Allow searching for hypervisors and getting back details

The 2.53 microversion allows listing hypervisors with
details and filtering on a hypervisor_hostname substring
pattern match.

This makes the python API binding HypervisorManager.search
method allow that as well by adding a new 'detailed' boolean
kwarg which defaults to False for backward compatibility for
the /search and /servers routes before 2.53, but allows
searching and getting detailed results back as well.

Change-Id: I81fa4520af3cc7f1298c262f4fdc4e15fbc6d7ba

novaclient/tests/functional/v2/test_hypervisors.py

@@ -26,3 +26,16 @@ class TestHypervisorsV2_53(TestHypervisorsV28):
 
     def test_list(self):
         self._test_list(cpu_info_type=dict, uuid_as_id=True)
+
+    def test_search_with_details(self):
+        # First find a hypervisor from the list to search on.
+        hypervisors = self.client.hypervisors.list()
+        # Now search for that hypervisor with details.
+        hypervisor = hypervisors[0]
+        hypervisors = self.client.hypervisors.search(
+            hypervisor.hypervisor_hostname, detailed=True)
+        self.assertEqual(1, len(hypervisors))
+        hypervisor = hypervisors[0]
+        # We know we got details if service is in the response.
+        self.assertIsNotNone(hypervisor.service,
+                             'Expected service in hypervisor: %s' % hypervisor)

novaclient/tests/unit/v2/test_hypervisors.py

@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import six
+
 from novaclient import api_versions
 from novaclient import exceptions
 from novaclient.tests.unit.fixture_data import client
@@ -119,6 +121,14 @@ class HypervisorsTest(utils.FixturedTestCase):
                               self.cs.hypervisors.search,
                               hypervisor_match)
 
+    def test_hypervisor_search_detailed(self):
+        # detailed=True is not supported before 2.53
+        ex = self.assertRaises(exceptions.UnsupportedVersion,
+                               self.cs.hypervisors.search, 'hyper',
+                               detailed=True)
+        self.assertIn('Parameter "detailed" requires API version 2.53 or '
+                      'greater.', six.text_type(ex))
+
     def test_hypervisor_servers(self):
         expected = [
             dict(id=self.data_fixture.hyper_id_1,
@@ -236,3 +246,16 @@ class HypervisorsV2_53Test(HypervisorsV233Test):
     def setUp(self):
         super(HypervisorsV2_53Test, self).setUp()
         self.cs.api_version = api_versions.APIVersion("2.53")
+
+    def test_hypervisor_search_detailed(self):
+        expected = [
+            dict(id=self.data_fixture.hyper_id_1,
+                 hypervisor_hostname='hyper1'),
+            dict(id=self.data_fixture.hyper_id_2,
+                 hypervisor_hostname='hyper2')]
+        result = self.cs.hypervisors.search('hyper', detailed=True)
+        self.assert_request_id(result, fakes.FAKE_REQUEST_ID_LIST)
+        self.assert_called(
+            'GET', '/os-hypervisors/detail?hypervisor_hostname_pattern=hyper')
+        for idx, hyper in enumerate(result):
+            self.compare_to_expected(expected[idx], hyper)

novaclient/v2/hypervisors.py

@@ -23,6 +23,8 @@ from six.moves.urllib import parse
 
 from novaclient import api_versions
 from novaclient import base
+from novaclient import exceptions
+from novaclient.i18n import _
 from novaclient import utils
 
 
@@ -76,7 +78,7 @@ class HypervisorManager(base.ManagerWithFind):
         """
         return self._list_base(detailed=detailed, marker=marker, limit=limit)
 
-    def search(self, hypervisor_match, servers=False):
+    def search(self, hypervisor_match, servers=False, detailed=False):
         """
         Get a list of matching hypervisors.
 
@@ -84,6 +86,8 @@ class HypervisorManager(base.ManagerWithFind):
             The hypervisor hosts are selected with the host name matching
             this pattern.
         :param servers: If True, server information is also retrieved.
+        :param detailed: If True, detailed hypervisor information is returned.
+            This requires API version 2.53 or greater.
         """
         # Starting with microversion 2.53, the /servers and /search routes are
         # deprecated and we get the same results using GET /os-hypervisors
@@ -91,11 +95,16 @@ class HypervisorManager(base.ManagerWithFind):
         if six.PY2:
             hypervisor_match = encodeutils.safe_encode(hypervisor_match)
         if self.api_version >= api_versions.APIVersion('2.53'):
-            url = ('/os-hypervisors?hypervisor_hostname_pattern=%s' %
+            url = ('/os-hypervisors%s?hypervisor_hostname_pattern=%s' %
-                   parse.quote(hypervisor_match, safe=''))
+                   ('/detail' if detailed else '',
+                    parse.quote(hypervisor_match, safe='')))
             if servers:
                 url += '&with_servers=True'
         else:
+            if detailed:
+                raise exceptions.UnsupportedVersion(
+                    _('Parameter "detailed" requires API version 2.53 or '
+                      'greater.'))
             target = 'servers' if servers else 'search'
             url = ('/os-hypervisors/%s/%s' %
                    (parse.quote(hypervisor_match, safe=''), target))

releasenotes/notes/search-hypervisor-detailed-352f3ac70d42fe6e.yaml

@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    The ``novaclient.v2.hypervisors.HypervisorManager.search`` method now
+    accepts a ``detailed`` boolean kwarg which defaults to False but when
+    True will search for the given hypervisor hostname match and return
+    details about any matching hypervisors. Specifying ``detailed=True``
+    requires compute API version 2.53 or greater.