    def test_do_action_on_many_resource_string_with_str(self):
+        self._test_do_action_on_many_resource_string('resource1', 'resource1')
+
+    def test_do_action_on_many_resource_string_with_human_id(self):
+        resource = servers.Server(None, {'name': 'resource1'})
+        self._test_do_action_on_many_resource_string(resource, 'resource1')
+
+    def test_do_action_on_many_resource_string_with_id(self):
+        resource = servers.Server(None, {'id': UUID})
+        self._test_do_action_on_many_resource_string(resource, UUID)
+
+    def test_do_action_on_many_resource_string_with_id_and_human_id(self):
+        resource = servers.Server(None, {'name': 'resource1', 'id': UUID})
+        self._test_do_action_on_many_resource_string(resource,
+                                                     'resource1 (%s)' % UUID)
+
 
 class RecordTimeTestCase(test_utils.TestCase):
 

novaclient/utils.py

@@ -361,6 +361,18 @@ def safe_issubclass(*args):
     return False
 
 
+def _get_resource_string(resource):
+    if hasattr(resource, 'human_id') and resource.human_id:
+        if hasattr(resource, 'id') and resource.id:
+            return "%s (%s)" % (resource.human_id, resource.id)
+        else:
+            return resource.human_id
+    elif hasattr(resource, 'id') and resource.id:
+        return resource.id
+    else:
+        return resource
+
+
 def do_action_on_many(action, resources, success_msg, error_msg):
     """Helper to run an action on many resources."""
     failure_flag = False
@@ -368,7 +380,7 @@ def do_action_on_many(action, resources, success_msg, error_msg):
     for resource in resources:
         try:
             action(resource)
-            print(success_msg % resource)
+            print(success_msg % _get_resource_string(resource))
         except Exception as e:
             failure_flag = True
             print(encodeutils.safe_encode(six.text_type(e)))